Patents by Inventor Tomoaki Takebe
Tomoaki Takebe 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: 20110236683Abstract: Provided are a method of producing an elastic fiber, including the steps of: subjecting a raw material to melt extrusion with a spinning nozzle at 100 to 300° C.; cooling the fiber after the melt extrusion in a water bath at 0 to 50° C.; and winding the cooled fiber, in which a specific low-crystalline polypropylene is used as the raw material, and an elastic fiber having a core-sheath bicomponent structure, which is obtained by using a specific low-crystalline polypropylene.Type: ApplicationFiled: August 7, 2009Publication date: September 29, 2011Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Patent number: 8013091Abstract: Provided are a resin for an optical component, which has heat resistance, does not suffer from yellowing because of its stability against heat, and is excellent in transparency and workability; a raw material composition used for the resin for an optical component; and an optical component. Specifically, provided is a resin for an optical component containing a (meth)acrylate compound unit (A1), in which a hydrocarbon group containing an adamantane structure is ester-bonded, and a (meth)acrylate compound unit (B1) having a polyfunctional group, which is other than the unit (A1). Also, provided is a raw material composition used for a resin for an optical component, which contains a (meth)acrylate compound (A2) in which a hydrocarbon group containing an adamantane structure is ester-bonded, and a (meth)acrylate compound (B2) having a polyfunctional group, which is other than the compound (A2). Further, provided is an optical component which is obtained by polymerizing and molding the raw material composition.Type: GrantFiled: June 30, 2008Date of Patent: September 6, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Obata, Takeshi Iwasaki, Tomoaki Takebe
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Patent number: 7968665Abstract: A 1-butene polymer satisfying the following (1), (2) and either (3) or (3?): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [?] as measured in tetralin solvent at 135° C. is 0.01 to 0.5 dL/g. (2) The polymer is a crystalline resin having a melting point (Tm-D) of 0 to 100° C., the melting point being defined as the top of the peak observed on the highest-temperature side in a melting endothermic curve obtained with a differential scanning calorimeter (DSC) in a test in which a sample is held in a nitrogen atmosphere at ?10° C. for 5 min and then heated at a rate of 10° C./min. (3) The stereoregularity index {(mmmm)/(mmrr+rmmr)} is 30 or lower. (3?) The mesopentad content (mmmm) determined from a nuclear magnetic resonance (NMR) spectrum is 68 to 73%.Type: GrantFiled: September 21, 2007Date of Patent: June 28, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Minami, Masami Kanamaru, Toyozo Fujioka, Tomoaki Takebe, Masao Inoue
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Publication number: 20100324246Abstract: Provided are a resin for an optical component, which has heat resistance, does not suffer from yellowing because of its stability against heat, and is excellent in transparency and workability; a raw material composition used for the resin for an optical component; and an optical component. Specifically, provided is a resin for an optical component containing a (meth)acrylate compound unit (A1), in which a hydrocarbon group containing an adamantane structure is ester-bonded, and a (meth)acrylate compound unit (B1) having a polyfunctional group, which is other than the unit (A1). Also, provided is a raw material composition used for a resin for an optical component, which contains a (meth)acrylate compound (A2) in which a hydrocarbon group containing an adamantane structure is ester-bonded, and a (meth)acrylate compound (B2) having a polyfunctional group, which is other than the compound (A2). Further, provided is an optical component which is obtained by polymerizing and molding the raw material composition.Type: ApplicationFiled: June 30, 2008Publication date: December 23, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yutaka Obata, Takeshi Iwasaki, Tomoaki Takebe
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Patent number: 7842748Abstract: The present invention pertains to a master batch composition which contains 10 to 95% by mass of an additive for plastics, 1 to 50% by mass of an olefin polymer having specific physical properties, and 1 to 89% by mass of a polyolefin resin as a carrier, which is useful for producing a polyolefin resin, particularly an injection molded product of a polypropylene resin, which can improve dispersibility of additives in the polyolefin molded product, which permits high density filling of various additives in the master batch composition, and which is free of blocking. The present invention is also directed to a polyolefin resin composition in which the master batch composition is compounded in a polyolefin resin, and to a polyolefin molded product using the resin composition.Type: GrantFiled: November 22, 2005Date of Patent: November 30, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Tomoaki Takebe, Yutaka Minami, Tsutomu Onodera, Motoki Yamada
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Publication number: 20100234527Abstract: The present invention provides a sealant material for an optical semiconductor containing (A) one or more kinds of a (meth)acrylic compound selected from a (meth)acrylate-modified silicone oil, a long chain alkyl (meth)acrylate, and a polylakylene glycol (meth)acrylate having the number average molecular weight of 400 or more, (B) a (meth)acrylate compound having an ester bond with an alicyclic hydrocarbon group having 6 or more carbon atoms, and (C) a radical polymerization initiator; and an optoelectronic conversion element and an optoelectronic conversion device using thereof.Type: ApplicationFiled: April 19, 2007Publication date: September 16, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Tsuyoshi Ota, Shinichi Yukimasa, Yutaka Obata, Tomoaki Takebe
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Publication number: 20100190405Abstract: (1) An elastic nonwoven fabric and a fiber product using the elastic nonwoven fabric, the elastic nonwoven fabric containing a crystalline resin composition containing low crystalline polypropylene and high crystalline polypropylene, the low crystalline polypropylene satisfying items (a) and (b) below, and a crystallization temperature (Tc) of the crystalline resin composition measured with a differential scanning calorimeter (DSC) being from 20 to 100° C.: (a) a melting point (Tm-D) being from 0 to 120° C., which is defined as a peak top of a peak observed on the most high temperature side of a melt endothermic curve obtained by maintaining at ?10° C. for 5 minutes and increasing in temperature at 10° C.Type: ApplicationFiled: June 25, 2008Publication date: July 29, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Publication number: 20100022733Abstract: The present invention provides a copolymer for syrup, characterized by being formed from (A) 1 to 60 mass % of at least one (meth)acrylate compound selected from among a (meth)acrylate-modified silicone oil, an alkyl (meth)acrylate, a monoalkylene glycol (meth)acrylate, and a polyalkylene glycol (meth)acrylate, and (B) 99 to 40 mass % of a (meth)acrylate compound having a C?6 alicyclic hydrocarbon group bonded thereto via an ester bond; a (meth)acrylate composition containing a (meth)acrylate monomer and 1 to 60 mass % of the (meth)acrylate copolymer for syrup; and a cured product of the composition. The (meth)acrylate copolymer for syrup of the present invention has excellent solubility, particularly in a (meth)acrylate compound having an alicyclic ester substituent, and a (meth)acrylate resin composition containing the copolymer provides a stable cured product having high transparency and high resistance to UW rays and heat.Type: ApplicationFiled: November 19, 2007Publication date: January 28, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Tsuyoshi Ota, Shinichi Yukimasa, Yutaka Obata, Tomoaki Takebe
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Publication number: 20090098786Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).Type: ApplicationFiled: October 31, 2005Publication date: April 16, 2009Applicant: Idemitsu Kosan Co., Ltd.Inventors: Takeharu Tajima, Toshitaka Kanai, Tomoaki Takebe, Hiroshi Minami
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Publication number: 20090018288Abstract: Crosslinked olefin polymers which are reduced in stickiness and improved in rigidity, heat resistance, light resistance, and water resistance while retaining the molding properties such as injection moldability, spinnability, film-forming properties and the physical properties such as toughness (including elongation and break strength) and tackiness; and a process for the production thereof. Crosslinked olefin polymers which are obtained by reacting an ?-olefin polymer produced by polymerization of at least one ?-olefin having 6 or more carbon atoms or polymerization of at least one ?-olefin having 6 or more carbon atoms with at least one other ?-olefin with a crosslinking agent and which satisfy the following requirements: (1) the content of units of ?-olefins having 6 or more carbon atoms is 50 mol % or more, (2) the molecular weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) is 7.Type: ApplicationFiled: November 7, 2005Publication date: January 15, 2009Applicant: Idemitsu Kosan Co., Ltd.Inventors: Ryo Aburatani, Yutaka Obata, Tomoaki Takebe, Masanori Sera, Yutaka Minami
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Publication number: 20080119605Abstract: The present invention pertains to a master batch composition which contains 10 to 95% by mass of an additive for plastics, 1 to 50% by mass of an olefin polymer having specific physical properties, and 1 to 89% by mass of a polyolefin resin as a carrier, which is useful for producing a polyolefin resin, particularly an injection molded product of a polypropylene resin, which can improve dispersibility of additives in the polyolefin molded product, which permits high density filling of various additives in the master batch composition, and which is free of blocking. The present invention is also directed to a polyolefin resin composition in which the master batch composition is compounded in a polyolefin resin, and to a polyolefin molded product using the resin composition.Type: ApplicationFiled: November 22, 2005Publication date: May 22, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tomoaki Takebe, Yutaka Minami, Tsutomu Onodera, Motoki Yamada
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Publication number: 20080097072Abstract: The present invention provides an optical semiconductor sealing material comprising a radically polymerized polymer of a methacrylate ester having an alicyclic hydrocarbon group containing 7 or more carbon atoms e.g. an adamantyl group, a norbornyl group or a dicyclopentanyl group; and an optical semiconductor sealing material comprising a radically polymerized polymer of 50 to 97 mass % of the methacrylate ester and 3 to 50 mass % of acrylate ester having a hydroxyl group. The optical semiconductor sealing material of the present invention is highly transparent and stable to UV light and thus does not undergo yellowing. In addition, the material exhibits excellent compatibility between heat resistance and refractive index, does not undergo deformation or cracking during heating processes such as reflow soldering, and shows high processability.Type: ApplicationFiled: November 9, 2005Publication date: April 24, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tomoaki Takebe, Tsuyoshi Ota, Yutaka Obata, Hiroyuki Higuchi
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Publication number: 20080071048Abstract: A 1-butene polymer satisfying the following (1), (2) and either (3) or (3?): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [?] as measured in tetralin solvent at 135° C. is 0.01 to 0.5 dL/g. (2) The polymer is a crystalline resin having a melting point (Tm-D) of 0 to 100° C., the melting point being defined as the top of the peak observed on the highest-temperature side in a melting endothermic curve obtained with a differential scanning calorimeter (DSC) in a test in which a sample is held in a nitrogen atmosphere at ?10° C. for 5 min and then heated at a rate of 10° C./min. (3) The stereoregularity index {(mmmm)/(mmrr+rmmr)} is 30 or lower. (3?) The mesopentad content (mmmm) determined from a nuclear magnetic resonance (NMR) spectrum is 68 to 73%.Type: ApplicationFiled: September 21, 2007Publication date: March 20, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Yutaka MINAMI, Masami Kanamaru, Toyozo Fujioka, Tomoaki Takebe, Masao Inoue
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Patent number: 7309747Abstract: A 1-butene polymer satisfying the following (1), (2) and either (3) or (3?): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [?] as measured in tetralin solvent at 135° C. is 0.01 to 0.5 dL/g. (2) The polymer is a crystalline resin having a melting point (Tm-D) of 0 to 100° C., the melting point being defined as the top of the peak observed on the highest-temperature side in a melting endothermic curve obtained with a differential scanning calorimeter (DSC) in a test in which a sample is held in a nitrogen atmosphere at ?10° C. for 5 min and then heated at a rate of 10° C./min. (3) The stereoregularity index {(mmmm)/(mmrr+rmmr)} is 30 or lower. (3?) The mesopentad content (mmmm) determined from a nuclear magnetic resonance (NMR) spectrum is 68 to 73%.Type: GrantFiled: February 19, 2003Date of Patent: December 18, 2007Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Minami, Masami Kanamaru, Toyozo Fujioka, Tomoaki Takebe, Masao Inoue
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Patent number: 7109283Abstract: The present invention provides a crystalline higher ?-olefin copolymer obtained by copolymerizing at least two higher ?-olefins having 10 or more carbon atoms or at least one higher ?-olefin having 10 or more carbon atoms with at least one other olefin, wherein it satisfies certain conditions.Type: GrantFiled: January 4, 2006Date of Patent: September 19, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Minami, Takenori Fujimura, Masanori Sera, Tomoaki Takebe
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Publication number: 20060111526Abstract: An object of the present invention is to provide crystalline high ?-olefin copolymers which have excellent compatibility with thermoplastic resins, especially polyolefins, and compatibility with lubricant oils, fuel oils or waxes, excellent miscibility with inorganic fillers and secondary processability, and which have narrow temperature ranges for melting and crystallization, and to provide a process for preparation thereof. The present invention provides a crystalline higher ?-olefin copolymer obtained by copolymerizing at least two higher ?-olefins having 10 or more carbon atoms or at least one higher ?-olefin having 10 or more carbon atoms with at least one other olefin, wherein it satisfies the following (1) to (3): (1): the content of higher ?-olefin units is 50 mol % or greater, (2): the melting point (Tm) which is measured, by using a differential scanning calorimeter (DSC), from the melting endothermic curve obtained by maintaining the copolymer at 190° C.Type: ApplicationFiled: January 4, 2006Publication date: May 25, 2006Applicant: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Minami, Takenori Fujimura, Masanori Sera, Tomoaki Takebe
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Patent number: 7019091Abstract: The present invention provides a crystalline higher ?-olefin copolymer obtained by copolymerizing at least two higher ?-olefins having 10 or more carbon atoms or at least one higher ?-olefin having 10 or more carbon atoms with at least one other olefin, wherein it satisfies certain conditions.Type: GrantFiled: August 25, 2004Date of Patent: March 28, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Minami, Takenori Fujimura, Masanori Sera, Tomoaki Takebe
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Publication number: 20050119428Abstract: A 1-butene polymer satisfying the following (1), (2) and either (3) or (3?): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [?] as measured in tetralin solvent at 135° C. is 0.01 to 0.5 dL/g. (2) The polymer is a crystalline resin having a melting point (Tm-D) of 0 to 100° C., the melting point being defined as the top of the peak observed on the highest-temperature side in a melting endothermic curve obtained with a differential scanning calorimeter (DSC) in a test in which a sample is held in a nitrogen atmosphere at ?10° C. for 5 min and then heated at a rate of 10° C./min. (3) The stereoregularity index {(mmmm)/(mmrr+rmmr)} is 30 or lower. (3?) The mesopentad content (mmmm) determined from a nuclear magnetic resonance (NMR) spectrum is 68 to 73%.Type: ApplicationFiled: February 19, 2003Publication date: June 2, 2005Inventors: Yutaka Minami, Masami Kanamaru, Toyozo Fujioka, Tomoaki Takebe, Masao Inoue
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Publication number: 20050049373Abstract: An object of the present invention is to provide crystalline high ?-olefin copolymers which have excellent compatibility with thermoplastic resins, especially polyolefins, and compatibility with lubricant oils, fuel oils or waxes, excellent miscibility with inorganic fillers and secondary processability, and which have narrow temperature ranges for melting and crystallization, and to provide a process for preparation thereof. The present invention provides a crystalline higher ?-olefin copolymer obtained by copolymerizing at least two higher ?-olefins having 10 or more carbon atoms or at least one higher ?-olefin having 10 or more carbon atoms with at least one other olefin, wherein it satisfies the following (1) to (3): (1): the content of higher ?-olefin units is 50 mol % or greater, (2): the melting point (Tm) which is measured, by using a differential scanning calorimeter (DSC), from the melting endothermic curve obtained by maintaining the copolymer at 190° C.Type: ApplicationFiled: August 25, 2004Publication date: March 3, 2005Applicant: Idemitsu Kosan Co., Ltd.Inventors: Yutaka Minami, Takenori Fujimura, Masanori Sera, Tomoaki Takebe
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Patent number: 6433083Abstract: The present invention provides resin materials for producing molded products endowed with excellent heat resistance, solvent resistance, toughness, tensile elongation, and transparency. Specifically, there are provided aromatic vinyl resin materials which have the following properties: Storage elasticity values G′(1.0) and G′(0.1) as measured at 300° C., a strain &ggr; of 20%, and a frequency of 1.0 Hz or 0.1 Hz satisfy the expression, log[G′(1.0)/G′(0.1)]≦0.6, the heat of fusion &Dgr;H as measured over the range 200-295° C. is 8 to 50 (J/g), and the 1H-NMR peak integrated values for the fraction corresponding to the temperature range of not lower than 50° C., as collected from temperature rising election fraction on the Soxhlet extraction residue by use of cyclohexane or o-dichlorobenzene, satisfy the relation [1.8-2.1 (ppm)]/[1.0-1.7(ppm))<0.49.Type: GrantFiled: February 2, 2001Date of Patent: August 13, 2002Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Hideo Teshima, Tomoaki Takebe, Masanori Sera