Cationic azo dyes with a 1-hydroxynaphthalene 3-sulfonic acid co

Details Cationic azo dyes with a 1-hydroxynaphthalene 3-sulfonic acid co Cationic azo dyes with a 1-hydroxynaphthalene 3-sulfonic acid co

1988-09-27

1990-06-19

Higel, Floyd D.

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

Organic compounds

Azo

534798, 534804, 162162, 8536, 8684, 8919, C09B 4402, C09B 29033, D06P 141, D21H 380

Patent

active

049354990

ABSTRACT:
Paper is colored by a process in which a compound which, in the form of the free acid, is of the formula I ##STR1## where, in each case independently of one another, A is unsubstituted or methyl substituted C.sub.1 -C.sub.6 -alkylene or vinylene,

REFERENCES:
Rev Prog Coloration, vol. 14, 1984, Cationic Dyestuffs, pp. 187-203, Raue.

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