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US 10,519,325 B2Granted
Waterborne coating composition
AssigneeDow Global Technologies LLC
InventorsLoïc Chailloux, John Haigh, Debora Ressnig, Daniel Duc, Xavier Bricout
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Abstract
A waterborne coating composition including: an aqueous emulsion polymer having a copolymerized Phosphorous-acid monomer, an aqueous dispersion of cement, and a solid inert filler, each in certain amounts, is provided. A method for providing a coated substrate employing the waterborne coating composition that has been subsequently activated and the coated substrate so formed are also provided.
Claims9
A waterborne coating composition comprising:
- (a) an aqueous emulsion polymer, said emulsion polymer comprising, as copolymerized units from 0.1% to 10% Phosphorous-acid monomer, based on the dry weight of said emulsion polymer;
- said emulsion polymer in an amount of from 8% to 30% by weight on a dry basis;
- (b) an aqueous dispersion of cement, said aqueous dispersion having a cement solids content of from 50% to 80% by weight, said cement selected from the group consisting of aluminous cement, sulfoaluminous cement, and mixtures thereof, said cement in an amount of from 10% to 30% by weight on a dry basis;
- and
- (c) solid inert filler in an amount of from 40% to 82% by weight on a dry basis;
- wherein said emulsion polymer/said cement ratio is from 0.66 to 1.5 on a dry/dry basis;
- and wherein the water/said cement ratio is from 0.6 to 2.0 on a dry cement basis.
4 more elements
A method for providing a coated substrate comprising:
- (a) providing a solid substrate surface;
- (b) applying thereon an activated waterborne composition comprising (i) a waterborne coating composition comprising (aa) an aqueous emulsion polymer, said emulsion polymer comprising, as copolymerized units from 0.1% to 10% Phosphorous-acid monomer, based on the dry weight of said emulsion polymer;
- said emulsion polymer in an amount of from 8% to 30% by weight on a dry basis;
- (bb) an aqueous dispersion of cement, said aqueous dispersion having a cement solids content of from 50% to 80% by weight, said cement selected from the group consisting of aluminous cement, sulfoaluminous cement, and mixtures thereof, said cement in an amount of from 10% to 30% by weight on a dry basis;
- and
- (cc) solid inert filler in an amount of from 40% to 82% by weight on a dry basis;
- wherein said emulsion polymer/said cement ratio is from 0.66 to 1.5 on a dry/dry basis;
- and wherein water/said cement ratio is from 0.6 to 2.0 on a dry cement basis;
- wherein the pH of said waterborne coating composition has been adjusted to a pH>11;
- and (ii) an aqueous activator solution comprising from 0.4% to 0.8% of a metal salt selected from the group consisting of sodium, potassium, magnesium and calcium salts, by weight of metal based on dry weight of said cement;
- and
- (d) drying said activated waterborne coating composition.
9 more elements
Dependencies are inferred from the claim text.