Patent ID: 7875706

Claim:
A disperse dye of formula (Ia) where D 1 is 3-phenyl-1,2,4-thiadiazolyl or conforms to one of the following formulae: where (a) is hydrogen, chlorine, bromine, cyano, nitro-, C 1-4 -alkoxycarbonyl or C 1-3 -alkyl-sulphonyl, (b) is chlorine, bromine, nitro, methyl, C 1-2 -alkylsulphonyl, C 1-4 -alkylcarbonyl, aminosulphonyl, mono- or di-C 1-4 -alkylaminosulphonyl, phenylaminosulphonyl, C 1-4 -alkoxycarbonyl, benzyloxycarbonyl, tetrahydrofurfuryl-2-oxycarbonyl, C 3-4 -alkenyloxycarbonyl, C 3-4 -alkynyloxycarbonyl, aminocarbonyl, mono- or di-C 1-4 -alkylaminocarbonyl, phenylaminocarbonyl or phenylazo, (c) is hydrogen or chlorine or when (d) is hydrogen, (c) is hydroxyl or rhodan, (d) is hydrogen, chlorine, bromine, hydroxyl or cyano, (e) is nitro, C 1-4 -alkylcarbonyl, C 1-4 -alkoxycarbonyl, cyano, aminocarbonyl, or mono- or di-C 1-4 -alkylaminocarbonyl, (f) is hydrogen, chlorine, bromine, C 1-2 -alkyl or phenyl, (g) is nitro, cyano, formyl, dicyanovinyl or a group of the formula —CH═CH—NO 2 , —CH═C(CN)CO—OC 1-4 -alkyl, H 5 C 6 —N═N—or 3- or 4-NO 2 —C 6 H 4 —N═N—, (h) is cyano or C 1-4 -alkoxycarbonyl, (i) is C 1-4 -alkyl or phenyl, (j) is —CN, —CH═CH2 or phenyl, (k) is C 1-4 -alkyl, (l) is hydrogen, chlorine, bromine, cyano, rhodan, nitro, C 1-4 -alkoxycarbonyl or di-C 1-4 -alkylaminosulphonyl, (p) is hydrogen, chlorine or bromine, and (q) is C 1-4 -alkyl or C 1-4 -alkoxycarbonyl-C 1-4 -alkyl, wherein the phenyl nuclei of these substituents optionally have one or two substituents selected from the group consisting of chlorine, bromine, methyl and C 1-2 -alkoxy, R′ 1 is hydrogen, methyl, chlorine or acylamino, R′ 2 is hydrogen, chlorine, C 1-2 -alkoxy, C 1-2 -alkoxyethoxy or combines with R 3 to form a group of the formula —CH(CH 3 )CH 2 C(CH 3 ) 2 —, R 3 is hydrogen, C 1-6 -alkyl, C 3-4 -alkenyl, chloro- or bromo-C 3-4 -alkenyl, phenyl-C 1-3 -alkyl, C 1-4 -alkoxycarbonyl-C 1-3 -alkyl, C 3-4 -alkenyloxycarbonyl-C 1-3 -alkyl, C 3-4 -alkynyloxycarbonyl-C 1-3 -alkyl, phenoxy -C 2-4 -alkyl, halogen-, cyano-, C 1-4 -alkoxy-, C 1-4 -alkylcarbonyloxy- or C 1-4 -alkoxycarbonyloxy-substituted C 2-4 -alkyl, or a group of the formula —CH 2 —CH(R 8 )CH 2 —R 9 , wherein R 8 is hydroxyl or C 1-4 -alkylcarbonyloxy, R 9 is chlorine, C 1-4 -alkoxy, phenoxy, allyloxy or C 1-4 -alkylcarbonyloxy, R 5 is phenyl optionally substituted by one or two substituents selected from the group consisting of methyl, chlorine, bromine and nitro or combines with R 4 to form a c-pentanone or c-hexanone ring, wherein R 4 is hydrogen or C 1-2 -alkyl, and Y is a group of the formula —CH 2 CH 2 — or —CH 2 CH(CH 3 )—.