The method, the surface of an object to make permanently be wetted with water, and aluminum, if nsta end with a permanently be wetted with water with respect to the third surface

摘要

The surfaces of articles of manufacture fabricated from aluminum and other material which are not permanently water wettable are rendered permanently water wettable by coating the surface with a continuous film of the free acid form of an acidic film forming polymer which forms water soluble salts, said film containing a curing agent for the polymer; contacting the polymer film under aqueous conditions with colloidal alumina or a polyvalent metal sa curing the polymer to water insolubility; and, when required to render the cured film water wettable, hydrolyzing the surface portion only of the cured polymer.