Coated metal fastener and coating composition therefor
AssigneeIllinois Tool Works Inc.
InventorsWilliam L. Gabriel, Geronimo E. Lat, Lawrence S. Shelton
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Abstract
A coated metal fastener and a coating composition that has particular affinity for plaster materials and the like is disclosed. The composition that is applied to the fastener contains a copolymer of styrene and maleic anhydride and a thermoplastic resin, preferably polyvinyl acetate, in an inert organic solvent. The organic solvent can be an aromatic solvent, a ketone, a chlorohydrocarbon, or a mixture thereof. The composition is applied to the fastener by conventional methods and cured thereon at about ambient temperature.
Claims22
A coating composition for metal fasteners comprising:
- a copolymer of an aromatic monomer and a monomer with .alpha.,.beta. unsaturation with carboxyl groups, said .alpha.,.beta. unsaturated monomer selected from the group consisting of maleic acid, fumaric acid and maleic anhydride;
- a thermoplastic synthetic resin adhesive;
- and an inert organic solvent selected from the group consisting of aromatic solvents, ketones, chlorohydrocarbons, and mixtures thereof.
A metal fastener that adheres to plaster with a polymeric coating, comprising:
- a copolymer of an aromatic monomer and a monomer with .alpha.,.beta. unsaturation with carboxyl groups, said .alpha.,.beta. unsaturated monomer being selected from the group consisting of maleic acid, maleic anhydride, and fumaric acid and a thermoplastic resin over substantially its entire metal surface and contiguous therewith.
Dependencies are inferred from the claim text.