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US 2011/0217472 A1Published application
Method for Refinishing A Vehicle Using a Multi-Layer Coating System Including a Hydroxyl Modified Polyurethane Dispersion Binder
AssigneeThe Sherwin-Williams Company
InventorJohn M. Rouge
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Abstract
A method for refinishing a vehicle using a multi-layer coating system is provided. The multi-layer coating system comprises a hydroxyl-functional polyurethane dispersion. The hydroxyl-functional polyurethane comprises the reaction product of a pre-polymer intermediate formed from the reaction of an isocyanate with an active hydrogen containing compound, such as a polyester polyol, with a compound having at least two amine groups and one hydroxyl group, such as a diamino alcohol.
Claims10
A method for refinishing a vehicle comprising:
- (1) applying a primer coat to the vehicle surface;
- (2) applying a basecoat over the primer coat, wherein the basecoat comprises a polyurethane dispersion and at least one pigment, wherein the polyurethane dispersion comprises the reaction product of:
- (a) a hydroxyl-functional polyurethane resin comprising the reaction product of
- (i) an isocyanate pre-polymer intermediate, which comprises the reaction product of an isocyanate and a compound comprising at least one active hydrogen and
- (ii) a chain extender compound comprising at least two primary amine groups and one hydroxyl group;
- wherein the hydroxyl-functional polyurethane resin is substantially free of terminal hydroxyl groups;
- and
- (b) water;
- and
- (3) applying a clear coat over the applied basecoat.
7 more elements
Dependencies are inferred from the claim text.