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US 6,440,541 B1Granted
Top coat for metallic island coating system
AssigneeTextron Automotive Company Inc.
InventorsWilliam M. Humphrey, Adam Murano
Life of this patent
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Abstract
Described is a metallized article, and a method for making the same, comprising a substrate having a polyurethane basecoat disposed thereon and with a layer of electrically discrete metallic islands of a corrosion prone metal disposed on the basecoat. A cross-linked polyurethane top coat, which is bound to an organosilane, preferably an epoxy silane, is disposed on and encapsulates the discrete metallic islands. The organsilane is also bound to the metallic islands.
Claims21
A metallized article comprising:
- a substrate;
- a polyurethane basecoat disposed upon said substrate;
- a layer of electrically discrete metallic islands of a corrosion prone metal disposed upon the basecoat;
- a polyurethane topcoat disposed on and encapsulating the discrete metallic islands, the topcoat comprising an epoxy silane.
1 more element
A method for preparing a metallized article comprising the steps of:
- vacuum metallizing a substrate with a corrosion prone metal to produce a layer of discrete metallic islands on the substrate;
- forming an epoxy silane modified polyurethane top coat composition;
- applying the top coat composition to the vacuum metallized substrate to form a top coat layer;
- and
- curing the top coat layer, whereupon a urethane polymer is formed and the epoxy silane bonds to the urethane polymer and to the metallic islands.
2 more elements
Dependencies are inferred from the claim text.