US33331A - Improvement in processes of coloring skins and leather - Google Patents
Improvement in processes of coloring skins and leather Download PDFInfo
- Publication number
- US33331A US33331A US33331DA US33331A US 33331 A US33331 A US 33331A US 33331D A US33331D A US 33331DA US 33331 A US33331 A US 33331A
- Authority
- US
- United States
- Prior art keywords
- iron
- skins
- improvement
- leather
- processes
- 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.)
- Expired - Lifetime
Links
- 210000003491 Skin Anatomy 0.000 title description 34
- 238000000034 method Methods 0.000 title description 10
- 238000004040 coloring Methods 0.000 title description 8
- 239000010985 leather Substances 0.000 title description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 56
- 229910052742 iron Inorganic materials 0.000 description 28
- VXMKYRQZQXVKGB-CWWHNZPOSA-N Tannin Chemical compound O([C@H]1[C@H]([C@@H]2OC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)O[C@H]([C@H]2O)O1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 VXMKYRQZQXVKGB-CWWHNZPOSA-N 0.000 description 16
- 235000018553 tannin Nutrition 0.000 description 16
- 229920001864 tannin Polymers 0.000 description 16
- 239000001648 tannin Substances 0.000 description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 239000001828 Gelatine Substances 0.000 description 8
- 229920000159 gelatin Polymers 0.000 description 8
- 235000019322 gelatine Nutrition 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000001066 destructive Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 230000003389 potentiating Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000012047 saturated solution Substances 0.000 description 2
- 239000008234 soft water Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/32—Material containing basic nitrogen containing amide groups leather skins
Definitions
- the skins to be colored should first be subjected to the action of a sol ution of tannin until this acid has combined to a greater or less extent with the gelatine of the skin, and thus receive the characteristic color communicated to skins by a common solution of tannin, or the skins may be thoroughly tanned. In either case they are ready for the next step in the process.
- the hydrochloric acid is decomposed, setting the hydrogen thereof free, and forming by the union of the chlorine and iron the protochloride of that metal.
- Skins that have been thoroughly tanned may by immersion in this iron-liquor be colcred through their entire thickness.
- the manipulations in this process may be varied as follows without essentially chang ing the nature of the invention.
- the skins to be colored may be first subjected to the action of the protochloride of iron, and subsequently to the action of tannin; but this method is less economical than the former as regards the tannin.
- the acetate of iron which is frequently used, is also prejudicial, having a hardening and decomposing tendency.
- Acetic acid being a solvent of gelatine, and at the same time being potent to break up the chemical union between the gelatine and tannin, (in leat-her,)
Description
UNITED STATES PATENT OFFICE.
. JEHU BRA INERD, OF CLEVELAND, OHIO.
IMPROVEMENT IN PROCESSES 0F 'COLORING SKINS AND LEATHER.
Specification forming part of Letters Patent No. 33,331, dated September 24, 1861.
To all whom it may concern:
Be it known that l, JEHU BaArNERn, of
Cleveland, in the county of Ouyahoga and State of Ohio, have invented new and useful improvements .in coloring or dyein gskinsblack and various shades of a lighter hue; and I do hereby declare that the following is a full and complete description of the ingredients used and the manipulations thereof. v The nature of my improvement relates to the use of the protochloride of iron in solution as a basis of a color for skins that have been previously subjected to the action of tannin, the advantages and benefits whereof are hereinafter stated.
The skins to be colored should first be subjected to the action of a sol ution of tannin until this acid has combined to a greater or less extent with the gelatine of the skin, and thus receive the characteristic color communicated to skins bya common solution of tannin, or the skins may be thoroughly tanned. In either case they are ready for the next step in the process. I now prepare an iron liquor by dissolving metallic iron in pure hydrochloric acid of the shops at a temperature of about 80 Fahrenheit, until all efiervesoence ceases, leaving metallic iron in excess. In this process the hydrochloric acid is decomposed, setting the hydrogen thereof free, and forming by the union of the chlorine and iron the protochloride of that metal. I now take a fluid ounce of this saturated solution of iron and dilute it with about six gallons of pure soft water and immerse the skins (prepared as above) therein for a period of about four or five minutes, keeping them in constant motion or the dilute iron liquor, prepared as above,may be applied to the grain of the skin with a brush. From this iron-liquor bath the skins should be immediately transferred to a bath of clean water and thoroughly washed, in order to free them from any hydrochloric acid that may have been formed by the decomposition of the protochloride of ironby this latter element entering into a new combination with the tannin; or they may be subjected to the action of a bath made slightly alkaline with ammonia to neutralize any free acid formed as above.
or two, however, ofsuch exposure will be sufli cient.
A weaker iron-liquor than that before named will give a correspondingly lighter shade of color.
Skins that have been thoroughly tanned may by immersion in this iron-liquor be colcred through their entire thickness.
If it is desirable to color only the surface of the skin, it should be set out upon the table while wet and the iron-liquor applied, as hereinbefore stated, by means of a brush.
The manipulations in this process may be varied as follows without essentially chang ing the nature of the invention. The skins to be colored may be first subjected to the action of the protochloride of iron, and subsequently to the action of tannin; but this method is less economical than the former as regards the tannin.
The advantages of the herein described mode of coloring skins may be stated as follows:
First. The expense in material, time, and labor is less than thatof any other preparation of iron.
Second. The color is more permanent and beautiful.
Third. The texture and strength of the skin is not injured thereby.
In the use of other soluble salts of iron. for this purpose the integrity of the skin is to a greater or less extent destroyed. This is especially true as regards the use of the protosulphate of iron, (copperas) The minutest quantity of free sulphuric acid exerts its destructive influence upon the fibrinated gelatine of the skin. The same is true of the nitrate and other soluble salts of iron, but to a less degree.
The acetate of iron, which is frequently used, is also prejudicial, having a hardening and decomposing tendency. Acetic acid, being a solvent of gelatine, and at the same time being potent to break up the chemical union between the gelatine and tannin, (in leat-her,)
renders tanned skins, or partially tanned The herein-described. use of the protochloskins, hardand. brittle. ride of iron, in combination with tannin, sub- This improvement embraces a general freestantially as and for the purpose specified. dom from all the objections above enumer- J E EU BRAINERD. ated. Witnesses: What Iclaim as my improvemenflanddesire EDM. F. BROWN, to secure by Letters Patent, is- T. T. EVERETT.
Publications (1)
Publication Number | Publication Date |
---|---|
US33331A true US33331A (en) | 1861-09-24 |
Family
ID=2102931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US33331D Expired - Lifetime US33331A (en) | Improvement in processes of coloring skins and leather |
Country Status (1)
Country | Link |
---|---|
US (1) | US33331A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090187206A1 (en) * | 2006-05-26 | 2009-07-23 | Binmoeller Kenneth F | Conformationally-Stabilized Intraluminal Device for Medical Applications |
-
0
- US US33331D patent/US33331A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090187206A1 (en) * | 2006-05-26 | 2009-07-23 | Binmoeller Kenneth F | Conformationally-Stabilized Intraluminal Device for Medical Applications |
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