Water-soluble amine-linked polymeric colorants
AssigneeDynapol
InventorsPatricia C. Wang, Robert E. Wingard
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Abstract
Polymeric colorants comprising a hydrocarbon backbone and attached directly thereto through amine linkages, at least one water-solubilizing group and at least one optically chromophoric group are disclosed. In a preferred embodiment, the backbone is a saturated aliphatic hydrocarbon, the chromophore is an anthraquinone chromophore and the solubilizing group is a sulfonate or sulfamate residue.
Claims3
A water-soluble polymeric coloring composition consisting essentially of ##STR107## randomly linked together through covalent carbon-carbon bonds into a polymer having a linear aliphatic hydrocarbon backbone, wherein n and m are integers such that the sum of n plus m is a value of from 20 to 3000, and n is from 0.2 to 4 times m;
- and wherein R.sub.1 is selected from the group consisting of hydrogen and lower saturated alkyls of from 1 to 4 carbon atoms inclusive and R.sub.2 is selected from the group consisting of hydrogen lower saturated alkyls of from 1 to 4 carbon atoms inclusive and aryls or alkaryls of from 6 to 8 carbon atoms inclusive.
Dependencies are inferred from the claim text.