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US 2002/0164426 A1Published application
Method of adhering coatings to substrates
OwnerThomas James Ennis, William Harrison Hill +2inventors
InventorsThomas James Ennis, William Harrison Hill, William August Kirn, Joseph Martin Rokowski
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Abstract
Adhesion between a coating and a substrate may be improved by pre-treating the surface of the substrate with an aqueous detergent composition having a pH above 8 and comprising from 1 to 10% by weight phosphate and from 1 to 10% by weight silicate, before application of the coating.
Claims8
A method for improving the adhesion between a coating and a substrate, which method comprises:
- (A) selecting a substrate from the group consisting of aluminum, galvinized steel, vinyl, polyvinyl chloride, thermoplastic polyolefin, chlorosulfonated polyethylene, pressure treated wood, plywood and chalky acrylic coated surfaces thereof,
- (B) treating a surface of the substrate with an aqueous detergent composition;
- then
- (C) rinsing said surface of the substrate with water to remove said detergent composition;
- and then
- (D) applying a coating composition to said rinsed surface of the substrate,
- wherein said aqueous detergent composition has a pH greater than 8 and comprises from 1 to 10% by weight phosphate and from 1 to 10% by weight silicate.
4 more elements
Dependencies are inferred from the claim text.