Water-insoluble azo dyestuffs

Details Water-insoluble azo dyestuffs Water-insoluble azo dyestuffs

1975-12-08

1977-11-01

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602071, 260556N, 260556A, C09B 4600, C09B 2900

Patent

active

040565238

ABSTRACT:
Novel azo dyestuffs -- being water-soluble only in traces -- containing in the coupling component the grouping of the formula ##STR1## in which R represents hydrogen, lower alkyl, lower alkylene-O-CO-lower-alkyl, lower alkylene-COO-lower alkyl, cyano-lower alkyl, chloro-lower alkyl, benzyl or cyclohexyl, R.sub.1 represents hydrogen, alkyl of from 3 to about 14 carbon atoms, cyanoethyl, hydroxyethyl, acetoxyethyl or benzyl, and R.sub.2 represents alkyl of from 3 to about 14 carbon atoms, benzyl, phenylethyl, cyclohexyl, phenyl, methylphenyl, ethylphenyl, methoxyphenyl, ethoxyphenyl, nitrophenyl, chlorophenyl or bromophenyl, or R.sub.1 and R.sub.2 together with the nitrogen atom morpholinyl or piperidyl, said dyestuffs being suitable for the dyeing or printing of synthetic fibrous materials, especially consisting of linear polyesters, the dyeings or prints obtained on said materials being distinguished particularly by an excellent fastness to thermofixation.

REFERENCES:
patent: 2193015 (1940-03-01), Weissberger
patent: 3206454 (1965-09-01), Merian et al.
patent: 3344133 (1967-09-01), Bossard et al.
patent: 3632582 (1972-01-01), Bil
patent: 3743678 (1973-07-01), Halasz
patent: 3929760 (1975-12-01), Landholm et al.

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