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US 4,439,207 AGranted
Stable disperse dye compositions comprising at least two monoazo dyes
AssigneeSandoz Ltd.
InventorsRuedi Altermatt, Hans Jakob
Life of this patent
Estimating the term…
Abstract
Disperse dye compositions comprising (a) 20 to 55% by weight of a dye of the formula ##STR1## wherein each R.sub.1 is independently halogen, (b) 5 to 40% by weight of at least one dye of the formula ##STR2## wherein R.sub.1 is halo, and R.sub.2 is hydrogen, (C.sub.1-4 alkyl)carbonyl or benzoyl; and (c) 30 to 60% by weight of one or more dispersing agents and any other additives that may be present. Components (a), (b) and (c) forming 100% dry weight of the composition.
Claims20
A disperse dye composition comprising
- (a) 20-55% by weight of a dye of the formula ##STR13## wherein each R.sub.1 is independently halo, (b) 5-40% by weight of at least one dye of the formula ##STR14## wherein R.sub.1 is halo, and R.sub.2 is hydrogen, (C.sub.1-4 alkyl)carbonyl or benzoyl, and
- (c) 30-60% by weight of (i) a dispersing agent, (ii) a mixture of dispersing agents, (iii) a mixture of at least one dispersing agent and at least one other additive or dye or (iv) a mixture of at least one dispersing agent, at least one other additive and at least one other dye,
- with the proviso that Components (a), (b) and (c) together constitute 100% of the dry weight of the composition.
Dependencies are inferred from the claim text.