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US 5,856,014 AGranted
Aqueous coating composition for the manufacture of precoated metal
AssigneeNisshinbo Industries, Inc.
InventorsYasuo Imashiro, Ikuo Takahashi, Naofumi Horie, Takeshi Yamane
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Abstract
An aqueous coating composition for the manufacture of precoated metal is based on an aqueous resin having a carboxyl group in a molecule and neutralizable with a basic material as a binder, the aqueous resin being selected from an acrylic copolymer resin, polyester resin, and polyurethane resin. A mono- or poly-carbodiimide compound is blended with the aqueous resin. The composition forms a coating having improved chemical resistance, water resistance, and adhesion to sheet metal.
Claims4
A precoated aluminum or stainless steel that is prepared by
- coating said aluminum or stainless steel with an aqueous coating composition for the manufacture of precoated metal, comprising:
- an aqueous resin binder having a carboxyl group in a molecule and neutralizable with a basic material, wherein said aqueous resin is selected from the group consisting of an acrylic copolymer resin, polyester resin, and polyurethane resin;
- and
- a polycarbodiimide compound obtained by condensation reaction concomitant with decarboxylation of tetramethylxylylene diisocyanate;
- and curing said precoated aluminum or stainless steel.
2 more elements
Dependencies are inferred from the claim text.