GB191405863A - Improvements in and relating to Chrome Tanning Processes. - Google Patents
Improvements in and relating to Chrome Tanning Processes.Info
- Publication number
- GB191405863A GB191405863A GB191405863DA GB191405863A GB 191405863 A GB191405863 A GB 191405863A GB 191405863D A GB191405863D A GB 191405863DA GB 191405863 A GB191405863 A GB 191405863A
- Authority
- GB
- United Kingdom
- Prior art keywords
- skins
- acid
- aluminium
- hundred
- per cent
- 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
Links
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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
5863. Hirsch, F. March 8, 1913, [Convention date]. Chrome tanning. - In chrome tanning, the chromic acid or salts thereof are reduced by a solution of aluminium bisulphite, zinc bisulphite, or a mixture of the two without any further addition of an acid. As an example of carrying out the process, the skins are fulled for three and a half hours in a bath containing five per cent of potassium bichromate, two and a half per cent of muriatic acid, and one hundred and eighty per cent of water calculated on the weight of the true skin. Thereafter, the skins lie for twelve hours in a bath containing thirty-six litres of aluminium sulphite solution of 14‹ BÚ. and two hundred and twenty litres of water for one hundred kilos of skins. The skins are finally moved about in this bath for four hours. The Specification as open to inspection under Section 91 (3) (a) comprises also a process for restricting the retarding action which the zinc and aluminium bisulphites have upon the reduction of chromic acid bv the addition of acids or bisulphites of the alkaline earths or alkalies with acid. This subject-matter does not appear in the Specification as accepted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191407467D GB191407467A (en) | 1913-10-14 | 1914-03-24 | Novel Chrome Tanning Process. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT191405863X | 1913-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191405863A true GB191405863A (en) | 1915-06-03 |
Family
ID=32513173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191405863D Expired GB191405863A (en) | 1913-03-08 | 1914-03-07 | Improvements in and relating to Chrome Tanning Processes. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191405863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350619A (en) * | 2016-09-29 | 2017-01-25 | 天津科技大学 | Chrome-reduced combination tanning method of compound enzyme preparation after soaking |
-
1914
- 1914-03-07 GB GB191405863D patent/GB191405863A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350619A (en) * | 2016-09-29 | 2017-01-25 | 天津科技大学 | Chrome-reduced combination tanning method of compound enzyme preparation after soaking |
| CN106350619B (en) * | 2016-09-29 | 2019-04-09 | 天津科技大学 | The method of few chromium combination tanning after a kind of immersion of complex enzyme formulation |
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