Patents by Inventor Teiji Kohara

Teiji Kohara 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: 9814792
    Abstract: A method is disclosed for producing a sterilized medical formed article that includes applying high-energy rays to a medical formed article at an exposure E. The medical formed article is formed of a resin composition that includes a hydrogenated block copolymer and a phenol-based antioxidant. The hydrogenated block copolymer is obtained by hydrogenating 99% or more of unsaturated bonds of a block copolymer that includes at least two polymer blocks [A] and at least one polymer block [B], the polymer block [A] including a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block [B] including a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block [A] to a weight fraction wB of the polymer block [B] being 30:70 to 70:30.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: November 14, 2017
    Assignee: ZEON CORPORATION
    Inventors: Teiji Kohara, Atsushi Ishiguro
  • Publication number: 20170291966
    Abstract: The present invention is a hydrogenated block copolymer obtained by hydrogenating a block copolymer [C] that comprises polymer blocks [A] and polymer block [B], a ratio (wA:wB) of a weight fraction wA of the polymer blocks [A] and a weight fraction wB of the polymer block [B] in the block copolymer [C] being 45:55 to 65:35, a ratio (w[IB]:w[IIB]) of a weight fraction w[IB] of the repeating unit [I] derived from an aromatic vinyl compound and a weight fraction w[IIB] of the repeating unit [II] derived from a linear conjugated diene compound in the polymer block [B] being 40:60 to 55:45, 90% of more of unsaturated bonds included in the block copolymer [C] having been hydrogenated, a weight average molecular weight of 60,000 to 150,000, a low-temperature-side glass transition temperature [Tg1] of 0° C. or more and a high-temperature-side glass transition temperature [Tg2] of 135° C. or more, and a stretched film.
    Type: Application
    Filed: October 8, 2015
    Publication date: October 12, 2017
    Applicant: ZEON CORPORATION
    Inventors: Daisuke SAITO, Yosuke HARAUCHI, Atsushi ISHIGURO, Teiji KOHARA
  • Publication number: 20170274632
    Abstract: A laminated glass may be obtained by integrally bonding glass sheets through an adhesive, the adhesive comprising a hydrogenated block copolymer obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer that is obtained by hydrogenating unsaturated bonds of a block copolymer that comprises at least two polymer blocks and at least one polymer block, the polymer block comprising a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block comprising a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block in the block copolymer to a weight fraction wB of the polymer block in the block copolymer being 30:70 to 60:40. The laminated glass may employ a block copolymer hydrogenation product comprising an alkoxysilyl group and excellent light-fastness, heat resistance, moisture resistance and transparency.
    Type: Application
    Filed: June 14, 2017
    Publication date: September 28, 2017
    Applicant: ZEON CORPORATION
    Inventors: Teiji KOHARA, Naoki TANAHASHI
  • Publication number: 20170151757
    Abstract: Provided is a laminated glass including, in order: a first glass sheet; a first interlayer film; a transparent film laminated with a heat reflection film; a second interlayer film; and a second glass sheet, wherein the first interlayer film and the second interlayer film are formed of a modified hydrogenated block copolymer [E], the modified hydrogenated block copolymer [E] is a hydrogenated block copolymer [D] in which an alkoxysilyl group is incorporated, the hydrogenated block copolymer [D] being a block copolymer [C] in which 90% or more of all unsaturated bonds is hydrogenated, the block copolymer [C] is composed of at least two polymer blocks [A] including a repeat unit derived from an aromatic vinyl compound, and at least one polymer block [B] including a repeat unit derived from a linear conjugated diene compound, and the ratio of weight fraction [A]:[B] is 30:70 to 60:40.
    Type: Application
    Filed: July 7, 2015
    Publication date: June 1, 2017
    Applicant: ZEON CORPORATION
    Inventors: Teiji KOHARA, Daido CHIBA
  • Publication number: 20170058148
    Abstract: The present invention is a transparent pressure-sensitive adhesive sheet that is formed of a resin composition [F], and has a storage modulus at 25° C. of 1×106 to 1×108 Pa, the resin composition [F] comprising a modified hydrogenated block copolymer [E] as a main component, the modified hydrogenated block copolymer [E] being obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer [D], the hydrogenated block copolymer [D] being obtained by hydrogenating 90% or more of unsaturated bonds of a block copolymer [C] that comprises at least two polymer blocks [A] comprising a specific compound and at least one polymer block [B] comprising a specific compound, and a ratio (wA:wB) of a total weight fraction wA of the polymer block [A] in the block copolymer [C] to a total weight fraction wB of the polymer block [B] in the block copolymer [C] being 20:80 to 60:40.
    Type: Application
    Filed: February 24, 2015
    Publication date: March 2, 2017
    Applicant: ZEON CORPORATION
    Inventors: Atsushi ISHIGURO, Daisuke SAITOU, Teiji KOHARA
  • Publication number: 20170037157
    Abstract: Provided are: an alkoxysilyl group-containing hydrogenated block copolymer produced by introducing an alkoxysilyl group into a hydrogenated block copolymer that is obtained by hydrogenating 90% or more of unsaturated bonds of a block copolymer that includes at least two polymer blocks [A] and at least one polymer block [B], the polymer block [A] including a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block [B] including a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block [A] in the block copolymer to a weight fraction wB of the polymer block [B] in the block copolymer being 20:80 to 60:40; a method for producing the same; a solar cell element encapsulating material; a sheet; a laminated sheet; a multilayer sheet; and a method for encapsulating a solar cell element.
    Type: Application
    Filed: October 21, 2016
    Publication date: February 9, 2017
    Applicant: ZEON CORPORATION
    Inventors: Teiji Kohara, Atsushi Ishiguro, Ryuta Kurihara
  • Publication number: 20160213796
    Abstract: A method is disclosed for producing a sterilized medical formed article that includes applying high-energy rays to a medical formed article at an exposure E. The medical formed article is formed of a resin composition that includes a hydrogenated block copolymer and a phenol-based antioxidant. The hydrogenated block copolymer is obtained by hydrogenating 99% or more of unsaturated bonds of a block copolymer that includes at least two polymer blocks [A] and at least one polymer block [B], the polymer block [A] including a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block [B] including a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block [A] to a weight fraction wB of the polymer block [B] being 30:70 to 70:30.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 28, 2016
    Applicant: ZEON CORPORATION
    Inventors: Teiji KOHARA, Atsushi ISHIGURO
  • Publication number: 20160146977
    Abstract: An optical film includes a hydrogenated block copolymer-[2] obtained by hydrogenating 90% or more of unsaturated bonds of block copolymer-[1] that includes at least two polymer blocks-[A] and at least one polymer block-[B], the polymer block-[A] including a repeating unit derived from an aromatic vinyl compound as main component, the polymer block-[B] including repeating unit derived from a linear conjugated diene compound as main component, ratio (wA:wB) of weight fraction wA of the polymer block-[A] in block copolymer-[1] to weight fraction wB of polymer block-[B] in block copolymer-[1] being 40:60 to 80:20, height from peak of ridge of a die line is formed in longitudinal direction of the optical film to a valley bottom point that is contiguous to the ridge being 100 nm or less over the optical film entire surface, and slope of the die line being 300 nm/mm or less over the optical film entire surface.
    Type: Application
    Filed: June 24, 2014
    Publication date: May 26, 2016
    Applicant: ZEON CORPORATION
    Inventors: Atsushi ISHIGURO, Daisuke SAITO, Teiji KOHARA
  • Publication number: 20160013342
    Abstract: A solar cell module including at least a front-side transparent glass, a sealing material layer that includes an ethylene-vinyl acetate copolymer having a vinyl acetate content of 20 to 35 wt % as a main component, a crystalline silicon solar cell element that is embedded in the sealing material, and a back-side protective layer that is formed of a resin sheet or glass, the front-side transparent glass, the sealing material layer, the crystalline silicon solar cell element, and the back-side protective layer being stacked sequentially from a light-receiving side, a layer that is formed of a transparent resin and bonded to the front-side transparent glass being formed between the front-side transparent glass and the sealing material layer. This solar cell module is capable of suppressing the occurrence of PID using a sealing material formed of a general-purpose ethylene-vinyl acetate copolymer.
    Type: Application
    Filed: February 26, 2014
    Publication date: January 14, 2016
    Applicant: ZEON CORPORATION
    Inventors: Yohei KOIDE, Daido CHIBA, Teiji KOHARA
  • Publication number: 20150104654
    Abstract: A laminated glass may be obtained by integrally bonding glass sheets through an adhesive, the adhesive comprising a hydrogenated block copolymer obtained by introducing an alkoxysilyl group into a hydrogenated block copolymer that is obtained by hydrogenating unsaturated bonds of a block copolymer that comprises at least two polymer blocks and at least one polymer block, the polymer block comprising a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block comprising a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block in the block copolymer to a weight fraction wB of the polymer block in the block copolymer being 30:70 to 60:40. The laminated glass may employ a block copolymer hydrogenation product comprising an alkoxysilyl group and excellent light-fastness, heat resistance, moisture resistance and transparency.
    Type: Application
    Filed: May 24, 2013
    Publication date: April 16, 2015
    Inventors: Teiji Kohara, Naoki Tanahashi
  • Patent number: 8685510
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer obtained by ring-opening polymerization of 2-norbornene. The hydrogenated norbornene ring-open polymer has a weight average molecular weight determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution of 1.5 to 10.0, and a melting point of 110 to 145° C. A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. A resin composition and a molding material.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: April 1, 2014
    Assignee: Zeon Corporation
    Inventors: Haruhiko Takahashi, Teiji Kohara
  • Publication number: 20130244367
    Abstract: Provided are: an alkoysilyl group-containing hydrogenated block copolymer produced by introducing an alkoxysilyl group into a hydrogenated block copolymer that is obtained by hydrogenating 90% or more of unsaturated bonds of a block copolymer that includes at least two polymer blocks [A] and at least one polymer block [B], the polymer block [A] including a repeating unit derived from an aromatic vinyl compound as a main component, the polymer block [B] including a repeating unit derived from a linear conjugated diene compound as a main component, and a ratio (wA:wB) of a weight fraction wA of the polymer block [A] in the block copolymer to a weight fraction wB of the polymer block [B] in the block copolymer being 20:80 to 60:40; a method for producing the same; a solar cell element encapsulating material; a sheet, a laminated sheet; a multilayer sheet; and a method for encapsulating a solar cell element.
    Type: Application
    Filed: September 29, 2011
    Publication date: September 19, 2013
    Applicant: ZEON CORPORATION
    Inventors: Teiji Kohara, Atsushi Ishiguro, Ryuta Kurihara
  • Patent number: 8481166
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer obtained by ring-opening polymerization of 2-norbornene. The hydrogenated norbornene ring-open polymer has a weight average molecular weight determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution of 1.5 to 10.0, and a melting point of 110 to 145° C. A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. A resin composition and a molding material.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 9, 2013
    Assignee: Zeon Corporation
    Inventors: Haruhiko Takahashi, Teiji Kohara, Nobuhiro Kudo, Koichi Ikeda, Tokudai Ogawa, Takeshi Hirata
  • Publication number: 20130008506
    Abstract: A resin composition comprising a hydrogenated block copolymer which is used for a resin composition for encapsulating a solar cell is provided. The hydrogenated block copolymer can be obtained by hydrogenating 90% or more of the total unsaturated bonds of block copolymers which comprise at least two polymer blocks [A] having an aromatic vinyl compound-origin repeating unit as the main component and at least one polymer block [B] comprising a chain-type conjugated diene compound-origin repeating unit as the main component and in which the ratio (wA:wB) of the weight fraction (wA) of the total polymer blocks [A], relative to the total block copolymer, to the weight fraction (wB) of the total polymer block [B] is 20:80 to 60:40. The resin composition has a tensile elasticity (at 23° C.) of 1.
    Type: Application
    Filed: February 1, 2011
    Publication date: January 10, 2013
    Applicant: ZEON CORPORATION
    Inventors: Naoki Tanahashi, Teiji Kohara
  • Publication number: 20120208950
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer obtained by ring-opening polymerization of 2-norbornene. The hydrogenated norbornene ring-open polymer has a weight average molecular weight determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution of 1.5 to 10.0, and a melting point of 110 to 145° C. A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. A resin composition and a molding material.
    Type: Application
    Filed: December 23, 2011
    Publication date: August 16, 2012
    Applicant: ZEON CORPORATION
    Inventors: Haruhiko Takahashi, Teiji Kohara, Nobuhiro Kudo, Koichi Ikeda, Tokudai Ogawa, Takeshi Hirata
  • Publication number: 20120171398
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer obtained by ring-opening polymerization of 2-norbornene. The hydrogenated norbornene ring-open polymer has a weight average molecular weight determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution of 1.5 to 10.0, and a melting point of 110 to 145° C. A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. A resin composition and a molding material.
    Type: Application
    Filed: December 23, 2011
    Publication date: July 5, 2012
    Applicant: ZEON CORPORATION
    Inventors: Haruhiko TAKAHASHI, Teiji KOHARA, Nobuhiro KUDO, Koichi IKEDA, Tokudai OGAWA, Takeshi HIRATA
  • Publication number: 20120165461
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer obtained by ring-opening polymerization of 2-norbornene. The hydrogenated norbornene ring-open polymer has a weight average molecular weight determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution of 1.5 to 10.0, and a melting point of 110 to 145° C. A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. A resin composition and a molding material.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Applicant: ZEON CORPORATION
    Inventors: Haruhiko TAKAHASHI, Teiji KOHARA, Nobuhiro Kudo, Koichi Ikeda, Tokudai Ogawa, Takeshi Hirata
  • Publication number: 20120164465
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer obtained by ring-opening polymerization of 2-norbornene. The hydrogenated norbornene ring-open polymer has a weight average molecular weight determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution of 1.5 to 10.0, and a melting point of 110 to 145° C. A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of carbon-carbon double bonds of a ring-open polymer obtained by ring-opening copolymerization of 2-norbornene and a substituent-containing norbornene monomer, wherein the proportion of a repeating unit (A) derived from the 2-norbornene with respect to all repeating units is 90 to 99 wt % and the proportion of a repeating unit (B) derived from the substituent-containing norbornene monomer with respect to all repeating units is 1 to 10 wt %. A resin composition and a molding material.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Applicant: ZEON CORPORATION
    Inventors: Haruhiko Takahashi, Teiji Kohara, Nobuhiro Kudo, Koichi Ikeda, Tokudai Ogawa, Takeshi Hirata
  • Publication number: 20100076396
    Abstract: A hydrogenated norbornene ring-open polymer obtained by hydrogenating 80% or more of main-chain carbon-carbon double bonds of a ring-open polymer which is obtained by ring-opening polymerization of 2-norbornene is disclosed. The hydrogenated norbornene ring-open polymer has a weight average molecular weight (Mw) determined by gel permeation chromatography (GPC) of 50,000 to 200,000, a molecular weight distribution (Mw/Mn) of 1.5 to 10.0, and a melting point of 110 to 145° C.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 25, 2010
    Applicant: ZEON CORPORATION
    Inventors: Haruhiko Takahashi, Teiji Kohara, Nobuhiro Kudo, Koichi Ikeda, Tokudai Ogawa, Takeshi Hirata
  • Patent number: 6883938
    Abstract: A lighting equipment comprising a reflector having a substrate comprised of a thermoplastic resin containing an alicyclic structure on which is formed a reflecting layer having a reflectance of at least 70%. The reflecting layer of the reflector is preferably comprised of a metal. The reflecting layer preferably has a thickness of 5 to 10,000 nm. The amount of the repeating units containing polar groups in the thermoplastic resin containing an alicyclic structure is preferably not more than 50 wt %. The thermoplastic resin containing an alicyclic structure preferably has a melt flow rate of 4 to 100 g/10 min.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: April 26, 2005
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Teiji Kohara, Yuichiro Konishi, Junko Maruyama