Process for isolating triarylmethane dyestuffs

Details Process for isolating triarylmethane dyestuffs Process for isolating triarylmethane dyestuffs

1978-05-24

1980-07-08

Garvin, Patrick

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260392, C09B 1110, C09B 1122

Patent

active

042117160

ABSTRACT:
Dyestuffs of the formula ##STR1## wherein R.sub.1 -R.sub.2 denote hydrogen, alkyl, halogenoalkyl, halogen, alkoxy, alkylmercapto, alkylsulfphonyl, alkoxysulphonyl, alkylcarbonyl, alkoxycarbonyl, nitro or cyano,

REFERENCES:
patent: 2181369 (1939-11-01), Frank
patent: 3422445 (1947-06-01), Stryker et al.
patent: 3652602 (1972-03-01), Schafer et al.
patent: 3686233 (1972-08-01), Gordon et al.

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