EP 0291165 A1 19881117 - Tanning Agent.
Title (en)
Tanning Agent.
Title (de)
Gerbstoff.
Title (fr)
Agent de tannage.
Publication
Application
Priority
EP 87400962 A 19870424
Abstract (en)
A composition, suitable for use as a tanning agent in the preparation of leather, comprising a mixture of aluminium sulphate and a magnesium salt. The composition may also contain a titanium salt, optionally stabilised with a complexing agent, especially a poly(hydroxy)aliphatic-carboxylic acid. The composition may also contain or be used in conjunction with conventional mineral or vegetable tanning agents, such as chromium or zirconium salts. It may also be used with or contain an internal basifying agent, for control of pH during the tanning process, such as calcium carbonate or dolomite. The tanning agents may be used for the prepraation of pre-tanned ("wet-white" or "dry-white") or fully tanned leathers, especially in conjunction with small quantities of chrome tanning agents, and produce leathers having generally superior properties to conventionally tanned leathers. The invention also includes pre-tanning, tanning and re-tanning processes using the new tanning compositions and pre-tanned, tanned and re-tanned leathers arising from these processes.
IPC 1-7
IPC 8 full level
CPC (source: EP KR)
C14C 3/02 (2013.01 - KR); C14C 3/04 (2013.01 - EP); C14C 3/28 (2013.01 - EP)
Citation (search report)
- [X] US 1603169 A 19261012 - TULLIS JOHN K
- [X] BE 333358 A
- [AD] GB 2165859 A 19860423 - BRITISH LEATHER CONFEDERATION
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0291165 A1 19881117; AU 1508388 A 19881027; DK 221488 A 19881025; DK 221488 D0 19880422; FI 881894 A0 19880422; FI 881894 A 19881025; GB 8808436 D0 19880511; JP S63304100 A 19881212; KR 880012774 A 19881129; MA 21253 A1 19881231; NO 881764 D0 19880422; NO 881764 L 19881025; ZA 882877 B 19881024
DOCDB simple family (application)
EP 88303209 A 19880411; AU 1508388 A 19880422; DK 221488 A 19880422; FI 881894 A 19880422; GB 8808436 A 19880411; JP 9846288 A 19880422; KR 880004625 A 19880423; MA 21494 A 19880421; NO 881764 A 19880422; ZA 882877 A 19880422