Patents Assigned to Unitika Ltd.
  • METHOD FOR PRODUCING POLYAMIDE RESIN
    Publication number: 20130338333
    Abstract: The present invention is a method for producing a polyamide resin, wherein a nylon salt obtained from a dicarboxylic acid and a diamine having a boiling point exceeding 100° C. is heated to be polymerized under normal pressure while water vapor is being allowed to be present in the polymerization reaction system.
    Type: Application
    Filed: February 29, 2012
    Publication date: December 19, 2013
    Applicant: UNITIKA LTD.
    Inventors: Makoto Nakai, Mariko Morimoto
  • Polylactic acid resin composition and molded item
    Patent number: 8586658
    Abstract: Provided is a polylactic acid resin composition obtained by adding a carboxylic acid amide and a carboxylic acid ester each of which has at least one polar group in a molecule to a polylactic acid resin reacted with a (meth)acrylate compound. Also provided is a polylactic acid resin molded article which is a molded article obtained by molding the polylactic acid resin composition, manufactured by setting a mold temperature to a glass transition temperature of a polylactic acid resin plus 20° C. or higher and a melting point thereof minus 20° C. or lower, at the time of injection molding the polylactic acid resin composition. Thus, a resin composition in which a moldability is improved at a temperature at which a polylactic acid resin is crystallized, and a molded article therefrom are provided.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: November 19, 2013
    Assignees: NEC Corporation, Unitika, Ltd.
    Inventors: Shin Serizawa, Tsunenori Yanagisawa, Kazuhiko Inou, Masatoshi Iji, Yohei Kabashima, Kazue Ueda, Hiroo Kamikawa, Norio Fukawa
  • POLYESTER FILM AND PHOTOSENSITIVE RESIN STRUCTURE
    Publication number: 20130295382
    Abstract: The present invention provides a polyester film wherein an adhesive layer including a thermoplastic elastomer including a monovinyl substituted aromatic hydrocarbon and a conjugated diene, a compatibilizer having a glass transition temperature of 35 to 150° C., and a polyester resin having a glass transition temperature of 35 to 150° C. and a carboxyl group content of 10 to 100 mg KOH/g is laminated on a polyester substrate.
    Type: Application
    Filed: January 13, 2012
    Publication date: November 7, 2013
    Applicant: UNITIKA LTD.
    Inventors: Kiwamu Yuki, Kazuyoshi Yamazawa
  • Release sheet
    Patent number: 8535774
    Abstract: Disclosed is a release sheet including a substrate and a resin layer formed on the substrate. The resin layer includes: 100 parts by mass of an acid-modified polyolefin resin including an acid-modifying component in a content of 1 to 10% by mass; and 1 to 50 parts by mass of a crosslinking agent and/or 5 to 1000 parts by mass of polyvinyl alcohol. The crosslinking agent is composed of a carbodiimide compound and/or an oxazoline compound.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: September 17, 2013
    Assignee: Unitika Ltd.
    Inventors: Nobuyasu Okumura, Masafumi Yamada, Kenjin Shiba
  • FABRIC HAVING A FOAMED LAYER AND A METHOD FOR PRODUCING THEREOF
    Publication number: 20130228281
    Abstract: It is prepared to be an elastic net which is elastic in the cross machine direction and non-elastic in the machine direction. A combined sheet is obtained by joining the net and a filamentous web. The filamentous web comprises of drawn thermoplastic continuous filaments which are oriented in a machine direction. A laminated web is obtained by laying a fibrous web of staple fibers on the combined sheet. A high-pressure liquid flow is applied to the laminated web. The staple fibers are entangled among, and with the net. A method for producing a pressure-sensitive adhesive tape or sheet.
    Type: Application
    Filed: September 9, 2011
    Publication date: September 5, 2013
    Applicants: JX NIPPON ANCI CORPORATION, UNITIKA LTD.
    Inventors: Atsushi Miyagawa, Hideo Kumehara, Shigehisa Nakazawa, Atsushi Matsunaga, Noriko Yoshida, Nobuyuki Takawa
  • SEMI-AROMATIC POLYAMIDE FILM, AND PROCESS FOR PRODUCTION THEREOF
    Publication number: 20130231424
    Abstract: A semi-aromatic polyamide film including a semi-aromatic polyamide resin including a dicarboxylic acid mainly composed of terephthalic acid and a diamine mainly composed of an aliphatic diamine having 9 carbon atoms, wherein a number density of fish-eyes of 0.01 mm2 or more in size present in the film is 100/1000 cm2 or less.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 5, 2013
    Applicants: KURARAY CO., LTD., UNITIKA LTD.
    Inventors: Arihiro Anada, Kozo Tamura, Yuji Munesawa
  • Polyimide resin composition, polyimide precursor resin composition for the same, production method thereof, and polyimide film and production method thereof
    Patent number: 8492506
    Abstract: An object of the present invention, which was made to solve the problems above, is to provide a polyimide precursor resin composition superior in transparency allowing reduction of the residual volatile material rate during molding and giving a polyimide resin composition (e.g., polyimide film) superior in mechanical properties and transparency even when a cheaper polyamide-imide is used.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: July 23, 2013
    Assignee: Unitika Ltd.
    Inventors: Takeshi Yoshida, Akira Shigeta, Yoshiaki Echigo
  • METHOD FOR PRODUCING NYLON SALT POWDER, AND METHOD FOR PRODUCING NYLON
    Publication number: 20130172521
    Abstract: Disclosed is a method for producing a nylon salt powder, wherein in the production of a nylon salt powder by allowing a dicarboxylic acid powder to react, the content of water is regulated to be 5% by mass or less in relation to the total amount of the dicarboxylic acid powder and a diamine, the dicarboxylic acid powder is beforehand heated to a temperature equal to or higher than melting point of the diamine and equal to or lower than the melting point of the dicarboxylic acid, and while this heating temperature is being maintained, the diamine is added to the dicarboxylic acid powder in such a way that the dicarboxylic acid powder maintains the condition of being in powder form.
    Type: Application
    Filed: November 17, 2011
    Publication date: July 4, 2013
    Applicant: UNITIKA LTD.
    Inventors: Makoto Nakai, Mariko Morimoto, Mitsuhiro Kawahara
  • Polylactic acid-based resin composition, molded article and polylactic acid-based master batch pellets
    Patent number: 8466233
    Abstract: A polylactic acid-based resin composition including a polylactic acid (A), a multilayered polymer (B) and a multilayered polymer (C), wherein the content of each of the multilayered polymer (B) and the multilayered polymer (C) is 0.5 to 8% by mass of the whole resin composition; the multilayered polymer (B) and the multilayered polymer (C) are each constituted of a core layer(s) and a shell layer(s); the core layer constituting the multilayered polymer (B) contains an acrylic rubber; and the core layer constituting the multilayered polymer (C) contains a composite rubber containing an acrylic component and a silicone component.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: June 18, 2013
    Assignee: Unitika Ltd.
    Inventors: Keisuke Kimura, Kazue Ueda
  • Resin composition, and molded article produced from the same
    Patent number: 8415008
    Abstract: Disclosed is a resin composition including a polylactic acid resin (A) and a polycarbonate resin (B) and a molded article produced by molding the resin composition. The mass ratio (A/B) between the resins (A) and (B) is 40/60 to 80/20. The ratio (MFRA/MFRB) between the melt flow rate (MFRA) of the polylactic acid resin (A) and the melt flow rate (MFRB) of the polycarbonate resin (B) at 240° C. under a load of 21.2 N is 20 to 600. The polycarbonate resin (B) is particle-dispersed in island shapes in the polylactic acid resin (A) in a range from a surface of the molded article to a depth of 5 ?m and lengths of cross sections of dispersed particles observed in a cross section of the molded article are 0.1 ?m or more.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: April 9, 2013
    Assignee: Unitika Ltd.
    Inventors: Akira Ito, Kazue Ueda, Tatsuya Matsumoto, Tatsunori Masaki, Kiyohiko Yamamura
  • POLYAMIDE RESIN COMPOSITION AND METHOD FOR PRODUCING POLYAMIDE RESIN COMPOSITION
    Publication number: 20130030090
    Abstract: Disclosed is a polyamide resin composition including 0.01 to 50 parts by mass of cellulose fiber having an average fiber diameter of 10 ?m or less in relation to 100 parts by mass of a polyamide resin. Also disclosed is a method for producing the polyamide resin composition, wherein the monomer constituting the polyamide resin and an aqueous dispersion of the cellulose fiber having an average fiber diameter of 10 ?m or less are mixed and the resulting mixture is subjected to a polymerization reaction.
    Type: Application
    Filed: April 6, 2011
    Publication date: January 31, 2013
    Applicant: UNITIKA LTD.
    Inventors: Miho Nakai, Keisuke Kimura
  • SEMIAROMATIC POLYAMIDE AND METHOD FOR PRODUCING SAME
    Publication number: 20130018166
    Abstract: The semiaromatic polyamide of the present invention includes a terephthalic acid component and a diamine component, wherein the diamine component is any of 1,8-octanediamine, 1,10-decanediamine and 1,12-dodecanediamine, and the proportion of the triamine unit in relation to the diamine unit in the polyamide is 0.3 mol % or less.
    Type: Application
    Filed: March 15, 2011
    Publication date: January 17, 2013
    Applicant: UNITIKA LTD.
    Inventors: Makoto Nakai, Mariko Morimoto, Hirotaka Takeda
  • Easy adhesion film
    Patent number: 8309217
    Abstract: Disclosed is an easy adhesion film which attains sufficient adhesiveness in various processings without using any crosslinking agent such as a melamine resin to possibly pollute the environment and has a primer layer excellent in high-temperature hot water resistance. In the easy adhesion film, a coating film including a polyester resin and a crosslinking agent component in a content of 0.1% by mass or less, inclusive of 0% by mass, is formed on at least one side of a substrate film. The sum of the acid number and the hydroxyl number of the polyester resin is 50 to 200 mg KOH/g, wherein the acid number is 20 to 60 mg KOH/g and the hydroxyl number is 30 to 150 mg KOH/g. The amount of the oligomers contained in the polyester is 2.0% by mass or less. The thickness of the coating film is 0.001 to 0.5 ?m.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: November 13, 2012
    Assignee: Unitika Ltd.
    Inventors: Takayoshi Okuzu, Hideki Kuwata
  • ORAL ADMINISTRATION COMPOSITION
    Publication number: 20120282358
    Abstract: A composition which has high safety and is excellent in the effect of reducing body fat, such as visceral fat, subcutaneous fat and the like, and neutral fat, and a food, a pharmaceutical and a feed comprising the same, are provided. An oral administration composition having a body fat reducing action and/or a neutral fat reducing action, which is a composition comprising a carotenoid and a sphingolipid or a carotenoid and a flavonoid and/or a derivative thereof, preferably a composition comprising a cryptoxanthin and a sphingolipid or a cryptoxanthin and a flavonoid and/or a derivative thereof, wherein the cryptoxanthin and/or the sphingolipid and/or the flavonoid are derived from a citrus fruit and the citrus fruit is preferably Citrus unshiu.
    Type: Application
    Filed: July 17, 2012
    Publication date: November 8, 2012
    Applicant: UNITIKA LTD.
    Inventors: Katsuyuki MUKAI, Yoshiyuki SHIRAKURA
  • Biaxially stretched polyamide resin film, and process for production thereof
    Patent number: 8293160
    Abstract: At an optional stage in the production step of a biaxially stretched film using a polyamide resin including, as a first component, nylon 6, and as a second component, a polyamide including xylylenediamine and an aliphatic dicarboxylic acid having 4 to 12 carbon atoms, the film is brought into contact with water set at 40° C. or higher and lower than 70° C. for 1 to 10 minutes and further with water set at 70° C. or higher for 1 to 10 minutes. In the film thus obtained, the content of low molecular weight compounds is 0% by mass to 0.2% by mass.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: October 23, 2012
    Assignee: Unitika Ltd.
    Inventors: Kiwamu Yuki, Makoto Nakai, Atsuko Noda
  • RESIN COMPOSITION AND MOLDED ARTICLE MADE OF THE SAME
    Publication number: 20120248381
    Abstract: A resin composition of a polyarylate resin (A), a polycarbonate resin (B) and an acrylonitrile-styrene copolymer (C), wherein the mass proportions of the components simultaneously satisfy the following condition (I) and the following formula (II): a mass proportion of (A) is 30% by mass or more??(I); (C)/[(A)+(B)+(C)]=5/100 to 30/100??(II).
    Type: Application
    Filed: March 23, 2012
    Publication date: October 4, 2012
    Applicant: UNITIKA LTD.
    Inventors: Takehito SAIJO, Hiroo KAMIKAWA
  • Crystalline polylactic acid resin composition and product molded/formed therefrom
    Patent number: 8268918
    Abstract: There is provided a crystalline polylactic acid resin composition comprising 95 to 99.97 parts by mass of a polylactic acid resin (A) having a D-isomer content of not greater than 0.6 mol % or not less than 99.4 mol %, and 0.03 to 5 parts by mass of a crystal nucleus agent (B). There is also provided a crystalline polylactic acid resin composition prepared by melt-kneading 100 parts by mass of a polylactic acid resin (A) having a D-isomer content of not greater than 0.6 mol % or not less than 99.4 mol %, 0.01 to 20 parts by mass of a (meth)acrylate compound (C), and 0.02 to 20 parts by mass of a peroxide (D).
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: September 18, 2012
    Assignee: Unitika Ltd.
    Inventors: Norio Fukawa, Yohei Kabashima, Ken-ichi Kawada, Sachiko Kokuryo
  • POLYLACTIC ACID-BASED RESIN COMPOSITION, MOLDED ARTICLE AND POLYLACTIC ACID-BASED MASTER BATCH PELLETS
    Publication number: 20120232220
    Abstract: A polylactic acid-based resin composition including a polylactic acid (A), a multilayered polymer (B) and a multilayered polymer (C), wherein the content of each of the multilayered polymer (B) and the multilayered polymer (C) is 0.5 to 8% by mass of the whole resin composition; the multilayered polymer (B) and the multilayered polymer (C) are each constituted of a core layer(s) and a shell layer(s); the core layer constituting the multilayered polymer (B) contains an acrylic rubber; and the core layer constituting the multilayered polymer (C) contains a composite rubber containing an acrylic component and a silicone component.
    Type: Application
    Filed: November 29, 2010
    Publication date: September 13, 2012
    Applicant: Unitika Ltd.
    Inventors: Keisuke Kimura, Kazue Ueda
  • Coating material for forming gas-barrier layer and gas-barrier multilayer body
    Patent number: 8247068
    Abstract: Disclosed is a coating material for forming a gas barrier. The coating material includes a polyalcohol polymer, a polycarboxylic acid polymer, and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component, or alternatively a monovalent metal compound whose surface is coated with a poorly water-soluble component and a divalent or higher-valent metal compound whose surface is coated with a poorly water-soluble component. By applying this coating material to a plastic substrate layer, a gas-barrier multilayer body having a gas-barrier layer formed thereon is obtained.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: August 21, 2012
    Assignees: Unitika Ltd., Toyo Ink Manufacturing Co., Ltd.
    Inventors: Takayoshi Okuzu, Hideki Kuwata, Mitsuo Yoshida, Junji Okamoto, Kunihiko Ozaki, Miyuki Kamoshita, Reiko Ueno
  • Flame-retardant glass fiber-reinforced polyamide resin composition
    Patent number: 8193263
    Abstract: A flame-retardant glass fiber-reinforced polyamide resin composition, containing: 100 parts by mass of a flame-retardant resin composition consisting of (A) 60 to 90 percent by mass of a polyamide resin, and (B) 40 to 10 percent by mass of a flame retardant containing no halogen atom, (A)+(B) being 100 percent by mass; and 60 to 210 parts by mass of a flattened glass fiber (C) having a flat section of 1.5-10 in a ratio of major axis/minor axis, wherein the polyamide resin (A) contains a crystalline polyamide resin (a1) and an amorphous polyamide resin (a2), the flame retardant containing no halogen atom (B) contains a phosphinate (b1) and/or a diphosphinate (b2), and a blending ratio of the amorphous polyamide resin (a2) in the polyamide resin (A) is 0.1?(a2)/(A)?0.5.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: June 5, 2012
    Assignee: Unitika Ltd.
    Inventor: Shigeta Fujii