Process for the dyeing of leather with anionic dyes and polyamin

Details Process for the dyeing of leather with anionic dyes and polyamin Process for the dyeing of leather with anionic dyes and polyamin

1990-10-02

1991-12-24

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Leather dyeing

8437, 8554, 8602, 8527, D06P 332, D06P 152, C09B 6724

Patent

active

050748840

ABSTRACT:
To improve the affinity of anionic dyestuffs in the dyeing of leather materials, polycondensation products consisting of at least one amine of the formula ##STR1## in which the radicals have the meanings mentioned in the description with one dicarboxylic acid and, if desired, .omega.-aminocarboxylic acid or its lactam are highly suitable.

REFERENCES:
patent: 2913301 (1959-11-01), Streck
patent: 2913302 (1959-11-01), Streck
patent: 4857586 (1989-08-01), Bachem et al.
patent: 4875900 (1989-10-01), Singh et al.
patent: 4975499 (1990-12-01), Bachem et al.

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