Bleaching and dyeing; fluid treatment and chemical modification – Dye or potential dye composition – additive – treatment,... – Sulfur dye or vat dye
Patent
1996-10-30
1999-10-05
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Dye or potential dye composition, additive, treatment,...
Sulfur dye or vat dye
8585, 8604, 8607, 8608, 564 63, 568425, 568494, D06P 130, D06P 1651
Patent
active
059616709
ABSTRACT:
New sulfur dyes comprising in their preparation at least one sulfur dye intermediate of the formula I ##STR1## wherein R and R.sub.1 are independently nitro, nitroso or amino, are produced by including in their preparation at least one modifying agent selected from the group of: A) an aldehyde; B) urea; C) a benzoquinone or naphthoquinone; and D) monoethanolamine or by treating an already prepared sulfur dye involving such an intermediate in its preparation, with at least one aldehyde, benzoquinone or naphthoquinone or with monoethanolamine.
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Cote Philip N.
Domingo Manuel Jose
Lan Xiangfu
Shakhnovich Alex I.
Clariant Finance (BVI) Limited
Doyle Thomas C.
Einsmann Margaret
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