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US 6,241,789 B1Granted
Process for dyeing or printing and novel reactive dyes
AssigneeCiba Specialty Chemicals Corporation
InventorsPeter Scheibli, Peter Aeschilmann, Urs Lehmann, Marcel Frick
Life of this patent
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Abstract
Process for dyeing or printing paper, films of plastic or fibre material containing hydroxyl groups or containing nitrogen with reactive dyes, which comprises using at least one reactive dye of the formula (1) from the following group a) and at least one reactive dye from the following groups b), c) and d): a) green- or blue-dyeing reactive dyes of the formula (1) b) blue-dyeing reactive dyes of the formula (2) or (3) c) red-dyeing reactive dyes of the formula (4) d) yellow- or orange-dyeing reactive dyes of the formula (5)
Claims4
A reactive dye of the formula
- in which
- R6 is hydrogen or C1-C4alkyl which is unsubstituted or substituted by hydroxyl, sulfo or sulfato,
- R7 is sulfo,
- R8 is hydrogen,
- X3 is fluorine and
- Y2 is hydrogen, C1-C8alkyl which is unsubstituted or substituted by hydroxyl, sulfo or sulfato and is uninterrupted or interrupted by oxygen, or the radical —N(R6)—Y2 is morpholino.
3 more elements
Dependencies are inferred from the claim text.