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US 3,948,878 AGranted
Pyrazolium-azo-phenyl compounds
AssigneeProduits Chimiques Ugine Kuhlmann
InventorGerard Emile Edgard Coispeau
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AssigneeProduits Chimiques Ugine Kuhlmann
InventorGerard Emile Edgard Coispeau
Estimating the term…
Dyestuffs of the formula: ##SPC1## In which R.sub.1 represents a hydrogen atom or an alkyl or aryl group, R.sub.2 represents an alkyl group, R.sub.3 represents an aryl group when R.sub.1 is an alkyl group and an alkyl group when R.sub.1 is a hydrogen atom or an aryl group, R.sub.4 represents a hydrogen atom or an alkyl group, R.sub.5 represents an alkyl, hydroxyalkyl, cyanalkyl, acylaminoalkyl or alkanedioyliminoalkyl group, Y represents a hydrogen atom or an alkyl, alkoxy or acylamino group, Z represents a hydrogen atom or an alkoxy group and X represents a monovalent anion; process for the preparation of such dyestuffs which comprises treating a dyestuff of the formula: ##SPC2## In which R.sub.1, R.sub.4, R.sub.5, Y and Z have the same significance as above, R'.sub.3 represents a hydrogen atom if R.sub.1 is a hydrogen atom or an aryl group and R'.sub.3 represents an aryl atom if R.sub.1 is an alkyl group, with an alkylating agent; and the use of such dyestuffs for the colouration of fibres based on polymers or copolymers of acrylonitrile or fibres based on polyesters or polyamides modified by acid groups.
Dyestuff of the formula:
1,2-dimethyl-3-phenyl-4-chloro-5-(4-die thylamino-2-methylphenylazo)pyrazolium chloro-zincate.
1,2-dimethyl-3-phenyl-4-chloro-5-(4-diethylamino-phenylazo)-pyrazolium chlorozincate.
1,2-dimethyl -3-phenyl-4-chloro-5-(N-ethyl-N-cyano-ethyl-4-amino-2-methyl-phenylazo)-pyr azolium chlorozincate.
1,2-dimethyl-3-phen yl-4-chloro-5-(N-ethyl-N-succinimidoethyl-4-amino-2-methyl-phenylazo)-pyraz olium chlorozincate.
Dependencies are inferred from the claim text.