Graffiti-resistant barriers, related compositions and methods24m
AssigneeFoster S. Becker
InventorsFoster S. Becker, Bruce R. Maier
Life of this patent
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Abstract
A composition useful for preparation of a graffiti-resistant barrier coating, related methods and compositions. The composition comprises from about 0.1 to about 30 percent by weight polyvinyl alcohol of molecular weight from about 7,000 to about 120,000 and being at least about 50% hydrolyzed; from about 0.1 to about 30 percent by weight non-stick agent such as silicone or polytetrafluoroethylene; and from about 0.1 to about 40 percent by weight adhesion promoter such as a urethane composition.
Claims22
A method for coating a substrate with a graffiti-resistant barrier, comprising applying to the substrate a composition comprising
- (a) from about 0.1 to about 30 percent by weight polyvinyl alcohol of molecular weight from about 7,000 to about 120,000 and being at least about 50% hydrolyzed;
- (b) from about 0.1 to about 30 percent by weight non-stick agent selected from the group consisting of silicone, polytetrafluoroethylene and mixtures thereof;
- (c) from about 0.1 to about 40 percent by weight adhesion promoter comprising (i) a mixture of urethane and a cross-linked acrylic urethane or (ii) if the composition is non-aqueous, either such mixture or a polyester;
- and
- (d) a solvent;
- and allowing the composition to dry.
Dependencies are inferred from the claim text.