5-[4-(N-trifluoroethyl-amino)phenylazo]-pyrazolium dyestuffs

Details 5-[4-(N-trifluoroethyl-amino)phenylazo]-pyrazolium dyestuffs 5-[4-(N-trifluoroethyl-amino)phenylazo]-pyrazolium dyestuffs

1976-08-12

1978-09-26

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260147, 260163, 260558R, 260562R, 260573, 260577, C09B 2900, C09B 2908, D06P 104, D06P 110

Patent

active

041169549

ABSTRACT:
New cationic pyrazole dyestuffs are disclosed represented by the general formula: ##STR1## wherein one of the symbols R.sub.1 and R.sub.3 represents an alkyl group and the other a phenyl, chlorophenyl or methoxyphenyl group; R.sub.2 represents an alkyl group; R.sub.4 represents a hydrogen atom or an alkyl, hydroxyalkyl, halogenoalkyl, alkoxyalkyl or acylaminoalkyl group; X represents a hydrogen or chlorine atom; Y represents a hydrogen or halogen atom or a methyl, alkoxy or acetylamino group; and A.sup.- represents a monovalent anion. These pyrazole dyestuffs can be used for dyeing or printing of fibers based on polymers or copolymers of acrylonitrile and fibers based on polyamides or polyesters modified by acid groups.

REFERENCES:
patent: 2516303 (1950-07-01), Dickey
patent: 2618630 (1952-11-01), Dickey
patent: 3515715 (1970-06-01), Straley et al.
patent: 3948878 (1976-04-01), Coispeau

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