Patent ID: 8535392

Claim:
A solid polymeric colorant composition comprising: a) from about 10% to about 95% by weight of at least one water soluble polymeric colorant having the following formula: R{A[(alkyleneoxy constituent) n R 1 ] m } x wherein R is an organic chromophore group; A is a linking moiety in said organic chromophore group selected from the group consisting of N, O, S or CO 2 ; the alkylene moiety of the alkyleneoxy constituent contains from 2 to about 4 carbon atoms; n is an integer of from 2 to about 230; m is 1 when A is O, S, CO 2 and 1 or 2 when A is N; x is an integer of from 1 to 5; and the product of n times x times m (n·m·x) is from 2 to about 230; and R 1 is a member of the group consisting of and sulfonates and sulfates of each of the members of said group, wherein R 2 is H, an alkyl radical containing up to about 20 atoms or carboxy-terminated alkyl radical containing up to about 20 carbon atoms, j and k are OH, OM or OR 3 wherein M is a cation moiety of an alkali metal, an alkaline earth metal, a transition metal, or ammonium, and R 3 is an alkyl radical containing up to about 20 carbon atoms; and wherein said water soluble polymeric colorant has a solids content of at least about 60%; and b) from about 5% to about 90% by weight of at least one solid absorbent material; and c) from about 0% to about 20% of at least one processing additive; wherein said solid polymeric colorant is a free-flowing powder.