| 摘要 |
Diaminopyridine dyes for dyeing cellulose-containing fibers, particularly cellulose fibers and polyester-cellulose fibers in from orange to bluish red, with excellent fastness to light. The dyes are represented by the formula (I): <IMAGE> (I) wherein <IMAGE> <IMAGE> <IMAGE> <IMAGE> +TR <IMAGE> X is a hydrogen atom, or a halogen atom; Y is an alkoxy group containing from 1 to 5 carbon atoms, -O-R10-O-R11, or a phenoxy group; and n is 2 or 3, and wherein R1 is a nitro group, a cyano group, a methylsulfonyl group, a phenylsulfonyl group, a mono- or di-lower alkylaminosulfonyl group, an acetyl group, or a benzoyl group; R2 and R3 are each a hydrogen atom, a trifluoromethyl group, a halogen atom, or a cyano group; R4 is a hydrogen atom, a lower alkyl group, a mono- or di-lower alkylaminosulfonyl group, a mono- or di-lower alkylcarbamoyl group, or an acetylamino group; R5 and R6 are each a hydrogen atom, a halogen atom, or a lower alkyl group; R7 is a lower alkyl group; R8 is a hydrogen atom or a halogen atom; R10 is an ethylene group, or a propylene group; and R11 is a methyl group, or an ethyl group.
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