| 摘要 |
Disclosed are disperse dyes for the dyeing of synthetic fibers such as cellulose acetate, triacetate, polyamide, and especially polyester and its blends, which have the general formula <IMAGE> in which R1 is selected from hydrogen, aryl, cyclohexyl, lower alkyl and lower alkyl substituted by Cl, CN, OC2H4OC2H5, <IMAGE> lower alkoxy, aryl, NHCONHPh, OCONHPh, phthalimido, succinimido, or aryloxy, which aryloxy may be substituted by one or more of Cl, Br, NO2, CN, lower alkyl, lower alkoxy, aryl and aryloxy; R2 is phenyl or phenyl substituted with 1-3 of lower alkyl, lower alkoxy, <IMAGE> -CN, -Cl or -NO2; R3 is H, Cl, lower alkyl or lower alkoxy; R1 and R3 may form a 5 or 6 membered ring preferably substituted by 1-3 methyl groups; R4 is H, Cl, lower alkyl or lower alkoxy; R5 is selected from 3-pyridyl, 3-benzisothiazolyl, 2-benzothiazolyl, 2-benzoxazolyl, 2-quinoxalyl, 2-quinazolinonyl, 2-1,3,4-oxadiazolyl, 2-1,3,4-thiadiazolyl and 2-thienyl, which R5 heterocycles may be substituted by Cl, Br, NO2, CN, aryl, aryl substituted by Cl, Br, NO2 or CN, lower alkyl or COOR6 wherein R6 is lower alkyl or aryl; and n is 1-4.
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