Patent ID: 9139676
Filing Date: 2015-09-22
Classification: C08F,C08K,C08L,C09D

Abstract:
1. A colorant composition suitable as a precursor to an aqueous latex paint or other water-borne coating, which colorant composition comprises at least one pigment, water, and a copolymer surfactant having a number average molecular weight of from about 400 Daltons to about 200,000 Daltons, which colorant composition is not itself an aqueous latex paint or other water-borne coating, and wherein the copolymer surfactant comprising moieties corresponding to the following monomers (a) from about 10% to about 80% by weight of at least one C (b) from about 10% to about 80% by weight of at least one C (c) from about 0.01% to about 20% by weight of at least one surfactant monomer, wherein each said surfactant monomer is either an acrylic or methacrylic ester moiety joined with a hydrophobic moiety which is a styrylphenyl moiety by a bridging group comprising a poly(ethyleneoxy) moiety, said colorant composition being capable of mitigating any change in the Stormer low-shear viscosity of an aqueous latex paint or other water-borne coating formed of a mixture comprising the colorant composition and a tint base, such that said Stormer low-shear viscosity of said paint or other coating is not substantially changed compared with, its formation by mixing of the colorant composition with the tint base notwithstanding, being within about ±10% of the Stormer low-shear viscosity of the tint base.