Disazo dyes which contain 2-hydroxynaphthyl moiety

Details Disazo dyes which contain 2-hydroxynaphthyl moiety Disazo dyes which contain 2-hydroxynaphthyl moiety

1992-12-10

1994-07-26

Mars, Howard T.

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

Organic compounds

Azo

534831, 534832, 534835, 534836, 534837, C09B 3102

Patent

active

053328060

ABSTRACT:
Azo dyes of the formula ##STR1## where A and B are each independently of the other substituted or unsubstituted phenyl or naphthyl and X is --N(R.sub.1)--SO.sub.2 --, --O--SO.sub.2 -- or --SO.sub.2 --N(R.sub.1)--, where R.sub.1 is hydrogen or C.sub.1 -C.sub.8 alkyl, produce very fast dyeings on nitrogen-containing or hydroxyl-containing fibre materials, paper or leather.

REFERENCES:
patent: 3034848 (1962-05-01), King
patent: 3615581 (1971-10-01), Kabitzke et al.
patent: 3623874 (1971-11-01), Froehlich
patent: 3634091 (1972-01-01), Loeffel et al.
patent: 3951944 (1976-04-01), Nickel et al.
patent: 3960831 (1976-06-01), Fuchs
Chem. Abstracts:PCA 72(2):4343y, "Disazo dyes for the silver bleach process". Kabitzke et al. (Belg. BE715411 Nov. 20, 1968) (1968).
CA 74(24):127563u (1970) Loeffel et al.
CA 73(8):36607z (1969) Froehlich.

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