Coating composition with improved adhesion to friable surface
AssigneeRohm and Haas Company
InventorsMatthew Stewart Gebhard, Bradley Keith Hageman
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Abstract
An aqueous coating composition having improved adhesion to friable surfaces including an emulsion polymer of certain compositions and certain acid numbers having a glass transition temperature of −20 C to 100 C and an average particle diameter less than 120 nanometers; and 0.25-10%, by weight based on emulsion polymer weight, water-soluble alkoxylated amine is provided. In addition a method for for improving adhesion to friable surfaces by using the aqueous coating compositions of the invention is provided.
Claims5
An aqueous coating composition having improved adhesion to friable surfaces comprising an aqueous emulsion polymer having a glass transition temperature of −20° C. to 100° C. and an average particle diameter less than 120 nanometers, said emulsion polymer consisting essentially of at least one copolymerized ethylenically unsaturated nonionic monomer, each of said nonionic monomer(s) having a water solubility less than 8%, and at least one copolymerized acid monomer, such that the acid number of said emulsion polymer is 30 to 100;
- and 0.25-10%, by weight based on said emulsion polymer weight, water-soluble alkoxylated amine.
An aqueous coating composition having improved adhesion to friable surfaces comprising an aqueous emulsion polymer having a glass transition temperature of −20° C. to 100° C. and an average particle diameter less than 120 nanometers, said emulsion polymer consisting essentially of 8-99.5%, by weight based on said emulsion polymer weight, of at least one copolymerized ethylenically unsaturated first nonionic monomer, each of said first nonionic monomer(s) having a water solubility of 8% or more, 0-91.5%, by weight based on said emulsion polymer weight, of at least one copolymerized ethylenically unsaturated second nonionic monomer, each of said second nonionic monomer(s) having a water solubility of less than 8%, and at least one copolymerized acid monomer, such that the acid number of said emulsion polymer is 4 to 100;
- and 0.25-10%, by weight based on said emulsion polymer weight, water-soluble alkoxylated amine.
Dependencies are inferred from the claim text.