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US 7,892,295 B2Granted
1.3-thiazolyl azo dyes, their preparation and use
AssigneeDyStar Colours Deutschland GmbH
InventorHartwig Jordan
Life of this patent
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Abstract
A disperse dye of formula (I): Wherein R1 and R2 independently are each (C1-C4)-alkyl, OH or (C1-C4)-alkoxy-substituted (C1-C4)-alkyl; R3 and R4 independently are each hydrogen or methyl; one of A and B is cyano and the other is —COOX; and X is (C2-C12)-alkyl, O-interrupted (C2-C12)-alkyl, (C3-C4)-alkenyl or phenyl-(C1-C4)-alkyl. The invention also relates to the preparation of the dye and the use of the dye.
Claims7
A disperse dye of formula I
- wherein
- R1 and R2 independently are each (C1-C4)-alkyl or OH or (C1-C4)-alkoxy-substituted (C1-C4)-alkyl;
- R3 and R4 independently are each hydrogen or methyl;
- one of A and B is cyano and the other is —COOX;
- and
- X is (C2-C12)-alkyl, O-interrupted (C2-C12)-alkyl, (C3-C4)-alkenyl or phenyl-(C1-C4)-alkyl.
3 more elements
Dependencies are inferred from the claim text.