1:2 metal complex dyes, their compositions, their production...

Details 1:2 metal complex dyes, their compositions, their production... 1:2 metal complex dyes, their compositions, their production...

2005-08-09

2005-08-09

Powers, Fiona T. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

C534S720000, C534S723000, C534S725000, C008S437000, C008S641000

Reexamination Certificate

active

06927284

ABSTRACT:
1:2-metal complex dyes of the formulawherein the symbols R1, R1′, R2, R2′, R3, R3′, Y, Z, n, n′, Me, M and (Kat)+are defined as in the Claims, mixtures thereof, their compositions, their production and their use as anionic dyes for dyeing substrates, especially leather, in brown to red shades.

REFERENCES:
patent: 2943085 (1960-06-01), Oesterlein
patent: 3782897 (1974-01-01), Dore
patent: 4663441 (1987-05-01), Grychtol
patent: 5008379 (1991-04-01), Holliger
patent: 5602237 (1997-02-01), Barra et al.
patent: 571 945 (1962-04-01), None
patent: 742 646 (1943-10-01), None
patent: 2 126 814 (1971-12-01), None
patent: 44 07 802 (1994-09-01), None
patent: 0 175 324 (1986-03-01), None
patent: 2002020659 (2002-01-01), None
Zdarsa et al., Chemical Abstracts 108:114200, 1988.
English abstract for DE 742 646.
English abstract for CS 239,463.
English abstract for DE 44 07 802.

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