Aqueous dispersions
AssigneeICI Americas Inc.
InventorsRichard G. Coogan, Raznik Vartan-Boghossian
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Abstract
An aqueous polymer dispersion containing a vinyl polymer and a nonionic water-dispersible polyurethane having pendent polyoxyethylene chains, the vinyl polymer having been formed by the free radical polymerization of at least one vinyl monomer in the presence of an aqueous dispersion of the polyurethane. The dispersions are useful as coating compositions.
Claims9
A non-gelled aqueous polymer dispersion containing a vinyl polymer and a nonionically-stabilised water-dispersible polyurethane having pendent polyoxyethylene chains, wherein the polyurethane is self-dispersible in water by virtue of said pendent nonionic polyoxyethylene chains, the vinyl polymer having been formed by the free radical polymerisation of at least one vinyl monomer in the presence of an aqueous dispersion of the polyurethane, and wherein further said at least one vinyl monomer includes a carboxylic acid functional monomer, and the weight ratio of polyurethane to vinyl polymer is within the range from 9:1 to 1:9.
Dependencies are inferred from the claim text.