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US 2019/0169442 A1Published application
Aqueous coating composition and process of making the same
AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsCaifeng Wang, Jianming Xu, Yujiang Wang, Yunfei Lan
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Abstract
The present invention provides a novel aqueous coating composition comprising a multi-stage aqueous emulsion polymer, an anionic colloidal silica, and a thickener. This novel aqueous coating composition provides low gloss, while maintaining good physical stability and transparency.
Claims14
An aqueous coating composition comprising,
- (a) a multi-stage aqueous emulsion polymer comprising:
- from 20% to 80% by weight, based on dry weight of the multi-stage aqueous emulsion polymer, of a first polymer having an acid number of from 9 to 33, said first polymer having a calculated Mn of from 50,000 to 1,000,000;
- and from 80% to 20% by weight, based on dry weight of the multi-stage aqueous emulsion polymer, of a second polymer having an acid number from 0 to 7, said second polymer having a calculated Mn of from 50,000 to 1,000,000;
- (b) an anionic colloidal silica;
- and
- (c) a thickener.
3 more elements
A method for providing a coating comprising,
- (a) forming an aqueous coating composition comprising (1) a multi-stage aqueous emulsion polymer comprising:
- from 20% to 80% by weight, based on dry weight of the multi-stage aqueous emulsion polymer, of a first polymer having an acid number of from 9.81 to 32.7, said first polymer having a calculated Mn of from 50,000 to 1,000,000;
- and from 80% to 20% by weight, based on dry weight of said multi-stage aqueous emulsion polymer, of a second polymer having an acid number from 0 to 6.54, said second polymer having a calculated Mn of from 50,000 to 1,000,000;
- (2) an anionic colloidal silica;
- and (3) a thickener;
- (b) applying the aqueous coating composition to a substrate;
- and
- (c) drying, or allowing to dry, said applied aqueous coating composition.
5 more elements
Dependencies are inferred from the claim text.