Patents by Inventor Nobushige Numa

Nobushige Numa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6780902
    Abstract: 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.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: August 24, 2004
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Yuji Hirose, Noboru Nakai, Reiziro Nishida, Nobushige Numa
  • Patent number: 6706818
    Abstract: This invention provides a curable resin composition for one-pack type water-based paint which is readily cured regardless of coating environment, said resin composition comprising copolymer (I) which is produced by the copolymerization of unsaturated group-containing urethane prepolymer (A) which is obtained from a reaction of diisocyanate compound (a), glycol compound (b), carboxyl group-containing glycol compound (c) and hydroxyl group-containing ethylenically unsaturated monomer (d), with maleimide group-containing ethylenically unsaturated monomer (e), carbonyl group-containing ethylenically unsaturated monomer (f) and another ethylenically unsaturated monomer (g), and compound (II) which has, per molecule, two or more same or different functional groups selected from hydrazide group, semicarbazide group and hydrazone group
    Type: Grant
    Filed: May 30, 2002
    Date of Patent: March 16, 2004
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Yushichi Ishihara, Masami Sugishima, Nobushige Numa, Mitsutaka Hasegawa, Hiroshi Inukai
  • Patent number: 6686399
    Abstract: Processes for producing within a short time transparent alkyd resins which are substantially free of occurrence of foreign matters or filtration residues are disclosed, which comprise depolymerizing polyester resins whose chief starting material is terephthalic acid and which have been recovered from waste materials and regenerated, with use of a polyhydric alcohol component having tetra- or higher hydric alcohol, and thereafter adding thereto a polybasic acid component (and if necessary a fatty acid component) to effect an esterification reaction.
    Type: Grant
    Filed: February 28, 2002
    Date of Patent: February 3, 2004
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Chicara Kawamura, Kei Ito, Ichiro Yoshihara, Nobushige Numa
  • Publication number: 20030139496
    Abstract: This invention provides a curable resin composition for one-pack type water-based paint which is readily cured regardless of coating environment, said resin composition characteristically comprising both copolymer (I) which is produced from the emulsion polymerization of 1 to 30 % by weight of maleimide group-containing ethylenically unsaturated monomer (a), 1 to 30 % by weight of carbonyl group-containing ethylenically unsaturated monomer (b), 0.01 to 2 % by weight of compound (c) having two or more polymerizable unsaturated group per molecule and 38 to 97.99 % by weight of another ethylenically unsaturated monomer (d), and compound (II) which has, per molecule, two or more same or different functional groups selected from hydrazide group, semicarbazide group and hydrazone group.
    Type: Application
    Filed: May 30, 2002
    Publication date: July 24, 2003
    Inventors: Masami Sugishima, Nobushige Numa, Keiichiro Saikawa, Mitsutaka Hasegawa, Hiroshi Inukai
  • Publication number: 20030125471
    Abstract: This invention provides a curable resin composition for one-pack type water-based paint which is readily cured regardless of coating environment, said resin composition comprising copolymer (I) which is produced by the copolymerization of unsaturated group-containing urethane prepolymer (A) which is obtained from a reaction of diisocyanate compound (a), glycol compound (b), carboxyl group-containing glycol compound (c) and hydroxyl group-containing ethylenically unsaturated monomer (d), with maleimide group-containing ethylenically unsaturated monomer (e), carbonyl group-containing ethylenically unsaturated monomer (f) and another ethylenically unsaturated monomer (g), and compound (II) which has, per molecule, two or more same or different functional groups selected from hydrazide group, semicarbazide group and hydrazone group
    Type: Application
    Filed: May 30, 2002
    Publication date: July 3, 2003
    Inventors: Yushichi Ishihara, Masami Sugishima, Nobushige Numa, Mitsutaka Hasegawa, Hiroshi Inukai
  • Patent number: 6559231
    Abstract: The present invention relates to a curing type water base resin composition comprising: (I) a copolymer obtained by copolymerizing an ethylenically unsaturated monomer (a) having a maleimide group, an ethylenically unsaturated monomer (b) having a carbonyl group and other ethylenically unsaturated monomer (c) and (II) a compound having two or more groups per molecule which are the same or different and selected from a hydrazide group, a semicarbazide group and hydrazone group and further comprising, if necessary, as an additional component: (III) a copolymer having a carbonyl group and/or (IV) a water base polyurethane resin having a carbonyl group or a hydrazine group.
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: May 6, 2003
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Mitsutaka Hasegawa, Hiroshi Inukai, Eiichi Okazaki, Nobushige Numa, Masami Sugishima, Koki Nakamura, Keiichiro Saikawa, Yushichi Ishihara
  • Publication number: 20030065068
    Abstract: The present invention provides a curable resin composition for a water base coating material comprising:
    Type: Application
    Filed: May 30, 2002
    Publication date: April 3, 2003
    Inventors: Hiroshi Inukai, Mitsutaka Hasegawa, Nobushige Numa, Masami Sugishima, Koki Nakamura
  • Publication number: 20030004230
    Abstract: 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.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 2, 2003
    Inventors: Yuji Hirose, Noburo Nakai, Reiziro Nishida, Nobushige Numa
  • Publication number: 20020128379
    Abstract: The present invention relates to a curing type water base resin composition comprising:
    Type: Application
    Filed: November 30, 2001
    Publication date: September 12, 2002
    Inventors: Mitsutaka Hasegawa, Hiroshi Inukai, Eiichi Okazaki, Nobushige Numa, Masami Sugishima, Koki Nakamura, Keiichiro Saikawa, Yushichi Ishihara
  • Patent number: 6268429
    Abstract: The present invention provides an aqueous coating comprising: (A) a resin having hydroxyl group and carboxyl group in the molecule, (B) an alkyl-etherified methylolmelamine resin, and (C) an oxazoline group-containing compound. This aqueous coating can alleviate the problems of conventional aqueous coatings comprising (a) a resin having hydroxyl group and carboxyl group and (b) an alkyl-etherified methylolmelamine resin.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: July 31, 2001
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Masaru Mitsuji, Nobushige Numa, Yugen Kawamoto
  • Patent number: 6211301
    Abstract: Antifouling resins and methods for the production of an antifouling resin comprising reacting (i) a base resin (A) simultaneously comprising a carboxyl group and a group having a polyalkylene glycol structure represented by the formula (I) &Parenopenst;CmH2mO&Parenclosest;n R1  (I) wherein R1 is a hydrogen atom or a straight chain, branched, or cyclic alkyl group or an aralkyl group, m is 1, 2, 3, or 4, and n is an integer of not less than 1 and not more than 100 in the molecular unit, with (ii) the oxide or hydroxide of a metallic atom having a valence of not less than 2 in the presence of present water in an amount of 1-30 wt. %, based on the weight of said base resin (A).
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: April 3, 2001
    Assignee: Kansai Paint Co., LTD
    Inventors: Shinichi Ogino, Nobushige Numa
  • Patent number: 6133380
    Abstract: An antifouling resinous composition comprising as an active component thereof one or more resins represented by the formulasFormula (1)R.sub.p --COO--M--(--o--M--).sub.m --OHFormula (2)R.sub.p --COO--M--(--O--M--).sub.n --OOC--R.sub.pFormula (3) ##STR1## wherein R.sub.p represents a basal resin, M represents in each occurrence the same or different divalent metallic atom, m represents an integer in the range of 1-10, n represents an integer in the range of 0-10, and k represents an integer in the range of 0-10, and contains a metal carboxylate in the molecular unit.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: October 17, 2000
    Assignee: Kansai Paint Co., Ltd
    Inventors: Koji Yamada, Nobushige Numa
  • Patent number: 6072008
    Abstract: A resin composition for use in a coating composition comprising (A) a base resin having a hydroxyl value of 20 to 200, (B) a silicone compound consisting of a partial hydrolysis.condensation product of (i) an organofunctional group-containing alkoxysilane compound containing at least one organofunctional group selected from the group consisting of mercapto group, epoxy group, (meth)acryloyl group, vinyl group, haloalkyl group and amino group, (ii) a tetraalkoxysilane compound and preferably (iii) a trialkoxysilane compound, and (C) a reaction product prepared by partly reacting the hydroxyl group in the base resin (A) with alkoxysilyl group in the silicone compound (B).
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: June 6, 2000
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Yoshizumi Matsuno, Nobushige Numa
  • Patent number: 6060554
    Abstract: The present invention provides an aqueous coating comprising:(A) a resin having hydroxyl group and carboxyl group in the molecule,(B) an alkyl-etherified methylolmelamine resin, and(C) an oxazoline group-containing compound.This aqueous coating can alleviate the problems of conventional aqueous coatings comprising (a) a resin having hydroxyl group and carboxyl group and (b) an alkyl-etherified methylolmelamine resin.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: May 9, 2000
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Masaru Mitsuji, Nobushige Numa, Yugen Kawamoto
  • Patent number: 6025449
    Abstract: A water-soluble acrylic resin which is prepared by neutralizing with a neutralizing agent an acrylic copolymer formed by copolymerizing (a) an alkylene oxide group-containing (meth)acrylate, (b) a cyclic saturated hydrocarbon group-containing (meth)acrylate, (c) a hydroxyl group-containing unsaturated monomer other than the monomer (a), and (d) other unsaturated monomer; a resin composition used for a water-based coating composition and containing, as a vehicle component, the above water-soluble acrylic resin; a water-based coating composition containing, as major components, (A) at Least one resin selected from the group consisting of a water-soluble resin and a water-dispersible resin and (B) a pigment, said pigment (B) being subjected to dispersion treatment; with a water-soluble acrylic resin (C), which is prepared by neutralizing with a neutralizing agent an acrylic copolymer formed by copolymerizing (a) an alkylene oxide group-containing (meth)acrylate, (b) a cyclic saturated hydrocarbon group-containin
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: February 15, 2000
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Masashi Enomoto, Nobushige Numa, Tomokuni Ihara, Hirofumi Fukuyama, Hajime Sukejima, Hiroto Takeuchi
  • Patent number: 5998507
    Abstract: A method for preparing a thermosetting powder coating material comprising: dispersing and mixing a base resin and a crosslinking agent in a dispersing and/or mixing machine equipped with a decompression device at a temperature in the range of 40 to 200.degree. C., to form a dispersed mixture, the dispersed mixture optionally containing a solvent and a pigment; optionally eliminating at least a portion of the solvent under reduced pressure; adding water to the dispersed mixture; reducing the pressure and lowering the temperature of the dispersed mixture to a temperature equal to or less than the softening point of the dispersed mixture; and bringing the dispersed mixture into a powder state or a granule state by dispersion force of the dispersing and/or mixing machine.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: December 7, 1999
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Takato Adachi, Nobushige Numa
  • 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: 5886082
    Abstract: An aqueous coating composition comprising, as main components,(A) an aqueous dispersion of a water-dispersible acrylic copolymer of acid value 20-150 optionally having hydroxyl group, which copolymer is obtained by copolymerizing an alkoxysilane group-containing vinyl monomer with a carboxyl group-containing unsaturated monomer and, as necessary, other polymerizable monomer copolymerizable with said monomers,(B) an aqueous polyurethane resin, and optionally(C) a polyisocyanate compound.With this composition, there can be formed, on a substrate, a coating film which is excellent in water resistance and solvent resistance and which is good in adhesivity, finish of film, etc.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: March 23, 1999
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Nobushige Numa, Yoshihiro Okamoto
  • Patent number: 5763535
    Abstract: A process for production of a powder coating comprising: copolymerizing a monomer mixture comprising a (meth)acrylate monomer having branched or cyclic substituents of four or more carbon atoms in its side chain and a (meth)acrylate monomer having functional groups to form a thermosetting vinyl copolymer (a) having a glass transition temperature of approximately 40.degree. to 100.degree. C. and a number average molecular weight of approximately 1,000 to 10,000; dissolving or dispersing said copolymer (a) and a crosslinking agent (b) in a solvent comprising approximately at least 50% by weight based on the weight of the solvent, of tert-butanol, to form a resulting coating solution having a melting point of not less than approximately -30.degree. C.; and lyophilizing said coating solution under a pressure not higher than approximately 50 mmHg.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: June 9, 1998
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Takato Adachi, Nobushige Numa
  • Patent number: 5658988
    Abstract: A one-package resinous coating composition, especially for automobile finishes (A) a resin having a siloxy group, and (B) a catalyst for dissociating the siloxy group. Resinous mixture (A) contains one or more of the following (A-1) through (A-4).
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: August 19, 1997
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Shinichi Ogino, Nobushige Numa, Shinji Tomita, Hajime Sukejima