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US 10,093,821 B2Granted
Aqueous coating composition and process of making the same
AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsJianming Xu, Yawei Xu, Baoqing Zheng
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Abstract
An aqueous coating composition capable of providing coating films with balanced properties of high hardness, high clarity, good water resistance, and good alcohol resistance; and a process of making such aqueous coating composition.
Claims14
An aqueous coating composition, comprising,
- (a) an aqueous emulsion polymer present in an amount of from 50 to 88% by weight based on total solids weight of the coating composition;
- (b) colloidal silica present in an amount of from 14 to 80%, by solids weight, based on the weight of the emulsion polymer;
- (c) an alkyl silane of Formula (I):
- wherein R1 is a saturated alkyl group with more than 4 carbon atoms;
- R2 is an alkoxy group with 1 to 3 carbon atoms, and n is an integer from 1 to 3;
- wherein the weight ratio of the alkyl silane to solids weight of the colloidal silica is from 0.11 to 0.23;
- and (d) water;
- wherein the content of volatile organic components in the coating composition is less than 150 g/L.
5 more elements
An aqueous coating composition comprising,
- (a) from 60 to 86.4% by weight, based on total solids weight of the coating composition, an acrylic emulsion copolymer comprising, as copolymerized units, at least one ethylenically unsaturated nonionic monomer and at least one ethylenically unsaturated monomer having a functional group selected from the group consisting of carbonyl, acetoacetate, alkoxysilane, carboxyl, ureido, amide, imide, amino group, and mixtures thereof;
- (b) from 17 to 42% by solids weight of colloidal silica, based on the weight of the emulsion polymer;
- (c) an alkyl silane of Formula (I):
- wherein R1 is a saturated alkyl group with 6 to 16 carbon atoms;
- R2 is an alkoxy group with 1 to 3 carbon atoms, and n is an integer from 1 to 3;
- wherein the weight ratio of the alkyl silane to solids weight of the colloidal silica is from 0.15 to 0.2;
- (d) water;
- (e) from 0.5 to 4.5% by weight of a coalescent, based on total solids weight of the coating composition;
- (f) from 0 to 4% by weight of a matting agent, based on total solids weight of the coating composition;
- and
- (g) from 0 to 1% by weight of a crosslinking agent, based on total solids weight of the coating composition;
- wherein the content of volatile organic components in the coating composition is less than 150 g/L.
9 more elements
Dependencies are inferred from the claim text.