Nippon Paint Compnay, Ltd.

Takeshi Takagi

Yoshitaka Okude

Shigeyuki Sasaki

Tadahiko Nishi

Yasuo Tanaka

Akira Fushimi

Tsuneyoshi Hisai

Hiroto Yoneda

Makoto Shimizu

A heat-curable, water-dispersible resin composition comprising 50 to 90% by weight of a film-forming polymer (A) obtained by copolymerizing an ethylenic monomer having a saturated C.sub.6 to C.sub.18 hydrocarbon group, a hydroxy-containing ethylenic monomer, an acidic group-containing ethylenic monomer and another ethylenic monomer, and 50 to 10% by weight of a hydroxy-terminated polyester resin (B), said resin (B) being grafted on said polymer (A) by transesterification, and at least part of the acidic groups in said polymer (A) being neutralized with a base (C); a method of producing said resin composition; a water-based paint composition comprising said resin composition and a curing agent; and a two-coat one-bake coating method which uses said paint composition as a base coat. This invention provides a water-based paint composition which shows good workability in a broad humidity condition range, and excellent in storage stability, paint film appearance and performance characteristics.

Method of coating using pigment-containing water-based paint composition

The present invention provides a curable resin composition having good curability and storage stability, which provides a cured film having excellent weather resistance, acid resistance and mar resistance. The curable resin composition comprises:

Coating of carboxyl-containing acrylic copolymer and epoxy-containing

A water-based thermosetting coating composition comprises a polyester resin having a number of pendant carboxyl groups and a crosslinker for the resin both dispersed in an aqueous medium containing a neutralizing base. The polyester resin contains as polyester-forming polyhydric alcohol reactants from 1 to 40% by weight of the entire polyester-forming reactants of a polyalkadienediol or a hydrogenated products thereof and from 2 to 50% by weight of the entire polyester-forming reactants of a 2,2-bis(hydroxymethyl)alkanoic acid. The coating composition is useful for forming a multilayer coating film on metallic substrates such as automobile bodies by applying the coating composition as an intermediate coating layer between an electrodeposition coating layer and a top coating layer.

Water-based coating compositions and coating method using the same

Coating composition process for forming cured film and coated article

Heat-curable, water-dispersible resin composition, production thereof,

The present invention provides a curable resin composition which provides cured film having not only excellent acid resistance but also good weather resistance, good mar resistance and seal cracking resistance because of its high extensibility. The curable resin composition comprises (a) 20 to 80% by weight of a polymer having carboxyl and carboxylate groups; and (b) 2% to 80% by weight of a polymer having hydroxyl and epoxy groups. The present invention also provides a process for forming a cured film using the resin composition.

Coating with carboxyl and carboxylate-containing polymer and hydroxyl

The present invention provides, a curable resin composition and a process for forming a cured film therefrom wherein the cured film has not only excellent acid resistance but also good weather resistance, good mar resistance and sealer cracking resistance because of its high extensibility, The curable resin composition comprises (a) 20 to 80% by weight of a polymer having carboxyl and carboxylate groups; and (b) 20 to 80% by weight of a polymer having hydroxyl and epoxy groups.

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Yawata, Japan

Takeshi Takagi