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US 8,021,471 B2Granted
Modified colorants with aliphatic poly-acid groups
AssigneeCabot Corporation
InventorPaul S. Palumbo
Life of this patent
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Abstract
Modified colorants which can be pigments or dyes are described wherein the colorant has attached at least one aliphatic poly-acid group. Ink and inkjet ink compositions, formulations, and systems are further described, as well as methods of generating a printed image.
Claims19
A modified colorant comprising a colorant having attached at least one organic group, wherein said organic group includes:
- at least one C2-C20 aliphatic poly-acid group or a salt thereof, wherein said aliphatic poly-acid group comprises at least two carboxylic acid groups;
- and
- at least one aromatic group attached to said colorant and directly bonded to said at least one aliphatic poly-acid group.
Dependencies are inferred from the claim text.