| abstract |
PCT No. PCT/EP97/02392 Sec. 371 Date Nov. 18, 1998 Sec. 102(e) Date Nov. 18, 1998 PCT Filed May 9, 1997 PCT Pub. No. WO97/45491 PCT Pub. Date Dec. 4, 1997Pyridone dyes useful for thermal transfer and for dyeing or printing synthetic materials have the formula where X is CH or nitrogen, R1 is substituted or unsubstituted C1-C20-alkyl or substituted or unsubstituted phenyl, R2 is a carbocyclic or heterocyclic radical, R3 is hydrogen or C1-C4-alkyl, R4 is hydrogen or C1-C4-alkyl, R5 is substituted or unsubstituted C1-C8-alkyl or substituted or unsubstituted phenyl, and R6 is cyano, carbamoyl, carboxyl, C1-C4-alkoxycarbonyl or C1-C4-alkanoyl. |