Solid polymeric colorant compositions
This invention relates to solid forms of polymeric colorants and the methods and processes for manufacturing the solid colorants. These solid polymeric colorants may be provided in the form of a free-flowing powder and may be useful for coloring solid pucks, tablets, powder detergents, soaps, fertilizers, personal care products, adhesives, sealants, thermoplastic polymers, thermosetting polymers, and the like.
1. 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.
2. The solid polymeric colorant composition of claim 1 , wherein the at least one solid absorbent material is selected from the group consisting of silica, clay, zeolite, urea formaldehyde polymers, and mixtures thereof.
3. The solid polymeric colorant composition of claim 1 , wherein the at least one solid absorbent material is selected from the group consisting of metal oxides, metal salts of alumino-silicate, expanded anhydrous sodium perborates, clays, diatomites, hydrotalcite, cross-linked porous synthetic polymeric materials, cross-linked modified starches, cross-linked acrylate polymers, metal organic framework (MOF) materials, hollow glass spheres, organic-inorganic mesoporous hybrid materials, and mixtures thereof.
4. The solid polymeric colorant composition of claim 1 , wherein the at least one processing additive is selected from the group consisting of fillers, anti-caking agents, flow enhancing agents, stabilizing agents, and mixtures thereof.
5. The solid polymeric colorant composition of claim 1 , wherein the composition further includes one or more additives selected from the group consisting of antifoaming agents, surfactants, pesticides, coloring agents, antifungal agents, antimicrobial agents, effervescents, slow release agents, coating agents, fragrances, perfumes, and soil release agents.
6. The solid polymeric colorant composition of claim 1 . wherein the composition is blended with at least one additional water soluble colorant.
7. A solid article comprising the solid polymeric colorant of claim 1 .
8. The solid article of claim 7 , wherein the solid article is selected from the group consisting of tablets, powders, granules, and mixtures thereof.
9. A liquid formulation comprising the solid polymeric colorant of claim 1 .