Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Leather dyeing
Patent
1986-05-30
1988-01-05
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Leather dyeing
8404, 8446, 8602, 8650, 8652, D06P 304, D06P 332
Patent
active
047173890
ABSTRACT:
A hair-reserving penetration dyeing of the leather side of wool- or fur-bearing skins is obtained by dyeing the wooled or fur skins in aqueous medium with hydrosoluble sulpho-group-containing sulphur dyes (a) in the presence of dye-substantive uptake assistant (b) and of non-ionic and/or anionic hydrophilic dispersants (c) and optionally in the presence of leather fatting agents (d).
REFERENCES:
patent: 3273954 (1966-09-01), Wachsmann et al.
patent: 3334960 (1967-08-01), Abel
patent: 3472605 (1969-10-01), Wicki et al.
patent: 3926546 (1975-12-01), Nickel et al.
patent: 4272243 (1981-06-01), Lach et al.
Doyle Thomas C.
Lieberman Paul
Sandoz Ltd.
Sharkin Gerald D.
Skaling Linda D.
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