Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1997-01-17
1998-05-26
Gorgos, Kathryn L.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428416, 204488, 204501, C25D 1306
Patent
active
057562210
ABSTRACT:
The present invention provides a coating method which comprises applying, onto a material to be coated, a cationic electrodepositable coating composition comprising (A) a polyurethane-modified epoxy resin-amine adduct obtained by a reaction of (A-1) a polyurethane-compound having one terminal isocyanate group in the molecule, obtained by a reaction of (a) a polyhydroxy compound having a number-average molecular weight of 50-8,000, (b) a polyisocyanate compound, and (c) a compound having one active hydrogen atom in the molecule; (A-2) a bisphenol type epoxy resin having at least two epoxy groups in the molecule; and (A-3) an active-hydrogen-containing amine compound, and (B) a nonionic film-forming resin, the weight ratio of the resin (A)/the resin (B) being 15/85 to 95/5 and the coating composition comprising substantially no pigment, then heat-curing the formed electrocoating film; and thereafter applying, onto the cured electrocoating film, an aqueous coating composition comprising a metallic pigment and/or a coloring pigment and a high-solid-content coating composition comprising (C) a carboxyl group-containing compound, (D) a vinyl type polymer containing, in the molecule, an epoxy group, a hydroxyl group and a hydrolyzable alkoxysilyl group, (E) a reactive organopolysiloxane, and (F) crosslinked polymer fine particles but comprising substantially no pigment, by two-coat two-bake or by two-coat one-bake.
REFERENCES:
patent: 4981759 (1991-01-01), Nakatani et al.
patent: 5223495 (1993-06-01), Inoue et al.
patent: 5472998 (1995-12-01), Tessmer et al.
Database WPI, Section Ch, Week 8906, Derwent Publications Ltd., London, GB; Class A32, AN 89-044158 XP002030184 & JP 63 317 695A (Kansai Paint Co Ltd), Dec. 26, 1988.
Chemical Abstract 1997: 502724 (no month available).
Haneishi Hidehiko
Horibe Kyoichi
Mitsuji Masaru
Okumura Yasumasa
Yabuta Motoshi
Gorgos Kathryn L.
Kansai Paint Co. Ltd.
Mayekar Kishor
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