New disperse dyestuffs; their preparation and their applications to the coloration of synthetic materials

摘要

New disperse dyestuffs which may be used especially for the coloration of artificial or synthetic materials correspond to the general formula: <IMAGE> (I) in which R1 represents a hydrogen or halogen atom or a nitro, alkyl or alkoxy group and R2 represents a hydrogen or halogen atom or a cyano group. These dyestuffs provide colorations of very fast yellow to orange shades on polyester fibers.