Kansai Paint Company, Ltd.

Haruhiko Aida

Yasumasa Okumura

Satoshi Ikushima

Yoshiyuki Yukawa

Motoshi Yabuta

Seiji Wada

Ken-ichi Hasada

Osamu Isozaki

Noboru Nakai

Hiroshi Igarashi

Shigeo Nishiguchi

Akimasa Nakahata

Satoru Ito

Hideo Sugai

Masaaki Saika

Fumio Yamashita

Chicara Kawamura

Noboru Takoh

Kenichi Nagai

Kotaro Morimoto

Sachio Yamaguchi, Deceased

This invention provides a thermosetting organic solvent paint comprising (A) a compound having at least two alicyclic epoxy groups in one molecule and having a number average molecular weight of less than 2000, (B) a secondary amino group-containing compound and (C) a thermolatent cationically polymerizable catalyst and further, under circumstances, (D) colloidal silica, and capable of forming a rigid coating film which is hard, tough and excellent in stain resistance, and from which pollutants, if adhered, are easily removed. This invention further provides a method to form a multi-layered top coating film which comprises applying, to a material to be coated, one or more species of colored paint and one or more species of clear paint in order, said method being characterized in that the above-mentioned paint is used as a clear paint which is to be applied on the uppermost layer.

Coating composition and method for coating therewith

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 polyester resin having in the molecule at least one quaternary ammonium base represented by the formula

Polyester resin, process for its production and its use

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.

The invention relates to a curable coating composition comprising:

Hydroxyl-containing polyester, polyepoxide and silicon compound

The invention provides a method of forming a top coat by forming in sequence a colored base coat on a substrate and a clear coat, the method being characterized in that at least one of the colored base coat and the clear coat is formed by a curable coating composition consisting essentially of:

Method of forming a top coat

The invention provides a lactone-modified organopolysiloxane compound represented by the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each represents a methyl group, an ethyl group, a n-propyl group, an isopropyl group or a group represented by the formula ##STR2## wherein R.sub.5 is a methyl group, an ethyl group, a n-propyl group or an isopropyl group, X is a saturated divalent hydrocarbon group having 2 to 14 carbon atoms, and m is an integer of 1 to 3, provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a group represented by the formula ##STR3## wherein R.sub.5, X and m are as defined above, and n is an integer of 1 to 100. The polysiloxane compound of the invention is excellent in compatibility with various organic resins.

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Hiratsuka, Japan

Haruhiko Aida