EP 1687453 A1 20060809 - A LIME-SULPHIDE FREE DEHAIRING AND FIBRE OPENING PROCESS
Title (en)
A LIME-SULPHIDE FREE DEHAIRING AND FIBRE OPENING PROCESS
Title (de)
EIN ÄSCHER- UND SULFIDFREIER ENTHAARUNGS- UND FASERÖFFNUNGSPROZESS
Title (fr)
PROCEDE DE D'EPILATION ET D'OUVERTURE DE FIBRES SANS SULFURE DE CHAUX
Publication
Application
Priority
IB 0305210 W 20031118
Abstract (en)
[origin: WO2005049871A1] The use of lime and sodium sulfide in leather making creates a lot of environmental concern. However, there is no commercial beam house process that could totally eliminate the use of lime and sodium sulfide. In this invention, a novel bio-chemical process has been standardized employing specific enzymes and non-toxic chemical that could totally eliminate the use of lime and sodium sulfide in leather processing. It has been found that the extent of hair removal and opening up of fibre bundles is comparable to that of the conventional limed leathers. Performance of the leathers is shown to be on par with conventional leathers. The process also enjoys reduction in chemical oxygen demand and total solid load compared to conventional process
IPC 8 full level
C14C 1/06 (2006.01)
CPC (source: EP)
C14C 1/065 (2013.01)
Citation (search report)
See references of WO 2005049871A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 2005049871 A1 20050602; AU 2003280066 A1 20050608; BR 0318609 A 20061017; CN 1878877 A 20061213; EP 1687453 A1 20060809
DOCDB simple family (application)
IB 0305210 W 20031118; AU 2003280066 A 20031118; BR 0318609 A 20031118; CN 200380110779 A 20031118; EP 03772457 A 20031118