Patents by Inventor Kazuyoshi Kaneko
Kazuyoshi Kaneko 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).
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Publication number: 20240132705Abstract: An object of the present disclosure is to provide a rubber composition from which a crosslinked rubber molded product having excellent resilience performance can be obtained. The present disclosure provides a rubber composition containing (a) a base rubber, (b) a co-crosslinking agent, and (c) a crosslinking initiator, wherein (b) the co-crosslinking agent includes (b1) a metal complex, and (b1) the metal complex is composed of (b11) a metal component, (b12) a ligand derived from an ?,?-unsaturated carboxylic acid compound having 3 to 8 carbon atoms, and (b13) a ligand derived from a mercaptobenzothiazole-based compound.Type: ApplicationFiled: October 6, 2023Publication date: April 25, 2024Applicant: Sumitomo Rubber Industries, Ltd.Inventors: Ayaka SHINDO, Takumi KANEKO, Hiroshi TADAOKA, Kazuyoshi SHIGA
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Patent number: 10377889Abstract: A thermoplastic elastomer composition obtained by dynamically crosslinking an ethylene/?-olefin/non-conjugated polymer copolymer (A), a polyolefin resin (B), a softener (C) in an amount of 1 to 200 parts by mass per 100 parts by mass of the total of the copolymer (A) and the resin (B), and a crosslinking agent (D) by the use of a batch mixer under the conditions satisfying the requirements (1) to (4).Type: GrantFiled: March 23, 2016Date of Patent: August 13, 2019Assignee: MITSUI CHEMICALS, INC.Inventors: Hayato Kurita, Kazuyoshi Kaneko, Masahiro Enna, Tatsuya Enomoto, Hideki Mochizuki
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Publication number: 20180072880Abstract: A thermoplastic elastomer composition obtained by dynamically crosslinking an ethylene/?-olefin/non-conjugated polymer copolymer (A), a polyolefin resin (B), a softener (C) in an amount of 1 to 200 parts by mass per 100 parts by mass of the total of the copolymer (A) and the resin (B), and a crosslinking agent (D) by the use of a batch mixer under the conditions satisfying the requirements (1) to (4).Type: ApplicationFiled: March 23, 2016Publication date: March 15, 2018Applicant: MITSUI CHEMICALS, INC.Inventors: Hayato KURITA, Kazuyoshi KANEKO, Masahiro ENNA, Tatsuya ENOMOTO, Hideki MOCHIZUKI
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Patent number: 9023906Abstract: To provide a propylene-based copolymer and a propylene-based copolymer composition, each of which has a high melt tension because it has a long-chain branched structure, exhibits excellent molding processability during molding, such as inflation molding, extrusion molding, blow molding, injection molding or vacuum forming, and is capable of favorably providing a foamed product having an excellent expansion ratio and excellent cell uniformity in the foaming stage. The propylene-based copolymer (A) of the present invention comprises 50 to 95% by mol of constituent units [i] derived from propylene, 4.9 to 49.9% by mol of constituent units [ii] derived from an ?-olefin of 2 to 10 carbon atoms other than propylene and 0.1 to 10% by mol of constituent units [iii] derived from a non-conjugated polyene (with the proviso that the total amount of the constituent units [i], [ii] and [iii] is 100% by mol), and is characterized by satisfying specific requirements (a) and (c).Type: GrantFiled: May 17, 2012Date of Patent: May 5, 2015Assignee: Mitsui Chemicals, Inc.Inventors: Masahiko Okamoto, Mayumi Yasuda, Tetsuji Kasai, Kazuyoshi Kaneko, Kyoko Kobayashi, Kotaro Ichino
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Publication number: 20140088214Abstract: To provide a propylene-based copolymer and a propylene-based copolymer composition, each of which has a high melt tension because it has a long-chain branched structure, exhibits excellent molding processability during molding, such as inflation molding, extrusion molding, blow molding, injection molding or vacuum forming, and is capable of favorably providing a foamed product having an excellent expansion ratio and excellent cell uniformity in the foaming stage. The propylene-based copolymer (A) of the present invention comprises 50 to 95% by mol of constituent units [i] derived from propylene, 4.9 to 49.9% by mol of constituent units [ii] derived from an ?-olefin of 2 to 10 carbon atoms other than propylene and 0.1 to 10% by mol of constituent units [iii] derived from a non-conjugated polyene (with the proviso that the total amount of the constituent units [i], [ii] and [iii] is 100% by mol), and is characterized by satisfying specific requirements (a) and (c).Type: ApplicationFiled: May 17, 2012Publication date: March 27, 2014Inventors: Masahiko Okamoto, Mayumi Yasuda, Tetsuji Kasai, Kazuyoshi Kaneko, Kyoko Kobayashi, Kotaro Ichino
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Patent number: 8101254Abstract: The present invention provides a molded product exhibiting excellent various properties by improving compatibility of an ethylene/?-olefin/non-conjugated polyene copolymer with a polyolefin resin and a rubber composition for forming the molded product. The present invention further provides a molded product which comprises a rubber composition, is inhibited from fogging and tackiness and is excellent in mechanical strength and heat aging resistance. The rubber composition of the invention comprises an ethylene/?-olefin/non-conjugated polyene copolymer (A), and a polyolefin resin (B) having Mn of not less than 10,000 and/or an ethylene/?-olefin copolymer (C) having Mn of 2500 to 5000, and satisfies the following requirements: (1) a maximum value and a minimum value of an ethylene distribution parameter P of the component (A) have a relationship of Pmax/Pmin?1.Type: GrantFiled: December 4, 2008Date of Patent: January 24, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Yuji Noguchi, Takashi Hakuta, Hiroki Ebata, Kotaro Ichino, Shuichi Nonaka, Satoshi Hase, Kazuyoshi Kaneko, Akinori Takehara
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Patent number: 8088865Abstract: Provided is a method for producing a resin composition by melt-kneading a cyclic olefin polymer (A) having a glass transition temperature of from 60 to 200° C. and a flexible polymer (B) having a glass transition temperature of 0° C. or lower, wherein a part of the cyclic olefin polymer (A) is previously melt-kneaded with the flexible polymer (B) and a radical initiator (C) and then the remaining cyclic olefin polymer (A) is added thereto and melt-kneaded. The cyclic olefin polymer (A) is divided into two portions and added separately at two times, and accordingly, the mixture having a crosslinked structure may be diluted with the cyclic olefin polymer (A) not having a crosslinked structure, and the increase in the melt viscosity of the resin composition may be thereby prevented. A composition having good abrasion resistance and good melt shapability can be obtained.Type: GrantFiled: August 29, 2005Date of Patent: January 3, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Kazuyoshi Kaneko, Toshiyuki Hirose
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Publication number: 20110297230Abstract: Provided is a resin composition for a solar cell package and a resin composition for a wet solar cell package which are excellent in transparency, moisture resistance, weather resistance and chemical resistance and are suitable as a material of a package for a solar cell, and a package for a wet solar cell and a transparent substrate for a wet solar cell which are obtained by molding the resin composition.Type: ApplicationFiled: August 12, 2011Publication date: December 8, 2011Applicant: Mitsui Chemicals, Inc.Inventors: Kazuyoshi Kaneko, Hiroyasu Yamaoka
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Publication number: 20110060096Abstract: A cyclic olefin resin composition which includes (A) 35 to 85 parts by weight of a cyclic olefin polymer having a glass transition temperature of 60 to 200° C., (B) 10 to 60 parts by weight of a flexible copolymer, prepared by polymerizing at least two monomers selected from the group consisting of an olefin compound, a diene compound and an aromatic vinyl hydrocarbon compound, and having a glass transition temperature of 0° C. or below, and (C) 5 to 55 parts by weight of a modified polyolefin. The cyclic olefin resin composition further includes, based on 100 parts by weight of total amount of the components (A), (B) and (C), (D) 0.01 to 5 parts by weight of a radical initiator and (E) 0 to 5 parts by weight of a polyfunctional compound having in its molecule two or more radically polymerizable functional groups. The composition can be used as a material for a substrate having low permittivity, low dielectric tangent, low water absorbability, and excellent heat resistance.Type: ApplicationFiled: November 11, 2010Publication date: March 10, 2011Applicant: Mitsui Chemicals, Inc.Inventors: Kazuyoshi KANEKO, Toshiyuki Hirose, Hiroyasu Yamaoka, Kenichi Goto, Akira Hasegawa
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Publication number: 20100294781Abstract: A resin composition of the present invention contains 99 to 30 parts by weight of a cyclic olefin polymer (A); 1 to 70 parts by weight of a soft copolymer (B) obtained by polymerizing at least two kinds of monomers selected from the group consisting of olefins, dienes, and aromatic vinyl hydrocarbons and having a glass transition temperature of 0° C. or lower; and relative to 100 parts by weight of total amount of the cyclic olefin polymer (A) and the soft copolymer (B), 0.001 to 1 part by weight of a radical initiator (C), 0 to 1 part by weight of a polyfunctional compound (D) having two or more radically polymerizable functional groups in a molecule, and 0.5 to 10 parts by weight of a nonionic or anionic antistatic agent (E).Type: ApplicationFiled: April 23, 2008Publication date: November 25, 2010Applicant: MITSUI CHEMICALS, INC.Inventors: Kazuyoshi Kaneko, Priscille Angot
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Publication number: 20090239014Abstract: The present invention provides a molded product exhibiting excellent various properties by improving compatibility of an ethylene/?-olefin/non-conjugated polyene copolymer with a polyolefin resin and a rubber composition for forming the molded product. The present invention further provides a molded product which comprises a rubber composition, is inhibited from fogging and tackiness and is excellent in mechanical strength and heat aging resistance. The rubber composition of the invention comprises an ethylene/?-olefin/non-conjugated polyene copolymer (A), and a polyolefin resin (B) having Mn of not less than 10,000 and/or an ethylene/?-olefin copolymer (C) having Mn of 2500 to 5000, and satisfies the following requirements: (1) a maximum value and a minimum value of an ethylene distribution parameter P of the component (A) have a relationship of Pmax/Pmin?1.Type: ApplicationFiled: December 4, 2008Publication date: September 24, 2009Inventors: Yuji Noguchi, Takashi Hakuta, Hiroki Ebata, Kotaro Ichino, Shuichi Nonaka, Satoshi Hase, Kazuyoshi Kaneko, Akinori Takehara
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Publication number: 20090050196Abstract: The present invention provides a resin composition for a solar cell package and a resin composition for a wet solar cell package which are excellent in transparency, moisture resistance, weather resistance and chemical resistance and are suitable as a material of a package for a solar cell, and a package for a wet solar cell and a transparent substrate for a wet solar cell which are obtained by molding the resin composition. The resin composition for a solar cell package of the present invention contains a cyclic olefin polymer having one kind or two or more kinds of structures represented by the following general formula (1) (provided that, in the formula, x and y represent the copolymerization ratio and are a real number satisfying 0/100?y/x?95/5. n is the number of substitution of a substituent Q and an integer of 0?n?2. R1 is a 2+n valent group selected from the group consisting of hydrocarbon groups having 2 to 20 carbon atoms.Type: ApplicationFiled: March 15, 2006Publication date: February 26, 2009Applicant: Mitsui Chemicals, Inc.Inventors: Kazuyoshi Kaneko, Hiroyasu Yamaoka
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Publication number: 20080249235Abstract: A cyclic olefin resin composition which can be suitably used as a material for a substrate having low permittivity, low dielectric tangent, low water absorbability, excellent heat resistance, and the like, and a substrate obtained from the resin composition are provided. In particular, there is provided a novel cyclic olefin resin composition that can be suitably used as a material for a substrate for high frequency circuit dealing with high frequency signal transmission. The cyclic olefin resin composition comprises (A) 5 to 95 parts by weight of a cyclic olefin polymer having a glass transition temperature of 60 to 200° C. and (B) 5 to 95 parts by weight of a flexible copolymer, prepared by polymerizing at least two monomers selected from the group consisting of an olefin compound, a diene compound and an aromatic vinyl hydrocarbon compound, and having a glass transition temperature of 0° C. or below.Type: ApplicationFiled: January 31, 2006Publication date: October 9, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Kazuyoshi Kaneko, Toshiyuki Hirose, Hiroyasu Yamaoka, Kenichi Goto, Akira Hasegawa
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Publication number: 20070255030Abstract: Provided is a shaped article for clean rooms comprising a resin composition prepared by melt-kneading 100 parts by weight of a cyclic olefin polymer (A) having a glass transition temperature of from 60 to 200° C., from 1 to 150 parts by weight of a flexible copolymer (B) prepared by polymerizing at least two monomers selected from a group consisting of olefins, dienes and aromatic vinyl-hydrocarbons, and having a glass transition temperature of 0° C. or lower, from 0.001 to 1 part by weight of a radical initiator (C), and from 0 to 1 part by weight of a polyfunctional compound (D) having at least two radical-polymerizable functional groups in the molecule. The shaped article for clean rooms has good chemical resistance, heat resistance and dimensional accuracy, it is inhibited from releasing a volatile component around it, and it has good abrasion resistance and is inhibited from producing particles.Type: ApplicationFiled: August 29, 2005Publication date: November 1, 2007Applicants: Fuji Bakelite Co., Ltd., Mitsui Chemicals, Inc., Osaka Gas Chemicals Co., Ltd.Inventors: Takaki Sakamoto, Jun Shiraga, Noriyuki Konnai, Takayuki Kobayashi, Kazuyoshi Kaneko, Toshiyuki Hirose, Keita Nakanishi, Hiroaki Nagai
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Publication number: 20070155903Abstract: Provided is a method for producing a resin composition by melt-kneading a cyclic olefin polymer (A) having a glass transition temperature of from 60 to 200° C. and a flexible polymer (B) having a glass transition temperature of 0° C. or lower, wherein a part of the cyclic olefin polymer (A) is previously melt-kneaded with the flexible polymer (B) and a radical initiator (C) and then the remaining cyclic olefin polymer (A) is added thereto and melt-kneaded. The cyclic olefin polymer (A) is divided into two portions and added separately at two times, and accordingly, the mixture having a crosslinked structure may be diluted with the cyclic olefin polymer (A) not having a crosslinked structure, and the increase in the melt viscosity of the resin composition may be thereby prevented. A composition having good abrasion resistance and good melt shapability can be obtained.Type: ApplicationFiled: August 29, 2005Publication date: July 5, 2007Applicant: MITSUI CHEMICALS, INC.Inventors: Kazuyoshi Kaneko, Toshiyuki Hirose
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Patent number: 6826824Abstract: A system and method are used to assemble and fill an embedded magnet type rotor. The system and method prevent rotation of the rotor core within a manufacturing device as the rotor core is being filled and the embedded magnets are magnetically orientated. The embedded magnet type rotor is made by a process in which resinous magnet is filled in slits provided in a rotor core. In one embodiment, a recessed portion of the core in a shaft hole is engageable with a projecting portion of a core pin of a metallic mold for use in filling the resinous magnet to prevent rotation of the core. Other positioning devices are also used to prevent rotation.Type: GrantFiled: July 27, 2001Date of Patent: December 7, 2004Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Ishihara Hiroyuki, Kazuyoshi Kaneko, Shinya Naito
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Patent number: 6632885Abstract: The present invention is intended to provide a soft syndiotactic polypropylene composition having a good balance of properties such as transparency, flexibility and heat resistance and a laminate having a layer comprising the composition and a layer comprising a thermoplastic resin. The composition (1) comprises a syndiotactic propylene polymer (A), an &agr;-olefin polymer (B), and a small amount of a crystal nucleating agent (C) and/or an ethylene-based polymer (D). The composition (2) comprises a syndiotactic propylene polymer (A), an &agr;-olefin polymer (B), an isotactic propylene polymer (E), and a small amount of a crystal nucleating agent (C) and/or an ethylene-based polymer (D). The composition (3) comprises a syndiotactic propylene polymer (A), an &agr;-olefin polymer (B), an isotactic propylene polymer (E), a copolymer (F) of polar group-containing vinyl and ethylene, and a small amount of an ethylene-based polymer (D).Type: GrantFiled: July 12, 2002Date of Patent: October 14, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Kenichi Morizono, Ryoji Mori, Kazuyoshi Kaneko
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Publication number: 20030049477Abstract: The present invention is intended to provide a soft syndiotactic polypropylene composition having a good balance of properties such as transparency, flexibility and heat resistance and a laminate having a layer comprising the composition and a layer comprising a thermoplastic resin. The composition (1) comprises a syndiotactic propylene polymer (A), an &agr;-olefin polymer (B), and a small amount of a crystal nucleating agent (C) and/or an ethylene-based polymer (D). The composition (2) comprises a syndiotactic propylene polymer (A), an &agr;-olefin polymer (B), an isotactic propylene polymer (E), and a small amount of a crystal nucleating agent (C) and/or an ethylene-based polymer (D). The composition (3) comprises a syndiotactic propylene polymer (A), an &agr;-olefin polymer (B), an isotactic propylene polymer (E), a copolymer (F) of polar group-containing vinyl and ethylene, and a small amount of an ethylene-based polymer (D).Type: ApplicationFiled: July 12, 2002Publication date: March 13, 2003Inventors: Kenichi Morizono, Ryoji Mori, Kazuyoshi Kaneko
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Publication number: 20020047409Abstract: A system and method are used to assemble and fill an embedded magnet type rotor. The system and method prevent rotation of the rotor core within a manufacturing device as the rotor core is being filled and the embedded magnets are magnetically orientated. The embedded magnet type rotor is made by a process in which resinous magnet is filled in slits provided in a rotor core. In one embodiment, a recessed portion of the core in a shaft hole is engageable with a projecting portion of a core pin of a metallic mold for use in filling the resinous magnet to prevent rotation of the core. Other positioning devices are also used to prevent rotation.Type: ApplicationFiled: July 27, 2001Publication date: April 25, 2002Inventors: Ishihara Hiroyuki, Kazuyoshi Kaneko, Shinya Naito
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Patent number: 5918564Abstract: A seat for a small watercraft includes a shock-absorbing member that helps to absorb shocks transmitted to the seat during watercraft operation. The seat and the watercraft are configured to protect the shock-absorbing member from heat and water damage. The watercraft includes a hull having a length and a width. The hull carries an engine and includes a raised pedestal. A plurality of ventilation devices are located along the length of the hull. The seat is supported by the raised pedestal and includes a seat base, a cushion arrangement, and a seat skin that substantially covers the cushion arrangement. The cushion arrangement includes a cushion and the aforementioned viscoelastic member. A seal is provided between the seat base and the raised pedestal to protect the viscoelastic member from water damage. The viscoelastic member is provided at least partially between a pair of the ventilation devices. The seat base includes a first base portion and a second base portion and a plurality of air flow openings.Type: GrantFiled: April 21, 1997Date of Patent: July 6, 1999Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Kenichi Ohtsuka, Kazuyoshi Kaneko, Satoshi Tanigaki