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Stable colorant compositions

  • US 6,080,209 A
  • Filed: 09/25/1998
  • Issued: 06/27/2000
  • Est. Priority Date: 03/26/1996
  • Status: Expired due to Fees
First Claim
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1. 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, and50-92% by weight of water or a predominantly aqueous diluent.

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