Patents Assigned to Japan Polypropylene Corporation
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Patent number: 11739171Abstract: 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: GrantFiled: March 18, 2019Date of Patent: August 29, 2023Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Yohei Konishi, Hiromasa Tanahashi, Hisashi Ohtaki, Naomasa Sato
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Publication number: 20230174758Abstract: 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: ApplicationFiled: May 28, 2021Publication date: June 8, 2023Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Tomoki UCHIDA, Takahisa NISHIBU, Masaaki ITO, Miori TAKIZAWA
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Publication number: 20230142911Abstract: 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: ApplicationFiled: March 23, 2021Publication date: May 11, 2023Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Munehito FUNAYA, Ryota FUJITA
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Patent number: 11511529Abstract: 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: GrantFiled: August 2, 2017Date of Patent: November 29, 2022Assignee: Japan Polypropylene CorporationInventors: Satoshi Katsuno, Kazuo Asuka, Hayato Kitaura, Morikazu Niibe, Kuninori Takahashi
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Publication number: 20220169847Abstract: 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: ApplicationFiled: April 1, 2020Publication date: June 2, 2022Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventor: Kazunari ABE
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Publication number: 20220144978Abstract: 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: ApplicationFiled: March 17, 2020Publication date: May 12, 2022Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Morikazu NIIBE, Miyuki MURASE, Takehiro SAGAE
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Publication number: 20220135718Abstract: 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: ApplicationFiled: February 27, 2020Publication date: May 5, 2022Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Masahiro UEMATSU, Kohei TAKAMITSU, Tomohiko SATOU, Yoshika YAMADA
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Publication number: 20220106471Abstract: 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: ApplicationFiled: January 27, 2020Publication date: April 7, 2022Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Tomohiko SATOU, Masahiro UEMATSU, Yoshika YAMADA
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Patent number: 11168166Abstract: 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: GrantFiled: March 28, 2018Date of Patent: November 9, 2021Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Minoru Kobayashi, Tomohiko Satou, Masahiro Uematsu, Yoshika Yamada
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Patent number: 11084957Abstract: 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: GrantFiled: November 26, 2018Date of Patent: August 10, 2021Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Masahiro Uematsu, Kazunari Abe, Hiroyuki Shimizu, Tetsuya Morioka
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Publication number: 20210122853Abstract: 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: ApplicationFiled: March 18, 2019Publication date: April 29, 2021Applicants: Japan Polyethylene Corporation, Japan Polypropylene CorporationInventors: Yohei KONISHI, Hiromasa TANAHASHI, Hisashi OHTAKI, Naomasa SATO
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Patent number: 10975182Abstract: 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: GrantFiled: October 1, 2018Date of Patent: April 13, 2021Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Kazunari Abe, Minoru Kobayashi, Hideshi Uchino, Hiroyuki Shimizu, Tetsuya Morioka, Naoshi Iwama
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Patent number: 10947373Abstract: 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: GrantFiled: June 15, 2017Date of Patent: March 16, 2021Assignee: JAPAN POLYPROPYLENE CORPORATIONInventors: Satoshi Katsuno, Shinichi Kitade
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Publication number: 20210061980Abstract: 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: ApplicationFiled: December 17, 2018Publication date: March 4, 2021Applicants: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Tomohiko SATOU, Minoru KOBAYASHI, Masahiro UEMATSU, Yoshika YAMADA
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Publication number: 20200385502Abstract: 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: ApplicationFiled: March 28, 2018Publication date: December 10, 2020Applicants: Japan Polyethylene Corporation, Japan Polypropylene CorporationInventors: Minoru KOBAYASHI, Tomohiko SATOU, Masahiro UEMATSU, Yoshika YAMADA
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Publication number: 20200384678Abstract: 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: ApplicationFiled: November 19, 2018Publication date: December 10, 2020Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Morikazu NIIBE, Satoshi KATSUNO, Kazuo ASUKA, Hayato KITAURA, Kuninori TAKAHASHI
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Patent number: 10717855Abstract: 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: GrantFiled: October 15, 2015Date of Patent: July 21, 2020Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Takaaki Hattori, Toshiaki Egashira, Masahiro Uematsu
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Patent number: 10550211Abstract: 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: GrantFiled: January 11, 2018Date of Patent: February 4, 2020Assignees: JAPAN POLYETHYLENE CORPORATION, JAPAN POLYPROPYLENE CORPORATIONInventors: Naomasa Sato, Fumihiko Shimizu, Akio Tanna, Toshiaki Egashira
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Patent number: 10526427Abstract: 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: GrantFiled: December 16, 2016Date of Patent: January 7, 2020Assignee: Japan Polypropylene CorporationInventors: Keiji Fukuda, Shouichi Ida, Akio Tanna, Shigeo Mizukami
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Patent number: 10464251Abstract: 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: GrantFiled: October 6, 2016Date of Patent: November 5, 2019Assignee: Japan Polypropylene CorporationInventors: Kazuo Asuka, Hayato Kitaura, Morikazu Niibe, Kuninori Takahashi