Disazo 4,4'-diaminostilbene-2,2'-disulfonic acids dye

Details Disazo 4,4'-diaminostilbene-2,2'-disulfonic acids dye Disazo 4,4'-diaminostilbene-2,2'-disulfonic acids dye

1983-01-31

1986-09-16

Higel, Floyd D.

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

Organic compounds

Azo

534596, C09B 32215, C09B 5604, D06P 106, D06P 324

Patent

active

046123695

ABSTRACT:
Disazo dyes of the formula ##STR1## wherein the rings "a" either contain no further substituents and carry the azo group in the para-position to the .beta.-hydroxybutoxy group, or contain a C.sub.1 -C.sub.4 alkyl of C.sub.1 -C.sub.2 alkoxy radical in the para-position, and carry the azo group in the ortho-position, to the .beta.-hydroxybutoxy group. The dyes are specially suitable for dying and printing polyamide carpets. The dyes are distinguished by good solubility, good exhaustion and good fastness properties, including fastness to perspiration.

REFERENCES:
patent: 2286838 (1942-06-01), Seymour et al.
patent: 2863875 (1958-12-01), Bienert et al.
patent: 4008216 (1977-02-01), Sommer et al.
patent: 4055560 (1977-10-01), Dombchik

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