EP 1556522 A1 20050727 - METHOD FOR REMOVING HORN SUBSTANCES FROM ANIMAL SKIN
Title (en)
METHOD FOR REMOVING HORN SUBSTANCES FROM ANIMAL SKIN
Title (de)
VERFAHREN ZUR ENTFERNUNG VON HORNSUBSTANZEN AUS TIERHÄUTEN
Title (fr)
PROCEDE PERMETTANT D'ELIMINER LES SUBSTANCES DE CORNE DE LA PEAU DES ANIMAUX
Publication
Application
Priority
- DE 10249077 A 20021021
- DE 10319240 A 20030428
- EP 0311326 W 20031014
Abstract (en)
[origin: WO2004038046A1] The invention relates to a method for removing horn substances from animal skin. Said method is characterised in that animal skins are treated in an aqueous bath containing between 0.05 and 5 wt. % - in relation to the weight of the salt - of at least one compound of general formula I or the corresponding alkali metallic salts or alkaline-earth metallic salts thereof or ammonium or phosphonium salts, the variables having the following definitions: R1 is selected from hydrogen or C1-C12 alkyl, unsubstituted or substituted by at least one S-H group or one O-H group; X1 to X4 are the same or different and selected from hydrogen, C1-C4 alkyl, O-H, S-H or N-HR2; and R2 represents hydrogen or C1-C12 alkyl or a C1-C4-alkyl-C=O group, at least one X1 to X4 representing S-H. If R1 contains neither O-H nor S-H, at least one other X1 to X4 is selected from S-H, OH or NH-R2. Said aqueous bath also comprises at least one compound which catalyses the hydrolysis of peptide compounds.
IPC 1-7
IPC 8 full level
C14C 1/06 (2006.01)
CPC (source: EP US)
C14C 1/065 (2013.01 - EP US)
Citation (search report)
See references of WO 2004038046A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004038046 A1 20040506; AR 041659 A1 20050526; AU 2003273997 A1 20040513; EP 1556522 A1 20050727; US 2006037148 A1 20060223; US 2007143930 A1 20070628; US 7250062 B2 20070731
DOCDB simple family (application)
EP 0311326 W 20031014; AR P030103796 A 20031017; AU 2003273997 A 20031014; EP 03757967 A 20031014; US 53116705 A 20050411; US 68292407 A 20070307