Patents Assigned to Kansai Paint Company, Limited
  • Patent number: 6177488
    Abstract: The present invention provides an aqueous colored base coating composition (A) comprising a hydroxyl- and carboxyl-containing acrylic resin (A-1), a melamine resin (A-2), an alicyclic epoxy-containing compound (A-3), a neutralizing agent (A-4) and a coloring pigment (A-5). The present invention further provides a method for forming a topcoat which comprises applying the aqueous colored base coating composition (A) to a substrate and applying to the base coat an organic solvent type clear coating composition (B) to be cured by the crosslinking reaction between a carboxyl group and an epoxy group.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: January 23, 2001
    Assignee: Kansai Paint Company, Limited
    Inventors: Akira Kasari, Hiroaki Oda, Junichi Kajima, Mikio Shimakawa
  • Patent number: 6174965
    Abstract: The present invention provides a polyester resin having in the molecule at least one quaternary ammonium base represented by the formula (wherein X is halogen and R is alkyl), and a process for its production. The present invention further provides a pigment dispersion containing a pigment and the above polyester resin as resin for dispersion of the pigment, and also provides a coating composition containing the above pigment dispersion.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: January 16, 2001
    Assignee: Kansai Paint Company, Limited
    Inventors: Fumio Yamashita, Yoshiyuki Yukawa, Haruhiko Aida
  • Patent number: 6162861
    Abstract: The present invention provides a granulated powder coating composition prepared by granulating a starting powder coating composition having an average particle size of 10 .mu.m or less to an average particle size suitable for powder coating; and a process for preparing a granulated powder coating composition, comprising granulating a starting powder coating composition having an average particle size of 10 .mu.m or less to an average particle size suitable for powder coating.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: December 19, 2000
    Assignee: Kansai Paint Company, Limited
    Inventors: Yugen Kawamoto, Yoshinori Kato, Shinichi Ueda, Mituo Wakimoto, Toshio Ohkoshi
  • Patent number: 6149754
    Abstract: A method of forming reproduced in images on the surface of cured coating, the method including the steps of treating a surface of a cured coating with an organic solvent which does not dissolve the cured coating, but slightly dissolves a reproduced image layer and has a solubility parameter of about 7.5 to about 8.2, superposing, over the cured coating, a copying sheet which comprises a copy support having a reproduced image layer formed thereon to bring the reproduced image layer of the copying sheet into contact with the organic solvent-treated surface of cured coating, heat-transferring the reproduced image to the treated surface of cured coating, releasing the copy support to provide a transfer product on the cured coating, and forming a clear coating on the surface of the transfer product.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: November 21, 2000
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kansai Paint Company Limited
    Inventors: Kentaro Ogata, Motohito Nakashima, Akira Suzuki, Kyoji Inoue, Hideo Haga, Keiji Miyatake, Tsutomu Nagasao, Takeshi Tomiyama
  • Patent number: 6099968
    Abstract: The present invention provides an aqueous metallic coating composition comprising (A) 100 parts, based on solids, of a film-forming aqueous acrylic polymer obtained by neutralizing a copolymer having a number average molecular weight of 2,000 to 200,000, an acid value of 10 to 110 mg KOH/g and a hydroxyl value of 20 to 100 mg KOH/g, the copolymer being obtained by copolymerizing (a) 10 to 35 wt. % of styrene, (b) 5 to 25 wt. % of C.sub.6-18 alkyl (meth)acrylate, (c) 0.1 to 10 wt. % of phosphoric ester group-containing polymerizable unsaturated monomer represented by the general formula ##STR1## wherein X is a hydrogen atom or methyl, and m is an integer of 1 to 3, (d) 2 to 10 wt. % of carboxyl-containing polymerizable unsaturated monomer, (e) 5 to 20 wt. % of hydroxyl-containing polymerizable unsaturated monomer, and (f) 0 to 77.9 wt. % of other polymerizable unsaturated monomer, and (B) 2 to 100 parts by weight of a metallic flake pigment; and a method for forming a topcoat using the composition.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: August 8, 2000
    Assignee: Kansai Paint Company, Limited
    Inventors: Hiromi Harakawa, Kenya Suzuki
  • Patent number: 6045873
    Abstract: The present invention provides:(1) a one-packed epoxy resin composition comprising(A) an epoxy resin having two or more epoxy groups in its molecule and a number average molecular weight of 250 to 4,500,(B) a ketimine compound,(C) a dehydrating agent, and(D) at least one modified epoxy resin (d-1) selected among urethane-modified epoxy resins, amine-modified epoxy resins and dimer-modified epoxy resins and/or a resin (d-2) which has a softening point of 60.degree. C. or above and is at least one member selected among xylene resins, ketone resins, coumarone resins and petroleum resins;(2) a one-packed anticorrosive paint composition comprising the above one-packed epoxy resin composition and (E) a zinc dust in such an amount as to be present in a proportion of 20 to 95 wt.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: April 4, 2000
    Assignee: Kansai Paint Company, Limited
    Inventors: Yoshimitsu Adachi, Toshihiro Hamamura
  • Patent number: 6031028
    Abstract: This invention provides a cationic electrodeposition coating composition comprising(A) a resin prepared by reacting an epoxy- or carboxyl-containing acrylic polymer, a bisphenol compound and a bisphenol diglycidyl ether-type epoxy resin to produce an epoxy-containing resin and introducing thereinto cationic groups and(B) a hydroxyl- and amino-containing acrylic resin, the resins (A) and (B) being crosslinked and cured by urethanation reaction with (C) an isocyanate crosslinking agent component. The cationic electrodeposition coating composition of the invention is excellent in curability and in corrosion resistance of the cured coating film.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: February 29, 2000
    Assignee: Kansai Paint Company, Limited
    Inventors: Yutaka Iino, Katsuhisa Sugisaki, Koji Kamikado
  • Patent number: 5929158
    Abstract: The invention provides a non-aqueous polymer dispersion wherein a particulate polymer is dispersed in an organic solvent containing a dispersion stabilizer resin, the polymer being insoluble to the organic solvent and containing a fluoroalkyl group-containing (meth)acrylate as a monomer component. The invention further provides a curable composition comprising the non-aqueous polymer dispersion, a hydroxyl group containing resin and at least one crosslinking agent selected from the group consisting of amino resins, tris(alkoxycarbonylamino)triazines, polyisocyanate compounds and blocked polyisocyanate compounds. A highly stain-resistant coating film can be formed using the dispersion or composition of the invention.
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: July 27, 1999
    Assignee: Kansai Paint Company, Limited
    Inventors: Yoshizumi Matsuno, Nobushige Numa, Chihiro Nagano, Satoshi Ikushima, Yasumasa Okumura
  • Patent number: 5912052
    Abstract: This invention is directed to a method of pattern coating, comprising the steps of: coating a substrate with an aqueous colored coating composition comprising a neutralization product of an acrylic copolymer containing an alkoxysilyl group and a carboxyl group and a coloring pigment, using a spray device having a fine-orifice nozzle(s) to give a pattern coating layer, and coating the pattern coating layer with a clear coating composition.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: June 15, 1999
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kansai Paint Company, Limited
    Inventors: Kazuyuki Kuwano, Mamoru Sugiura, Keita Ono, Yukiko Hayashi, Kyoichi Horibe, Hiroaki Kiyata
  • Patent number: 5902644
    Abstract: A method of forming a topcoat from a base coat and clear coat comprises applying to the surface of an undercoat or intercoat a base coat containing (A) a compound having at least two epoxy groups per molecule, (B) a compound having at least two carboxyl groups per molecule, wherein at least one of compounds (A) and (B) possesses hydroxyl groups, (C) a melamine resin with from 0.3-3.5 imino groups, from 2-5.5 alkyl ether groups per triazine nucleus and having a polymerization degree of from 1.6-3.5, and (D) pigment(s); then applying a clear coat prepared from (A) a compound having at least two epoxy groups per molecule and (B) a compound having at least two carboxyl groups per molecule, and curing by heating.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: May 11, 1999
    Assignee: Kansai Paint Company, Limited
    Inventors: Yasumasa Okumura, Hiroshi Igarashi, Hiroshi Kitagawa, Hironori Tonomura
  • Patent number: 5827575
    Abstract: The present invention provides a method for forming a topcoat which comprises applying an aqueous colored base coating composition comprising a hydroxyl- and carboxyl-containing acrylic resin, a melamine resin, an alicyclic epoxy-containing compound, a neutralizing agent, and a coloring pigment to a substrate and applying to the base coat an organic solvent type clear coating composition to be cured by the crosslinking reaction between a carboxyl group and an epoxy group.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: October 27, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Akira Kasari, Hiroaki Oda, Junichi Kajima, Mikio Shimakawa
  • Patent number: 5821314
    Abstract: This invention provides a thermosetting composition comprising (A) a compound (A-1) containing an epoxy group or groups and a reactive silicon group or groups as essential functional group components in the same molecule, or a mixture (A-2) of an epoxy group-containing compound and a reactive silicon group-containing compound, and (B) an organotin catalyst, a thermosetting composition comprising (A) a compound (A-3) containing (i) an epoxy group or groups, (ii) a reactive silicon group or groups and (iii) a hydroxyl group or groups and/or a carboxyl group or groups as essential functional group components in the same molecule, or a mixture (A-4) of at least two types of compounds, each compound containing at least one member selected from the class consisting of functional group components (i) to (iii), and all of the functional group components (i) to (iii) being present in said mixture, and (B) an organotin catalyst; and methods of forming a finish coat using these thermosetting compositions.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: October 13, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Satoshi Ikushima, Yasumasa Okumura, Osamu Isozaki, Minoru Tsunoda
  • Patent number: 5792806
    Abstract: An aqueous coating composition which includes, as essential components thereof, (A) an acrylic resin emulsion, (B) a urethane resin emulsion, (C) a crosslinking agent and (D) an acidic phosphate or phosphite ester.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: August 11, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Yoshinori Yamamoto, Tuguo Nezu, Yoshinori Kato
  • Patent number: 5747599
    Abstract: Disclosed is a thermosetting coating composition comprising (A) an epoxy compound and (B) an aromatic sulfonium salt represented by the formula ##STR1## wherein R.sup.1 represents a hydrogen atom, a hydroxyl group, an alkoxyl group, or a group represented by the formula ##STR2## wherein Y represents an alkyl group, an alkoxyl group, a phenyl group or a phenoxy group all of which may have a substituent, each of R.sup.2 and R.sup.3 represents a hydrogen atom, a halogen atom, or an alkyl group, each of R.sup.4 and R.sup.5 represents an alkyl group, an aralkyl group or an aryl group all of which may have a substituent, and X.sup.- represents SbF.sub.6.sup.-, PF.sub.6.sup.-, AsF.sub.6.sup.-, or BF.sub.4.sup.-.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: May 5, 1998
    Assignee: Kansai Paint Company, Limited
    Inventor: Kazuhiko Ohnishi
  • Patent number: 5726230
    Abstract: Disclosed is an aqueous coating composition which comprises a water-dispersible resin and an ester of a polyglycerin ether with a fatty acid.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: March 10, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Masahiro Murata, Toshio Kurihara, Akira Suehiro, Syuichi Ikenoue
  • Patent number: 5719234
    Abstract: 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:(A) a carboxyl-containing compound,(B) a vinyl polymer having an epoxy group, a hydroxyl group and a hydrolyzable alkoxysilyl group in one molecule,(C) a reactive organopolysiloxane, and(D) a crosslinked particulate polymer. The present invention also provides a method for forming a topcoat using said composition.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: February 17, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Motoshi Yabuta, Masaaki Saika, Satoru Ito, Hiroyuki Okada, Yasumasa Okumura, Hiroshi Igarashi, Satoshi Ikushima
  • Patent number: 5705595
    Abstract: This invention provides an aqueous intercoat composition comprising, as main components, (A) a polyester resin having a hydroxyl group and a carboxyl group in one molecule, (B) a blocked product of at least one polyisocyanate selected from a polymer of aliphatic polyisocyanate, an adduct of said polymer with an active hydrogen-containing compound and an adduct of aliphatic polyisocyanate with an active hydrogen-containing compound, and (C) water. The aqueous intercoat composition of the invention is capable of forming a coating film excellent in chipping resistance.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: January 6, 1998
    Assignee: Kansai Paint Company, Limited
    Inventors: Hiroaki Oda, Mikio Shimakawa, Hisashi Isaka, Naoji Matsumoto
  • Patent number: 5691002
    Abstract: The coating method of the present invention comprises sequentially applying an amine-neutralized type aqueous intermediate coating composition and an amine-neutralized type aqueous top coating composition, the method being characterized in that a coating composition mainly comprising (A) an amine-neutralized base resin having a hydroxyl value of 30 to 150 KOH mg/g and an acid value of 15 to 50 KOH mg/g, (B) an amino resin and (C) an organic sulfonic acid amine salt is used as the amine-neutralized type aqueous intermediate coating composition. The method of the present invention can improve the adhesion between layers of a multi-layer coating film formed from aqueous coating compositions and chipping resistance of said coating film.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: November 25, 1997
    Assignee: Kansai Paint Company, Limited.
    Inventors: Hiroaki Oda, Masaru Mitsuji, Yasumasa Okumura, Hiroshi Inoue, Hisashi Isaka
  • Patent number: 5684095
    Abstract: The invention relates to a curable coating composition comprising:(a) a hydroxyl-containing polyester resin having a solubility parameter in the range of 10.0 to 12.0,(b) a polyepoxide,(c) a silicon compound having 1 to 20 silicon atoms in one molecule and represented by the rational formulaSiO.sub.(4-(a+b))/2 (OR.sup.1).sub.a (OR.sup.2).sub.b (1)wherein R.sup.1 is an alkyl group having 1 to 3 carbon atoms, or a hydrogen atom, R.sup.2 is an aryl group, an aralkyl group, or a monovalent hydrocarbon group containing an ether linkage and/or ester linkage and having 4 to 24 carbon atoms, a represents a number between 0.10 to 3.95 and b represents a number between 0.05 and 1.95, provided that a+b=4 or less,(d) at least one chelate compound selected from the group consisting of aluminum chelate compounds, titanium chelate compounds, zirconium chelate compounds and tin chelate compounds, and(e) an organic solvent.
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: November 4, 1997
    Assignee: Kansai Paint Company, Limited
    Inventors: Kotaro Morimoto, Chicara Kawamura, Noboru Nakai, Haruhiko Aida, Noboru Takoh, Satoru Ito
  • Patent number: 5641574
    Abstract: A process for forming an overcoat by the two-coat one-bake method wherein a base coat composition and a clear coat composition are applied to a substrate ##STR1## wet-on-wet and thereafter cured at the same time by heating, the process being characterized in that the base coat composition is an aqueous coating composition consisting primarily of: (I) an aqueous dispersion or solution of a polymer containing a crosslinkable functional group, (II) a crosslinking agent, (III) a coloring pigment, and (IV) water, the clear coat composition being a coating composition comprising: (A) at least one resin selected from the group consisting of (i) a resin having at least one epoxy group and at least one hydroxyl group in the molecule, (ii) a resin mixture of (ii-1) a resin having at least two epoxy groups in the molecule and (ii-2) a resin having at least two hydroxyl groups in the molecule, (iii) a resin having at least two epoxy groups in the molecule, and (iv) any mixture thereof, (B) a crosslinking agent comprising
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: June 24, 1997
    Assignees: E. I. Du Pont de Nemours and Company, Kansai Paint Company, Limited
    Inventors: Akira Kasari, Satoshi Ikushima, Osamu Isozaki, Naoji Matsumoto, John David Nordstrom