DE50103652D1 - USE OF GALLIC ACID TO STABILIZE CHROME-III AGAINST OXIDATION IN CHROME TANED LEATHER - Google Patents

USE OF GALLIC ACID TO STABILIZE CHROME-III AGAINST OXIDATION IN CHROME TANED LEATHER

Info

Publication number
DE50103652D1
DE50103652D1 DE50103652T DE50103652T DE50103652D1 DE 50103652 D1 DE50103652 D1 DE 50103652D1 DE 50103652 T DE50103652 T DE 50103652T DE 50103652 T DE50103652 T DE 50103652T DE 50103652 D1 DE50103652 D1 DE 50103652D1
Authority
DE
Germany
Prior art keywords
chrome
leather
taned
stabilize
gallic acid
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
Application number
DE50103652T
Other languages
German (de)
Inventor
Ali Volkan Candar
Ivo Reetz
Yonca Zorluoglu
Herrero Juan Jose Palma
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.)
Cognis IP Management GmbH
Original Assignee
Cognis Deutschland GmbH and Co KG
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 Cognis Deutschland GmbH and Co KG filed Critical Cognis Deutschland GmbH and Co KG
Priority to DE50103652T priority Critical patent/DE50103652D1/en
Application granted granted Critical
Publication of DE50103652D1 publication Critical patent/DE50103652D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C14C3/28—Multi-step processes

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)
  • Fats And Perfumes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to the use of gallic acid which is suitable for stabilising chrome-III against oxidation in chrome-tanned leather.
DE50103652T 2000-06-28 2001-06-19 USE OF GALLIC ACID TO STABILIZE CHROME-III AGAINST OXIDATION IN CHROME TANED LEATHER Expired - Lifetime DE50103652D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE50103652T DE50103652D1 (en) 2000-06-28 2001-06-19 USE OF GALLIC ACID TO STABILIZE CHROME-III AGAINST OXIDATION IN CHROME TANED LEATHER

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10031548A DE10031548A1 (en) 2000-06-28 2000-06-28 Use of gallic acid to stabilize chromium III against oxidation in chrome-tanned leather
DE50103652T DE50103652D1 (en) 2000-06-28 2001-06-19 USE OF GALLIC ACID TO STABILIZE CHROME-III AGAINST OXIDATION IN CHROME TANED LEATHER
PCT/EP2001/006863 WO2002000941A1 (en) 2000-06-28 2001-06-19 Use of gallic acid for stabilising chrome-iii against oxidation in chrome-tanned leather

Publications (1)

Publication Number Publication Date
DE50103652D1 true DE50103652D1 (en) 2004-10-21

Family

ID=7647123

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10031548A Withdrawn DE10031548A1 (en) 2000-06-28 2000-06-28 Use of gallic acid to stabilize chromium III against oxidation in chrome-tanned leather
DE50103652T Expired - Lifetime DE50103652D1 (en) 2000-06-28 2001-06-19 USE OF GALLIC ACID TO STABILIZE CHROME-III AGAINST OXIDATION IN CHROME TANED LEATHER

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10031548A Withdrawn DE10031548A1 (en) 2000-06-28 2000-06-28 Use of gallic acid to stabilize chromium III against oxidation in chrome-tanned leather

Country Status (5)

Country Link
EP (1) EP1297188B1 (en)
AT (1) ATE276376T1 (en)
BR (1) BR0111931A (en)
DE (2) DE10031548A1 (en)
WO (1) WO2002000941A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10358686B2 (en) 2014-08-04 2019-07-23 Citizen Watch Co., Ltd. Leather or leather article and method for producing same, hexavalent chromium treatment agent, method for treating hexavalent chromium in crude leather or crude leather article
ES2887730T3 (en) * 2017-03-10 2021-12-27 Citizen Watch Co Ltd Powdered composition for the treatment of hexavalent chromium, compressed and method for producing leather

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935035A (en) * 1973-06-05 1976-01-27 Nippon Steel Corporation Aqueous solution and method for surface treatment of metals
DE19860610B4 (en) * 1998-12-29 2010-02-18 Schill + Seilacher Ag A method of inhibiting Cr (VI) formation in chrome-tanned leather and using antioxidants therefor

Also Published As

Publication number Publication date
EP1297188A1 (en) 2003-04-02
ATE276376T1 (en) 2004-10-15
EP1297188B1 (en) 2004-09-15
DE10031548A1 (en) 2002-01-10
BR0111931A (en) 2003-06-17
WO2002000941A1 (en) 2002-01-03

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: COGNIS DEUTSCHLAND GMBH & CO. KG, 40789 MONHEIM, D

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: COGNIS IP MANAGEMENT GMBH, 40589 DUESSELDORF, DE