Iron-complexed formazan dyes for polyamide and protein substrate

Details Iron-complexed formazan dyes for polyamide and protein substrate Iron-complexed formazan dyes for polyamide and protein substrate

1996-05-31

1997-10-14

Higel, Floyd D.

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

Organic compounds

Azo

534618, C09B 5610, C09B 62018, C09B 62038

Patent

active

056774346

ABSTRACT:
A family of 1:2 Fe-complexed formazan dyes is described. The dyes unexpectedly afford reddish-violet, violet, blue and black shades on natural and synthetic substrates. Methods for synthesizing the dyes and for dyeing a substrate are described. The dyes represent environmentally friendly alternatives to conventional Cr- and Co-based azo and formazan dyes.

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