- Nitrothiazolyl-monoazo-2,2,4-trimethyl-1,2,3,4-tetrahydroquinoline compounds for polyester
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A monoazo compound of the formula, STR1 wherein X is hydrogen atom or lower alkyl group; Z is hydrogen atom, halogen atom, alkyl group, acylamino group, benzoylamino group or alkylsulfonylamino group; R1, R2, R3 and R4 independently are hydrogen atom or alkyl group, provided that R1, R2, R3 and R4 cannot simultaneously be hydrogen atoms; and R5 is hydrogen atom, alkyl group, substituted alkyl group, alkenyl group, cycloalkyl group, aralkyl group or phenyl group.
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