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US 4,308,205 AGranted
Water-soluble monoazo cationic dyestuffs derived from 1-phenyl-3-aminopyrazoles
AssigneeMontedison S.p.A.
InventorsRuggero Battisti, Nicola Mazzaferro, Giovanni Bausani
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Abstract
A new class of water-soluble monoazo cationic dyestuffs free from sulphonic or carboxylic acid groups is disclosed. A process for preparing the new dyestuffs, which are derived from 1-phenyl-3-aminopyrazoles, is also disclosed.
Claims1
Water-soluble monoazo cationic dyestuffs, free from sulphonic or carboxylic acid groups, and having the general formula:
- ##STR18## wherein:
- R is H;
- R.sub.1 is alkyl, hydroxyalkyl, alkoxyalkyl, acyloxyalkyl or cyanoalkyl, having on the aggregate up to 7 carbon atoms;
- R.sub.2 is alkyl, hydroxyalkyl, alkoxyalkyl, acyloxyalkyl or cyanoalkyl, having on the aggregate up to 7 carbon atoms, or aralkyl;
- R.sub.3 is CH.sub.3 or C.sub.2 H.sub.5 ;
- Y is H, alkyl having up to 4 carbon atoms, a halogen, or an acylamino group;
- Z is H, or alkoxyl having up to 4 carbon atoms;
- A is H, halogen, alkyl or alkoxyl having up to 4 carbon atoms, or CF.sub.3 ;
- n is 1 or 2;
- and
- X is a monovalent anion.
8 more elements
Dependencies are inferred from the claim text.