Process for the bath pigmentation of leather

Details Process for the bath pigmentation of leather Process for the bath pigmentation of leather

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.

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