Patents by Inventor Kazuhide Hayama

Kazuhide Hayama 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: 6921576
    Abstract: An active energy ray-curable antistatic coating composition contains (A) inorganic oxide fine particles having a side chain having a molecular weight of at least 300 and having a functional group and (B) an antistatic agent containing at least a quaternary ammonium salt group-containing polymer, a quaternary ammonium salt group-containing silane coupling agent and/or a hydrolysis condensate of the silane coupling agent, and optionally contains (C) a polyfunctional (meth)acrylate having at least 3 (meth)acryloyl groups in a molecule.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: July 26, 2005
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Makoto Terauchi, Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 6616920
    Abstract: The invention provides a nail-care polymer with great adhesion to nail, good surface smoothness and gloss and high coating durability for use in a nail-care product.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: September 9, 2003
    Assignee: Mitsubishi Chemical America, Inc.
    Inventors: Kayo Ito, Tomoaki Hiwatashi, Shigeoki Kawaguchi, Yukio Saito, Kazuhide Hayama
  • Publication number: 20030129421
    Abstract: An active energy ray-curable antistatic coating composition contains (A) inorganic oxide fine particles having a side chain having a molecular weight of at least 300 and having a functional group and (B) an antistatic agent containing at least a quaternary ammonium salt group-containing polymer, a quaternary ammonium salt group-containing silane coupling agent and/or a hydrolysis condensate of the silane coupling agent, and optionally contains (C) a polyfunctional (meth)acrylate having at least 3 (meth)acryloyl groups in a molecule.
    Type: Application
    Filed: October 9, 2002
    Publication date: July 10, 2003
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Makoto Terauchi, Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 6586106
    Abstract: Described is a thermoplastic resin film having on a surface thereof a hydroxy-modified imine polymer containing repeating units represented by the following general formula (I) in an amount of 5 mol % or more based on the total of repeating units.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: July 1, 2003
    Assignee: Yupo Corporation
    Inventors: Nobuhiro Shibuya, Kazuhisa Kitamura, Ayako Shibata, Yasuo Kitani, Kazuhide Hayama
  • Patent number: 6403731
    Abstract: Disclosed is a process for preparing a polymer solution having a reduced unreacted unsaturated monomer content, comprising radically polymerizing at least one unsaturated monomer in a solvent in the presence of a radical polymerization initiator, the at least one unsaturated monomer having a lower boiling point than that of the solvent, wherein the weight ratio of the total amount of the unsaturated monomers to the solvent is from 1/9 to 7/3, the polymerization is carried out until the conversion of the unsaturated monomer having the lowest conversion of all the other unsaturated monomers whose boiling point is lower than that of the solvent reaches at least 85%, and, after completion of the polymerization, the reaction mixture is rectified to remove the unreacted unsaturated monomer or monomers.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: June 11, 2002
    Assignee: Mitsubishi Chemical America, Inc.
    Inventors: Yukio Saitou, Shigeoki Kawaguchi, Kouhei Sawa, Tadahiko Kondou, Kazuhide Hayama
  • Publication number: 20020054991
    Abstract: Described is a thermoplastic resin film having on a surface thereof a hydroxy-modified imine polymer containing repeating units represented by the following general formula (I) in an amount of 5 mol % or more based on the total of repeating units.
    Type: Application
    Filed: August 6, 2001
    Publication date: May 9, 2002
    Applicant: YUPO CORPORATION
    Inventors: Nobuhiro Shibuya, Kazuhisa Kitamura, Ayako Shibata, Yasuo Kitani, Kazuhide Hayama
  • Patent number: 6375932
    Abstract: A hair cosmetic composition having an excellent hair setting property, and which imparts to hair good flexibility and a good finish feeling. The hair cosmetic composition comprises (a) a water-soluble amine-oxide-containing polymer having a weight-average molecular weight of 10,000 to 500,000 and (b) a water-soluble polymer selected from the group consisting of nonionic, cationic, anionic and amphoteric polymers. The weight ratio of component (a) to component (b) falls within a range of from 1:10 to 10:1. Components (a) and (b) are incorporated in a total amount of from 0.1 to 10 wt. % based on the hair cosmetic composition.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: April 23, 2002
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Tomoaki Hiwatashi, Yasuo Kitani, Kanji Narazaki, Kayo Itou, Kazuhide Hayama
  • Patent number: 6300411
    Abstract: The present invention discloses an aqueous resin composition containing (A) a copolymer of (a) a monomer having one or more aldehyde groups or ketone groups, and a radical polymerizable unsaturated bond, in a molecule, with (b) a monomer having a radical polymerizable unsaturated bond copolymerizable with the monomer (a); (B) a hydrazine compound of the following formula (1) where R1, R2, R3 and R4 independently represent a hydrogen atom, or a hydroxyl group, p denotes an integer of 0 to 3, and q denotes an integer of 2 to 8, provided that the relationships p+q≦8 and p<q are satisfied; and an aqueous medium. When the aqueous resin composition of the present invention is applied and then dried, a film excellent in film intactness, transparency, whitening after water immersion, and adhesion after water immersion can be formed.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: October 9, 2001
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshiya Seko, Kazuhide Hayama, Yasuo Kitani, Kazumasa Kinugasa
  • Patent number: 6123933
    Abstract: A hair cosmetic composition comprising an amine-oxide-containing water-soluble resin having a weight-average molecular weight of 5,000 to 1,000,000. The hair cosmetic composition of the present invention has excellent setting force, conditioning effects and hair-washing property and being free from stickiness.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: September 26, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuhide Hayama, Yasuo Kitani, Tomoaki Hiwatashi
  • Patent number: 6017974
    Abstract: An activation energy beam curable coating composition containing (A) a polymer having an organopolysiloxane unit and a quaternary ammonium salt unit and (B) a polyfunctional acrylate having 3 or more acryloyl groups in the molecule is disclosed. A film excellent in abrasion resistance, antistatic properties and transparency can be formed by applying the activation energy beam curable coating composition of the present invention to the surface of a material, and irradiating the coated surface with an activation energy beam.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: January 25, 2000
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 5565501
    Abstract: The present invention provides a composition comprising (a) a carboxyl-group containing multifunctional acrylate; (b) a multifunctional acrylate having three or more acryloyl groups in the molecule; (c) an organic solvent; and optionally, (d) a photopolymerization initiator, (e) a colloidal metal oxide and (f) an acrylic resin is provided. This composition is applied to a plastic substrate and then irradiated with active energy rays, thereby forming a hard-coating layer having good adhesiveness to the substrate, transparency and hardwearing properties.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: October 15, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 5543440
    Abstract: A process for producing a powdered carboxyl-containing polymer comprising mixing a solution of a water-insoluble polymer containing a carboxyl group per molecule in a hydrophilic organic solvent (e.g., ethanol) and an aqueous solution of a dispersant comprising a neutralized copolymer of a carboxyl-containing unsaturated monomer and a (meth)acrylic ester to precipitate the water-insoluble polymer. Fine polymer particles free from adhesion or agglomeration are obtained efficiently. Since any residual unreacted carboxyl-containing monomers are dissolved out in water as a precipitating solvent, the resulting powdered polymer has a reduced residual content of the unreacted monomers which may be poisonous and is therefore useful as a base resin of cosmetics or a coating resin for applications involving contact with the skin.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: August 6, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuhide Hayama, Yukio Saitoh, Yasuo Kitani, Katsuhiko Yamada
  • Patent number: 5480634
    Abstract: A polymer suitable for use in hair care products comprising a copolymer comprising(a) a unit of a hydrophilic ethylenically unsaturated monomer such as dimethylaminoethyl methacrylate in a quantity of 15 to 99.9% by weight;(b) a unit of an ethylenically unsaturated monomer having a polysiloxane group such as: ##STR1## in a quantity of 0.1 to 85% by weight; and (c) a unit of an optional hydrophobic unsaturated monomer such as lauryl methacrylate in a quantity of 0 to 84.9% by weight.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: January 2, 1996
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuhide Hayama, Kanji Narazaki, Sigeoki Kawaguchi
  • Patent number: 5409965
    Abstract: An active energy ray-curing abrasion resistant coating composition is provided by incorporating following components: (a) a carboxylate-containing polyfunctional acrylate obtained by reacting a tetracarboxylic dianhydride and a hydroxyl group-containing polyfunctional acrylate having hydroxyl group(s) and at least three acryloyl groups and then neutralizing the reaction product; (b) a polyfunctional acrylate having at least three acryloyl groups; (c) an organic solvent; and (d) a photopolymerization initiator. The composition may comprise in addition to the components (e) a silica sol in an organic solvent as a dispersion medium. The composition may further comprise in addition to the components (f) an acrylic resin. Such composition is an active energy ray-curing abrasion-resistant coating composition which forms a film having excellent adhesion to a plastic sustrate, transparency, abrasion resistance and antistatic properties.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: April 25, 1995
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 5378735
    Abstract: An ultraviolet-curing covering composition comprising Component A which is obtained by reacting a hydroxyl group-containing polyfunctional acrylate with a silane coupling agent containing an isocyanate group(s), Component B of a polyfunctional acrylate having 3 or more acryloyl groups in the molecule, Component C of a silica sol in an organic solvent, and Component D of a photopolymerization initiator. This composition forms a coating film shows excellent hardwearing properties and adhesion to plastic substrates after ultraviolet-curing. Blending Component E of an acrylic resin and Component F of a solvent to the composition forms a coating film which can be processed before curing.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: January 3, 1995
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Noritaka Hosokawa, Kazuhide Hayama
  • Patent number: 5362485
    Abstract: A hair cosmetic composition containing a graft copolymer or an alternating block copolymer, each of which comprises a first unit containing a polysiloxane group and a second unit containing a polymer of unsaturated monomers is provided. The first and second units are linked by sulfide linkage. The hair cosmetic composition provides hair with softness, luster, combing smoothness, styling ease, enhanced volume, and has good hairstyle retainability and damage-restoring characteristics.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: November 8, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Kazuhide Hayama, Kanji Narazaki, Yukio Saitoh, Tomoaki Hiwatashi, Isao Itoh, Sigeoki Kawaguchi
  • Patent number: 5288360
    Abstract: An adhesive resin composition comprising a polymer of a radically polymerizable epoxy resin (I) and a monomer (c), the radically polymerizable epoxy resin (I) being a reaction product between an epoxy resin (a) and a radically polymerizable monomer (b) having a function group reactive to epoxy group or hydroxyl group in said epoxy resin (a), having an equivalent ratio (b)/(a)=0.01.about.0.9 and said monomer (c) being copolymerizable with said radically polymerizable epoxy resin (I) and containing alkyl (meth)acrylate and/or a fluorine-containing unsaturated monomer serving as an indispensable component. The adhesive resin composition has an excellent adhesion between fluorine-contained resins and metal substrates.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: February 22, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Kazuhide Hayama, Kazuyuki Hata, Keizo Abe, Takahiro Ozu
  • Patent number: 5234524
    Abstract: There is provided a process for preparing a laminate, comprising the step of adhering a layer of an olefin polymer and a layer of a fluororesin to each other by fusion with the aid of an adhesive polymer, the adhesive polymer being a polymerization product A prepared by copolymerizing a radical-polymerizable olefin polymer B, which is obtained by reacting an olefin polymer (a) having at least one functional group in one molecule thereof with a radical-polymerizable monomer (b) having a functional group which can react with the functional group contained in the olefin polymer (a), with a monomer (c) which comprises as essential components alkyl acrylate, alkyl methacrylate and/or a fluorine-containing unsaturated monomer and is copolymerizable with the radical-polymerizable olefin polymer B, the polymerization product A comprising from 10 to 90 wt. % of the monomer (c).
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: August 10, 1993
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Takahiro Ozu, Keizo Abe, Kazuhide Hayama, Kazuyuki Hata
  • Patent number: 5180766
    Abstract: A resin composition for primer use is described, which contains a copolymer of (I) a radical-polymerizable olefin resin and (c) a monomer copolymerizable with said olefin resin (I) and containing an alkyl (meth)acrylate and/or a fluorine-containing unsaturated monomer as essential ingredients, said radical-polymerizable olefin resin (I) being a product of the reaction of (a) an olefin resin having at least one functional group per molecule with (b) a radical-polymerizable monomer having a functional group reactive to the functional group contained in said olefin resin (a).A primer composition is also described.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: January 19, 1993
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Kazuhide Hayama, Kazuyuki Hata, Katsuhiko Yamada, Keizo Abe, Takahiro Ozu
  • Patent number: 5174848
    Abstract: A process for producing a propylene resin formed article with a hard coat is disclosed, comprising forming an ultraviolet-curing acrylic resin coating film on the surface of a propylene resin film or sheet, subjecting the film or sheet with the coating film to thermoforming, and irradiating the coating film to ultraviolet rays to cure said ultraviolet-curing resin, wherein said propylene resin film or sheet is composed of at least a propylene resin surface layer containing substantially no nucleating agent on which surface is coated said acrylic resin film and a thermoplastic resin base layer containing a nucleating agent which is laminated on the other side of said propylene resin surface layer prior to the thermoforming. The hard coat on the propylene resin formed article has high gloss.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: December 29, 1992
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Takao Yazaki, Masataka Noro, Takashi Matsui, Kazuhide Hayama, Noritaka Hosokawa