US682825A - Tanning or dressing hides, skins, or the like. - Google Patents
Tanning or dressing hides, skins, or the like. Download PDFInfo
- Publication number
- US682825A US682825A US3787500A US1900037875A US682825A US 682825 A US682825 A US 682825A US 3787500 A US3787500 A US 3787500A US 1900037875 A US1900037875 A US 1900037875A US 682825 A US682825 A US 682825A
- Authority
- US
- United States
- Prior art keywords
- tanning
- skins
- hides
- hydroxid
- dressing
- 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
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical class [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- BHMLFPOTZYRDKA-IRXDYDNUSA-N (2s)-2-[(s)-(2-iodophenoxy)-phenylmethyl]morpholine Chemical compound IC1=CC=CC=C1O[C@@H](C=1C=CC=CC=1)[C@H]1OCCNC1 BHMLFPOTZYRDKA-IRXDYDNUSA-N 0.000 description 1
- 235000014145 Caesalpinia bonduc Nutrition 0.000 description 1
- 244000036978 Caesalpinia bonduc Species 0.000 description 1
- 235000009133 Caesalpinia coriaria Nutrition 0.000 description 1
- 235000005082 Caesalpinia paraguariensis Nutrition 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 235000007748 Quercus prinus Nutrition 0.000 description 1
- 244000025767 Quercus prinus Species 0.000 description 1
- 244000264648 Rhus coriaria Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- NNBFNNNWANBMTI-UHFFFAOYSA-M brilliant green Chemical compound OS([O-])(=O)=O.C1=CC(N(CC)CC)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](CC)CC)C=C1 NNBFNNNWANBMTI-UHFFFAOYSA-M 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- -1 chromium-hydroxid compound Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- KIEOKOFEPABQKJ-UHFFFAOYSA-N sodium dichromate Chemical compound [Na+].[Na+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KIEOKOFEPABQKJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
- C14C3/06—Mineral tanning using chromium compounds
Definitions
- the tanning of animal hides and the like may be effected in various diiferent manners.-
- I disclose a method of preparing a fiuorinated chromium compound by means of which the tanning of hides and such like may be very quickly and perfectly effected.
- the fluorinated chromium hydroxid which I- prefer "to employ for the tanning process is preferably prepared as follows: One hundred kilograms sodium bichromate are dissolved in four times the quantity of water and mixed with five kilograms formalin, (forty per cent. aqueous solution of formaldehyde in water.) To this solution are added two hundred kilograms of ten per cent. hydrofluoric acid, and the whole is then heated at 60 to 70 centigrade until a test portion taken from the same gives with caustic potash in excess the emerald-green coloration peculiar to the chromium-hydroxid compound.
- the fluorinated chromium hydroxid is added to water to make a solution containing four per cent. of the hydroxid or in the same proportion to a so lution of I uebracho, sumach, chestnut-oak, divi-divi, ning purposes.
- the hide is then rinsed and drawn through a weak bath of milk of lime, soap, or other alkaline bath in order to bind any free acid present which might have prejudicial efiect in the further treatment of the hide, especially'in the dyeing.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
UNITED STATES PATENT OF ICE.
FRIEDRICH VALENT'INER, OF LE'IPSIO-PLAGWITZ, GERMANY.
TANNING OR DRESSING HIDES, SKINS, OR THE LIKE.
fsPIEGIFIGA'lION forming part of Letters Patent No. 682,825, dated September 1'7, 1901 Application filed November 27, 1900. Serial No. 37,875. (N0 specimens.)
To all whom it may concern:
Be it known that I, FRIEDRICH VALEN- TINER, a subject of the King of Saxony, residing at Leipsic-Plagwitz, in the Kingdom of Saxony, German Empire, have invented specification.
The tanning of animal hides and the like may be effected in various diiferent manners.- In the following description I disclose a method of preparing a fiuorinated chromium compound by means of which the tanning of hides and such like may be very quickly and perfectly effected.
My invention can with advantage be carried out in the following manner: The fluorinated chromium hydroxid which I- prefer "to employ for the tanning process is preferably prepared as follows: One hundred kilograms sodium bichromate are dissolved in four times the quantity of water and mixed with five kilograms formalin, (forty per cent. aqueous solution of formaldehyde in water.) To this solution are added two hundred kilograms of ten per cent. hydrofluoric acid, and the whole is then heated at 60 to 70 centigrade until a test portion taken from the same gives with caustic potash in excess the emerald-green coloration peculiar to the chromium-hydroxid compound. The fluorinated chromium hydroxid is added to water to make a solution containing four per cent. of the hydroxid or in the same proportion to a so lution of I uebracho, sumach, chestnut-oak, divi-divi, ning purposes.
Example: A hide or butt, of'twenty kilo-' grams weight, intended .for ordinary sole leather, is introduced into a vat containing forty kilograms of asolution of four-per-cent. strength of fluorinated chromium hydroxid and left in the solution, being frequently stirred, until test pieces cut off at the thickest parts of the hide show that the tanning process is completed. The hide is then rinsed and drawn through a weak bath of milk of lime, soap, or other alkaline bath in order to bind any free acid present which might have prejudicial efiect in the further treatment of the hide, especially'in the dyeing. The treat ment of the hides by the finorinated chro= mium hydroxid in solution results in the pro duction of a leather which when further treated by the processes usually employed issuitable for the uses to which leather is com- I monly put.
What I claim, and desire to secure by Lettors Patent of the United States, is-
A method of tanning or dressing skins,
hides and the like, comprising the treatment of the same with a fluorin compound of chromium hydroxid.
In testimony whereof I have hereunto set my hand in the presence of two witnesses. FRIEDRICH VALENTINER. Witnesses:
RUDOLPH FRIOKE, OHAs. J. BURT.
c., of the usual strength for tau
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3787500A US682825A (en) | 1900-11-27 | 1900-11-27 | Tanning or dressing hides, skins, or the like. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3787500A US682825A (en) | 1900-11-27 | 1900-11-27 | Tanning or dressing hides, skins, or the like. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US682825A true US682825A (en) | 1901-09-17 |
Family
ID=2751368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US3787500A Expired - Lifetime US682825A (en) | 1900-11-27 | 1900-11-27 | Tanning or dressing hides, skins, or the like. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US682825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996820A (en) * | 1998-04-23 | 1999-12-07 | Broadnax; Sean | Hanging rack for beef jerky |
-
1900
- 1900-11-27 US US3787500A patent/US682825A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5996820A (en) * | 1998-04-23 | 1999-12-07 | Broadnax; Sean | Hanging rack for beef jerky |
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