1:2-chromium complex dyes for tanned leather

Details 1:2-chromium complex dyes for tanned leather 1:2-chromium complex dyes for tanned leather

1988-03-03

1989-04-11

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Leather dyeing

8436, 8641, 8680, 8685, 8686, 8687, 8692, 534696, 534697, 534698, 534699, 534701, 534716, 534723, 534724, D06P 332, C09B 4500

Patent

active

048203092

ABSTRACT:
Complexes of the formula ##STR1## wherein each R.sub.1 is independently (a) the radical of a coupling component of the active methylene non-cyclic or homocyclic series, (b) the radical of a coupling component of the heterocyclic series or (c) the radical of a coupling component of the monocyclic benzene series,

REFERENCES:
patent: 4150942 (1979-04-01), Holliger et al.
patent: 4358287 (1982-11-01), Wicki et al.
patent: 4623720 (1986-11-01), Holliger

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