Patents by Inventor Nobuhiko Tsuda

Nobuhiko Tsuda 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).

  • Publication number: 20030166780
    Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99 % by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9 % by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150° C. The present invention can provide a composition comprising various heat resisting thermoplastic resins and a fluorine-containing polymer having a functional group which is capable of developing an affinity with said resins and forming a uniform dispersion.
    Type: Application
    Filed: December 31, 2002
    Publication date: September 4, 2003
    Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
  • Patent number: 6552127
    Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150° C.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: April 22, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
  • Patent number: 6551708
    Abstract: To provide a powder coating composition being capable of forming a coating film which has good pigment dispersibility, is excellent in weather resistance, film forming ability, appearance and stain-proofing property and, when used for PCM, is difficult to cause cracks because of its particularly excellent bending resistance at the time of bending of a metal plate. The powder coating composition comprises a powder which contains 100 parts by weight of a vinylidene fluoride copolymer having a melting point of not higher than 150° C., a crystallinity of not higher than 35% and a weight average molecular weight (Mw) of 1×104 to 5×105 and 10 to 400 parts by weight of a methyl methacrylate copolymer having a glass transition temperature of not higher than 110° C. and a weight average molecular weight of 1×104 to 5×105; an average particle size of particles constituting the powder being from 1 to 100 &mgr;m and an apparent density of the powder being from 0.2 to 1 g/ml.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: April 22, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Ryuzi Iwakiri
  • Patent number: 6541552
    Abstract: To provide the aqueous-dispersing composition of synthetic resin which is excellent in stain-proofing property, weather resistance and storage stability and is capable of forming a coating film having a high gloss. The aqueous-dispersing composition of synthetic resin comprises an aqueous dispersion of synthetic resin and a condensate of tetrafunctional silicate compound represented by the formula (I): wherein R comprises R1 (R1 is methyl and/or ethyl) and R2 (R2 is at least one linear or branched alkyl group having 3 to 10 carbon atoms), n is 2 to 15, and contains the condensate of tetrafunctional silicate compound in an amount of 1 to 100 parts by weight on the basis of 100 parts by weight of solid content in the aqueous dispersion of synthetic resin.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: April 1, 2003
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Katsuhiko Imoto, Nobuo Mitsuhata, Masaru Nagato
  • Patent number: 6506843
    Abstract: To provide a thermosetting powder coating composition which comprises a powder of a composite resin comprising a vinylidene fluoride polymer having crosslinkable functional group and a methyl methacrylate polymer and having a melt flow rate of 1 to 1,000 g/10 min when measured at 130° C. at a load of 2.1 kg. The coating composition has advantages that the preparation thereof is easy because pulverization can be carried out at room temperature as well as at low temperatures, the composite resin has excellent compatibility with various curing agents and the composition gives a coating film having excellent properties.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: January 14, 2003
    Assignee: Dajkin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Takahiro Kitahara, Ryuji Iwakiri, Masaru Nagato, Ryoichi Fukagawa, Go Nagai
  • Patent number: 6361865
    Abstract: A surface protective coating layer being excellent in weather resistance and chemical resistance is formed on a synthetic resin substrate. An aqueous dispersion of fluorine-containing resin is applied to the synthetic resin substrate.
    Type: Grant
    Filed: March 9, 2000
    Date of Patent: March 26, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Ryuji Iwakiri, Masaru Nagato, Katsuhiko Imoto
  • Patent number: 6359030
    Abstract: An aqueous-dispersing composition of synthetic resin (A) having an intrinsic viscosity “&eegr;” of from 0.3 to 2.0 measured at 35° C. in a methyl ethyl ketone solvent or a mixture of that aqueous dispersion and an aqueous dispersion of synthetic resin (B) having an intrinsic viscosity “&eegr;” of not less than 0.6 which is larger by 0.3 or more than the intrinsic viscosity “&eegr;” of the synthetic resin (A) when the intrinsic viscosity is measured at 35° C. in a methyl ethyl ketone solvent. The aqueous-dispersing composition and the mixture have improved film forming property and can give a coating film being excellent in chemical resistance, water resistance, mechanical properties and further hot water resistance.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: March 19, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Katsuhiko Imoto, Nobuo Mitsuhata, Masaru Nagato
  • Patent number: 6350806
    Abstract: An aqueous-dispersing composition which gives a coating being excellent in storage stability and forming a coating film being excellent in stain-proofing property and stain removable property and having sufficient gloss and hardness, and the composition contains said colloidal silica, in solid content, in an amount of more than 50 parts by weight up to 300 parts by weight and said organoalkoxysilane in an amount of 0.1 to 20 parts by weight on the basis of 100 parts by weight in solid content of an aqueous dispersion of fluorine-containing polymer particles.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: February 26, 2002
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Katsuhiko Imoto, Nobuo Mitsuhata, Masaru Nagato
  • Patent number: 6326437
    Abstract: An aqueous-dispersing composition of a crosslinkable fluorine-containing resin which comprises an aqueous dispersion of a fluorine-containing seed polymer (B) obtained by seed-polymerizing a non-fluorine-containing monomer containing a non-fluorine-containing monomer (a) having carboxyl group and/or acetoacetyl group and a reactive &agr;,&bgr;-unsaturated group, in an aqueous medium in the presence of particles of a fluorine-containing polymer (A) and a polyvalent metal compound capable of metal crosslinking.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: December 4, 2001
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Katsuhiko Imoto, Nobuo Mitsuhata, Masaru Nagato
  • Publication number: 20010007889
    Abstract: Aqueous dispersion of a vinylidene fluoride (VdF) polymer which comprises a VdF polymer having a particle size of not more than 200 nm and contains 30 to 50% by weight of solids and not more than 1% by weight of a fluorine-containing surfactant on the basis of water. This aqueous dispersion is prepared by emulsion-polymerizing VdF monomer or a monomer mixture containing VdF under coexistence of not more than 1% by weight of the fluorine-containing surfactant and 0.001 to 0.1% by weight of a nonionic non-fluorine-containing surfactant on the basis of water, and is suitably used for paints.
    Type: Application
    Filed: June 11, 1998
    Publication date: July 12, 2001
    Inventors: TAKAYUKI ARAKI, NOBUHIKO TSUDA, MASAHIRO KONDO
  • Publication number: 20010003127
    Abstract: To provide a powder coating composition being capable of forming a coating film which has good pigment dispersibility, is excellent in weather resistance, film forming ability, appearance and stain-proofing property and, when used for PCM, is difficult to cause cracks because of its particularly excellent bending resistance at the time of bending of a metal plate. The powder coating composition comprises a powder which contains 100 parts by weight of a vinylidene fluoride copolymer having a melting point of not higher than 150° C., a crystallinity of not higher than 35% and a weight average molecular weight (Mw) of 1×104 to 5×105 and 10 to 400 parts by weight of a methyl methacrylate copolymer having a glass transition temperature of not higher than 110° C. and a weight average molecular weight of 1×104 to 5×105; an average particle size of particles constituting the powder being from 1 to 100 &mgr;m and an apparent density of the powder being from 0.2 to 1 g/ml.
    Type: Application
    Filed: June 17, 1998
    Publication date: June 7, 2001
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: NOBUHIKO TSUDA, RYUZI IWAKIRI
  • Patent number: 6054537
    Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150.degree. C. The present invention can provide a composition comprising various heat resisting thermoplastic resins and a fluorine-containing polymer having a functional group which is capable of developing an affinity with said resins and forming a uniform dispersion.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: April 25, 2000
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
  • Patent number: 5925705
    Abstract: Aqueous dispersion of a vinylidene fluoride (VdF) polymer which comprises a VdF polymer having a particle size of not more than 200 nm and contains 30 to 50% by weight of solids and not more than 1% by weight of a fluorine-containing surfactant on the basis of water. This aqueous dispersion is prepared by emulsion-polymerizing VdF monomer or a monomer mixture containing VdF under coexistence of not more than 1% by weight of the fluorine-containing surfactant and 0.001 to 0.1% by weight of a nonionic non-fluorine-containing surfactant on the basis of water, and is suitably used for paints.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: July 20, 1999
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Nobuhiko Tsuda, Masahiro Kondo
  • Patent number: 5869574
    Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150.degree. C. The present invention can provide a composition comprising various heat resisting thermoplastic resins and a fluorine-containing polymer having a functional group which is capable of developing an affinity with said resins and forming a uniform dispersion.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: February 9, 1999
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
  • Patent number: 5804650
    Abstract: To provide an aqueous dispersion of a vinylidene fluoride (VdF) copolymer which can be prepared by emulsion-polymerizing VdF monomer with a reactive emulsifying agent and is excellent in stability against sedimentation because an average particle size of the copolymer is as small as not more than 200 nm and a solid content is as high as from 30 to 60% by weight; an aqueous dispersion of a VdF seed polymer which can be prepared by seed-polymerizing an ethylenically unsaturated monomer in the presence of particles obtained by emulsion-polymerizing VdF monomer with a reactive emulsifying agent and is excellent in stability against sedimentation because an average particle size of the seed polymer is as small as not more than 250 nm and a solid content is as high as from 30 to 60% by weight; and processes for preparation thereof.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: September 8, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Ryuzi Iwakiri, Yasushi Yonei, Katsuhiko Imoto, Yoshiki Shimizu, Takayuki Araki, Masahiro Kondo
  • Patent number: 5750626
    Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150.degree. C. The present invention can provide a composition comprising various heat resisting thermoplastic resins and a fluorine-containing polymer having a functional group which is capable of developing an affinity with said resins and forming a uniform dispersion.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: May 12, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Tetsuo Shimizu, Yoshihisa Yamamoto, Seitaro Yamaguchi, Nobuhiko Tsuda, Noriyasu Yamane, Takafumi Yamato, Masahiro Kumegawa, Takayuki Araki
  • Patent number: 5712335
    Abstract: An aqueous dispersion of a fluorine-containing polymer, wherein 1 to 20 parts by weight of solids of an organosilicon compound is admixed on the basis of 100 parts by weight of solids in the fluorine-containing-polymer-dispersed aqueous composition and this aqueous dispersion is useful for a paint capable of forming a coating film which is excellent in adhesion to various base materials, film forming property, weatherability and soil resistance.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: January 27, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuhiko Tsuda, Yasushi Yonei, Ryuzi Iwakiri, Katsuhiko Imoto
  • Patent number: 5646201
    Abstract: Aqueous dispersion of a fluorine-containing copolymer which is prepared by, in an aqueous dispersion containing fluorine-containing copolymer particles which comprise 70 to 95% by mole of vinylidene fluoride and 5 to 30% by mole of chlorotrifluoroethylene, seed-polymerizing 20 to 100 parts by weight of an acrylic acid ester and/or a methacrylic acid ester in the presence of 100 parts by weight of the fluorine-containing copolymer particles. The aqueous dispersion assures excellent film forming property, and can provide a highly glossy coating excellent in mechanical properties, transparency at clear coating and weatherability.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: July 8, 1997
    Assignee: Daikin Industries, Ltd.
    Inventors: Takayuki Araki, Nobuhiko Tsuda, Yasushi Yonei
  • Patent number: 5282854
    Abstract: a fluorine-containing block copolymer comprising at least one soft segment which comprises chlorotrifluoroethylene and vinylidene fluoride and at least one hard segment which comprises a fluorine-containing crystalline polymer, which copolymer has good flexibility and transparency and useful as a material for an artificial lens.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 1, 1994
    Assignee: Daikin Industries Ltd.
    Inventors: Toshiharu Yagi, Nobuhiko Tsuda, Tsuyoshi Noguchi, Kohsaku Sakaguchi, Yoshito Tanaka, Masayoshi Tatemoto
  • Patent number: 5169902
    Abstract: A vibration-proof damping polymer material characterized in that the material is prepared from a polymer substance obtained by dissolving an amorphous fluorine-containing polymer in an acrylic monomer and polymerizing the monomer with or without permitting the resulting polymer to form an interpenetrating polymer network, and a vibration-proof damping polymer material characterized in that the material is prepared from a blend of (a) and (b), (a) being an amorphous fluorine-containing polymer or crystalline polymer containing vinylidene fluoride, and (b) being an acrylic polymer.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: December 8, 1992
    Assignee: Daikin Industries Ltd.
    Inventors: Toshiharu Yagi, Yoshito Tanaka, Tsuyoshi Noguchi, Kohsaku Sakaguchi, Nobuhiko Tsuda