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US 12,331,196 B2Granted
Aqueous dispersion of polymeric particles
AssigneesRohm and Haas Company, Dow Global Technologies LLC
InventorsYuehan Hu, Yan Li, Zhi Juan Gong, James C. Bohling, Ling Li
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Abstract
An aqueous dispersion of polymeric particles comprising a specific emulsion polymer and a hydroxyl-terminated polysiloxane, and an aqueous coating composition comprising the aqueous dispersion providing coatings made therefrom with improved water resistance, anti-corrosion, and water repellency properties.
Claims20
An aqueous dispersion of polymeric particles in an aqueous medium wherein the polymeric particles comprise an emulsion polymer and have a hydroxyl-terminated polysiloxane with the polymeric particles,
- wherein the emulsion polymer comprises, by weight based on the weight of the emulsion polymer, more than 0.5% to 1.8% of structural units of a phosphoalkyl(meth)acrylate, a salt thereof, or mixtures thereof;
- and
- from zero to 5.0% of structural units of an ethylenically unsaturated functional monomer carrying at least one functional group selected from an amide, carboxyl, carboxylic anhydride, sulfonic acid, sulfonate, sulfuric acid, or sulfate group;
- wherein the hydroxyl-terminated polysiloxane with the polymeric particles is present in an amount of from 0.1% to 10%, by weight based on the weight of the emulsion polymer.
1 more element
Dependencies are inferred from the claim text.