Disperse azo dyestuffs

Details Disperse azo dyestuffs Disperse azo dyestuffs

2011-01-18

2011-01-18

Elhilo, Eisa B (Department: 1796)

Bleaching and dyeing; fluid treatment and chemical modification

Process of printing permanently on substrate, other than...

Discharge utilized

C008S662000, C008S690000, C008S691000, C534S788000

Reexamination Certificate

active

07871446

ABSTRACT:
A dyestuff of the formula (I)whereinD is a diazo component;R1is hydrogen, (C1-C4)-alkyl, hydroxy, —NHCOR6or —NHSO2R6;R2is hydrogen, halogen or (C1-C4)-alkoxy;R3is hydrogen or methyl;R4is hydrogen, (C1-C6)-alkyl, substituted (C1-C6)-alkyl, (C2-C6)-alkyl, which is interrupted by 1, 2 or 3 heteroatoms wherein said heteroatoms are —0—, —S— or —NR7, substituted (C2-C6)-alkyl, which is interrupted by 1, 2 or 3 heteroatoms wherein said heteroatoms are —0—, —S— or —NR7, (C2-C6)-alkenyl, substituted (C2-C6)-alkenyl, benzyl or phenethyl;R5is hydrogen or methyl;R6is (C1-C4)-alkyl, phenyl or substituted phenyl;R7is (C1-C4)-alkyl, phenyl or substituted phenyl;m is 0, 1 or 2; andn is 0 or 1. The invention further relates to use of the dyestuff and the process of making the dyestuff.

REFERENCES:
patent: 2466737 (1949-04-01), Quattlebaum et al.
patent: 5101021 (1992-03-01), Altermatt
patent: 5428138 (1995-06-01), Buehler et al.
patent: 5639282 (1997-06-01), Buehler
patent: 2004/0143108 (2004-07-01), Egli et al.
patent: WO 02/069002 (2002-09-01), None
patent: WO-02/081572 (2002-10-01), None
STIC Search Report dated Feb. 12, 2010.

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