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EP 1029930 B1 20031105 - Process for tanning

Title (en)

Process for tanning

Title (de)

Gerbverfahren

Title (fr)

Procédé de tannage

Publication

EP 1029930 B1 20031105 (DE)

Application

EP 99125142 A 19991216

Priority

DE 19906190 A 19990215

Abstract (en)

[origin: EP1029930A1] In a process for tanning skins with a liquor containing a dialdehyde as tanning agent, the pH of the liquor is increased from 2.5-4.0 initially to 5.5 or more. An Independent claim is also included for a composition comprising a dialdehyde and optionally a modified dialdehyde for use in this process.

IPC 1-7

C14C 3/16; C14C 3/28

IPC 8 full level

C14C 3/16 (2006.01); C14C 3/28 (2006.01)

CPC (source: EP)

C14C 3/16 (2013.01)

Designated contracting state (EPC)

AT DE IT SE

DOCDB simple family (publication)

EP 1029930 A1 20000823; EP 1029930 B1 20031105; AT E253648 T1 20031115; DE 19906190 A1 20000817; DE 59907620 D1 20031211

DOCDB simple family (application)

EP 99125142 A 19991216; AT 99125142 T 19991216; DE 19906190 A 19990215; DE 59907620 T 19991216