Adhesion improvement with methylacrylate-chromium complexes and poly(vinyl alcohol)
AssigneeE. I. Du Pont de Nemours and Company
InventorJoseph Zen-Hwa Kwei
Life of this patent
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Abstract
A process for adhering hydrophilic surfaces and thermoset resin surfaces comprising coating the hydrophilic surface with an aqueous solution containing methylacrylato-chromium complex and poly(vinyl alcohol) is disclosed.
Claims7
An improved process for adhering hydrophilic surfaces and thermoset resin surfaces wherein the improvement comprises coating a hydrophilic surface selected from the group consisting of metal and polymeric surfaces with an aqueous solution containing a methacrylato-chromium complex and from about 1% to about 10% by weight of poly(vinyl alcohol) having a molecular weight of from about 5,000 to about 200,000 to provide a wet pick up of said solution of from about 0.9 to about 10.9 mg/cm.sup.2 prior to contacting said hydrophilic surface with the thermoset resin surface, and curing the thermoset resin surface and the solution in contact with both surfaces.
Dependencies are inferred from the claim text.