Patents by Inventor Atsushi Shibahara
Atsushi Shibahara 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: 20240114929Abstract: Producing a feed additive composition for ruminants having a particle size of not less than 0.5 mm and not more than 2 mm, by granulating, in water, a molten mixture containing (A) at least one component selected from a hydrogenated vegetable oil and a hydrogenated animal oil each having a melting point of higher than 50° C. and lower than 90° C., (B) lecithin, and (C) at least one biologically active substance having solubility of not less than 0.001 g and not more than 60 g in 100 g of water at 20° C. affords a feed additive composition provided with high protection in rumen, and which is superior in dissolution in the lower gastrointestinal tract.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Applicant: AJINOMOTO CO., INC.Inventors: Susumu SHIBAHARA, Masayuki TANAKA, Atsushi HARUNO
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Publication number: 20220145052Abstract: A propylene resin composition includes a propylene polymer (A) satisfying requirements (1) to (3) below: (1) having a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) of 5000 to 22000; (2) having a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) being 1.2 to 3.5; and (3) having a proportion of a component eluted at a temperature of not more than ?20° C. in temperature rising elution fractionation (TREF) being not more than 3.5 mass %.Type: ApplicationFiled: March 17, 2020Publication date: May 12, 2022Applicants: MITSUI CHEMICALS, INC., PRIME POLYMER CO., LTD.Inventors: Keita ITAKURA, Katsuhiko KOIKE, Ryoko HIROI, Hiroyuki FUKUSHIMA, Kou TSURUGI, Atsushi SHIBAHARA, Fumiaki NISHINO, Kohei TANAKA, Yasuhiro KAI, Naoya NODA, Kenji MICHIUE, Takanori FURUTA
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Patent number: 10870715Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).Type: GrantFiled: October 25, 2018Date of Patent: December 22, 2020Assignee: MITSUI CHEMICALS, INC.Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
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Publication number: 20190062470Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).Type: ApplicationFiled: October 25, 2018Publication date: February 28, 2019Applicant: MITSUI CHEMICALS, INC.Inventors: Kou TSURUGI, Shiori HANADA, Atsushi SHIBAHARA, Kazumori KAWAMURA, Fumiaki NISHINO, Yasuyuki HARADA, Wataru YAMADA, Akiko MATSUMOTO, Isao HARA, Tatsuya NAKAMURA, Toshihiro MUROTO
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Patent number: 10150823Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).Type: GrantFiled: May 5, 2017Date of Patent: December 11, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
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Publication number: 20170240664Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).Type: ApplicationFiled: May 5, 2017Publication date: August 24, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Kou TSURUGI, Shiori HANADA, Atsushi SHIBAHARA, Kazumori KAWAMURA, Fumiaki NISHINO, Yasuyuki HARADA, Wataru YAMADA, Akiko MATSUMOTO, Isao HARA, Tatsuya NAKAMURA, Toshihiro MUROTO
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Patent number: 9676879Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).Type: GrantFiled: February 7, 2014Date of Patent: June 13, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Kou Tsurugi, Shiori Hanada, Atsushi Shibahara, Kazumori Kawamura, Fumiaki Nishino, Yasuyuki Harada, Wataru Yamada, Akiko Matsumoto, Isao Hara, Tatsuya Nakamura, Toshihiro Muroto
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Patent number: 9616421Abstract: The objectives of the present invention are to provide an olefin oligomerization catalyst that allows properties of particles of a polymer component by-produced in an ?-olefin production process to be obtained in such a shape that does not negatively affect a separation process for the particles and to provide a method for producing an olefin oligomer performed in the presence of the olefin oligomerization catalyst. The objectives can be achieved by the olefin oligomerization catalyst obtained by contacting (D) a transition metal compound with a preliminary contact solid catalyst component (II) obtained by contacting a solid catalyst component (I) formed by supporting (B) an organoaluminum oxy-compound (b-2) on (A) a solid carrier with (C) at least one compound selected from the group consisting of an organometallic compound (c-1), an organoaluminum oxy-compound (c-2), and a compound (c-3) that reacts with the transition metal compound (D) to form a pair of ion.Type: GrantFiled: February 26, 2014Date of Patent: April 11, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Yasunori Saito, Atsushi Shibahara, Isao Hara, Kazumori Kawamura
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Publication number: 20160001278Abstract: The objectives of the present invention are to provide an olefin oligomerization catalyst that allows properties of particles of a polymer component by-produced in an ?-olefin production process to be obtained in such a shape that does not negatively affect a separation process for the particles and to provide a method for producing an olefin oligomer performed in the presence of the olefin oligomerization catalyst. The objectives can be achieved by the olefin oligomerization catalyst obtained by contacting (D) a transition metal compound with a preliminary contact solid catalyst component (II) obtained by contacting a solid catalyst component (I) formed by supporting (B) an organoaluminum oxy-compound (b-2) on (A) a solid carrier with (C) at least one compound selected from the group consisting of an organometallic compound (c-1), an organoaluminum oxy-compound (c-2), and a compound (c-3) that reacts with the transition metal compound (D) to form a pair of ion.Type: ApplicationFiled: February 26, 2014Publication date: January 7, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Yasunori SAITO, Atsushi SHIBAHARA, Isao HARA, Kazumori KAWAMURA
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Publication number: 20150376306Abstract: An object of the invention is to provide a solid polyaluminoxane composition suitably used as a cocatalyst and a catalyst carrier in combination with an olefin oligomerization or polymerization catalyst, without the use of solid inorganic carriers such as silica. The solid polyaluminoxane composition of the invention includes a polyalkylaluminoxane and a trialkylaluminum, and has a solubility in n-hexane at 25° C. of less than 0.50 mol % as measured by a specific method (i), a solubility in toluene at 25° C. of less than 1.0 mol % as measured by a specific method (ii), and a 13 mol % or more molar fraction of alkyl groups derived from the trialkylaluminum moieties relative to the total number of moles of alkyl groups derived from the polyalkylaluminoxane moieties and the alkyl groups derived from the trialkylaluminum moieties as measured with respect to tetrahydrofuran-d8 soluble components by a specific method (iii).Type: ApplicationFiled: February 7, 2014Publication date: December 31, 2015Applicant: Mitsui Chemicals, Inc.Inventors: Kou TSURUGI, Siori HANADA, Atsushi SHIBAHARA, Kazumori KAWAMURA, Fumiaki NISHINO, Yasuyuki HARADA, Wataru YAMADA, Akiko MATSUMOTO, Isao HARA, Tatsuya NAKAMURA, Toshihiro MUROTO
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Patent number: 8629075Abstract: The present invention provides a process for producing an ?-olefin polymer comprising polymerizing or copolymerizing (a) C3 or higher ?-olefin(s) in the presence of an olefin polymerization catalyst comprising solid titanium catalyst component (I) containing titanium, magnesium, halogen, and a compound with a specific structure having two or more ether linkages and organometallic catalyst component (II) with high catalytic activity. In this process, particularly even in (co)polymerizing (a) higher olefin(s), demineralization is unnecessary. A 4-methyl-1-pentene-based polymer obtained by polymerization using the catalyst of the present invention is excellent in tacticity, transparency, heat resistance, and releasability, and the polymer is particularly suitable for a release film.Type: GrantFiled: August 6, 2010Date of Patent: January 14, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Tetsuhiro Matsumoto, Toshiyuki Tsutsui, Kisu Ro, Kourei Kuroiwa, Takushi Nagata, Atsushi Shibahara, Tatsuya Nakamura, Tetsunori Shinozaki
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Patent number: 8258361Abstract: The invention provides transition metal complex compounds, high-activity olefin oligomerization catalysts containing the compounds, and olefin oligomerization processes using the catalysts. A transition metal complex compound [A] according to the invention is represented by Formula (I) or Formula (I?) below. An olefin oligomerization catalyst includes the transition metal complex compound [A]. In an olefin oligomerization process of the invention, an olefin is oligomerized in the presence of the catalyst.Type: GrantFiled: June 27, 2008Date of Patent: September 4, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Yasuhiko Suzuki, Shinsuke Kinoshita, Atsushi Shibahara, Naritoshi Yoshimura, Isao Hara, Tetsuya Hamada, Kazumori Kawamura, Kou Tsurugi, Yasunori Saito, Seiichi Ishii, Yasushi Nakayama, Naoto Matsukawa, Susumu Murata
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Publication number: 20110082325Abstract: The invention provides transition metal complex compounds, high-activity olefin oligomerization catalysts containing the compounds, and olefin oligomerization processes using the catalysts. A transition metal complex compound [A] according to the invention is represented by Formula (I) or Formula (I?) below. An olefin oligomerization catalyst includes the transition metal complex compound [A]. In an olefin oligomerization process of the invention, an olefin is oligomerized in the presence of the catalyst.Type: ApplicationFiled: June 27, 2008Publication date: April 7, 2011Inventors: Yasuhiko Suzuki, Shinsuke Kinoshita, Atsushi Shibahara, Naritoshi Yoshimura, Isao Hara, Tetsuya Hamada, Kazumori Kawamura, Kou Tsurugi, Yasunori Saito, Seiichi Ishii, Yasushi Nakayama, Naoto Matsukawa, Susumu Murata
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Patent number: 7888437Abstract: The process for producing an olefin polymer according to the present invention is characterized in that it comprises polymerizing an olefin having 3 or more carbon atoms in the presence of a catalyst for olefin polymerization containing a solid titanium catalyst component (I) which contains titanium, magnesium, halogen, and a cyclic ester compound (a) specified by the following formula (1): wherein n is an integer of 5 to 10, R2 and R3 are each independently COOR1 or a hydrogen atom, and at least one of R2 and R3 is COOR1; and R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms, and a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is a hydrogen atom) in the cyclic backbone may be replaced with a double bond, and an organometallic compound catalyst component (II), at an internal pressure of the polymerization vessel which is 0.25 times or more as high as the saturation vapor pressure of the olefin at a polymerization temperature.Type: GrantFiled: January 19, 2006Date of Patent: February 15, 2011Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Patent number: 7888438Abstract: A catalyst for olefin polymerization of the present invention includes a solid titanium catalyst component (I) including titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is a hydrogen atom, and an organometal compound catalyst component (II). When this catalyst for olefin polymerization is used, an olefin polymer having a broad molecular weight distribution can be produced.Type: GrantFiled: July 26, 2007Date of Patent: February 15, 2011Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Publication number: 20100324239Abstract: The present invention provides a process for producing an ?-olefin polymer comprising polymerizing or copolymerizing (a) C3 or higher ?-olefin(s) in the presence of an olefin polymerization catalyst comprising solid titanium catalyst component (I) containing titanium, magnesium, halogen, and a compound with a specific structure having two or more ether linkages and organometallic catalyst component (II) with high catalytic activity. In this process, particularly even in (co)polymerizing (a) higher olefin(s), demineralization is unnecessary. A 4-methyl-1-pentene-based polymer obtained by polymerization using the catalyst of the present invention is excellent in tacticity, transparency, heat resistance, and releasability, and the polymer is particularly suitable for a release film.Type: ApplicationFiled: August 6, 2010Publication date: December 23, 2010Applicant: Mitsui Chemicals, Inc.Inventors: Tetsuhiro Matsumoto, Toshiyuki Tsutsui, Kisu Ro, Kourei Kuroiwa, Takushi Nagata, Atsushi Shibahara, Tatsuya Nakamura, Tetsunori Shinozaki
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Patent number: 7649062Abstract: A solid titanium catalyst component (I) of the present invention is characterized in that it contains titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is not a hydrogen atom. When using this solid titanium catalyst component (I), an olefin polymer having a broad molecular weight distribution can be produced.Type: GrantFiled: July 26, 2007Date of Patent: January 19, 2010Assignee: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Publication number: 20090069515Abstract: A solid titanium catalyst component (I) of the present invention is characterized in that it contains titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is not a hydrogen atom. When using this solid titanium catalyst component (I), an olefin polymer having a broad molecular weight distribution can be produced.Type: ApplicationFiled: January 19, 2006Publication date: March 12, 2009Applicant: MITSUI CHEMICALS,INC.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Publication number: 20080306228Abstract: The process for producing an olefin polymer according to the present invention is characterized in that it comprises polymerizing an olefin having 3 or more carbon atoms in the presence of a catalyst for olefin polymerization containing a solid titanium catalyst component (I) which contains titanium, magnesium, halogen, and a cyclic ester compound (a) specified by the following formula (1): wherein n is an integer of 5 to 10, R2 and R3 are each independently COOR1 or a hydrogen atom, and at least one of R2 and R3 is COOR1; and R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms, and a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is a hydrogen atom) in the cyclic backbone may be replaced with a double bond, and an organometallic compound catalyst component (II), at an internal pressure of the polymerization vessel which is 0.25 times or more as high as the saturation vapor pressure of the olefin at a polymerization temperature.Type: ApplicationFiled: January 19, 2006Publication date: December 11, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki
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Publication number: 20080125555Abstract: A catalyst for olefin polymerization of the present invention includes a solid titanium catalyst component (I) including titanium, magnesium, halogen, and a cyclic ester compound (a) represented by the following formula (1): wherein n is an integer of 5 to 10; R2 and R3 are each independently COOR1 or R, and at least one of R2 and R3 is COOR1; a single bond (excluding Ca—Ca bonds, and a Ca—Cb bond in the case where R3 is R) in the cyclic backbone may be replaced with a double bond; a plurality of R1's are each independently a monovalent hydrocarbon group having 1 to 20 carbon atoms; and a plurality of R's are each independently a hydrogen atom or a substituent, but at least one of R's is not a hydrogen atom, and an organometal compound catalyst component (II). When this catalyst for olefin polymerization is used, an olefin polymer having a broad molecular weight distribution can be produced.Type: ApplicationFiled: July 26, 2007Publication date: May 29, 2008Applicant: Mitsui Chemicals, Inc.Inventors: Kazuhisa Matsunaga, Hisao Hashida, Toshiyuki Tsutsui, Kunio Yamamoto, Atsushi Shibahara, Tetsunori Shinozaki