EP 0994195 A2 20000419 - Process for waterproofing chromium tanned bovine hides
Title (en)
Process for waterproofing chromium tanned bovine hides
Title (de)
Verfahren um chromgegerbte Rinderhäute wasserbeständig zu machen
Title (fr)
Procédé pour rendre des peaux bovines tannées au chrome résistantes à l'eau
Publication
Application
Priority
PT 10221198 A 19981014
Abstract (en)
The present invention regards a process for making hides waterproof and water repellent, comprising: a first washing step in a solution of water and formic acid; a step for freeing the hides from acid in a solution of water, sodium formate, neutrigan, DENSODRIN LD 6359 and DENSODRIN CD; a re-tanning and greasing step in a solution of water, powdered mimosa tannin, powedered Basyntan SL, Lipoderm Licker SLW, DENSODRIN LD 6359 and DENSODRIN CD and formic acid; a dyeing step in cold water and dye and, finally, a fixing step in water and Chromitan MSN. The use of a suitable proportion of these compounds permits to make the hides waterproof and water repellent, without, however, altering the hide surface, which then can undergo subsequent finishing treatments.
IPC 1-7
IPC 8 full level
CPC (source: EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0994195 A2 20000419; EP 0994195 A3 20011004; JP 2000119700 A 20000425; PT 102211 A 20000428; PT 102211 B 20031031
DOCDB simple family (application)
EP 99118746 A 19990923; JP 29195499 A 19991014; PT 10221198 A 19981014