Patents Assigned to Unitika Ltd.
  • Patent number: 9109094
    Abstract: Disclosed is a highly adhesive polyester film having a highly adhesive primer layer disposed on at least one side of a substrate polyester film. The substrate polyester film is a stretched film having linear tearability and formed of a mixed polyester resin containing polyethylene terephthalate and a modified polybutylene terephthalate, and the highly adhesive primer layer contains a polyester resin (A) having an acid number of 20 to 60 mg KOH/g and a hydroxyl number of 30 to 150 mg KOH/g, and having an oligomer content of 2.0% by mass or less, and substantially contains no crosslinking agent component.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: August 18, 2015
    Assignee: Unitika, Ltd.
    Inventors: Atsuko Noda, Takayoshi Okuzu, Hideki Kuwata, Kiwamu Yuki
  • Publication number: 20150184014
    Abstract: Disclosed is a multilayer film including a resin layer formed at least on one surface of a biaxially stretched film, the resin layer including an acid-modified polyolefin resin (A), a polyurethane resin (B), a cross-linking agent (C) and an acetylene glycol-based surfactant (D), wherein the cross-linking agent (C) includes a melamine-based cross-linking agent (C1) and/or an oxazoline-based cross-linking agent (C2); the mass ratio ((A)/(B)) between (A) and (B) is 60/40 to 97/3; and the total amount of (C1) and (C2) is 1 to 20 parts by mass, or the amount of (C1) as a single substance and the amount of (C2) as a single substance are each 1 to 20 parts by mass, and the amount of (D) is 5 to 50 parts by mass in relation to 100 parts by mass of the total amount of (A) and (B).
    Type: Application
    Filed: August 2, 2013
    Publication date: July 2, 2015
    Applicant: UNITIKA LTD.
    Inventor: Jun-ichi Nakahara
  • Publication number: 20150183204
    Abstract: A polyester film for cold forming including polybutylene terephthalate (PBT) and polyethylene terephthalate (PET), wherein a mass ratio (PBT/PET) between PET and PET is 30/70 to 80/20.
    Type: Application
    Filed: July 23, 2013
    Publication date: July 2, 2015
    Applicant: UNITIKA LTD.
    Inventors: Kazunari Nanjo, Toshiya Hamada, Masami Matsumoto
  • Publication number: 20150175742
    Abstract: The polyarylate resin of the present invention includes a bisphenol residue represented by the general formula (1) and an aromatic dicarboxylic acid residue represented by the general formula (2). In formula (1), R1 and R2 each independently represent a hydrocarbon group having 1 to 6 carbon atoms, a halogenated alkyl group or a halogen atom, p and q each independently represent an integer of 0 to 4, and X represents a fluorine atom-containing divalent group. In formula (2), R3 and R4 each independently represent a hydrocarbon group having 1 to 6 carbon atoms, a halogenated alkyl group or a halogen atom, and r and s each independently represent an integer of 0 to 4.
    Type: Application
    Filed: August 2, 2013
    Publication date: June 25, 2015
    Applicant: UNITIKA LTD.
    Inventors: Chiho Matsumoto, Takamasa Akizuki
  • Patent number: 9045591
    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: Grant
    Filed: November 17, 2011
    Date of Patent: June 2, 2015
    Assignee: UNITIKA LTD.
    Inventors: Makoto Nakai, Mariko Morimoto, Mitsuhiro Kawahara
  • Publication number: 20150147584
    Abstract: Fibrous copper microparticles having a minor axis of 1 ?m or less and an aspect ratio of 10 or more, wherein the content of the copper particles having a minor axis of 0.3 ?m or more and an aspect ratio of 1.5 or less is 0.1 or less copper particle per one fibrous copper microparticle.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 28, 2015
    Applicant: UNITIKA LTD.
    Inventors: Munenori Yamada, Kou Takeuchi, Mutsumi Matsushita, Akira Shigeta, Masahiro Hosoda, Yoshiaki Echigo
  • Publication number: 20150140348
    Abstract: Disclosed is an adhesive for packaging materials being in a form of an aqueous dispersion including an acid-modified polyolefin resin containing a (meth)acrylic acid ester component, polyvinyl alcohol and an aqueous medium, wherein the content of polyvinyl alcohol is 0.1 to 10 parts by mass in relation to 100 parts by mass of the acid-modified polyolefin resin. Also disclosed is a packaging material using the adhesive wherein a barrier layer, an adhesive layer formed of a coating film obtained from the adhesive, and a sealant layer are laminated in this order.
    Type: Application
    Filed: June 19, 2013
    Publication date: May 21, 2015
    Applicant: UNITIKA LTD.
    Inventors: Kenjin Shiba, Takamasa Yoshino, Takuma Yano
  • Patent number: 9034988
    Abstract: A resin composition includes a copolymerized polyester resin, which exhibits excellent flexibility at room temperature, improvement in problems of brittleness, and excellent adhesiveness and moist-heat durability. The invention relates to a resin composition containing a copolymerized polyester resin which contains, as an acid component, an aromatic dicarboxylic acid and a dimer acid and, as a glycol component 1,4-butane diol and polybutadiene glycols, with the content of the dimer acid being 10 to 50 mol % in the acid component, the content of the 1,4-butane diol being 50 mol % or greater in the glycol component, and the content of the polybutadiene glycols being 0.5 to 20 mol % in the glycol component.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: May 19, 2015
    Assignees: UNITIKA LTD., NIPPON ESTER CO., LTD.
    Inventors: Motoki Tomizawa, Takao Okochi, Tomoki Tanaka, Naomi Kida, Yuji Oida
  • Publication number: 20150069651
    Abstract: Disclosed is a production method for an easy adhesion polyamide film including a substrate polyamide film and a primer layer containing an anionic water-dispersible polyurethane resin, formed on at least one side of the substrate polyamide film. The thickness of the primer layer is 0.025 ?m or more and 0.250 ?m or less. The anionic water-dispersible polyurethane resin has a coating film elongation percentage of 250% or more and a tensile strength of 20 MPa ox more. When the easy adhesion polyamide film is subjected to a heat treatment in a helium gas atmosphere at 200° C. for 10 minutes, a total amount of the volatile base components evolved from the easy adhesion polyamide film is 0.50 ?g/g or less.
    Type: Application
    Filed: October 8, 2014
    Publication date: March 12, 2015
    Applicant: UNITIKA LTD.
    Inventors: Takayoshi Okuzu, Hideki Kuwata
  • Patent number: 8933160
    Abstract: A resin composition is provided, which comprises: 40 to 95% by mass of a resin component containing 10 to 100% by mass of a polyarylate resin and 90 to 0% by mass of a polycarbonate resin; and 60 to 5% by mass of spherical silica having an average particle diameter of not greater than 10 ?m. The resin composition is molded into a product.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: January 13, 2015
    Assignee: Unitika Ltd.
    Inventor: Hiroo Kamikawa
  • Patent number: 8883885
    Abstract: Disclosed is a polyamide resin composition comprising 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 is subjected to a polymerization reaction in the presence of the cellulose fiber having an average fiber diameter of 10 ?m or less in a water-containing state.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: November 11, 2014
    Assignee: Unitika Ltd.
    Inventors: Miho Nakai, Keisuke Kimura
  • Patent number: 8822432
    Abstract: A composition which can significantly accelerate equol production is provided. When formulated in a pharmaceutical preparation or a food or drink, this composition exerts effects of preventing a vascular disease by the cholesterol lowering function, preventing breast cancer or prostatic cancer, and preventing and/or treating osteoporosis. Also, when formulated in a feed or a pet food, the bone density is enhanced, so that it exerts effects to prevent weak legs of a pig, to strengthen egg shell of a laying hen, to prevent osteoporosis in a dog etc., and the like. It is a composition which comprises lactobionic acid, a salt of lactobionic acid or lactobionolactone as an active ingredient and a food or drink, a feed, a pet food or a pharmaceutical preparation, which contains the composition, and have effects to prevent and treat osteoporosis, an function to increase bone density, an effect to prevent breast cancer or prostatic cancer, and a cholesterol lowering function.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: September 2, 2014
    Assignee: Unitika Ltd.
    Inventors: Kenichi Oe, Takashi Kimura
  • Patent number: 8808728
    Abstract: A feed additive for laying hens comprising lactobionic acid or a lactobionic acid salt and a feed characterized by containing a feed additive for laying hens comprising lactobionic acid or a lactobionic acid salt and a feed. Namely, a feed additive for laying hens, which is excellent in effect of reinforcing eggshells, shows a particularly remarkable effect of improving eggshell qualities in the second half of the laying period, relieves stress caused by forced molting, cage transfer and so on and can inhibit lowering in the egg-laying rate.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: August 19, 2014
    Assignee: Unitika Ltd.
    Inventors: Takashi Kimura, Munehiko Dombo
  • Publication number: 20140228489
    Abstract: A semi-aromatic polyamide including an aromatic dicarboxylic acid component, an aliphatic diamine component and a monocarboxylic acid component and having a melting point of 300° C. or higher, wherein the monocarboxylic acid component includes a monocarboxylic acid having a molecular weight of 140 or more, and the content of the monocarboxylic acid component is 1 to 8% by mass.
    Type: Application
    Filed: September 6, 2012
    Publication date: August 14, 2014
    Applicant: UNITIKA LTD.
    Inventors: Makoto Nakai, Mariko Morimoto, Ryosuke Kobayashi, Yuji Kitora
  • Patent number: 8800783
    Abstract: A hollow fiber membrane is produced through a thermally induced phase separation process by dissolving a highly hydrophilic polyamide resin in a high-boiling-point solvent such as an aprotic polar solvent at a temperature of not lower than 100° C. The hollow fiber membrane has a membrane surface having a water contact angle of not greater than 80 degrees, and has a water permeability of not less than 100 L/m2·atm·h and a 0.1-?m particle rejection percentage of not less than 90%.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: August 12, 2014
    Assignee: Unitika Ltd.
    Inventors: Hideto Matsuyama, Takahiro Ono, Satoshi Kawanaka, Kazuo Hirota
  • Publication number: 20140193648
    Abstract: A biaxially stretched polyester film, being a biaxially stretched film including a modified polybutylene terephthalate (modified PBT) and polyethylene terephthalate (PET), wherein a mass ratio (modified PBT/PET) between the modified PBT and PET is 20/80 to 5/95, the modified PBT is a PBT containing 5 to 20% by mass of a polytetramethylene glycol unit having a molecular weight of 600 to 4,000, the amount of tetrahydrofuran (THF) generated by heat treating the biaxially stretched film in a helium gas atmosphere at 180° C. for 30 minutes is 50 ?g/g or less, and the biaxially stretched film has tear linearity in a lengthwise direction thereof.
    Type: Application
    Filed: September 3, 2012
    Publication date: July 10, 2014
    Applicant: UNITIKA LTD.
    Inventors: Takayoshi Okuzu, Tomoharu Suzuki
  • Publication number: 20140137435
    Abstract: An aqueous dispersion including an acid-modified polyolefin resin (A) having a content of an unsaturated carboxylic acid component of 0.1 to 10% by mass, a rubber component (B), a tackifier component (C) and an aqueous medium, wherein in relation to 100 parts by mass of the acid-modified polyolefin resin (A), the content of the rubber component (B) is 5 to 1900 parts by mass, and in relation to 100 parts by mass of the total amount of the acid-modified polyolefin resin (A) and the rubber component (B), the content of the tackifier component (C) is 5 to 300 parts by mass.
    Type: Application
    Filed: June 14, 2012
    Publication date: May 22, 2014
    Applicant: UNITIKA LTD.
    Inventor: Takuma Yano
  • Publication number: 20140120360
    Abstract: The present invention provides coated fibrous copper microparticles, wherein the coated fibrous copper microparticles are fibrous copper microparticles each at least partially coated with a metal other than copper, and the length and the aspect ratio of the fibrous copper microparticles are 1 ?m or more and 10 or more, respectively.
    Type: Application
    Filed: June 14, 2012
    Publication date: May 1, 2014
    Applicant: UNITIKA LTD.
    Inventors: Munenori Yamada, Akira Shigeta, Masahiro Hosoda, Yoshiaki Echigo
  • Publication number: 20140030749
    Abstract: The present invention relates to glucose dehydrogenase [NAD(P)+GDH] using nicotinamide adenine dinucleotide or nicotinamide adenine dinucleotide phosphate as a coenzyme, in which the thermal stability and/or the resistance to an organic solvent in the absence of sodium chloride are improved.
    Type: Application
    Filed: March 30, 2012
    Publication date: January 30, 2014
    Applicant: UNITIKA LTD.
    Inventors: Masafumi Yao, Shido Kawase, Shin-ichi Yokobori, Akihiko Yamagishi
  • Patent number: 8637152
    Abstract: Disclosed is a packaging material, wherein a barrier layer, an adhesive layer and a sealant layer are laminated in this order, and the adhesive layer includes an acid-modified polyolefin resin that contains a (meth)acrylic acid ester component. The packaging material is preferably produced by forming on the barrier layer the adhesive layer including the acid-modified polyolefin resin that contains a (meth)acrylic acid ester component, and by subsequently laminating a molten sealant resin on the adhesive layer by extrusion lamination.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: January 28, 2014
    Assignee: Unitika Ltd.
    Inventors: Kenjin Shiba, Takuma Yano, Masafumi Yamada, Takamasa Yoshino