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AssigneeColumbia Insurance Company
InventorsYue Chen, Navin Tilara, Jean Frederick Mauck, Shijun Yang, Yakov Freidzon, Robert J. Sheerin
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The present invention is directed to a coating composition comprising a vinyl acrylic copolymer latex wherein said copolymer latex has a water contact angle of about 60° or higher on the dried latex film surface, wherein said copolymer latex further has a specific water vapor permeability of about 0.5 mg/cm2/mm/24 hr. The invention is also directed to the copolymer latex itself. Further, the invention is a method of improving a coating's ability to withstand a high humidity environment comprising adding a vinyl acrylic copolymer latex to the coating composition wherein said copolymer latex has a water contact angle of about 60° or higher on the dried latex film surface, and wherein said copolymer latex further has a specific water vapor permeability of about 0.5 mg/cm2/mm/24 hr.
A coating composition comprising
A composition comprising a coating wherein the coating exhibits high hydrophobicity, measured as a water contact angle of about 85° or higher on the dried coating surface, and a specific water vapor permeability of about 0.85 mg/cm2/mm/24 hr or higher.
A latex comprising a vinyl acrylic copolymer latex having a water contact angle of about 60° or higher on the dried latex film surface and having a specific water vapor permeability of about 0.5 mg/cm2/mm/24 hr.
A method of improving a coating composition's ability to withstand a high humidity environment comprising adding a vinyl acrylic copolymer latex to the coating composition wherein said copolymer latex has a water contact angle of about 60° or higher on the dried latex film surface, and wherein said copolymer latex further has a specific water vapor permeability of about 0.5 mg/cm2/mm/24 hr.
Dependencies are inferred from the claim text.