US20050197481A1 - Barrier coating comprising a polyurethane dispersion - Google Patents
Barrier coating comprising a polyurethane dispersion Download PDFInfo
- Publication number
- US20050197481A1 US20050197481A1 US11/072,834 US7283405A US2005197481A1 US 20050197481 A1 US20050197481 A1 US 20050197481A1 US 7283405 A US7283405 A US 7283405A US 2005197481 A1 US2005197481 A1 US 2005197481A1
- Authority
- US
- United States
- Prior art keywords
- coating
- mil
- polyurethane
- barrier
- microlite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 75
- 239000011248 coating agent Substances 0.000 title claims abstract description 61
- 230000004888 barrier function Effects 0.000 title claims abstract description 57
- 229920003009 polyurethane dispersion Polymers 0.000 title claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 27
- 239000004814 polyurethane Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 125000003118 aryl group Chemical class 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 43
- 239000000758 substrate Substances 0.000 claims description 33
- 229920000728 polyester Polymers 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000008199 coating composition Substances 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 15
- 239000003086 colorant Substances 0.000 claims description 14
- 229920005906 polyester polyol Polymers 0.000 claims description 10
- 239000004971 Cross linker Substances 0.000 claims description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 4
- AZYRZNIYJDKRHO-UHFFFAOYSA-N 1,3-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC(C(C)(C)N=C=O)=C1 AZYRZNIYJDKRHO-UHFFFAOYSA-N 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims 2
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims 1
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 34
- 239000006185 dispersion Substances 0.000 description 25
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 22
- -1 ether polyols Chemical class 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- 239000002253 acid Substances 0.000 description 15
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 239000002105 nanoparticle Substances 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 description 11
- 239000000523 sample Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
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- 239000012948 isocyanate Substances 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
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- 229920001730 Moisture cure polyurethane Polymers 0.000 description 9
- 150000002513 isocyanates Chemical class 0.000 description 9
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 8
- 229960002887 deanol Drugs 0.000 description 8
- 239000012972 dimethylethanolamine Substances 0.000 description 8
- 239000010445 mica Substances 0.000 description 7
- 229910052618 mica group Inorganic materials 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
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- HBAIZGPCSAAFSU-UHFFFAOYSA-N 1-(2-hydroxyethyl)imidazolidin-2-one Chemical compound OCCN1CCNC1=O HBAIZGPCSAAFSU-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
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- 150000002009 diols Chemical class 0.000 description 5
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- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
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- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- 238000013019 agitation Methods 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
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- 239000011541 reaction mixture Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
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- 150000008064 anhydrides Chemical class 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
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- 239000000975 dye Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 3
- 239000010455 vermiculite Substances 0.000 description 3
- 229910052902 vermiculite Inorganic materials 0.000 description 3
- 235000019354 vermiculite Nutrition 0.000 description 3
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 2
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 2
- AGJCSCSSMFRMFQ-UHFFFAOYSA-N 1,4-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=C(C(C)(C)N=C=O)C=C1 AGJCSCSSMFRMFQ-UHFFFAOYSA-N 0.000 description 2
- WTFAGPBUAGFMQX-UHFFFAOYSA-N 1-[2-[2-(2-aminopropoxy)propoxy]propoxy]propan-2-amine Chemical compound CC(N)COCC(C)OCC(C)OCC(C)N WTFAGPBUAGFMQX-UHFFFAOYSA-N 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 206010073306 Exposure to radiation Diseases 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 239000005041 Mylar™ Substances 0.000 description 2
- QVHMSMOUDQXMRS-UHFFFAOYSA-N PPG n4 Chemical compound CC(O)COC(C)COC(C)COC(C)CO QVHMSMOUDQXMRS-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 2
- BWVAOONFBYYRHY-UHFFFAOYSA-N [4-(hydroxymethyl)phenyl]methanol Chemical compound OCC1=CC=C(CO)C=C1 BWVAOONFBYYRHY-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
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- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
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- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- QSAWQNUELGIYBC-UHFFFAOYSA-N cyclohexane-1,2-dicarboxylic acid Chemical compound OC(=O)C1CCCCC1C(O)=O QSAWQNUELGIYBC-UHFFFAOYSA-N 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- NGDPCAMPVQYGCW-UHFFFAOYSA-N dibenzothiophene 5-oxide Chemical compound C1=CC=C2S(=O)C3=CC=CC=C3C2=C1 NGDPCAMPVQYGCW-UHFFFAOYSA-N 0.000 description 1
- JGFBRKRYDCGYKD-UHFFFAOYSA-N dibutyl(oxo)tin Chemical compound CCCC[Sn](=O)CCCC JGFBRKRYDCGYKD-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- QCHWBGRKGNYJSM-UHFFFAOYSA-N ethene Chemical group C=C.C=C.C=C QCHWBGRKGNYJSM-UHFFFAOYSA-N 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 239000011874 heated mixture Substances 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229940018564 m-phenylenediamine Drugs 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 229920006295 polythiol Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000004758 synthetic textile Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- WYURNTSHIVDZCO-UHFFFAOYSA-N tetrahydrofuran Substances C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3215—Polyhydroxy compounds containing aromatic groups or benzoquinone groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
- C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
- C08G18/4222—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups derived from aromatic polyhydroxy compounds and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- Y10T428/31573—Next to addition polymer of ethylenically unsaturated monomer
- Y10T428/31583—Nitrile monomer type [polyacrylonitrile, etc.]
Definitions
- Additional color effect compositions can include transparent coated mica and/or synthetic mica, coated silica, coated alumina, a transparent liquid crystal pigment, a liquid crystal coating, and/or any composition wherein interference results from a refractive index differential within the material and not because of the refractive index differential between the surface of the material and the air.
- Composite polyester/nylon pigments for example, can be incorporated into the present coatings and provide, for example, a good appearance without affecting flexibility; such pigments can also contribute to barrier.
- Suitable polyester/nylon pigments are commercially available from Teijin Fiber Limited, Osaka, Japan.
- the coating on the substrate will typically have a dry film thickness of 0.1 to 20 mils, such as 0.5 to 10 or 1 to 2.
- Polyurethane prepolymers were prepared in a similar manner.
- the diols were combined (including HER and DMPA) and heated until dissolved. This mixture was then added to isocyanate in an appropriate solvent and held until a specific NCO equivalent weight was reached.
- a polyurethane prepolymer in the form of an isocyanate-functional polymer was prepared in the following manner. Polyester diol Sample No.
- the isocyanate-functional prepolymer of Example 2 was chain extended and dispersed in water in the following manner. To a round-bottomed glass flask equipped with a mechanical stirrer, nitrogen inlet, condenser and thermometer was added deionized water, 1533 g, MXDA (m-xylylenediamine), 23.0 g, and DMEA (dimethylethanol amine), 33.4 g. The contents of the flask were heating with stirring to 50° C. The polyurethane prepolymer of Example 2 was then dropped into the aqueous mixture over about 15 minutes followed by an MEK rinse, 60 g, resulting in a milky-white dispersion.
- MXDA m-xylylenediamine
- DMEA dimethylethanol amine
- Table 3 lists additional polyurethane dispersions prepared without polyester. These polyurethane prepolymers and dispersions were prepared in substantially the same way as described in Examples 2 and 3. TABLE 3 Polyurethane Dispersions (Non-Polyester) Dispersion JEFFAMINE m- DI Code No.
- the gas barrier coatings possess excellent oxygen barrier properties.
- a polyester prepolymer was prepared in a four-neck round bottom flask equipped with an electronic temperature probe, mechanical stirrer, condenser, dry nitrogen sparge, and a heating mantle.
- the following ingredients were used: diethylene glycol 3500.0 g succinic anhydride 4176.0 g dibutyltin oxide 15.0 g
- a polyurethane dispersion with TDI and no HER was prepared in a four-neck round bottom flask equipped with an electronic temperature probe, mechanical stirrer, condenser, nitrogen atmosphere, and a heating mantle.
- the following ingredients were used: Charge A toluene diisocyanate (TDI) 193.0 g methyl ethyl ketone 377.0 g Charge B N-methyl pyrrolidinone 22.0 g dimethylolpropionic acid (DMPA) 64.0 g polyester pre-polymer of Example 7 782.0 g Charge C methyl ethyl ketone 40.0 g Charge D water 1714.0 g dimethylethanolamine 26.2 g hydroxyethyl ethyleneurea (HEEU) 54.9 g meta-xylene diamine (MXDA) 10.0 g Charge E methyl ethyl ketone 59.4 g
- Charge A was stirred in the flask at a temperature of 70° C.
- Charge B was heated in a separate flask to a temperature of 90° C. and added to charge A over a thirty minute period at a temperature of 80° C.
- Charge C was used to rinse the Charge B flask and then added to the reaction mixture. The reaction mixture was held at 80° C. for an additional five hours.
- Charge D was heated to 50° C. in a separate 12 liter four-neck round-bottom flask under a nitrogen atmosphere. 1188.0 g of the reaction product of Charges A, B, and C was added to Charge D over a ten-minute period followed by the addition of Charge E. The methyl ethyl ketone was removed by vacuum distillation at 50° C.
Abstract
A barrier coating comprising a polyurethane dispersion is disclosed. The polyurethane comprises at least 30 weight percent of meta-substituted aromatic material. Methods for improving barrier using the coatings are also disclosed.
Description
- This application claims priority to provisional application No. 60/550,491, filed Mar. 5, 2004.
- The present invention relates to barrier coatings comprising a polyurethane dispersion.
- For many substrates used in a variety of industries, barrier protection, such as protection against vapor, gas and/or chemical ingress and/or egress, is often desired. For example, thermoplastic and thermoset polymeric materials are widely used substrates through which gases, such as oxygen and carbon dioxide, can be readily permeated. This is particularly true of most of the plastic materials commonly used by the packaging industry. Some oxygen-sensitive products may become discolored and/or spoiled upon even minute exposure to oxygen, and carbonated beverages can lose their carbonation or become “flat” if carbon dioxide is removed. Bladders, such as those used in sporting equipment including shoes and balls, are similarly permeable to gas. The materials used in tires are also permeable to gas, and resistance to gas and moisture permeation is typically desired. Often, coatings used for increasing the barrier of these substrates can have a negative effect on the flexibility and/or elasticity of the substrate. Improved barrier coatings, particularly those in which flexibility and/or elasticity are not significantly sacrificed, are therefore desired.
- The present invention is directed to a barrier coating comprising a polyurethane comprising at least 30 weight percent of meta-substituted aromatic material. The present invention is further directed to methods for using the barrier coatings described herein.
- The present invention is directed to a barrier coating comprising a polyurethane comprising at least 30 weight percent of meta-substituted aromatic material. The weight percent is based on the total solid weight of the resin. “Polyurethane” as used herein refers to compounds having urethane and/or urea linkages.
- As used herein, “barrier coating” refers to a coating that imparts vapor barrier, gas barrier and/or chemical barrier to a substrate. “Vapor barrier” refers to a barrier and/or low permeability to liquid and/or its vapor. “Gas barrier” refers to a barrier or low permeability to oxygen, nitrogen, carbon dioxide and/or other gases. “Chemical barrier” refers to a barrier or low permeability to the migration of a molecule from one substrate to another, and/or from within one substrate to its surface. Any resistance to permeation of vapor, gas and/or chemical(s) is sufficient to qualify the coating as a “barrier coating” according to the present invention. The gas barrier properties of a substrate, and/or any coatings thereon, are typically described in terms of the oxygen permeability constant (“P(O2)”). The “P(O2)” number quantifies the amount of oxygen that can pass through a substrate and/or coating under a specific set of circumstances and is generally expressed in units of cm3-mil/100 inches2/atmosphere/day. This is a standard unit of permeation measured as cubic centimeters of oxygen permeating through one mil (25.4 micron) thickness of a sample, 100 square inches (654 square centimeters) in an area, over a 24-hour period, under a partial pressure differential of one atmosphere at a specific temperature and relative humidity (R.H.) conditions.
- As noted above, at least 30 weight percent of the polyurethane used in the present barrier coating is meta-substituted aromatic material. The meta-substituted aromatic material can be introduced through components of the polyurethane pre-polymer, or through chain extenders reacted with the polyurethane. Components that contribute barrier may have a negative effect on flexibility and/or elasticity of a substrate; the needs of the user will help to determine the desired level of barrier, flexibility and/or elasticity. The percent of meta-substituted aromatic material can be determined, for example, by adding the weight of all the monomers containing meta-substituted aromatic material, dividing that number by the total solid weight of the final resin and multiplying by 100.
- In one embodiment of the present invention, the polyurethane comprises a polyester polyol. In another embodiment of the present invention, the polyester polyol has a Molar Permachor Number of at least 35, such as 39 or higher. “Molar Permachor Number” and like terms refer to the number calculated from the chemical structure of the polymer; each atom or group of atoms in side chains or the backbone has a value from the Master Table of Segmental Permachor Values, which Table can be found, for example, in “Properties of Polymers” by D. W. Van Krevelan, 3rd Ed., Elsevier, (1990). The values are then used to get the Permachor Number, according to methods known to those skilled in the art, which are also discussed in “The Use of Barrier Polymers in Packaging” by Morris Salame, Polysultants Co.
- In certain nonlimiting embodiments of the invention, the polyester polyol Molar Permachor Number of at least 35 is achieved by preparing a polyester polyol from a polyol comprising an ether moiety and a carboxylic acid or anhydride. Suitable ether polyols include, for example, diethylene glycol, ethylene glycol and lower oligomers of ethylene glycol including diethylene glycol, triethylene glycol and tetraethylene glycol; propylene glycol and lower oligomers of propylene glycol including dipropylene glycol, tripropylene glycol and tetrapropylene glycol; also poly(tetrahydrofuran). Suitable dicarboxylic acids include but are not limited to glutaric acid, succinic acid, malonic acid, oxalic acid, phthalic acid, isophthalic acid, hexahydrophthalic acid, adipic acid, maleic acid, and mixtures thereof. Anhydrides of these and any other carboxylic acids can also be used. In certain nonlimiting embodiments, the polyester polyol has greater than eight carbon atoms.
- The polyester polyol can be prepared according to any method known in the art. For example, the polyol and carboxylic acid/anhydride can be heated together while removing the water generated by esterification until a desired acid number is achieved.
- The polyester polyol can then be reacted with isocyanate to form a polyurethane. The polyurethane can be formed according to any method known in the art, such as by heating the polyol with an isocyanate until a desired NCO equivalent weight is achieved. Any isocyanate can be used according to the present invention; examples include, but are not limited to, isophorone diisocyanate (IPDI), dicyclohexylmethane 4,4′-diisocyanate (H12MDI), cyclohexyl diisocyanate (CHDI), m-tetramethylxylylene diisocyanate (m-TMXDI), p-tetramethylxylylene diisocyanate (p-TMXDI), ethylene diisocyanate, 1,2-diisocyanatopropane, 1,3-diisocyanatopropane, 1,6-diisocyanatohexane (hexamethylene diisocyanate or HDI), 1,4-butylene diisocyanate, lysine diisocyanate, 1,4-methylene bis-(cyclohexyl isocyanate), toluene diisocyanate (TDI), m-xylylenediisocyanate (MXDI) and p-xylylenediisocyanate, 4-chloro-1,3-phenylene diisocyanate, 1,5-tetrahydro-naphthalene diisocyanate, 4,4′-dibenzyl diisocyanate, and 1,2,4-benzene triisocyanate, xylylene diisocyanate (XDI), and combinations thereof.
- The polyurethane can then be chain extended to build molecular weight using, for example, any chain extension agent having more than one reactive functional group. Examples include polyols, polyamines, polythiols, or other compounds having reactive functional groups, such as hydroxy groups, thiol groups, amine groups, carboxylic acids, and acetylacetonate protons. Suitable polyol chain extenders include, but are not limited to: 1,6-hexanediol; cyclohexanedimethanol; 2-ethyl-1,6-hexanediol; 1,4-butanediol; ethylene glycol and lower oligomers of ethylene glycol including diethylene glycol, triethylene glycol and tetraethylene glycol; propylene glycol and lower oligomers of propylene glycol including dipropylene glycol, tripropylene glycol and tetrapropylene glycol; 1,3-propanediol; 1,4-butanediol; neopentyl glycol; dihydroxyalkylated aromatic compounds such as the bis (2-hydroxyethyl) ethers of hydroquinone and resorcinol (HER); p-xylene-a, a′-diol; the bis (2-hydroxyethyl) ether of p-xylene-a, a′-diol; m-xylene-a, a′-diol and the bis (2-hydroxyethyl) ether, trimethylol propane, 1,2,6-hexantriol, glycerol, and mixtures thereof. Suitable polyamine extenders include, but are not limited to, p-phenylenediamine, m-phenylenediamine, benzidine, 4,4′-methylenedianiline, 4,4′-methylenibis (2-chloroaniline), ethylene diamine, m-xylylenediamine (MXDA) and combinations of these. Other typical chain extenders are amino alcohols such as ethanolamine, propanolamine, and butanolamine. Acidic chain extenders include 2,2-bis(hydroxymethyl)propionic acid (DMPA), 2,2-bis(hydroxymethyl)butyric acid, and diphenolic acid. Other suitable chain extenders and combinations of chain extenders are also within the scope of the present invention.
- Isocyanates can also be used, such as any of those listed above, to further chain extend the molecule and/or impart desired properties.
- Chain extension can be accomplished by means standard in the art. For example, the chain extenders can be heated in a flask and the polyurethane added thereto. In certain nonlimiting embodiments, it may be desired to neutralize a chain extended polyurethane having acidic functionality to increase stability of the polyurethane when it is dispersed in water. Any amine or other neutralizing agent can be used; certain chain extenders may also provide neutralization. Examples include but are not limited to MXDA and dimethylethanol amine (DMEA); the neutralizing agent can also contribute to the barrier properties of the coating. In certain nonlimiting embodiments, the polyurethane is in solvent, and neutralization of any acid in the polyurethane molecule is not desired.
- As noted above, the polyurethanes used in the coatings of the present invention comprise at least 30 weight percent of meta-substituted aromatic material. Weight percent is based on the total solid weight of the resin (i.e. polyurethane) itself. The meta-substituted aromatic material can be introduced in the polyester polyol, the isocyanate reacted with the polyester polyol to form the urethane, and/or any of the various chain extenders.
- The polyurethane prepolymer of the present invention will typically have a weight average molecular weight in THF of 5000 to 30,000, such as 7000 to 25,000 or 10,000 to 15,000. The polyurethane when dispersed in water (i.e. the “polyurethane dispersion”) will typically have a weight average molecular weight (in DMF) of 8000 to 200,000, such as 10,000 to 130,000 or 20,000 to 60,000. In certain nonlimiting embodiments, the polyurethane will have a Molar Permachor Number of at least 50.
- In certain nonlimiting embodiments, it may be desired to use a meta-substituted aliphatic isocyanate, such as TMXDI, to form the polyurethane.
- In certain nonlimiting embodiments, the polyurethane dispersion is comprised of a blend of two or more different polyurethanes. In these embodiments, there will be at least 30 weight percent of meta-substituted aromatic material based on the overall weight of polyurethane in the blend, but each polyurethane added to the blend may or may not have at least 30 weight percent of meta-substituted aromatic material. For example, a first polyurethane dispersion having approximately 35 weight percent TDI and approximately 20 weight percent HER can be blended with a second polyurethane dispersion comprising approximately 20 weight percent TDI and zero percent HER.
- In certain nonlimiting embodiments, the barrier coating of the present invention further comprises one or more additional polymers. The polymer(s) can be chosen to impart various properties and/or effects to the coating. For example, a polymer known to impart barrier can be used, such as polyvinylidene chloride (PVDC), copolymers of vinylidene chloride, EVOH, polyamides, and the like. Other polymers that function as adhesion promoters, flexibilizers, plasticizers and the like can also be used.
- In certain nonlimiting embodiments, the present barrier coatings further comprise a pigment or other colorant. As used herein, the term “colorant” means any substance that imparts color and/or other opacity and/or other visual effect to the composition. The colorant can be added to the coating in any suitable form, such as discrete particles, dispersions, solutions and/or flakes. A single colorant or a mixture of two or more colorants can be used in the coating of the present invention.
- Example colorants include pigments, dyes and tints, such as those used in the paint industry and/or listed in the Dry Color Manufacturers Association (DCMA) as well as special effect compositions. A colorant may include, for example, a finely divided solid powder that is insoluble but wettable under the conditions of use. A colorant can be organic or inorganic and can be agglomerated or non-agglomerated.
- As noted above the colorant can be in the form of a dispersion including, but not limited to, a nanoparticle dispersion. Nanoparticle dispersions can include one or more highly dispersed nanoparticle colorants or colorant particles that produce a desired visible color and/or opacity and/or visual effect. Nanoparticle dispersions can include colorants such as pigments or dyes having a particle size of less than about 150 nm, such as less than 70 nm, or less than 30 nm. Example nanoparticle dispersions and methods for making them are identified in U.S. Application Publication No. 2003/0125417, which is incorporated herein by reference. Nanoparticle dispersions can also be produced by crystallization, precipitation, gas phase condensation, and chemical attrition (i.e., partial dissolution). In order to minimize re-agglomeration of nanoparticles within the coating, a dispersion of resin-coated nanoparticles can be used. As used herein, a “dispersion of resin-coated nanoparticles” refers to a continuous phase in which is dispersed discreet “composite microparticles” that comprise a nanoparticle and a resin coating on the nanoparticle. Example dispersions of resin-coated nanoparticles and methods for making them are identified in U.S. application Ser. No. 10/876,315 filed Jun. 24, 2004, which is incorporated herein by reference, and U.S. Provisional Application No. 60/482,167 filed Jun. 24, 2003, which is also incorporated herein by reference.
- Example special effect compositions that may be used in the coating of the present invention include pigments and/or compositions that produce one or more appearance effects such as reflectance, pearlescence, metallic sheen, phosphorescence, fluorescence, photochromism, photosensitivity, thermochromism, goniochromism and/or color-change. Additional special effect compositions can provide other perceptible properties, such as opacity or texture. In a non-limiting embodiment, special effect compositions can produce a color shift, such that the color of the coating changes when the coating is viewed at different angles. Example color effect compositions are identified in U.S. Patent Application Publication No. 2003/0125416, incorporated herein by reference. Additional color effect compositions can include transparent coated mica and/or synthetic mica, coated silica, coated alumina, a transparent liquid crystal pigment, a liquid crystal coating, and/or any composition wherein interference results from a refractive index differential within the material and not because of the refractive index differential between the surface of the material and the air.
- In certain non-limiting embodiments, a photosensitive composition and/or photochromic composition, which reversibly alters its color when exposed to one or more light sources, can be used in the coating of the present invention. Photochromic and/or photosensitive compositions can be activated by exposure to radiation of a specified wavelength. When the composition becomes excited, the molecular structure is changed and the altered structure exhibits a new color that is different from the original color of the composition. When the exposure to radiation is removed, the photochromic and/or photosensitive composition can return to a state of rest, in which the original color of the composition returns. In one non-limiting embodiment, the photochromic and/or photosensitive composition can be colorless in a non-excited state and exhibit a color in an excited state. Full color-change can appear within milliseconds to several minutes, such as from 20 seconds to 60 seconds. Example photochromic and/or photosensitive compositions include photochromic dyes.
- In a non-limiting embodiment, the photosensitive composition and/or photochromic composition can be associated with and/or at least partially bound to, such as by covalent bonding, a polymer and/or polymeric materials of a polymerizable component. In contrast to some coatings in which the photosensitive composition may migrate out of the coating and crystallize into the substrate, the photosensitive composition and/or photochromic composition associated with and/or at least partially bound to a polymer and/or polymerizable component in accordance with a non-limiting embodiment of the present invention, have minimal migration out of the coating. Example photosensitive compositions and/or photochromic compositions and methods for making them are identified in U.S. application Ser. No. 10/892,919 filed Jul. 16, 2004 and incorporated herein by reference. Composite polyester/nylon pigments, for example, can be incorporated into the present coatings and provide, for example, a good appearance without affecting flexibility; such pigments can also contribute to barrier. Suitable polyester/nylon pigments are commercially available from Teijin Fiber Limited, Osaka, Japan.
- In certain nonlimiting embodiments, the pigment can be one having a high aspect ratio. Suitable high aspect ratio pigments include, for example, vermiculite, mica, talc, metal flakes, platy clays and platy silicas. High aspect ratio platelets or pigments may be present in coatings in amounts from above 0.1 to 20 weight percent of the barrier coating, such as from 1 to 10 weight percent, with weight percent based on the total solid weight of the coating. The high aspect ratio pigments may form a “fish-scale” arrangement within the coating, which provides a tortuous path for gases to pass through from one side of the coating to the other. Such platelets typically have diameters of from about 1 to about 20 microns, such as about 2 to 5 or 10 microns. The aspect ratio of the platelets is typically at least 5:1, such as at least 10:1 or 20:1. As particular examples, mica flakes may have an aspect ratio of about 20:1, talc may have an aspect ratio of about 10:1 to about 20:1 and vermiculite may have an aspect ratio of from about 200:1 to about 10,000:1. While high aspect ratio pigments contribute to barrier properties, if used in quantities that are too great, flexibility and/or elasticity may be sacrificed. Accordingly, the user will need to determine the appropriate amount of high aspect ratio pigment to use to get the desired properties of barrier and flexibility/elasticity. In certain nonlimiting embodiments, a high aspect pigment can be ground and added directly to the polyurethane.
- The barrier coating composition of the present invention may optionally include other ingredients such as fillers, other than the pigments described above, extenders, UV absorbers, light stabilizers, plasticizers, surfactants and wetting agents. These optional ingredients, if used, may comprise up to 10 weight percent, with weight percent being based on the total solid weight of the barrier coating composition.
- In certain nonlimiting embodiments, the present barrier coating compositions and/or polyurethane dispersions may be water-based, such as in the form of an aqueous dispersion. The term “water-based” as used herein refers to a composition in which the carrier fluid of the composition is predominantly water on a weight percent basis, i.e., more than 50 weight percent of the carrier comprises water. The remainder of the carrier comprises less than 50 weight percent organic solvent, such as less than 25 weight percent or less than 15 weight percent. Based on the total weight of the barrier coating composition (including the carrier and solids), the water may comprise up to about 90 weight percent. In certain nonlimiting embodiments, the barrier coating composition may be substantially solvent-free. The term “substantially solvent-free” as used herein means that the barrier coating composition contains less than about 15 or 20 weight percent organic solvents, such as less than 5 or 10 weight percent, with weight percent being based on the total weight of the coating composition. For example, the coating composition may contain from 0 to 2 or 3 weight percent organic solvents.
- In other nonlimiting embodiments of the present invention, the barrier coating and/or polyurethane dispersions are solvent-based. The term “solvent-based” as used herein refers to a composition in which the carrier fluid is predominantly organic solvent on a weight percent basis, i.e., more than 50 weight percent of the carrier comprises organic solvent. Any compatible suitable organic solvent(s) can be used.
- The barrier coating compositions may form physical crosslinks by drying, that is the coating composition may be a thermoplastic that is cured at ambient or elevated temperature. Alternatively, the coating compositions may comprise crosslinkers that render the coatings thermosetting. Suitable crosslinkers include carbodiimides, aminoplasts, aziridines, zinc/zirconium ammonium carbonates and isocyanates. Water-based carbodiimides and isocyanates may be particularly suitable in some applications because they do not add a significant amount of organic solvent to the barrier coating composition. Aziridines might be particularly suitable in other applications. When a crosslinker is used, it is typically present in an amount of up to about 50 weight percent, based on the total solid weight of the barrier coating. In certain nonlimiting embodiments, use of a crosslinker can result in better barrier. It will be appreciated that when a crosslinker is used, the coating in the present invention will be thermoset, and when a crosslinker is not used, the coating of the present invention will be a thermoplast.
- The present invention is further directed to a method for improving barrier on a substrate comprising applying to the substrate any of the barrier coating compositions described above. Any suitable substrate can be treated according to the present invention. Typically, the substrates will be those that have gas permeability, such as polymers, including but not limited to, polyesters, polyolefins, polyamides, cellulosics, polystyrenes, polyacrylics and polycarbonates. Poly(ethylene terephthalate), poly(ethylene naphthalate), and combinations thereof may be particularly suitable. Other typical substrates will be those that exhibit flexibility and/or elasticity. “Flexible substrate”, “flexibility”, and like terms refer to a substrate that can undergo mechanical stresses, such as bending, stretching and the like, without significant irreversible change. “Elastic substrate”, “elasticity”, and like terms refer to a substrate that will become distorted when it undergoes mechanical stresses, such as bending, stretching and the like, and will substantially return to its original shape when the mechanical stress is removed. Thus, it will be appreciated that a flexible substrate may or may not also be an elastic substrate. Examples of flexible substrates include nonrigid substrates, such as thermoplastic urethane, synthetic leather, natural leather, finished natural leather, finished synthetic leather, ethylene vinyl acetate foam, polyolefins and polyolefin blends, polyvinyl acetate and copolymers, polyvinyl chloride and copolymers, urethane elastomers, synthetic textiles and natural textiles. Elastic substrates include, for example, natural or synthetic rubber.
- Any of the barrier coating compositions described above can be applied to a substrate according to any method known in the art. For example, the coating can be applied by spraying, dipping, brushing, rolling and the like.
- Following application, the coating can be cured by any suitable means.
- Once cured, the coating on the substrate will typically have a dry film thickness of 0.1 to 20 mils, such as 0.5 to 10 or 1 to 2.
- The coatings and methods of the present invention can be used for numerous end-use applications. Examples include but are not limited to athletic balls, such as soccer balls, basketballs, volleyballs, footballs, racquet balls, squash balls, beach balls, tennis balls, golf balls, baseballs, and the like; inflatable rafts; furniture, toys and the like; air mattresses; air bags; air shocks; bladders; emergency slides; life vests; medical equipment and devices, such as blood pressure bags, catheters, and the like; tires, such as bike tires, automobile tires, bike tubes, ultra terrain bike tires, motorcycle tires, lawn tractor tires and the like; balloons; air bladders or other footwear applications; packaging material, such as bottles, wraps, food or plastic sheets; hoses; garbage bags; plastic light bulbs; fire extinguishers; LED displays; plasma TV's; parachutes; scuba tanks; gas cylinders; flexible foam; rigid foam, other pipes, hoses, tubes and the like; architectural needs, such as windows, roofing, siding and the like; fiber optic cables; seals and gaskets; batteries; clothing and other textiles; swimming pool liners and covers; hot tubs; tanks; electronics; buckets and pails.
- As used herein, unless otherwise expressly specified, all numbers such as those expressing values, ranges, amounts or percentages may be read as if prefaced by the word “about”, even if the term does not expressly appear. Any numerical range recited herein is intended to include all sub-ranges subsumed therein. Plural encompasses singular and vice versa. Thus, while the invention has been described in terms of “a” polyurethane, one or more polyurethanes can be used. Similarly, one or more of any of the other additives described herein or standard in the art can be used. Also, as used herein, the term “polymer” is meant to refer to prepolymers, oligomers and both homopolymers and copolymers; the prefix “poly” refers to two or more.
- The following examples are intended to illustrate the invention, and should not be construed as limiting the invention in any way.
- Hydroxyl-functional polyesters were prepared using the following procedure. The ingredients listed in Table 1a were charged to a round-bottomed glass flask equipped with a mechanical stirrer, nitrogen inlet tube, thermometer, steam jacket column, fractionating column, and a distillation head connected to a condenser and a receiver. The resultant mixture was heated to react in a nitrogen atmosphere. At about 160° C., water generated by the esterification process began to be collected. With continuous removal of water, heating continued to 210° C. The reaction was allowed to continue until the acid value was below 3.0 mg KOH/gram, at which time the reaction product was cooled and collected. Table 1a lists the polyester prepared by the foregoing procedure (Polyester Sample No. 1), as well as several other polyesters prepared by a similar procedure. The determined acid value in mg KOH/gram, and hydroxyl value in mg KOH/gram for each sample was determined and is shown in Table 1b, as are the Mw, Mn and Mw/Mn values as determined by GPC (using linear polystyrene standards).
TABLE 1a Polyester Synthesis Hydroxyethyl Polyester Ethylene Diethylene ether of Succinic Dibutyl Sample glycol glycol resorcinol anhydride Isophthalic Adipic tin oxide No. (Eg) (g) (DEG) (g) (HER) (g) (g) acid (g) acid (g) (DBTO) 1 — 4176 — 3500 — — 15.0 2 794.4 — — — 1594.8 — 4.7 3 — — 2137.5 — — 1360.2 6.9 4 627.9 — — — — 1374.8 4.0 5 — 986 — — — 1015 4.0 6 693.8 — — — — 1305.5 4.0 -
TABLE 1b Polyester Analysis Polyester Sample No. Mn Mw Mw/Mn Hydroxyl Value 1 2051 4108 2.0 65.3 1 1809 4381 2.4 62.2 2 822 1573 1.9 139.7 3 1344 2208 1.6 70.3 4 2458 6544 2.7 41.2 5 938 2296 2.4 145.5 6 1072 2203 2.1 142.9 - Polyurethane prepolymers were prepared in a similar manner. The diols were combined (including HER and DMPA) and heated until dissolved. This mixture was then added to isocyanate in an appropriate solvent and held until a specific NCO equivalent weight was reached. Specifically, a polyurethane prepolymer in the form of an isocyanate-functional polymer was prepared in the following manner. Polyester diol Sample No. 1 from Example 1 and Table 1a, 162.9 g, DMPA (2,2-bis(hydroxymethyl)propionic acid), 56.4 g and HER (hydroxyethyl ether of resorcinol), 233.7 g, were charged to a round-bottomed glass flask equipped with a mechanical stirrer, nitrogen inlet, condenser and thermometer. The contents of the flask were slowly heated to 110° C. to dissolve the solids. To a separate round-bottomed glass flask equipped with a mechanical stirrer, nitrogen inlet, condenser and thermometer was added MEK, 420 g, and TDI (toluene diisocyanate), 327 g. The contents of this flask were heated to 60° C. with constant stirring. The heated mixture of diols was then added slowly to the isocyanate solution to form the polyurethane prepolymer. The diols were added at a rate such that the temperature of the reaction did not exceed 80° C. The reaction was held at 80° C. until the NCO equivalent weight was greater than 3000. The resultant polymer had a non-volatile content of 62.2%, the acid value was 17.5 mg KOH/gram and the NCO equivalent weight was 3380. GPC analysis gave Mw=14229, Mn=4478 with Mw/Mn=3.2.
- The isocyanate-functional prepolymer of Example 2 was chain extended and dispersed in water in the following manner. To a round-bottomed glass flask equipped with a mechanical stirrer, nitrogen inlet, condenser and thermometer was added deionized water, 1533 g, MXDA (m-xylylenediamine), 23.0 g, and DMEA (dimethylethanol amine), 33.4 g. The contents of the flask were heating with stirring to 50° C. The polyurethane prepolymer of Example 2 was then dropped into the aqueous mixture over about 15 minutes followed by an MEK rinse, 60 g, resulting in a milky-white dispersion. The dispersion was then put under vacuum to remove MEK to a level of less than 0.1% by weight. The resultant dispersion had a non-volatile content of 35.8%, the pH was 8.9, meq acid was 0.195 and meq base was 0.197. GPC analysis (dmf) yielded Mw=40360, Mn=10802 with Mw/Mn=3.7.
- Table 2 lists the ingredients of the polyurethane dispersion prepared in the foregoing example (Dispersion Code No. 1), as well as ingredients of several other polyurethane dispersions prepared in a similar manner using polyester diols. The values listed in Table 2 represent grams of each listed ingredient.
TABLE 2 Polyurethane Dispersions (Polyester) Polyester Sample No. (from Table 1a) 1 3 6 5 4 DEG/ 2 HER/ EG/ DEG/ EG/ Dispersion succinic EG/ adipic adipic adipic adipic Code No. anhydride isophthalic acid acid acid acid DMPA HER TDI m-pyrol 1 162.9 — — — — — 56.4 233.7 327.0 — 2 68.5 — — — — — 48.0 230.8 302.7 57.9 3 107.3 — — — — — 46.0 194.9 301.8 — 4 123.3 — — — — — 46.3 194.9 285.5 — 5 162.9 — — — — — 56.4 233.7 327.0 72.8 6 256.8 — — — — — 86.9 373.5 527.5 — 7 — — — 139.8 — — 46.2 196.5 267.4 — 8 — — — — 123.2 — 46.2 195.4 285.4 — 9 — — — — — 123.6 46.0 195.6 284.8 — 10 — 142.7 — — — — 46.1 175.6 285.4 48.3 11 268.3 — — — — — 90.8 390.0 551.0 — 12 33.9 — — — — — 11.8 48.7 68.1 — 13 33.9 — — — — — 11.8 48.7 68.1 15.2 14 62.5 — — — — — 37.0 181.8 238.6 — 15 118.0 — 106.2 — — — 46.0 141.6 238.3 65.0 16 47.8 — — — — — 11.7 40.6 62.4 16.5 17 730.3 — — — — — 57.3 — 188.1 81.2 18 62.5 — — — — — 37.0 181.8 238.6 — 19 161.3 — — — — — 46.9 162.3 279.5 59.0 20 162.9 — — — — — 56.4 233.7 327.0 72.8 21 286.7 — — — — — 70.1 243.8 374.4 98.8 22 162.9 — — — — — 56.4 233.7 327.0 72.8 23 191.2 — — — — — 46.7 162.5 249.6 65.8 24 191.2 — — — — — 46.7 162.5 249.6 65.8 25 376.4 — — — — — 67.2 193.9 337.5 102.1 26 268.3 — — — — — 90.8 390.0 551.0 — 27 240.4 — — — — — 81.3 349.6 493.9 — 28 174.6 — — — — — 40.9 182.1 252.4 — 29 274.6 — — — — — 68.7 192.2 439.4* — Dispersion DI MICROLITE MICROLITE Code No. MEK Water MXDA DMEA 923 963 HEEU MEK 1 420.0 1533.2 23.0 33.4 — — — 60.0 2 292.1 1306.4 20.3 24.9 — — — 50.0 3 350.0 1742.8 39.9 29.3 — — — 0.0 4 350.0 1693.0 25.0 27.7 — — — 0.0 5 347.1 1629.0 12.7 34.1 — — — 60.0 6 670.3 2181.0 41.3 52.5 — 1714.3 — 95.7 7 350.0 1720.1 15.4 28.6 — — — 50 8 349.8 1710.7 17.6 28.4 — — — 50 9 350.0 1680.8 12.3 24.9 — — — 50 10 301.9 1766 24.2 26.5 — — — 50 11 700.0 1300.0 39.9 50.6 — 1746.6 — 100.0 12 87.5 160.0 4.8 6.3 206.0 — — 12.5 13 72.3 219.3 2.7 7.1 217.3 — 11.6 12.5 14 280.0 864.4 14.7 21.6 — 692.0 — 40.0 15 285.0 1665.3 20.9 25.6 — — — 50 16 71.0 219.3 3.4 7.2 217.3 — 11.9 12.5 17 444.1 2647.1 15.2 39.7 — — — 75.0 18 280.0 1402.1 14.7 21.6 — — — 40.0 19 291.1 1628.4 40.4 27.8 — — 50.3 50.0 20 347.1 1728.0 12.7 34.1 — — 55.6 60.0 21 426.2 2647.1 17.1 42.6 — — 69.6 75.0 22 347.1 1734.8 15.1 34.1 — — 55.8 60.0 23 284.2 1541.4 13.6 28.9 — — — 50.0 24 284.2 1494.0 13.6 28.9 — — 47.4 50.0 25 422.9 2173.1 17.3 33.1 — — 69.6 75.0 26 700.0 1938.4 40.0 50.7 — 1746.6 — 100.0 27 749.8 2681.0 41.3 52.5 — 1714 — 95.0 28 350.0 1604.8 12.7 27.0 — — — 50.0 29 525.1 2711.0 16.1 40.3 — — — 50.0
*TMXDI was used in place of TDI.
MICROLITE 923 and 963 are supplied at 7.5% solids in water. MICROLITE is a dispersion of vermiculite sold by W. R. Grace.
HEEU—hydroxyethyl ethylene urea
MEK—methyl ethyl ketone.
- Table 3 lists additional polyurethane dispersions prepared without polyester. These polyurethane prepolymers and dispersions were prepared in substantially the same way as described in Examples 2 and 3.
TABLE 3 Polyurethane Dispersions (Non-Polyester) Dispersion JEFFAMINE m- DI Code No. DMPA TEG DEG EG XTJ-500 HER TDI pyrol MEK Water 30 45.4 63.4 — — — 213.4 327.6 46.5 303.5 1212.9 31 30.2 — 14.7 8.8 — 140.6 228.2 32.4 195.1 1030.8 32 30.2 — 14.7 8.8 — 140.6 228.2 32.4 195.1 992.2 33 47.2 — — — 67.4 226.8 308.7 49.4 300.6 1220.4 Dispersion MICROLITE MICROLITE Code No. MXDA DMEA 923 963 HEEU MEK 30 14.7 24.9 — — — 0 31 12.2 15.3 — — — 32.5 32 0 16.8 — — — 32.5 33 17.5 24.9 — — — 0
TEG—tetraethylene glycol.
JEFFAMINE XTJ-500 is a polyether diamine commercially available from Huntsman.
- Several coating materials having compositions as listed below in Table 4 were spray-applied to Mylar sheets, and subjected to oxygen barrier testing. The results are listed in Table 4. All of the oxygen permeabilities were measured using an OXTRAN 2/20 at 36 percent R.H., unless otherwise indicated.
TABLE 4 Coated Mylar Oxygen Barrier Properties Filler Coating Dispersion Composition Coating PO2 of the Code No. Code No. and Amount Thickness coating M1 2 0.1/1 p/b 0.25 mil 0.01 Microlite 963 M2 2 0.1/1 p/b 0.52 mil 0.02 Microlite 963 M3 30 0.1/1 p/b 0.44 mil 0.02 Microlite 963 M4 1 0.1/1 p/b 0.32 mil 0.02 Microlite 963 M5 3 0.1/1 p/b 0.33 mil 0.02 Microlite 963 M6 4 0.1/1 p/b 0.31 mil 0.02 Microlite 963 M7 2 0.1/1 p/b 0.48 mil 0.03 Microlite 923 M8 2 0.06/1 p/b 0.35 mil 0.03 Microlite 923 M9 5 0.1/1 p/b 0.61 mil 0.03 Microlite 963 M10 5 0.1/1 p/b 0.61 mil 0.03 Microlite 963++ M11 2 0.1/1 p/b 0.47 mil 0.03 Microlite 963 M12 31 0.1/1 p/b 0.57 mil 0.03 Microlite 963 M13 32 0.1/1 p/b 0.56 mil 0.03 Microlite 963 M14 1 0.1/1 p/b 0.67 mil 0.03 Microlite 963 M15 6 0.1/1 p/b 0.56 mil 0.03 Microlite 963 M16 7 0.1/1 p/b 0.37 mil 0.03 Microlite 963 M17 8 0.1/1 p/b 0.55 mil 0.03 Microlite 963 M18 9 0.1/1 p/b 0.35 mil 0.03 Microlite 963 M19 2 0.1/1 p/b 0.48 mil 0.04 Microlite 923 M20 33 0.1/1 p/b 0.44 mil 0.04 Microlite 963 M21 10 0.1/1 p/b 0.39 mil 0.04 Microlite 963 M22 10 0.1/1 p/b 0.41 mil 0.04 Microlite 963 M23 11 0.58 mil 0.05 M24 11 0.1/1 p/b 0.47 mil 0.048 Microlite 963 M25 2 0.08/1 p/b 0.38 mil 0.05 Microlite 923 M26 5 0.08/1 p/b 0.17 mil 0.05 Microlite 923 M27 11 0.1/1 p/b 0.50 mil 0.053 Microlite 963 M28 2 0.06/1 p/b 0.42 mil 0.06 Microlite 963 M29 5 0.12/1 p/b 0.30 mil 0.06 Microlite 923 M30 12 0.1/1 p/b 0.91 mil 0.07 Microlite 923 M31* 2 0.1/1 p/b 0.25 mil 0.08 Microlite 963 M32 12 0.1/1 p/b 1.17 mil 0.1 Microlite 923 M33 14 0.60 mil 0.12 M34 5 0.05/1 p/b 0.60 mil 0.12 Microlite 963 M35** 1 0.1/1 p/b 0.67 mil 0.13 Microlite 963 M36 15 0.1/1 p/b 0.65 mil 0.14 Microlite 963 M37 14 0.60 mil 0.22 M38 2 0.1/1 p/b mica 0.49 mil 0.33 M39 16 0.1/1 p/b 0.58 Microlite 923 M40 1 0.45 mil 0.6 M41 5 0.01/1 p/b 0.49 mil 0.67 Microlite 963 M42 5 (1/3) 0.49 mil 0.67 32 (2/3) M43 5 0.1/1 p/b 0.71 mil 0.68 Microlite 963++ M44 2 0.42 mil 0.69 M45 5 0.1/1 p/b mica 0.32 mil 0.7 M46 5 0.08/1 p/b mica 0.20 mil 0.74 M47 5 0.06/1 p/b mica 0.28 mil 0.79 M48 5 (1/3) 0.54 mil 0.81 30 (2/3) M49 5 (1/3) 0.63 mil 0.84 31 (2/3) M50 5 0.1/1 p/b Cloisite 0.73 mil 0.85 NA+ clay M51 17 0.1/1 p/b 0.36 mil 0.9 Microlite 923 M52 7 0.34 mil 0.91 M53 5 0.1/1 p/b 0.46 mil 0.98 Nanocor M54 33 0.86 mil 1.09 M55** 1 0.45 mil 1.36 M56 5 0.68 mil 1.51 M57 5 0.50 mil 1.65 M58 18 (2/10) 0.40 mil 1.65 14 (8/10) M59 20 0.30 mil 2.29 M60 15 0.86 mil 2.8 M61 22 0.40 mil 2.97 M62 18 (4/10) 0.50 mil 5.29 14 (6/10) M63 8 n.g. M64 32 n.g. M65 30 n.g. M66 31 n.g. M67 10 n.g. M68 10 n.g. M69 18 n.g. M70 9 n.g.
*72-76% R.H.
**76% R.H.
- As shown in Table 4, the gas barrier coatings possess excellent oxygen barrier properties.
- Two coating materials having compositions as listed below in Table 6 were spray-applied to 0.6 mil thick polypropylene sheets, and subjected to permeance testing similar to Example 6 with Mocon Company's OXTRAN 2/20 at 23° C. and 50% R.H. (N2 and O2) for Coating P1 and at 78% R.H. (N2) and 85% R.H. (O2) for Coating P2. The results are listed in Table 6.
TABLE 5 Coated Polypropylene Oxygen Barrier Properties Coating Filler Code Dispersion Composition Coating Permeance No. Code No. and Amount Thickness cc/m/day P1 26 Microlite 963 0.89 mil 0.66 0.1/1 p/b P2 26 Microlite 963 0.89 mil 14.7 0.1/1 p/b - A polyester prepolymer was prepared in a four-neck round bottom flask equipped with an electronic temperature probe, mechanical stirrer, condenser, dry nitrogen sparge, and a heating mantle. The following ingredients were used:
diethylene glycol 3500.0 g succinic anhydride 4176.0 g dibutyltin oxide 15.0 g - The ingredients were charged to the flask and the temperature was gradually increased to 210° C. over a four-hour period while stirring, sparging with nitrogen, and collecting the distillate. The reaction temperature was then held at 210° C. for 20 hours until the acid value dropped to 10.6 and 561 ml of distillate was collected. The final product was a dark orange liquid with a Gardner-Holdt viscosity of Z6+, an acid value of 10.6, a number average molecular weight (MN) of 1734, a weight average molecular weight (Mw) of 3394, and a nonvolatile content of 98.5% (measured at 110° C. for one hour).
- A polyurethane dispersion with TDI and 20 percent HER was prepared in a four-neck round bottom flask equipped with an electronic temperature probe, mechanical stirrer, condenser, nitrogen atmosphere, and a heating mantle. The following ingredients were used:
Charge A toluene diisocyanate (TDI) 470.0 g methyl ethyl ketone 548.0 g Charge B N-methyl pyrrolidinone 84.0 g dimethylolpropionic acid (DMPA) 93.6 g polyester pre-polymer of Example 1 582.4 g 1,3-bis(2-hydroxyethoxy) benzene (or 270.0 g hydroxyethyl resorcinol, HER) Charge C methyl ethyl ketone 40.0 g Charge D methyl ethyl ketone 105.0 g Charge E water 2173.1 g dimethylethanolamine 33.1 g hydroxyethyl ethyleneurea (HEEU) 69.6 g meta-xylene diamine (MXDA 17.3 g Charge F methyl ethyl ketone 75.0 g - Charge A was stirred in the flask at a temperature of 75° C. Charge B was heated in a separate flask to a temperature of 90° C. and added to Charge A over a one hour period at a temperature of 80° C. Charge C was used to rinse the Charge B flask and then added to the reaction mixture. The reaction mixture was held at 80° C. for an additional three hours at which time Charge D was added. Charge E was heated to 50° C. in a separate 12 liter four-neck round-bottom flask under a nitrogen atmosphere. 1500.0 g of the reaction product of Charges A, B, C, and D was added to Charge E over a ten-minute period followed by the addition of Charge F. The methyl ethyl ketone was removed by vacuum distillation at 50° C. The final dispersion had a Brookfield viscosity of 512 centipoise (spindle #2, 60 rpm), an acid value of 12.2, a pH of 7.1, and a nonvolatile content of 37.6% (measured at 110° C. for one hour).
- A polyurethane dispersion with TDI and no HER was prepared in a four-neck round bottom flask equipped with an electronic temperature probe, mechanical stirrer, condenser, nitrogen atmosphere, and a heating mantle. The following ingredients were used:
Charge A toluene diisocyanate (TDI) 193.0 g methyl ethyl ketone 377.0 g Charge B N-methyl pyrrolidinone 22.0 g dimethylolpropionic acid (DMPA) 64.0 g polyester pre-polymer of Example 7 782.0 g Charge C methyl ethyl ketone 40.0 g Charge D water 1714.0 g dimethylethanolamine 26.2 g hydroxyethyl ethyleneurea (HEEU) 54.9 g meta-xylene diamine (MXDA) 10.0 g Charge E methyl ethyl ketone 59.4 g - Charge A was stirred in the flask at a temperature of 70° C. Charge B was heated in a separate flask to a temperature of 90° C. and added to charge A over a thirty minute period at a temperature of 80° C. Charge C was used to rinse the Charge B flask and then added to the reaction mixture. The reaction mixture was held at 80° C. for an additional five hours. Charge D was heated to 50° C. in a separate 12 liter four-neck round-bottom flask under a nitrogen atmosphere. 1188.0 g of the reaction product of Charges A, B, and C was added to Charge D over a ten-minute period followed by the addition of Charge E. The methyl ethyl ketone was removed by vacuum distillation at 50° C. The final dispersion had a Brookfield viscosity of 731 centipoise (spindle #3, 60 rpm), an acid value of 12.1, a pH of 6.6, and a nonvolatile content of 41.7% (measured at 110° C. for one hour).
- A coating according to the present invention was prepared as follows:
Name Weight Polyurethane dispersion of Example 8 25.32 Polyurethane dispersion of Example 9 22.45 Both under agitation, stir together DARAN SL-1431 51.49 Neutralize to pH 6-6.5 with ammonia under agitation Add slowly to polyurethane dispersion mixture, stir 10 minutes LW-442 0.58 Add under agitation, stir 5 minutes XHD-47J3 0.16 Add under agitation, stir 5 minutes TOTAL 100.0
1PVDC terpolymer from Hampshire Corporation, Ammonia (KAR-5995).
2Associative thickener from Bayer Corporation.
3Defoamer from Ultra Additives.
- The elongation and P(O2) of the coating were as follows:
Elongation @ 25° C.4 P(O2)5 400% 2.26
4Obtained from Instron measurement, in which a rectangular sample (½ inch wide, 3 inches long) is stretched.
5Measured by Mocon equipment using Oxygen as test gas; unit is cc-mil/100 in2-day-atm at 0% relative humidity.
- Whereas particular embodiments of this invention have been described above for purposes of illustration, it will be evident to those skilled in the art that numerous variations of the details of the present invention may be made without departing from the invention as defined in the appended claims.
Claims (19)
1. A barrier coating comprising a polyurethane dispersion comprising at least 30 weight percent of meta-substituted aromatic material.
2. The coating of claim 1 , wherein the meta-substituted aromatic material comprises TDI, HER, MXDA, TMXDI and/or isophthalic acid.
3. The coating composition of claim 1 , wherein the polyurethane dispersion is water-based.
4. The coating composition of claim 1 , wherein the polyurethane dispersion is solvent-based.
5. The coating composition of claim 1 , wherein the polyurethane dispersion comprises a polyester polyol.
6. The coating of claim 1 , wherein the polyurethane has a Molar Permachor Number of at least 50.
7. The coating of claim 1 , further comprising a crosslinker.
8. The coating of claim 7 , wherein the crosslinker comprises aziridine.
9. The coating of claim 1 , wherein the polyurethane dispersion comprises a blend of two or more polyurethane dispersions.
10. The coating of claim 1 , further comprising one or more polymers.
11. The coating of claim 10 , wherein the one or more polymers imparts additional barrier to the coating.
12. The coating of claim 11 , wherein one of the polymers is polyvinylidene chloride and/or copolymers comprising polyvinylidene chloride.
13. The coating of claim 1 , further comprising a colorant.
14. The coating of claim 1 , further comprising a high aspect ratio pigment.
15. The coating of claim 13 , wherein the colorant is a polyester nylon composite.
16. A barrier coating having a Molar Permachor Number of at least 50.
17. A method for improving barrier on the substrate, comprising applying to the substrate the coating of claim 1 .
18. The method of claim 17 , wherein the substrate is a flexible substrate.
19. The method of claim 17 , wherein the substrate is an elastic substrate.
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US11/072,834 US20050197481A1 (en) | 2004-03-05 | 2005-03-04 | Barrier coating comprising a polyurethane dispersion |
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US55049104P | 2004-03-05 | 2004-03-05 | |
US11/072,834 US20050197481A1 (en) | 2004-03-05 | 2005-03-04 | Barrier coating comprising a polyurethane dispersion |
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US11/072,832 Abandoned US20050197480A1 (en) | 2004-03-05 | 2005-03-04 | Barrier coating comprising a polyurethane dispersion and elastomeric material |
US11/072,834 Abandoned US20050197481A1 (en) | 2004-03-05 | 2005-03-04 | Barrier coating comprising a polyurethane dispersion |
US12/728,585 Active 2025-08-13 US8716402B2 (en) | 2004-03-05 | 2010-03-22 | Barrier coating comprising a polyurethane dispersion and elastomeric material |
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US11/072,832 Abandoned US20050197480A1 (en) | 2004-03-05 | 2005-03-04 | Barrier coating comprising a polyurethane dispersion and elastomeric material |
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US12/728,585 Active 2025-08-13 US8716402B2 (en) | 2004-03-05 | 2010-03-22 | Barrier coating comprising a polyurethane dispersion and elastomeric material |
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WO (2) | WO2005093001A1 (en) |
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- 2005-03-04 US US11/072,832 patent/US20050197480A1/en not_active Abandoned
- 2005-03-04 US US11/072,834 patent/US20050197481A1/en not_active Abandoned
- 2005-03-04 WO PCT/US2005/006878 patent/WO2005093000A1/en active Application Filing
-
2010
- 2010-03-22 US US12/728,585 patent/US8716402B2/en active Active
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US20080176061A1 (en) * | 2002-09-17 | 2008-07-24 | Ppg Industries Ohio, Inc. | Substrates and articles of manufacture coated with a waterborne 2k coating composition |
US8389113B2 (en) * | 2002-09-17 | 2013-03-05 | Ppg Industries Ohio, Inc. | Substrates and articles of manufacture coated with a waterborne 2K coating composition |
US7078453B1 (en) * | 2003-08-29 | 2006-07-18 | Inmat Inc. | Barrier coating of a non-butyl elastomer and a dispersed layered filler in a liquid carrier and coated articles |
US9079374B2 (en) | 2007-05-04 | 2015-07-14 | Innovia Films Limited | Sealable, peelable film |
US20100189938A1 (en) * | 2007-05-04 | 2010-07-29 | Innovia Films Limited | Sealable, peelable film |
US11254096B2 (en) | 2007-05-04 | 2022-02-22 | Innovia Films Limited | Sealable, peelable film |
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US20100237603A1 (en) * | 2007-07-24 | 2010-09-23 | Innovia Films Limited | Indicia means |
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US8664307B2 (en) | 2007-07-24 | 2014-03-04 | Innovia Films Limited | UV barrier film |
US20140010858A1 (en) * | 2007-08-03 | 2014-01-09 | Abbott Cardiovascular Systems Inc. | Polymers For Implantable Devices Exhibiting Shape-Memory Effects |
US9066992B2 (en) * | 2007-08-03 | 2015-06-30 | Abbott Cardiovascular Systems Inc. | Polymers for implantable devices exhibiting shape-memory effects |
US9027170B2 (en) | 2008-12-09 | 2015-05-12 | Dainese S.P.A. | Personal protection device and garment incorporating said device |
US9554602B2 (en) | 2008-12-09 | 2017-01-31 | Dainese S.P.A. | Garment combined with a device for the personal protection of a user |
US20100155292A1 (en) * | 2008-12-18 | 2010-06-24 | Innovia Films Limited | Naked collation package |
US9200179B2 (en) | 2009-03-27 | 2015-12-01 | Mitsui Chemicals, Inc. | Polyurethane dispersion and method for producing the same |
US20110224019A1 (en) * | 2010-03-10 | 2011-09-15 | Nike, Inc. | Hydrophobic Thermoplastic Polyurethane As A Compatilizer For Polymer Blends For Golf Balls |
US8598275B2 (en) | 2010-03-10 | 2013-12-03 | Nike, Inc. | Hydrophobic thermoplastic polyurethane as a compatilizer for polymer blends for golf balls |
US20110224018A1 (en) * | 2010-03-10 | 2011-09-15 | Nike, Inc. | Golf Ball Having Moisture Resistant Layer |
US20110224023A1 (en) * | 2010-03-10 | 2011-09-15 | Nike, Inc. | Golf Ball Having Ionomer/Hydrophobic Thermoplastic Polyurethane Layers |
US20110224021A1 (en) * | 2010-03-10 | 2011-09-15 | Nike, Inc. | Golf Ball Having Moisture Resistant Adhesive Layer |
US20110224024A1 (en) * | 2010-03-10 | 2011-09-15 | Nike, Inc. | Golf Ball Having A Protective Coating |
US20140110924A1 (en) * | 2011-06-30 | 2014-04-24 | Dainese S.P.A. | Protection device |
Also Published As
Publication number | Publication date |
---|---|
US20050196601A1 (en) | 2005-09-08 |
US20050197480A1 (en) | 2005-09-08 |
US20100174032A1 (en) | 2010-07-08 |
US8716402B2 (en) | 2014-05-06 |
WO2005093001A1 (en) | 2005-10-06 |
WO2005093000A1 (en) | 2005-10-06 |
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Legal Events
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Owner name: PPG INDUSTRIES OHIO, INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TEMPLE, RODGER G.;FALER, DENNIS L.;NGUYEN, DIEP;AND OTHERS;REEL/FRAME:016359/0368;SIGNING DATES FROM 20050301 TO 20050302 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |