Back to results
US 6,080,209 AGranted
Stable colorant compositions
AssigneeBASF SE
InventorsMatthias Wiesenfeldt, Johannes Peter Dix, Rudolf Paulus, Manfred Herrmann
Life of this patent
Estimating the term…
Abstract
Stable aqueous dye compositions containing at least one anionic colorant and at least one pigment and a polyanionic thickening agent. The dye compositions may be used to dye leather.
Claims9
A colorant composition, comprising:
- 8-40% by weight of at least one anionic dye selected from the group consisting of azo dyes, metal phthalocyanine dyes, and anthraquinone dyes substituted by at least one sulfonic acid group,
- 2-30% by weight of at least one pigment,
- 1-20% by weight of a polymeric polyanionic thickener, and
- 50-92% by weight of water or a predominantly aqueous diluent.
1 more element
A colorant composition, comprising:
- 8-18% by weight of at least one anionic dye selected from the group consisting of azo dyes, metal phthalocyanine dyes, and anthraquinone dyes substituted by at least one sulfonic acid group,
- 5-17% by weight of at least one pigment,
- 3-15% by weight of a polymeric polyanionic thickener, and
- 50-84% by weight of water or a predominantly aqueous diluent.
1 more element
Dependencies are inferred from the claim text.