EP 1831405 B1 20090311 - COMPOSITION FOR THE TREATMENT OF LEATHER
Title (en)
COMPOSITION FOR THE TREATMENT OF LEATHER
Title (de)
ZUSAMMENSETZUNG ZUR BEHANDLUNG VON LEDER
Title (fr)
COMPOSITION POUR LE TRAITEMENT DU CUIR
Publication
Application
Priority
- EP 2005056875 W 20051216
- CH 20982004 A 20041217
Abstract (en)
[origin: WO2006064054A1] Process for the treatment of wetwhite, wetblue or vegetable pretanned leather, characterized in that - for the purpose of said treatment - a composition containing a) 1 - 95% by weight of a product of the reaction of a phenol and a sulphonating agent, the molar ratio (phenol):(SO3) being (1 ):(1.1-2.2), b) 1 - 95% by weight of a product of the reaction of a naphthalenesulphonic acid and formaldehyde, and c) 5 - 50% by weight c1) of a formaldehyde condensate of a dihydroxydiarylsulphonic acid with aryl- or (hydroxy)arylsulphonic acid and/or c2) of a urea/formaldehyde condensate of a phenol and phenolsulphonic acid, the sum of the components a), b), c1) and/or c2) being 100% by weight, is added in the form of an aqueous solution to the aqueous liquor, and, if adjusted to a concentration of 50%, is added to the liquor in an amount of 1 - 20% by weight, based on the shaved weight of the hides or skins as the substrate, is added to the liquor after the first tanning and before the subsequent treatment, which includes one or more of the steps retanning, dyeing and fatliquoring, and without a neutralizing step and without a liquor change; and the leathers obtained by this process or obtained using said composition.
IPC 8 full level
C14C 3/20 (2006.01); C07C 317/22 (2006.01); C14C 3/28 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006064054 A1 20060622; AR 055546 A1 20070822; AT E425269 T1 20090315; DE 602005013287 D1 20090423; EP 1831405 A1 20070912; EP 1831405 B1 20090311; TW 200641140 A 20061201
DOCDB simple family (application)
EP 2005056875 W 20051216; AR P050105309 A 20051216; AT 05850465 T 20051216; DE 602005013287 T 20051216; EP 05850465 A 20051216; TW 94144427 A 20051215