Kansai Paint Company, Ltd.

Motoshi Yabuta

Yoshiyuki Yukawa

Yasushi Nakao

Yasumasa Okumura

Akimasa Nakahata

Masaaki Saika

Hiroshi Igarashi

Satoshi Ikushima

Mitsuhiro Fukuda

Haruhiko Aida

Seiji Wada

Yuzo Miyamoto

Ken-ichi Hasada

Koji Yamada

Shinji Sugiura

Yutaka Masuda

Yoshio Sasaki

Kohsuke Noura

Kenichi Nagai

Kazunori Mayumi

Yoh Sugimura

Hiroshi Inoue

Akira Tominaga

Hiroshi Kitagawa

Akira Kasari

Reiziro Nishida

Masaru Mitsuji

Yasuhiro Fujii

Hidehiko Haneishi

Satoru Ito

Yugen Kawamoto

Chikara Kawamura

Toshio Ohkoshi

Mototaka Iihashi

Kyoichi Horibe

Tetsuya Yokoyama

Toru Ozaki

Naruhito Ueno

Tohru Ozaki

Toshio Ogasawara

Yasushi Hiramatsu

Junshi Adachi

Masaaki Kobayashi

Hiroyuki Okada

The present invention provides a thermosetting organic solvent type coating capable of forming a cured coating film having a TUKON hardness at 20&deg; C. of 15 or more and the minimum value of dynamic modulus E&prime; at a frequency of 110 Hz in the temperature range of 150-200&deg; C., of 1&times;10,dyn/cm or more. The cured film formed from the coating, as compared with the cured films formed from conventional organic solvent type coatings used as a top coat for automobile (e.g. an organic solvent type coating containing, as main components, a hydroxyl group-containing acrylic resin and a melamine resin, or a carboxylic-epoxy type coating), is at least equivalent in weatherabiIity, finish appearance, acid resistance, etc. and superior in stain resistance.

Coating composition and method for application thereof

The present invention provides a thermosetting organic solvent type coating capable of forming a cured coating film having a TUKON hardness at 20&deg; C. of 15 or more and the minimum value of dynamic modulus E&prime; at a frequency of 110 Hz in the temperature range of 150-200&deg; C., of 1&times;10,dyn/cm,or more. The cured film formed from the coating, as compared with the cured films formed from conventional organic solvent type coatings used as a top coat for automobile (e.g. an organic solvent type coating containing, as main components, a hydroxyl group-containing acrylic resin and a melamine resin, or a carboxylic-epoxy type coating), is at least equivalent in weatherability, finish appearance, acid resistance, etc. and superior in stain resistance.

High-solids coating composition and method for forming topcoat using the same

The present invention provides a thermosetting high solids coating composition comprising (A) a carboxyl-containing compound, (B) a polyepoxide, and (C) a copolymer prepared by polymerizing monomer components comprising (a) 30 to 50% by weight of vinyltrimethoxysilane and/or vinyltriethoxysilane, (b) 5 to 15% by weight of N-methylol(meth)acrylamide alkyl ether, and (c) 35 to 65% by weight of another polymerizable unsaturated monomer, and a method for forming a topcoat using said composition. The composition of the present invention is highly effective in forming a coating film excellent in resistance to both acids and scratch, and is superior in storage stability and recoat adhesion.

Thermosetting, high-solids coating composition and method of forming topcoat by using the same

There is disclosed a novel organic solvent type coating composition capable of making the solid content concentration at the time of coating to higher than 70% by weight, without lowering the properties, which urethane type coating materials have, such as acid resistance, scratch resistance, finishing appearance etc. The composition comprises (A) a vinyl type polymer having both hydroxyl groups and alkoxysilyl groups in the molecule and having a number-average molecular weight in a range of 2,000 to 10,000; (B) a polyol compound having a number-average molecular weight of less than 1,000 and having a hydroxyl value in a range of 120 to 1,000 mgKOH/g; (C) a polyisocyanate compound having a number-average molecular weight of less than 2,000; and (D) a silanol group forming catalyst.

Coating composition

An organic solvent-based heat-curable high solid coating composition comprising:

High solid coating composition and method for forming topcoat using same

The present invention provides a thermosetting organic solvent type coating capable of forming a cured coating film having a TUKON hardness at 20.degree. C. of 15 or more and the minimum value of dynamic modulus E' at a frequency of 110 Hz in the temperature range of 150-200.degree. C., of 1.times.1O.sup.9 dyn/cm.sup.2 or more. The cured film formed from the coating, as compared with the cured films formed from conventional organic solvent type coatings used as a top coat for automobile (e.g. an organic solvent type coating containing, as main components, a hydroxyl group-containing acrylic resin and a melamine resin, or a carboxylic-epoxy type coating), is at least equivalent in weatherability, finish appearance, acid resistance, etc. and superior in stain resistance.

Thermosetting powder coating composition

The invention provides a curable coating composition comprising:

Curable coating composition and method of forming a top coat

The present invention provides a method for forming a multi-layer coating film by applying a colored clear coating (B) containing a color pigment and/or a glittering material, on the film of a leafing type aluminum flake-containing metallic coating (A), wherein the colored clear coating (B) also contains a polymer formed from an unsaturated monomer having a phosphoric acid group represented by --O--PO(OH)(R.sub.1) (wherein R.sub.1 is a hydroxyl group, a phenyl group or a C.sub.1-20 alkyl group) and a hydroxyl group-containing unsaturated monomer. The method can form a multi-layer coating film improved in interlayer adhesivity between the metallic coating film and the colored clear coating film, without reducing the excellent effects and metallic feeling provided by a metallic coating film containing leafing type aluminum flake.

Method for formation of coating film

The present invention provides a method for forming a multi-layer coating film by applying a clear coating (B) on the film of a leafing type aluminum flake-containing metallic coating (A), which method comprises forming a film of the metallic coating (A), curing the film, applying thereon a composition (C) containing a polymer formed from an unsaturated monomer having a phosphoric acid group represented by --O--PO(OH)(R.sub.1) (wherein R.sub.1 is a hydroxyl group, a phenyl group or a C.sub.1-20 alkyl group) and a hydroxyl group-containing unsaturated monomer, and then applying the clear coating (B) on the film of the composition (C). The method can form a multi-layer coating film improved in interlayer adhesivity between the metallic coating film and the clear coating film, without reducing the excellent effects and metallic feeling provided by a metallic coating film containing leafing type aluminum flake.

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.

Coating method

An object of the present invention is to provide a heat-curable high solid coating composition capable of forming a coating film which is excellent in both acid resistance and scratch resistance, and a method for forming a topcoat using said composition. The present invention provides a heat-curable high solid coating composition comprising:

The present invention provides: (1) a self-crosslinking resin (I) having a blocked isocyanate group and a hydroxyl group in the molecule and characterized in that the resin is prepared from a vinyl polymer (A) having at least two free isocyanate groups in the molecule and an acrylic resin (B) having at least two hydroxyl groups in the molecule by reacting some of the hydroxyl groups of the resin (B) with some of the free isocyanate groups of the polymer (A), and subsequently reacting a blocking agent with all the remaining free isocyanate groups, and (2) a self-crosslinking resin (II) having a blocked isocyanate group and a hydroxyl group in the molecule and characterized in that the resin is prepared from a vinyl polymer (C) having a free isocyanate group and a blocked isocyanate group in the molecule and the acrylic resin (B) having at least two hydroxyl groups in the molecule by reacting some of the hydroxyl groups of the resin (B) with all the free isocyanate groups of the polymer (C).

Process for preparing self-crosslinking resin

A curable resin composition, which is not thickened nor gels during storage, can be high solids, cures even at low temperatures and is excellent in electrostatic coating properties, and which contains as main components, a polymer having in one molecule epoxy group(s), and functional group(s) in each of which a carbonate ester group (--O--CO--O--) is directly bound to an aromatic ring; or a mixture of a compound having in one molecule at least two epoxy groups and a compound having in one molecule at least two functional groups in each of which a carbonate ester group (--O--CO--O--) is directly bound to an aromatic ring, and a curing reaction catalyst.

Curable resin composition

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Hadano, Japan

Motoshi Yabuta