EP 3425069 A1 20190109 - A DELIMING PROCESS
Title (en)
A DELIMING PROCESS
Title (de)
ENTKÄLKUNGSVERFAHREN
Title (fr)
PROCÉDÉ DE DÉCHAULAGE
Publication
Application
Priority
CN 2017092106 W 20170706
Abstract (en)
The present invention disclosed a deliming process, comprising a deliming step: deliming the limed pelt with a deliming agent which is free of ammonium and boric acid, the deliming agent comprising protein hydrolysate, the protein hydrolysate being produced according to a method comprising the following steps: (A) hydrolyzing hair, shavings, trimmings and/or feathers to generate amino acid and/or amino acid salt, then obtaining the protein hydrolysate. The present invention utilizes the waste from leather manufacturing as the raw material for deliming process, realizing recycling and significantly enhancing the concept of "closed loop" process and realizing a friendly and mild deliming process, which enables a clean pelt surface and soft handle feeling of the crust.
IPC 8 full level
C14C 1/08 (2006.01)
CPC (source: CN EP)
C14C 1/08 (2013.01 - CN EP)
Citation (search report)
- [A] DE 2113214 A1 19720928 - DIAMALT AG
- [A] US 3652381 A 19720328 - KREMR MILAN, et al
- [A] US 2009265861 A1 20091029 - HUANG HAI-GUANG [CN], et al
- [AD] DATABASE WPI Week 201148, Derwent World Patents Index; AN 2011-F40962, XP002786282
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3425069 A1 20190109; EP 3425069 B1 20200415; CN 109295265 A 20190201
DOCDB simple family (application)
EP 18181645 A 20180704; CN 201810736109 A 20180706