GB1272532A - Tanning process and material - Google Patents

Tanning process and material

Info

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
Application number
GB5390/70A
Inventor
Andre Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ugine Kuhlmann SA
Original Assignee
Ugine Kuhlmann SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ugine Kuhlmann SA filed Critical Ugine Kuhlmann SA
Publication of GB1272532A publication Critical patent/GB1272532A/en
Expired legal-status Critical Current

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.
GB5390/70A 1969-02-05 1970-02-04 Tanning process and material Expired GB1272532A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
ES376210A1 (en) 1972-03-16
BR7016573D0 (en) 1973-02-20
NL7001593A (en) 1970-08-07
BE745359A (en) 1970-07-16
US3690812A (en) 1972-09-12
FR2031725A5 (en) 1970-11-20
DE2004682A1 (en) 1970-11-19

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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