US 12,146,075 B2
Low VOC universal colorant compositions
Donald Diehl, Beecher, IL (US); Jacob S. Donlon, Chesterton, IN (US); Patricia L. Olofsson-Elkow, Frankfort, IL (US); Jean E. Shanks, Schererville, IN (US); and Sarah Arcella, Crown Point, IN (US)
Assigned to SWIMC LLC, Cleveland, OH (US)
Filed by SWIMC LLC, Cleveland, OH (US)
Filed on Jun. 22, 2023, as Appl. No. 18/339,545.
Claims priority of provisional application 63/366,787, filed on Jun. 22, 2022.
Prior Publication US 2023/0416542 A1, Dec. 28, 2023
Int. Cl. C09D 7/65 (2018.01); C09D 17/00 (2006.01)
CPC C09D 7/65 (2018.01) [C09D 17/001 (2013.01)] 21 Claims
 
1. A universal colorant composition comprising:
an aqueous vehicle,
one or more pigments or dyes,
and a modified polyether dispersant containing one or more pigment affinic groups;
wherein the polyether dispersant includes one or more polyoxyalkyl, substituted or unsubstituted polyoxyphenyl, polyetherketone, polyetheretherketone, cyclic ether, or combinations thereof, and
wherein the pigment affinic groups are each a saturated or unsaturated aliphatic or aromatic structural unit containing a plurality of carbon atoms;
wherein the modified polyether dispersant has a peak weight average molecular weight of at least 1000 g/mol;
wherein the universal colorant composition is substantially free of surfactants and dispersants other than the modified polyether dispersant;
wherein the universal colorant composition is compatible with water-borne and solvent-borne base paints and stains and is suitable for use in a point-of-sale tinting machine; and
wherein the colorant composition contains less than a film-forming amount of binder.