GB1272532A - Tanning process and material - Google Patents
Tanning process and materialInfo
- Publication number
- GB1272532A GB1272532A GB5390/70A GB539070A GB1272532A GB 1272532 A GB1272532 A GB 1272532A GB 5390/70 A GB5390/70 A GB 5390/70A GB 539070 A GB539070 A GB 539070A GB 1272532 A GB1272532 A GB 1272532A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- parts
- chromium salt
- tanning
- feb
- 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)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
1,272,532. Tanning leather. UGINE KUHLMANN. Feb. 4, 1970 [Feb. 5, 1969], No. 5390/70. Heading C6C. In a process for the tanning of leather using at least one trivalent chromium salt, the chromium salt is mixed with a double carbonate of aluminium and an alkaline metal. Preferably, a double carbonate of aluminium and sodium is used, having a composition given by the following percentages by weight: Al 2 O 3 , 30 to 50 per cent; CO 2 , 10 to 25 per cent; Na 2 O, 10 to 20 per cent, and this composition is preferably modified by heat treatment, at temperatures in the range of 250-300‹C. for about two to three hours, to reduce the CO 2 content to between 0À4 and 2 per cent prior to mixing it with the chromium salt. In the example, 100 parts of the skin are pickled at pH 3À1 to 3À3 in 30 to 70 parts of an acid bath and are then treated with 10 to 15 parts of the mixture in aqueous solution.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6902541A FR2031725A5 (en) | 1969-02-05 | 1969-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1272532A true GB1272532A (en) | 1972-05-03 |
Family
ID=9028643
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5390/70A Expired GB1272532A (en) | 1969-02-05 | 1970-02-04 | Tanning process and material |
Country Status (7)
Country | Link |
---|---|
US (1) | US3690812A (en) |
BE (1) | BE745359A (en) |
BR (1) | BR7016573D0 (en) |
ES (1) | ES376210A1 (en) |
FR (1) | FR2031725A5 (en) |
GB (1) | GB1272532A (en) |
NL (1) | NL7001593A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4502859A (en) * | 1983-04-11 | 1985-03-05 | Rockmont Industries, Inc. | Hide tanning composition and method of preparing same |
GB8409266D0 (en) * | 1984-04-10 | 1984-05-23 | Alcan Int Ltd | Tanning of leather using aluminium compounds |
-
1969
- 1969-02-05 FR FR6902541A patent/FR2031725A5/fr not_active Expired
-
1970
- 1970-02-02 BE BE745359D patent/BE745359A/en unknown
- 1970-02-03 US US8431A patent/US3690812A/en not_active Expired - Lifetime
- 1970-02-04 GB GB5390/70A patent/GB1272532A/en not_active Expired
- 1970-02-04 BR BR216573/70A patent/BR7016573D0/en unknown
- 1970-02-04 ES ES376210A patent/ES376210A1/en not_active Expired
- 1970-02-04 NL NL7001593A patent/NL7001593A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
US3690812A (en) | 1972-09-12 |
NL7001593A (en) | 1970-08-07 |
BE745359A (en) | 1970-07-16 |
ES376210A1 (en) | 1972-03-16 |
DE2004682A1 (en) | 1970-11-19 |
BR7016573D0 (en) | 1973-02-20 |
FR2031725A5 (en) | 1970-11-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |