Kansai Paint Company, Ltd.

Reiziro Nishida

Akira Tominaga

Tadashi Watanabe

Shigeo Nishiguchi

Yasuharu Nakayama

Koji Kamikado

Tadayoshi Hiraki

Haruo Nagaoka

Eisaku Nakatani

Kenji Yamamoto

Teiji Katayama

Fumiaki Nakao

Satoru Enomoto

Hiroshi Igarashi

Hiroshi Inoue

Motoshi Yabuta

Nobushige Numa

Akira Kasari

Noboru Nakai

Yoshio Sasaki

Katsuhisa Sugisaki

Yuji Hirose

Tohru Ozaki

The present invention provides an aqueous coating composition comprising a carboxyl-containing, acrylic-modified polyester resin (B) neutralized and dispersed in an aqueous medium, the polyester resin (B) being obtainable by reacting a carboxyl-containing acrylic resin (c) with an epoxy-modified polyester resin (A) prepared by esterification of a carboxyl-containing polyester resin (a) having a number average molecular weight of 1,000 to 30,000 and an acid value of 5 to 200 mg KOH/g with a 1,2-epoxy-containing low-molecular-weight epoxy compound (b) having a number average molecular weight of 1,200 or less.

Water-based coating composition

The present invention provides a resin composition for coating, capable of forming a coating film excellent in electrodeposition property, coating surface smoothness and anticorrosivity in spite of small content of organic solvent and without containing a lead compound, and comprising a modified epoxy-polyamine resin (f), obtained by first reacting a diepoxide compound (a), wherein a specified amount of alkylene oxide has been introduced, and a bisphenol A type epoxy resin of an epoxy equivalent 170-500 with a bisphenol (b), reacting the epoxy resin (c) thus obtained with a cyclic ester (d), and further reacting the modified epoxy resin (e) thus obtained with an amine compound having active hydrogen.

Advanced bisphenol and oxyalkylene diepoxides reacted with cyclic ester, amine and blocked isocyanate

Bisphenol and oxyalkylene diepoxide-advanced epoxy resin with cyclic ester and amine

This invention relates to cationic electro-coating composition which comprises blending which an aqueous dispersion or an aqueous dispersion paste which contains an organic acid-modified bismuth compound in a non-water-soluble state, and which is obtained by mixing and grinding a bismuth compound and an organic acid in an aqueous medium. Said cationic electro-coating composition, although containing no lead compounds, is capable of forming an electrocoated film which is excellent in corrosion resistance, appearance, etc.

Cationic electrodeposition paint composition

There is disclosed a cationic electrodeposition coating composition containing bismuth lactate derived from a lactic acid, whose L-isomer content is at least 80% by weight, or bismuth methoxyacetate in a form of being dissolved in an aqueous medium. The electrodeposition coating composition can form a coating film having excellent anticorrosivity and finishing property without containing a lead compound.

Cationic electrodeposition coating composition

A self-curing cationically electrodepositable resin useful as a paint composition having in the molecule:

Cycloaliphatic epoxy and primary hydroxyl groups-containing cationic

A resin composition for a cationically electrodepositable paint comprising

Resin composition for cationically electrodepositable paint comprising

Cationically electrodepositable paint comprising hydroxyl and cationic

A thermosetting coating composition comprising as essential components:

Hydroxyl and carboxyl groups-containing resin with alicyclic polyepoxide

An article coated with a cationically electrodepositable paint composition comprises (A) a resin having hydroxyl and cationic groups, (B) an epoxy resin having at least 2 epoxy groups, each directly bound to an alicyclic ring, and (C) lead hydroxide and/or lead maleate as curing catalyst(s).

Article coated with cationic and hydroxyl group-containing resin and

A resin composition for cationically electro-depositable paint comprising (A) a base resin containing a primary hydroxyl group and a cationic group and (B) a crosslinking agent, said crosslinking agent (B) being a product obtained by reacting (B-1) a compound containing in a molecule one hydroxyl group and at least one alicyclic epoxy group with (B-2) a polyisocyanate compound selected from aliphatic, alicyclic and aromatic-aliphatic polyisocyanates such that in principle, a free isocyanate group substantially does not remain.

Resin composition for cationically electrodepositable paint containing

A resin composition for cationically electrodepositable paint comprising, as principal components, (A) a resin containing a hydroxyl group and a cationic group, (B) an epoxy resin containing, per molecule, on the average at least 2 epoxy group-containing functional groups with an epoxy group bound to an alicyclic skeleton and/or a bridged alicyclic skeleton, and (C) a finely divided gelled polymer, said finely divided gelled polymer (C) being obtained by, in the first step, emulsion polymerizing (I) a monomer component composed of

A cationically electrodepositable resin composition containing as main component primary hydroxyl group-containing cationic resin obtained by reacting epoxy resin (A) having at least three epoxy group-containing functional groups represented by the following structural formula (I) ##STR1## with primary or secondary amine compound (B) containing primary hydroxyl group and optionally, further phenol compound (C) having at least one phenolic hydroxyl group in one molecule, as well as a cationically electrodepositable paint composition containing as main components said cationic resin and curing agent.

Cationically electrodepositable resin composition based on

Cationically electrodepositable rein composition based on

A cationically electrodepositable paint composition comprises (A) a resin having hydroxyl groups and cationic groups, (B) an epoxy resin having at least two epoxy groups, each directly bound to a (bridged) alicyclic ring, and (C) lead hydroxide and/or lead maleate as curing catalyst(s).

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Chigasaki, Japan

Reiziro Nishida