Patents Assigned to Japan Polypropylene Corporation
  • Patent number: 11739171
    Abstract: A catalyst configured to be handled more easily than conventional catalysts and configured to copolymerize an ?-olefin and a (meth)acrylic acid ester with high activity. The objects are achieved by polymerization using an olefin polymerization catalyst which contains a metal complex obtained by reacting a ligand having a specific structure and a transition metal compound containing a transition metal selected from nickel or palladium having a specific structure.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: August 29, 2023
    Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Yohei Konishi, Hiromasa Tanahashi, Hisashi Ohtaki, Naomasa Sato
  • Publication number: 20230174758
    Abstract: Provided is A polypropylene-based resin composition comprising 2 mass % to 30 mass % of a polypropylene resin (X1) having specific properties, 5 mass % to 98 mass % of a polypropylene resin (X2) having specific properties, and 0 mass % to 80 mass % of a polypropylene-based resin (Y) having specific properties, wherein the total amount of the polypropylene resin (X1), the polypropylene resin (X2) and the polypropylene-based resin (Y) is 100 mass %.
    Type: Application
    Filed: May 28, 2021
    Publication date: June 8, 2023
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Tomoki UCHIDA, Takahisa NISHIBU, Masaaki ITO, Miori TAKIZAWA
  • Publication number: 20230142911
    Abstract: To provide an olefin polymerization catalyst having high catalytic activity (polymerization activity), an olefin polymerization catalyst production method, and an olefin polymer production method using the olefin polymerization catalyst. An olefin polymerization catalyst comprising the following components [A], [B] and [C]: the component [A]: a metallocene complex having a specific indenyl structure, the component [B]: a solid component containing one or more selected from the group consisting of (b-1) a fine particulate carrier on which an ionic compound or Lewis acid which can convert the component [A] into a cation by reaction with the component [A], is supported, (b-2) solid acid fine particles, and (b-3) an ion-exchange layered compound, and the component [C]: a specific silylacetylene compound.
    Type: Application
    Filed: March 23, 2021
    Publication date: May 11, 2023
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Munehito FUNAYA, Ryota FUJITA
  • Patent number: 11511529
    Abstract: This decorative film is to be bonded to a resin molded body by means of thermoforming, and comprises a sealing layer (I) that contains a polypropylene resin (A) and a layer (II) that contains a polypropylene resin (B). The polypropylene resin (A) satisfies the requirement (a1), while the polypropylene resin (B) satisfies the requirement (b1). (a1) The melt flow rate (MFR (A)) (at 230° C. under a load of 2.16 kg) is more than 0.5 g/10 minutes. (b1) The melt flow rate (MFR (B)) (at 230° C. under a load of 2.16 kg) and the MFR (A) satisfy relational expression (b-1). MFR (B)<MFR (A) (b-1).
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: November 29, 2022
    Assignee: Japan Polypropylene Corporation
    Inventors: Satoshi Katsuno, Kazuo Asuka, Hayato Kitaura, Morikazu Niibe, Kuninori Takahashi
  • Publication number: 20220169847
    Abstract: A polyamide resin composition comprising a polyamide resin (I) and an ionomer (II), wherein the ionomer resin (II) is substantially linear. The resin composition has more excellent impact resistance than a conventional resin composition.
    Type: Application
    Filed: April 1, 2020
    Publication date: June 2, 2022
    Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventor: Kazunari ABE
  • Publication number: 20220144978
    Abstract: The present invention relates to a method for producing a catalyst component for olefin polymerization, the method including step (3): granulating, by a spray drying, an aqueous slurry of an ion-exchangeable second layered silicate (B) that satisfies that an average particle diameter is 0.03 ?m to 0.4 ?m, and a Rosin-Rammler distribution constant n determined from a particle size distribution is 1.5 or more; and step (4): bringing the obtained first layered silicate granulated particles (C) into contact with acid to obtain chemically treated ion-exchangeable second layered silicate granulated particles (D).
    Type: Application
    Filed: March 17, 2020
    Publication date: May 12, 2022
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Morikazu NIIBE, Miyuki MURASE, Takehiro SAGAE
  • Publication number: 20220135718
    Abstract: A multi-component ionomer, wherein, in a multi-component copolymer (D) comprising, as essential constitutional units, a structural unit (A) derived from at least one selected from the group consisting of ethylene and an ?-olefin containing 3 to 20 carbon atoms, a structural unit (B) derived from a monomer containing at least one selected from the group consisting of a carboxy group and a dicarboxylic anhydride group, and a structural unit (C) derived from a specific acyclic monomer, at least a part of at least one selected from the group consisting of a carboxy group and a dicarboxylic anhydride group of the structural unit (B) is converted into a specific metal-containing carboxylate, and wherein a phase angle ? at which an absolute value G* of a complex modulus measured with a rotational rheometer is 0.1 MPa (G*=0.1 MPa) is from 50 degrees to 75 degrees.
    Type: Application
    Filed: February 27, 2020
    Publication date: May 5, 2022
    Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Masahiro UEMATSU, Kohei TAKAMITSU, Tomohiko SATOU, Yoshika YAMADA
  • Publication number: 20220106471
    Abstract: Provided is a polar group-containing multi-component olefin copolymer comprising: structural units (A) derived from ethylene or an ?-olefin; structural units (B) having a carboxyl group or a structure which forms a carboxyl group by an elimination reaction due to heat or an acid; and structural units (C) derived from acrylic acid, which do not have a carboxyl group, and which do not cause an elimination reaction due to heat or an acid under the same conditions as those for the elimination reaction due to heat or an acid in which the structural units (B) form a carboxyl group.
    Type: Application
    Filed: January 27, 2020
    Publication date: April 7, 2022
    Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Tomohiko SATOU, Masahiro UEMATSU, Yoshika YAMADA
  • Patent number: 11168166
    Abstract: An object of the present invention is to provide a multi-component polar olefin copolymer which has sufficiently improved solvent solubility without impairing mechanical properties and the like. The present invention relates to a multi-component polar olefin copolymer containing: one kind of unit of nonpolar monomer (X1) that is ethylene or an ?-olefin having 3 to 10 carbon atoms; one or two or more kinds of units of polar monomers (formula (1), Z1); and structural unit(s) of one or two or more kinds of units of nonpolar monomers (X2) that are different from the above X1 and/or one or two or more kinds of units of polar monomers (formula (2), Z2): H2C?CH—COOQT1??(1) H2C?CH-T2??(2).
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: November 9, 2021
    Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Minoru Kobayashi, Tomohiko Satou, Masahiro Uematsu, Yoshika Yamada
  • Patent number: 11084957
    Abstract: A method of producing a polar-group-containing olefin copolymer which comprises 99.999 to 80 mol % of structural units derived from at least one of ethylene and ?-olefin having 3 to 20 carbon atoms and 20 to 0.001 mol % of structural units derived from at least one polar-group-containing monomer which contains an epoxy group and is represented by structural formula (I) or (II), the method comprising random copolymerization in the presence of a transition metal catalyst to obtain a copolymer having a linear molecular structure.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: August 10, 2021
    Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Masahiro Uematsu, Kazunari Abe, Hiroyuki Shimizu, Tetsuya Morioka
  • Publication number: 20210122853
    Abstract: A catalyst configured to be handled more easily than conventional catalysts and configured to copolymerize an ?-olefin and a (meth)acrylic acid ester with high activity. The objects are achieved by polymerization using an olefin polymerization catalyst which contains a metal complex obtained by reacting a ligand having a specific structure and a transition metal compound containing a transition metal selected from nickel or palladium having a specific structure.
    Type: Application
    Filed: March 18, 2019
    Publication date: April 29, 2021
    Applicants: Japan Polyethylene Corporation, Japan Polypropylene Corporation
    Inventors: Yohei KONISHI, Hiromasa TANAHASHI, Hisashi OHTAKI, Naomasa SATO
  • Patent number: 10975182
    Abstract: The present invention relates to a polar group-containing olefin copolymer (A?) which is produced through polymerization using a transition metal catalyst, which has a weight-average molecular weight falling within a specific range and which contains a polar group-containing monomer within a specific range; a multinary polar olefin copolymer (A?) indispensably containing a polar monomer component that has a norbornene skeleton and a carboxyl group or an acid anhydride group and having three or more types of monomer units; and a resin composition (C) containing a specific amount of a polar group-containing olefin copolymer (A) and a specific amount of an olefin resin (B).
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: April 13, 2021
    Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Kazunari Abe, Minoru Kobayashi, Hideshi Uchino, Hiroyuki Shimizu, Tetsuya Morioka, Naoshi Iwama
  • Patent number: 10947373
    Abstract: The present invention relates to a polypropylene resin composition for a microporous film which can reduce the product defect rate due to stabilization of porous formation by stabilizing film formation and also can obtain a film suitably usable for a separator, a filtration membrane, a separation membrane and a filter since the microporous film can be thinned due to high rigidity, and more specifically, relates to a polypropylene resin composition for a microporous film wherein the composition comprises 5 to 30% by weight of polypropylene resin (X) having specific MFR, molecular weight distribution Mw/Mn by GPC, melt tension (MT), branching index g? and mm fraction of the propylene unit triads by 13C-NMR, satisfying specific conditions concerning gels and having a long chain branched structure and 95 to 70% by weight of polypropylene resin (Y) having a specific MFR and excluding the polypropylene resin (X).
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: March 16, 2021
    Assignee: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Satoshi Katsuno, Shinichi Kitade
  • Publication number: 20210061980
    Abstract: Provided is a multi-component, polar group-containing olefin copolymer balanced between transparency, rigidity and toughness. The multi-component, polar group-containing olefin copolymer is a multi-component, polar group-containing olefin copolymer comprising: at least one structural unit (A) selected from the group consisting of a structural unit derived from ethylene and a structural unit derived from an ?-olefin which contains 3 to 20 carbon atoms, at least one structural unit (B) composed of a polar group-containing olefin monomer, and a structural unit (C) derived from a non-polar cyclic olefin.
    Type: Application
    Filed: December 17, 2018
    Publication date: March 4, 2021
    Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Tomohiko SATOU, Minoru KOBAYASHI, Masahiro UEMATSU, Yoshika YAMADA
  • Publication number: 20200385502
    Abstract: An object of the present invention is to provide a multi-component polar olefin copolymer which has sufficiently improved solvent solubility without impairing mechanical properties and the like.
    Type: Application
    Filed: March 28, 2018
    Publication date: December 10, 2020
    Applicants: Japan Polyethylene Corporation, Japan Polypropylene Corporation
    Inventors: Minoru KOBAYASHI, Tomohiko SATOU, Masahiro UEMATSU, Yoshika YAMADA
  • Publication number: 20200384678
    Abstract: The present invention provides a decorative film including a layer containing at least one type of additive selected from a nucleating agent, a hindered-amine-based photostabilizer, and a UV-absorbing agent, satisfying the condition below, the decorative film being for affixing, by thermoforming, onto a resin molded article having a three-dimensional shape. Condition: The amount of variation in the haze value measured by a method conforming to JIS-K7136 in a glass plate that has been subjected to the fogging test below, which conforms to ISO 6452, is 40 or less. <Fogging test>: 1 g (±0.01 g) of the additive was placed in a sample bottle made of glass, the sample bottle was closed using a glass plate, and clouding (fogging) was produced on the glass plate by heating the sample bottle for 1 hour at 150° C.
    Type: Application
    Filed: November 19, 2018
    Publication date: December 10, 2020
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Morikazu NIIBE, Satoshi KATSUNO, Kazuo ASUKA, Hayato KITAURA, Kuninori TAKAHASHI
  • Patent number: 10717855
    Abstract: An object of the present invention is to provide a novel production method of ethylene-based ionomer having excellent mechanical properties and heat resistance which exhibits remarkably excellent breaking elongation, breaking stress, and strain hardening, and has a high melting point. The present invention relates to a production method of an ethylene-based ionomer including a heating conversion step of heating a specific ethylene/unsaturated carboxylic acid ester copolymer and converting the ester group in the copolymer into a metal-containing carboxylate containing a metal ion of Group 1, 2, or 12 of the periodic table.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: July 21, 2020
    Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Takaaki Hattori, Toshiaki Egashira, Masahiro Uematsu
  • Patent number: 10550211
    Abstract: Provided is a process of effectively producing an ethylene/unsaturated carboxylic acid copolymer having excellent mechanical and thermal properties. A process for producing an ethylene/unsaturated carboxylic acid copolymer comprises: producing an ethylene/unsaturated carboxylic acid ester copolymer from ethylene and unsaturated carboxylic acid ester using a late-transition-metal complex catalyst; and heating the ethylene/unsaturated carboxylic acid ester copolymer at a temperature capable of converting the ester group into a carboxylic acid group, thereby converting into the ethylene/unsaturated carboxylic acid copolymer.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: February 4, 2020
    Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATION
    Inventors: Naomasa Sato, Fumihiko Shimizu, Akio Tanna, Toshiaki Egashira
  • Patent number: 10526427
    Abstract: A method for producing a solid catalyst component (Aa) for ?-olefin polymerization, which includes: bringing components (A1) to (A4) into contact with one another in an inert solvent; and without washing the contact product with an inert solvent, aging the contact product by keeping for a holding time of 3 days or more and 180 days or less, regarding the time point that all of the components (A1) to (A4) first come into contact, as a starting point.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: January 7, 2020
    Assignee: Japan Polypropylene Corporation
    Inventors: Keiji Fukuda, Shouichi Ida, Akio Tanna, Shigeo Mizukami
  • Patent number: 10464251
    Abstract: The present invention provides a thermal molding sheet having a thickness of 1 mm or more and formed by a polypropylene resin composition comprising: 5 to 97 wt % of a polypropylene resin (A) whose MFR and melt tension satisfy specific conditions and which has a long-chain branch structure; 1 to 93 wt % of a polypropylene resin (B) whose MFR satisfies specific conditions; 1 to 40 wt % of a thermoplastic elastomer (C); and 1 to 40 wt % of a filler (D).
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: November 5, 2019
    Assignee: Japan Polypropylene Corporation
    Inventors: Kazuo Asuka, Hayato Kitaura, Morikazu Niibe, Kuninori Takahashi