Patents by Inventor Yoshiho Sonobe
Yoshiho Sonobe 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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Patent number: 8785574Abstract: According to the invention, a single or plural kinds of bridged metallocene compounds having differing cyclopentadienyl-derived groups afford macromonomers that are a source of long-chain branches and simultaneously catalyze the repolymerization of the macromonomers into olefin polymers having a large number of long-chain branches, small neck-in in the T-die extrusion, small take-up surge and superior mechanical strength. The olefin polymerization catalysts and the polymerization processes can efficiently produce the olefin polymers.Type: GrantFiled: December 20, 2013Date of Patent: July 22, 2014Assignees: Mitsui Chemicals, Inc., Prime Polymer Co., Ltd.Inventors: Hideki Bando, Yasuo Satoh, Takashi Yukita, Yasuyuki Harada, Yoshiho Sonobe, Yasushi Tohi, Yusuke Sekioka, Masao Suzuki, Daisuke Tanifuji
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Publication number: 20140114031Abstract: Metallocene compounds of the invention are useful as olefin polymerization catalysts or catalyst components. Olefin polymerization processes of the invention involve an olefin polymerization catalyst containing the metallocene compound. In detail, the olefin polymerization catalysts can catalyze with high polymerization activity the production of olefin polymers having high melt tension, excellent mechanical strength and good particle properties, and the olefin polymerization processes involve the catalysts. Ethylene polymers according to the invention are obtained by the polymerization processes and have higher processability and easy-opening properties and particularly excellent mechanical strength compared to conventional ethylene polymers. Thermoplastic resin compositions of the invention contain the ethylene polymers.Type: ApplicationFiled: December 20, 2013Publication date: April 24, 2014Applicant: Prime Polymer Co., Ltd.Inventors: Hideki BANDO, Yasuo SATOH, Takashi YUKITA, Yasuyuki HARADA, Yoshiho SONOBE, Yasushi TOHI, Yusuke SEKIOKA, Masao SUZUKI, Daisuke TANIFUJI
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Patent number: 7858723Abstract: Ethylene-based resin, which exhibits a satisfactorily high melt tension and can provide a molded object excellent in mechanical strength, the ethylene-based resin characterized in simultaneously satisfying the requirements [1] to [5] described below: [1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 0.1 to 100 g/10 minutes; [2] density (d) is in the range of 875 to 970 kg/m3; [3] ratio [MT/?*(g/P)] of melt tension [MT(g)] at 190° C. to shearing viscosity [?*(P)] at 200° C. at an angular velocity of 1.0 rad/sec. is in the range of 1.50×10?4 to 9.00×10?4; [4] sum [(A+B)(/1000C)] of the number of methyl branches [A(/1000C)] and the number of ethyl branches [B(/1000C)] per 1000 carbon atoms measured by 13C-NMR is 1.8 or less; and [5] zero shear viscosity [?0(P)] at 200° C. and weight-average molecular weight (Mw) measured by GPC-viscosity detector method (GPC-VISCO) satisfy the following relational expression (Eq-1): 0.01×10?13×Mw3.4??0?4.5×10?13×Mw3.4??(Eq-1).Type: GrantFiled: January 31, 2006Date of Patent: December 28, 2010Assignee: Mitsui Chemicals, Inc.Inventors: Yasuo Satoh, Hideki Bando, Yoshiho Sonobe, Masao Suzuki, Daisuke Tanifuji, Chiaki Tomata, Makoto Mitani
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Patent number: 7601423Abstract: Ethylene-based copolymer microparticles and functional group-containing ethylene-based copolymer microparticles that have particle diameter smaller than that of conventional polyethylene fine-particles, no inter-particle agglomeration, very narrow particle size distribution, and high sphericity are provided, in which requirements (A) to (E): (A) The intrinsic viscosity [?] measured in decalin at 135° C. is in the range of 0.1 to 50 dl/g, (B) at least 95 wt % or more of particles pass through a mesh screen with an opening of 37 ?m, (C) the median diameter (d50) measured by laser diffraction scattering is 3 ?m?d50?25 ?m, (D) the circularity coefficient is 0.85 or more, and (E) the variation coefficient of particle diameter (Cv) is 20% or less. Non-agglomerated spherical magnesium-containing microparticles used as magnesium-containing carrier component for olefin-polymerization catalysts that can manufacture the above microparticles are also provided.Type: GrantFiled: November 18, 2005Date of Patent: October 13, 2009Assignee: Mitsui Chemicals, Inc.Inventors: Yasushi Nakayama, Naoto Matsukawa, Junji Saito, Hideki Bando, Yoshiho Sonobe, Kenji Michiue, Makoto Mitani, Terunori Fujita
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Patent number: 7528091Abstract: Solid fine particles which contain a magnesium atom, an aluminum atom and a C1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 ?m, and an olefin polymerization catalyst containing the solid fine particles and a transition metal compound in the groups 3 to 11 in the periodic table, exhibit a very high olefin polymerization activity without combination with an expensive organoaluminum oxy compound or organoboron compound and maintains a high activity in polymerization for a long time, and an olefin polymer excellent in powdery properties can be produced by using the olefin polymerization catalyst. The transition metal compound in the groups 3 to 11 in the periodic table includes a transition metal compound having a ligand containing two or more atoms selected from a boron atom, a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom.Type: GrantFiled: June 29, 2007Date of Patent: May 5, 2009Assignee: Mitsui Chemicals, Inc.Inventors: Yasushi Nakayama, Hideki Bando, Yoshiho Sonobe, Makoto Mitani, Terunori Fujita
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Publication number: 20080090983Abstract: Ethylene-based resin, which exhibits a satisfactorily high melt tension and can provide a molded object excellent in mechanical strength, the ethylene-based resin characterized in simultaneously satisfying the requirements [1] to [5] described below: [1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 0.1 to 100 g/10 minutes; [2] density (d) is in the range of 875 to 970 kg/m3; [3] ratio [MT/?*(g/P)] of melt tension [MT(g)] at 190° C. to shearing viscosity [?*(P)] at 200° C. at an angular velocity of 1.0 rad/sec. is in the range of 1.50×10?4 to 9.00×10?4; [4] sum [(A+B)(/1000C)] of the number of methyl branches [A(/1000C)] and the number of ethyl branches [B(/1000C)] per 1000 carbon atoms measured by 13C-NMR is 1.8 or less; and [5] zero shear viscosity [?0(P)] at 200° C. and weight-average molecular weight (Mw) measured by GPC-viscosity detector method (GPC-VISCO) satisfy the following relational expression (Eq-1): 0.01×?13×Mw3.4??0?4.5×10?13×Mw3.Type: ApplicationFiled: January 31, 2006Publication date: April 17, 2008Inventors: Yasuo Satoh, Hideki Bando, Yoshiho Sonobe, Masao Suzuki, Daisuke Tanifuji, Chiaki Tomata, Makoto Mitani
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Publication number: 20080044655Abstract: Ethylene-based copolymer microparticles and functional group-containing ethylene-based copolymer microparticles that have particle diameter smaller than that of conventional polyethylene fine-particles, no inter-particle agglomeration, very narrow particle size distribution, and high sphericity are provided, in which requirements (A) to (E): (A) The intrinsic viscosity [?] measured in decalin at 135° C. is in the range of 0.1 to 50 dl/g, (B) at least 95 wt % or more of particles pass through a mesh screen with an opening of 37 ?m, (C) the median diameter (d50) measured by laser diffraction scattering is 3 ?m?d50?25 ?m, (D) the circularity coefficient is 0.85 or more, and (E) the variation coefficient of particle diameter (Cv) is 20% or less. Non-agglomerated spherical magnesium-containing microparticles used as magnesium-containing carrier component for olefin-polymerization catalysts that can manufacture the above microparticles are also provided.Type: ApplicationFiled: November 18, 2005Publication date: February 21, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Yasushi Nakayama, Naoto Matsukawa, Junji Saito, Hideki Bando, Yoshiho Sonobe, Kenji Michiue, Makoto Mitani, Terunori Fujita
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Publication number: 20080015401Abstract: Solid fine particles which contain a magnesium atom, an aluminum atom and a C1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 ?m, and an olefin polymerization catalyst containing the solid fine particles and a transition metal compound in the groups 3 to 11 in the periodic table, exhibit a very high olefin polymerization activity without combination with an expensive organoaluminum oxy compound or organoboron compound and maintains a high activity in polymerization for a long time, and an olefin polymer excellent in powdery properties can be produced by using the olefin polymerization catalyst. The transition metal compound in the groups 3 to 11 in the periodic table includes a transition metal compound having a ligand containing two or more atoms selected from a boron atom, a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom.Type: ApplicationFiled: June 29, 2007Publication date: January 17, 2008Inventors: Yasushi Nakayama, Hideki Bando, Yoshiho Sonobe, Makoto Mitani, Terunori Fujita
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Patent number: 7253132Abstract: Solid fine particles which contain a magnesium atom, an aluminum atom and a C1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 ?m, and an olefin polymerization catalyst containing the solid fine particles and a transition metal compound in the groups 3 to 11 in the periodic table, exhibit a very high olefin polymerization activity without combination with an expensive organoaluminum oxy compound or organoboron compound and maintains a high activity in polymerization for a long time, and an olefin polymer excellent in powdery properties can be produced by using the olefin polymerization catalyst. The transition metal compound in the groups 3 to 11 in the periodic table includes a transition metal compound having a ligand containing two or more atoms selected from a boron atom, a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom.Type: GrantFiled: October 20, 2003Date of Patent: August 7, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Yasushi Nakayama, Hideki Bando, Yoshiho Sonobe, Makoto Mitani, Terunori Fujita
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Patent number: 7208559Abstract: An ethylene-based polymer which is an ethylene/C4 to C10 ?-olefin copolymer and satisfies the following requirements [k1] to [k3]: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 1.0 to 50 g/10 minutes; [k2] LNR defined as a scale of neck-in upon film molding is in the range of 0.6 to 1.4; and [k3] take-up speed at break [DS (m/min)] at 160° C. and melt flow rate (MFR) satisfy the following relationship (Eq-1): 12×MFR0.577?DS?165×MFR0.577 (Eq-1), and a thermoplastic resin composition containing the ethylene-based polymer, provide a molded product, preferably a film, excellent in moldability and mechanical strength.Type: GrantFiled: December 15, 2003Date of Patent: April 24, 2007Assignee: Mitsui Chemicals, Inc.Inventors: Yasuo Satoh, Mamoru Takahashi, Hideki Bando, Yoshiho Sonobe, Yasushi Nakayama
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Publication number: 20060155083Abstract: Solid fine particles which contain a magnesium atom, an aluminum atom and a C1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3 to 80 ?m, and an olefin polymerization catalyst containing the solid fine particles and a transition metal compound in the groups 3 to 11 in the periodic table, exhibit a very high olefin polymerization activity without combination with an expensive organoaluminum oxy compound or organoboron compound and maintains a high activity in polymerization for a long time, and an olefin polymer excellent in powdery properties can be produced by using the olefin polymerization catalyst. The transition metal compound in the groups 3 to 11 in the periodic table includes a transition metal compound having a ligand containing two or more atoms selected from a boron atom, a nitrogen atom, an oxygen atom, a phosphorus atom and a sulfur atom.Type: ApplicationFiled: October 20, 2003Publication date: July 13, 2006Applicant: MITSUI CHEMICALS, INC.Inventors: Yasushi Nakayama, Hideki Bando, Yoshiho Sonobe, Makoto Mitani, Terunori Fujita
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Publication number: 20060135712Abstract: An ethylene-based polymer which is an ethylene/C4 to C10 ?-olefin copolymer and satisfies the following requirements [k1] to [k3]: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 1.0 to 50 g/10 minutes; [k2] LNR defined as a scale of neck-in upon film molding is in the range of 0.6 to 1.4; and [k3] take-up speed at break [DS (m/min)] at 160° C. and melt flow rate (MFR) satisfy the following relationship (Eq-1): 12×MFR0.577?DS?165×MFR0.577 (Eq-1), and a thermoplastic resin composition containing the ethylene-based polymer, provide a molded product, preferably a film, excellent in moldability and mechanical strength.Type: ApplicationFiled: December 15, 2003Publication date: June 22, 2006Inventors: Yasuo Satoh, Mamoru Takahashi, Hideki Bando, Yoshiho Sonobe, Yasushi Nakayama
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Patent number: 6936684Abstract: A salt useful as an active species in an organic reaction and represented by the following chemical formula (1): wherein n stands for an integer of from 1 to 8, Zn? represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. In addition, a simple and efficient process is provided for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).Type: GrantFiled: June 11, 2003Date of Patent: August 30, 2005Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Tadahito Nobori, Masahiro Kouno, Toshiaki Suzuki, Kazumi Mizutani, Shinji Kiyono, Yoshiho Sonobe, Usaji Takaki
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Patent number: 6897176Abstract: A novel olefin polymerization catalyst is provided which comprises (A) a transition metal compound or lanthanoid compound containing two or more atoms selected from the group consisting of boron, nitrogen, oxygen, phosphorus, sulfur, and selenium; and (B) a Lewis acid. A process for producing an olefin polymer is also provided. The catalyst has a high olefin polymerization activity without a combined use of an expensive organoaluminum oxy-compound or organoboron compound, and can maintain the high activity for a long polymerization time.Type: GrantFiled: February 21, 2002Date of Patent: May 24, 2005Assignee: Mitsui Chemicals, Inc.Inventors: Yasushi Nakayama, Hideyuki Kaneko, Hideki Bandoh, Yoshiho Sonobe, Junji Saito, Shinichi Kojoh, Makoto Mitani, Yasuhiko Suzuki, Shigekazu Matsui, Norio Kashiwa, Terunori Fujita
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Patent number: 6664365Abstract: The present invention provides a novel salt useful as an active species in an organic reaction and represented by the following chemical formula (1): wherein n stands for an integer of from 1 to 8, Zn− represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. Also disclosed is a simple and efficient process for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).Type: GrantFiled: September 3, 1999Date of Patent: December 16, 2003Inventors: Tadahito Nobori, Masahiro Kouno, Toshiaki Suzuki, Kazumi Mizutani, Shinji Kiyono, Yoshiho Sonobe, Usaji Takaki
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Publication number: 20030225244Abstract: The present invention provides a novel salt useful as an active species in an organic reaction and represented by the following chemical formula (1): 1Type: ApplicationFiled: June 11, 2003Publication date: December 4, 2003Applicant: Mitsui Chemicals, Inc.Inventors: Tadahito Nobori, Masahiro Kouno, Toshiaki Suzuki, Kazumi Mizutani, Shinji Kiyono, Yoshiho Sonobe, Usaji Takaki
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Publication number: 20030105361Abstract: The present invention provides a novel salt useful as an active species in an organic reaction and represented by the following chemical formula (1): 1Type: ApplicationFiled: August 2, 1999Publication date: June 5, 2003Inventors: TADAHITO NOBORI, MASAHIRO KOUNO, TOSHIAKI SUZUKI, KAZUMI MIZUTANI, SHINJI KIYONO, YOSHIHO SONOBE, USAJI TAKAKI
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Publication number: 20020169072Abstract: A novel olefin polymerization catalyst is provided which comprises (A) a transition metal compound or lanthanoid compound containing two or more atoms selected from the group consisting of boron, nitrogen, oxygen, phosphorus, sulfur, and selenium; and (B) a Lewis acid. A process for producing an olefin polymer is also provided. The catalyst has a high olefin polymerization activity without a combined use of an expensive organoaluminum oxy-compound or organoboron compound, and can maintain the high activity for a long polymerization time.Type: ApplicationFiled: February 21, 2002Publication date: November 14, 2002Inventors: Yasushi Nakayama, Hideyuki Kaneko, Hideki Bandoh, Yoshiho Sonobe, Junji Saito, Shinichi Kojoh, Makoto Mitani, Yasuhiko Suzuki, Shigekazu Matsui, Norio Kashiwa, Terunori Fujita
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Patent number: 5990352Abstract: A salt useful as an active species in an organic reaction and represented by the following chemical formula (1): ##STR1## wherein n stands for an integer of from 1 to 8, Z.sup.n- represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. In addition, a simple and efficient process is provided for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).Type: GrantFiled: February 5, 1997Date of Patent: November 23, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Tadahito Nobori, Masahiro Kouno, Toshiaki Suzuki, Kazumi Mizutani, Shinji Kiyono, Yoshiho Sonobe, Usaji Takaki
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Patent number: 5677409Abstract: Described herein are propylene waxes and a production process thereof. The waxes are each produced by polymerizing propylene in a reaction vessel while using a solid catalyst in the presence or absence of an organoaluminum compound. A hydrogen partial pressure of a gas phase in the reaction vessel, said gas phase being formed of the propylene and hydrogen, is maintained at 10% or higher. The solid catalyst is formed of a transition metal compound or a reaction product between the transition metal compound and an organometallic compound, an aluminoxane and a fine particulate carrier. Also described herein is a heating-roll fixing type toner composition composed essentially of a binder resin or a binder resin composition, a colorant and, as a releasing agent, the wax.Type: GrantFiled: May 8, 1995Date of Patent: October 14, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Norihide Inoue, Masahiro Kouno, Yoshiho Sonobe, Kazumi Mizutani, Tetsunosuke Shiomura, Nobuhiro Hirayama