Phenyl azo cyanothienyl azo anilino dyestuffs

Abstract

Abstract Disazo dyestuffs for polyester fibers represented by the following general formula: <IMAGE> wherein X represents a hydrogen atom, a chlorine atom, a trifluoromethyl group or a nitro group, Y represents a cyano group, a lower alkoxycarbonyl group or a lower alkoxyalkoxycarbonyl group, Z represents a hydrogen atom, a chlorine atom, a bromine atom, a methyl group or an acylamino group, R1 represents a hydrogen atom, a lower alkyl group, a cyanoalkyl group, a hydroxyalkyl group, a lower alkoxyalkyl group, a lower alkoxyalkoxyalkyl group, an aryloxyalkyl group, an acyloxyalkyl group, an alkenyloxyalkyl group, a lower alkoxycarbonylalkyl group, a lower alkoxyalkoxycarbonylalkyl group, a lower alkoxycarbonyloxyalkyl group, an alkenyl group or an aralkyl group, R2 represents a hydrogen atom, a hydroxyalkyl group, a lower alkoxyalkyl group, a lower alkoxyalkoxyalkyl group, an aryloxyalkyl group, an acyloxyalkyl group, an alkenyloxyalkyl group, a lower alkoxycarbonylalkyl group, a lower alkoxyalkoxycarbonylalkyl group, a lower alkoxycarbonyloxyalkyl group, an alkenyl group or an aralkyl group, and R3 represents a hydrogen atom, a methyl group, a chlorine atom or a methoxy group, but R2 may represent a lower alkyl group in case that Y represents a lower alkoxycarbonyl group, Z represents an acylamino group or R3 represents a methyl group. The dyestuffs dye polyester fibers in a brilliant reddish-blue or blue shade and have good fastness properties, excellent temperature stability and pH stability in dyeing.

Inventors

• 👤 Seiichi Imahori
• 👤 Kiyoshi Himeno
• 👤 Shuichi Maeda

Bibliographic Details