Phthalimidyl azo dyes, process for the preparation thereof...

Details Phthalimidyl azo dyes, process for the preparation thereof... Phthalimidyl azo dyes, process for the preparation thereof...

2006-08-08

2006-08-08

Powers, Fiona T. (Department: 1626)

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

Organic compounds

Azo

C008S466000, C008S639000, C008S662000, C008S696000, C534S597000

Reexamination Certificate

active

07087731

ABSTRACT:
The present invention relates to dyes of formula wherein R1is hydrogen, methyl or —BHCO—C1–C4alkyl, R2is C1–C4alkyl, it being possible for the alkyl chain, from C2upwards, optionally to be interrupted by an oxygen atom, and R3has, independent of R2, any of the meanings of R2, and to the process for the preparation thereof and to the use thereof in dyeing or printing semi-synthetic and especially synthetic hydmophobic fiber materials, especially textile materials.

REFERENCES:
patent: 3980634 (1976-09-01), Weaver
patent: 5218095 (1993-06-01), Trottmann
patent: 6555664 (2003-04-01), Lauk et al.
patent: 0443984 (1991-08-01), None
patent: 00/40656 (2000-07-01), None

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