Kansai Paint Company, Ltd.

Other

Nissan Motor Company Limited

Yasuyuki Hirata

Akira Tominaga

Masafumi Kume

Naozumi Iwasawa

Koji Kamikado

Tadayoshi Hiraki

Haruo Nagaoka

Eisaku Nakatani

Kenji Yamamoto

Teiji Katayama

Susumu Midogochi

Tsutomu Hattori

Masahiko Sagane

Satoru Nishigaki

Toshio Ogasawara

Masayuki Misawa

Hirofumi Masui

Katsuo Iizuka

Haruhiko Kataoka

Mitsuyoshi Kitano

Shigeo Murofushi

Hiroyuki Morishita

A method for forming an electrodeposition coating film, comprises a step of subjecting a steric metal article to be coated to electrodeposition coating, and a step of selectively heating/drying the resultant coating film by a plurality of induction heating devices.

Method for forming electrodeposition coating film

This invention provides, at a low cost, a low-pollution type cationic electro-coating bath composition which contains neither lead nor chromium, and which comprises cationic electrodeposition paint and, contained therein, a bismuth oxide paste, the amount of the bismuth oxide paste being within a range of 0.1 to 0.3% by weight as metal bismuth on the basis of total solid content of said cationic electro-coating bath composition, and the bismuth oxide paste being prepared by dispersing bismuth oxide (B) in an organic acid-neutralized aqueous dispersion of diethanol amine-added alicyclic epoxy resin (A).

Cationic electro-coating bath composition

A cationically electrodepositable finely divided gelled polymer obtained by emulsion-polymerizing, in the presence of a water-soluble or water-dispersible cationic resin, a monomer component (A) comprising (a) a polymerizable unsaturated vinylsilane monomer having a vinylic double bond and a hydrolyzable akloxysilane group, (b) a polymerizable monomer having at least two radically polymerizable unsaturated groups in the molecule, (c) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (d) other polymerizable unsaturated monomer, and a cationically electrodepositable finely divided gelled polymer obtained by emulsion-polymerizing, in the presence of the above finely divided gelled polymer, a monomer component (B) comprising (e) a blocked mono- or polyisocyanate in which the at least one isocyanate group in the molecule is blocked with a radically polymerizable monohydroxy compound, (f) a polymerizable unsaturated monomer having a vinylic double bond and a hydroxyl group, and (g) other polymerizable unsaturated monomer, said cationically electrodepositable finely divided gelled polymer having a core-sheath structure consisting of a core of the polymerization product of the monomer component (A) and a sheath of the polymerization product of the monomer component (B).

Cationically electrodepositable finely divided gelled polymers having a

A cationic electrodeposition paint composition suitable for a wheel of an automotive vehicle. The paint composition contains an amine-modified epoxy resin and a blocked isocyanate as main components. The paint composition further contains a nonionic emulsified and dispersed type acrylic resin within a range from 6 to 30% by weight in resinous solid content relative to the total resin content of the paint composition, a colloidal silica-containing gelled particulate within a range from 10 to 30 PHR in solid content in paint composition, and an alkyltin ester compound of an aliphatic carboxylic acid within a range from 0.1 to 10 PHR in solid content in the paint composition, thereby improving corrosion resistance of an edge portion of the wheel and a weatherability of a paint film coated on the surface of the steel plate of the wheel.

Cationic electrodeposition paint composition containing colloidal

A method of electrodeposition coating, which comprises performing a first electrodeposition coating on an article as a cathode using (I) a cationic electrodeposition paint comprising (A) a resin and (B) at least one pigment, said pigment (B) containing at least 5% by weight of a pigment having an oil absorption of at least 100 and being incorporated so that the total oil absorption of the pigment (B) is in the range of 1,000 to 10,000 per 100 g of the resin (A), then while the resulting coated film is in the uncured state, performing a second electrodeposition coating on it using (II) an emulsion-type cationic electrodeposition coating paint comprising a resin (C) and a pigment (D) and having a minimum electrodeposition current density of not more than 0.7 mA/cm.sup.2 and a degree of emulsification of at least 80% by weight, said pigment (D) having a lower total oil absorption than the total oil absorption of the pigment (B) in the cationic electrodeposition paint (I), and thereafter curing the applied films under heat to form a composite cured coated film.

Electrodeposition coating method

A cationic electrophoretic coating composition comprising: (A) a water-soluble or water-dispersible resin prepared by neutralizing with an acid addition products of partially blocked polyisocyanate and the reaction products, said reaction products being prepared by reacting at least one of fatty acid and polyamide with adducts prepared by being allowed an epoxy resin to react with a basic amino compound, and (B) at least one of addition polymers of at least one of ethylene oxide and propylene oxide and derivatives of the addition polymers, the polymers and the derivatives thereof having a number average molecular weight of 500 to 10,000 and having a solubility of up to 60 parts by weight in 100 parts by weight of water at 25.degree. C.

Cationic electrophoretic coating compositions

A cationic electrophoretic coating composition comprises a resinous binder which is prepared by reacting an epoxy resin-amine adduct (A) with a partially blocked polyisocyanate (C) and mixing or reacting a polyamide (B) with the resulting product, or by reacting a polyamide (B) with a partially blocked polyisocyanate (C) and mixing or reacting an epoxy resin-amine adduct (A) with the resulting product.

Aqueous cationic coating from amine-epoxy adduct, polyamide, and

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Kanagawa, Japan

Yasuyuki Hirata