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US 2004/0143108 A1Published application
Azo dyes
AssigneeClariant Finance (BVI) Limited
InventorsRobert Egli, Oliver Eich, Knut Goke
Life of this patent
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Abstract
The present invention relates to novel dyestuffs of formula (I) 1 wherein the substituents have the meanings defined in the claims, the production of such dyestuffs, the use of these dyestuffs and material dyed or printed by such dyestuffs.
Claims7
Dyestuff according to formula (1), wherein
- 12
- R1 signifies —CH3;
- —C2H5;
- allyl;
- benzyl;
- propargyl;
- —C2H4CN;
- C2H4OCO—C1-2-alkyl;
- —C1-3-alkylene-COO—C2H4—N-phthalimid or —C2H4—COO—R5,
- R2 signifies H, —CH3, —CH2CH3, —C2H4OCO—C1-2-alkyl or —C2H4—COO—R5,
- wherein
- R5 signifies C1-4-alkyl;
- C1-2-alkoxyethyl;
- allyl;
- benzyl;
- propargyl;
- phenoxyethyl or tetrahydrofurfuryl-2, and
- as well as mixtures thereof.
15 more elements
Dependencies are inferred from the claim text.