Triarylmethane dyes

Details Triarylmethane dyes Triarylmethane dyes

2005-01-25

2005-01-25

Davis, Brian J. (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S327000, C564S331000, C564S332000, C564S333000, C106S031130, C101S336000, C008S919000

Reexamination Certificate

active

06846956

ABSTRACT:
Described is a triarylmethane dye of the formula I where R1and R2are independently methyl, ethyl or hydroxyethyl, Q is substituted or unsubstituited phenyl or naphthyl and A⊖is the equivalent of an anion. It does not detach carcinogenic Michler's ketone.

REFERENCES:
patent: 3828071 (1974-08-01), Kast et al.
patent: 5347022 (1994-09-01), Gessner et al.
patent: 5792879 (1998-08-01), Gessner et al.
patent: 741 008 (1943-11-01), None
patent: 2729918 (1979-01-01), None
patent: 3301822 (1983-08-01), None
patent: 0 564 930 (1993-10-01), None
patent: 0 568 806 (1993-11-01), None
patent: 1 406 247 (1965-07-01), None
Database CAPLUS on STN, Acc. No. 1983:577495, NIWA et al., DE 3301822 (Aug. 4, 1983), (abstract).*
Database CAPLUS on STN, Acc. No. 1979:151783, Schmeidl et al., DE 2729918 (Jan. 18, 1979), (abstract).

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