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US 9,850,396 B2Granted
Aqueous coating composition
AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsYawei Xu, Fu Zhan, Xiaohong Yang, Baoqing Zheng, Biao Shen, Yurun Yang
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Abstract
An aqueous coating composition capable of providing coating films with balanced properties of low gloss, high clarity, and good water resistance and alcohol resistance, and a process of making and using such aqueous coating composition.
Claims15
An aqueous coating composition comprising, based on the total weight of the coating composition,
- (a) 1-40 wt % of a polymer binder,
- (b) 0.5-2 wt % of a first matting agent having a specific surface area larger than 100 square meters per gram according to ASTM D1993-03(2008) method,
- (c) 1-6 wt % of a second matting agent having a specific surface area smaller than 5 square meters per gram according to ASTM D1993-03(2008) method,
- (d) 0.1-1 wt % of an epoxy silane, and
- (e) 0.5-6 wt % of a wax.
2 more elements
An aqueous coating composition comprising, based on the total weight of the coating composition,
- (a) 12-35 wt % of an acrylic copolymer comprising a copolymerized ethylenically unsaturated monomer having a functional group selected from carbonyl, acetoacetate, alkoxysilane, carboxyl, ureido, amide, imide, amino group, or mixtures thereof;
- (b) 0.8-1.2 wt. % of a first matting agent selected from silica, polyurea, or mixtures thereof,
- (c) 2-5 wt % of a second matting agent selected from a polyacrylate matting agent, a polyethylene matting agent, a polytetrafluoroethene matting agent, or mixtures thereof;
- (d) 0.2-0.4 wt % of an epoxy silane selected from an epoxy silane oligomer, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, beta-(3,4-epoxycyclohexyl)ethyltriethoxysilane, or a mixture thereof;
- (e) 1-3 wt % of a wax comprising paraffin wax, polyethylene wax, or mixtures thereof;
- wherein the wax has an average particle size of no more than 1.4 microns according to ASTM E2651-10 method;
- (f) 40-70 wt % water;
- (g) 0-8 wt % solvent;
- and
- (h) 0-1 wt % a crosslinking agent.
7 more elements
Dependencies are inferred from the claim text.