Patents by Inventor Katsuhiko Hironaka

Katsuhiko Hironaka 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: 8791192
    Abstract: There are provided a resin composition including a polylactic acid which (i) includes a poly-L-lactic acid (component B-1) and a poly-D-lactic acid (component B-4), (ii) has a weight ratio of the component B-1 to the component B-4 (component B-1/component B-4) of 10/90 to 90/10, and (iii) shows a proportion of melt peaks at 195° C. or higher to all melt peaks in a temperature rising process in measurement by a differential scanning calorimeter (DSC) of at least 20%; a molded article of the resin composition; and methods for producing the resin composition and the molded article.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: July 29, 2014
    Assignee: Teijin Limited
    Inventors: Katsuhiko Hironaka, Fumitaka Kondo, Keiichiro Ino, Yuichi Matsuno, Kiyotsuna Toyohara, Hirotaka Suzuki, Ryuji Nonokawa, Takaaki Matsuda
  • Patent number: 8604107
    Abstract: There is provided a resin composition that comprises a polycarbonate resin derived from an ether diol such as isosorbide and that is excellent in flame retardancy, heat resistance, thermal stability, rigidity, transparency and moldability. The resin composition is a flame-retardant resin composition comprising 1 to 60 parts by weight of phosphorus compound (component B) having a thermal decomposition temperature of not higher than 340° C.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 10, 2013
    Assignee: Teijin Limited
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
  • Publication number: 20130231435
    Abstract: There are provided a resin composition including a polylactic acid which (i) includes a poly-L-lactic acid (component B-1) and a poly-D-lactic acid (component B-4), (ii) has a weight ratio of the component B-1 to the component B-4 (component B-1/component B-4) of 10/90 to 90/10, and (iii) shows a proportion of melt peaks at 195° C. or higher to all melt peaks in a temperature rising process in measurement by a differential scanning calorimeter (DSC) of at least 20%; a molded article of the resin composition; and methods for producing the resin composition and the molded article.
    Type: Application
    Filed: April 18, 2013
    Publication date: September 5, 2013
    Applicants: TEIJIN LIMITED, TEIJIN CHEMICALS LTD.
    Inventors: Katsuhiko HIRONAKA, Fumitaka KONDO, Keiichiro INO, Yuichi MATSUNO, Kiyotsuna TOYOHARA, Hirotaka SUZUKI, Ryuji NONOKAWA, Takaaki MATSUDA
  • Patent number: 8106143
    Abstract: A resin composition includes a polycarbonate resin derived from an ether diol residue such as isosorbide and has excellent impact resistance, heat resistance, heat stability and moldability. The resin composition includes a rubber polymer (component B) in an amount of 1 to 30 parts by weight based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent and has a glass transition temperature (Tg) of 145 to 165° C. and a 5% weight loss temperature (Td) of 320 to 400° C.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: January 31, 2012
    Assignee: Teijin Limited
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
  • Patent number: 8034894
    Abstract: A terminal modified polycarbonate having a high content of biogenic matter, excellent heat resistance, heat stability, moldability and moist absorption resistance and high surface energy and a manufacturing process thereof are provided. The terminal modified polycarbonate has a main chain essentially composed of a recurring unit represented by the following formula (1): has a specific viscosity at 20° C. of a solution obtained by dissolving 0.7 g of the polycarbonate in 100 ml of methylene chloride of 0.2 to 0.5, and contains a terminal group represented by the following formula (2) or (3) in an amount of 0.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: October 11, 2011
    Assignee: Teijin Limited
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
  • Patent number: 8008381
    Abstract: An object of the present invention is to provide a polycarbonate resin composition which has a high content of biogenic matter and is excellent in heat resistance, heat stability, moldability, hue and transparency. The present invention relates to a resin composition including 0.0005 to 0.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: August 30, 2011
    Assignee: Teijin Limited
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka, Eiichi Kitazono, Akimichi Oda
  • Publication number: 20100227963
    Abstract: There are provided a resin composition comprising a polylactic acid which (i) comprises a poly-L-lactic acid (component B-1) and a poly-D-lactic acid (component B-4), (ii) has a weight ratio of the component B-1 to the component B-4 (component B-1/component B-4) of 10/90 to 90/10, and (iii) shows a proportion of melt peaks at 195° C. or higher to all melt peaks in a temperature rising process in measurement by a differential scanning calorimeter (DSC) of at least 20%; a molded article of the resin composition; and methods for producing the resin composition and the molded article.
    Type: Application
    Filed: January 17, 2007
    Publication date: September 9, 2010
    Applicants: TEIJIN CHEMICALS LTD., TEIJIN LIMITED
    Inventors: Katsuhiko Hironaka, Fumitaka Kondo, Keiichiro Ino, Yuichi Matsuno, Kiyotsuna Toyohara, Hirotaka Suzuki
  • Publication number: 20100184884
    Abstract: There is provided a resin composition that comprises a polycarbonate resin derived from an ether diol such as isosorbide and that is excellent in flame retardancy, heat resistance, thermal stability, rigidity, transparency and moldability. The resin composition is a flame-retardant resin composition comprising 1 to 60 parts by weight of phosphorus compound (component B) having a thermal decomposition temperature of not higher than 340° C. based on 100 parts by weight of polycarbonate resin (component A) that mainly comprises a recurring unit represented by the following formula (1).
    Type: Application
    Filed: May 28, 2008
    Publication date: July 22, 2010
    Applicant: TEIJIN LIMITED
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
  • Publication number: 20100160563
    Abstract: A resin composition comprising a polycarbonate resin derived from an ether diol residue such as isosorbide and has excellent impact resistance, heat resistance, heat stability and moldability. The resin composition comprises a rubber polymer (component B) in an amount of 1 to 30 parts by weight based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent and has a glass transition temperature (Tg) of 145 to 165° C. and a 5% weight loss temperature (Td) of 320 to 400° C.
    Type: Application
    Filed: May 16, 2008
    Publication date: June 24, 2010
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
  • Publication number: 20100105854
    Abstract: A terminal modified polycarbonate having a high content of biogenic matter, excellent heat resistance, heat stability, moldability and moist absorption resistance and high surface energy and a manufacturing process thereof. The terminal modified polycarbonate has a main chain essentially composed of a recurring unit represented by the following formula (1): has a specific viscosity at 20° C. of a solution obtained by dissolving 0.7 g of the polycarbonate in 100 ml of methylene chloride of 0.2 to 0.5, and contains a terminal group represented by the following formula (2) or (3) in an amount of 0.
    Type: Application
    Filed: March 5, 2008
    Publication date: April 29, 2010
    Applicant: TEIJIN LIMITED
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka
  • Publication number: 20100076130
    Abstract: An object of the present invention is to provide a polycarbonate resin composition which has a high content of biogenic matter and is excellent in heat resistance, heat stability, moldability, hue and transparency. The present invention related to a resin composition comprising 0.0005 to 0.5 part by weight of at least one heat stabilizer (component S) selected from the group consisting of phosphorus-based heat stabilizers (PS) and hindered phenol-based heat stabilizers (HS) based on 100 parts by weight of a polycarbonate resin (component A) which contains a recurring unit represented by the following formula (1) as the main constituent, and a molded article thereof.
    Type: Application
    Filed: April 23, 2008
    Publication date: March 25, 2010
    Inventors: Toshiyuki Miyake, Masami Kinoshita, Mizuho Saito, Katsuhiko Hironaka, Eiichi Kitazono, Akimichi Oda
  • Publication number: 20070155888
    Abstract: This invention aims at providing an aromatic polycarbonate resin composition having high elasticity with a small content of an inorganic filler and a process for the production thereof, and provides a process for the production of a resin composition comprising 100 parts by weight of an aromatic polycarbonate (Component A) and 0.
    Type: Application
    Filed: February 23, 2005
    Publication date: July 5, 2007
    Inventors: Koichi Imamura, Masaki Mitsunaga, Kunio Hatanaka, Katsuhiko Hironaka
  • Patent number: 7189796
    Abstract: An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance. The present invention is an aromatic polycarbonate resin composition comprising: (A) 100 parts by weight of aromatic polycarbonate (component A) (B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I): (wherein M represents a nitrogen atom or a phosphorus atom, R1 and R2 represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R3 and R4 represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other), (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and (D) 0.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: March 13, 2007
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Masaki Mitsunaga, Katsuhiko Hironaka
  • Patent number: 7098263
    Abstract: A thermoplastic resin composition comprising: (A) 100 parts by weight of a noncrystalline thermoplastic resin component (component A); (B) 0.1 to 50 parts by weight of a layered silicate (component B) which satisfies the following (i) to (iii): (i) it has a cation exchange capacity of 50 to 200 milliequivalents/100 g, and at least 40% of the cation exchange capacity being exchanged with an organic onium ion, (ii) 60% or more of the layered silicate particles have a thickness of 100 nm or less in the resin composition, and (iii) the interlayer spacing of the layered silicate (component B) in the resin composition is smaller than the interlayer spacing of the layered silicate alone by 0.5 nm or more; and (C) 0 to 50 parts by weight of a compound (component C) having affinity for the noncrystalline thermoplastic resin component as the component A and a hydrophilic component; and molded articles thereof.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: August 29, 2006
    Assignee: Teijin Chemicals, Ltd.
    Inventors: Masaki Mitsunaga, Katsuhiko Hironaka, Masami Okamoto
  • Publication number: 20050272903
    Abstract: An object of the present invention is to provide an aromatic polycarbonate resin composition having good rigidity and good hydrolysis resistance. The present invention is an aromatic polycarbonate resin composition comprising: (A) 100 parts by weight of aromatic polycarbonate (component A) (B) 0.1 to 20 parts by weight of layer silicate (component B) having 50 to 200 milliequivalents/100 g of cation exchange capacity and ion-exchanged by an organic onium ion represented by the following general formula (I): (wherein M represents a nitrogen atom or a phosphorus atom, R1 and R2 represent an alkyl group having 6 to 16 carbon atoms and may be the same as or different from each other, and R3 and R4 represent an alkyl group having 1 to 4 carbon atoms and may be the same as or different from each other), (C) 0.1 to 50 parts by weight of compound (component C) having an affinity for the component A and having a hydrophilic component, and (D) 0.
    Type: Application
    Filed: October 29, 2003
    Publication date: December 8, 2005
    Applicant: TEIJIN CHEMICALS LTD.
    Inventors: Masaki Mitsunaga, Katsuhiko Hironaka
  • Publication number: 20040030021
    Abstract: A thermoplastic resin composition comprising:
    Type: Application
    Filed: August 13, 2003
    Publication date: February 12, 2004
    Inventors: Masaki Mitsunaga, Katsuhiko Hironaka, Masami Okamoto
  • Patent number: 6627690
    Abstract: A flame-retardant composition comprising (A) 100 parts by weight of an aromatic polyester having a terminal carboxyl group concentration of 60 equivalents/ton or less; (B1) a specific brominated epoxy compound and (B2) a brominated polyacrylate in the amount of 5 to 50 parts by weight; (C) 2 to 20 parts by weight of antimony trioxide, and the (B1)/(B2) weight ratio being 5/95 to 95/5. The composition has superior excellent residence stability than a composition used for a brominated epoxy compound alone as a flame retardant.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: September 30, 2003
    Assignee: Teijin Limited
    Inventor: Katsuhiko Hironaka
  • Publication number: 20020128365
    Abstract: To provide a resin composition as a non-halogenated flame retardant resin composition, having a. high degree of flame retardant property, equipped with good electric characteristics by suppressing the generation of phosphoric acid, and improved in working environment and safety by using a flame retardant resin composition comprising (A) a thermoplastic aromatic polyester of 100 parts weight, (B) a coated red phosphorus powder consisting of an essentially spherical red phosphorus having a cured resin coating, directly obtained from a conversion treatment method of yellow phosphorus, not requiring a pulverization and without having crushed surfaces of 1 to 15 parts weight and (C) an aromatic polycarbonate of 5 to 150 parts weight.
    Type: Application
    Filed: October 22, 1999
    Publication date: September 12, 2002
    Inventors: MIOKO SUZUKI, KATSUHIKO HIRONAKA, JUN HARUHARA
  • Patent number: 6448308
    Abstract: To provide a resin composition as a non-halogenated flame retardant resin composition, having a high degree of flame retardant property, equipped with good electric characteristics by suppressing the generation of phosphoric acid, and improved in working environment and safety by using a flame retardant resin composition comprising (A) a thermoplastic aromatic polyester of 100 parts weight, (B) a coated red phosphorus powder consisting of an essentially spherical red phosphorus having a cured resin coating, directly obtained from a conversion treatment method of yellow phosphorus, not requiring a pulverization and without having crushed surfaces of 1 to 15 parts weight and (C) an aromatic polycarbonate of 5 to 150 parts weight.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: September 10, 2002
    Assignee: Teijin Limited
    Inventors: Mioko Suzuki, Katsuhiko Hironaka, Jun Haruhara
  • Patent number: 6248814
    Abstract: An aromatic polyester resin composition excellent in heat resistance, mechanical characteristics, flame retardant property and electric insulation property, and mainly used in electric/electronic uses is obtained by a resin composition comprising (A) an aromatic polyester of 100 parts weight, (B) red phosphorus and/or organic phosphorus compound of 1 to 20 parts weight based on phosphorus atom content and (C) at least one kind selected from a group consisting of zinc borate, zinc stannate and zinc oxide of 2 to 50 parts weight.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: June 19, 2001
    Assignee: Teijin Limited
    Inventors: Katsuhiko Hironaka, Mioko Suzuki