D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
8/6
D06P 1/44 (2006.01) D06P 1/56 (2006.01) D06P 1/613 (2006.01) D06P 3/32 (2006.01)
Patent
CA 2023513
ABSTRACT OF THE DISCLOSURE: Process for the bath pigmentation of leather Process for the bath pigmentation of leather in which the leather is colored with very finely divided pigment dispersions in which the diameter of the pigment parti- cles is less than 100 nm. Those pigment dispersions which contain, as the dispersing agent, a compound of the formula (I) Image in which Ar is phenyl or naphthyl, X is -CH2-CH2- and/or -CH2-CH(CH3)-, 0 to (m-1) of the radicals A are hydrogen, 1 to m of the radicals A are benzoyl and/or naphthyl 1 to m of the radicals A are -CO-CH=CH-COOM and/or -CO- CH2-CH(SO3M)-COOM in which M is a cation, R1, R2 and R3 are hydrogen or alkyl having 1 to 14 carbon atoms, R is hydrogen and/or alkyl having 1 to 9 carbon atoms, n is a number from 1 to 150 and m is a number from 2 to 12, are excluded.
Armbrecht Norbert
Mast Jan-Hilbert
Schlosser Lothar
Schnaitmann Dieter
Winter Rainer
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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