| 摘要 |
The present invention relates to new alpha -hydrazono alpha -phenyl acetonitriles, which can be used in particular as disperse dye-stuffs for the coloration of artificial or synthetic materials. They may be represented by the general formula: <IMAGE> (I) in which R1 represents a hydrogen or halogen atom or a nitro, trifluoromethyl, alkyl or alkoxy group, R2 represents a hydrogen or halogen atom or a cyano group, and the benzene nucleus A carries 1 to 3 identical or different substituents selected from halogen atoms and the trifluoromethyl, alkyl, alkoxy and -NR3R4 groups, R3 representing a possibly substituted alkyl group and R4 representing a hydrogen atom or a possibly substituted alkyl group. These compounds provide colorations which are very fast to light on polyester fibers.
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