Composition and process for durably modifying surfaces of normally hydrophobic solid synthetic polymers and cured paints to facilitate spreading of aqueous liquids over the surfaces

摘要

Dispersions in water of polyvinyl alcohol (PVA), preferably those types resulting from about 90 mole % hydrolysis and/or ester interchange of polymers of vinyl carboxylates and having a molecular weight of about 155,000, are particularly effective for modifying the surfaces of plastic materials to cause water and/or other specified liquids to spread more readily over the treated surfaces than over the untreated surfaces. A biocide to repress the growth of micro-organisms in the dispersions is preferred.