Patents by Inventor Yasushi YANAGIMOTO
Yasushi YANAGIMOTO 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: 20220162369Abstract: The present invention relates to an olefin resin including a copolymer of an olefin macromonomer with a non-conjugated diene.Type: ApplicationFiled: March 6, 2020Publication date: May 26, 2022Applicant: MITSUI CHEMICALS, INC.Inventors: Seiya KIKUCHI, Yasushi YANAGIMOTO
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Patent number: 10435494Abstract: A novel ethylene/?-olefin/non-conjugated polyene copolymer comprising structural units derived from ethylene (A), an ?-olefin (B) of 3 to 20 carbon atoms, and a non-conjugated polyene (C) containing intramolecularly two or more partial structures in total selected from the group consisting of structures of Formulae (I) and (II), and having a small number of long-chain branches, The novel ethylene/?-olefin/non-conjugated polyene copolymer contains a non-conjugated polyene such as VNB as a copolymerization component and a small long-chain branch content and is excellent in curing properties in the case of crosslinking using peroxide; and a process for producing the ethylene/?-olefin/non-conjugated polyene copolymer, and a use thereof are provided.Type: GrantFiled: July 9, 2018Date of Patent: October 8, 2019Assignee: MITSUI CHEMICALS, INC.Inventors: Kotaro Ichino, Yoshiharu Kikuchi, Yasushi Tohi, Tomoaki Matsugi, Yasushi Yanagimoto, Mitsunao Arino, Keisuke Shishido, Mikio Hosoya
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Publication number: 20190264014Abstract: A thermoplastic elastomer composition including: a crystalline olefin resin (A) having a melting point of 100° C. or more; an olefin resin (B) satisfying requirements (B-1) to (B-3); and an ethylene/?-olefin copolymer (C), the weight ratio of (A)/((B)+(C)) is from 70/30 to 30/70, and the weight ratio of (B)/(C) is from 100/0 to 1/99: (B-1) the resin (B) has a main chain of an ethylene copolymer and a side chain of an ethylene polymer or a propylene polymer, the ethylene copolymer includes repeating units derived from ethylene and repeating units derived from at least one ?-olefin having 3 to 20 carbon atoms, and the repeating units derived from the ?-olefin contained within the range of 10 to 50 mol % to the total repeating units in the main chain; (B-2) the melting point measured by DSC rom 60° C. to 170° C.; and (B-3) Tg measured by DSC from ?80° C. to ?30° C.Type: ApplicationFiled: June 8, 2017Publication date: August 29, 2019Applicant: MITSUI CHEMICALS, INC.Inventors: Masatoshi SASAKI, Hayato KURITA, Tomoaki MATSUGI, Yasushi YANAGIMOTO, Tatsuya NAKAMURA
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Patent number: 10131726Abstract: A novel ethylene/?-olefin/non-conjugated polyene copolymer comprising structural units derived from ethylene (A), an ?-olefin (B) of 3 to 20 carbon atoms, and a non-conjugated polyene (C) containing intramolecularly two or more partial structures in total selected from the group consisting of structures of Formulae (I) and (II), and having a small number of long-chain branches, The novel ethylene/?-olefin/non-conjugated polyene copolymer contains a non-conjugated polyene such as VNB as a copolymerization component and a small long-chain branch content and is excellent in curing properties in the case of crosslinking using peroxide; and a process for producing the ethylene/?-olefin/non-conjugated polyene copolymer, and a use thereof are provided.Type: GrantFiled: February 13, 2015Date of Patent: November 20, 2018Assignee: MITSUI CHEMICALS, INC.Inventors: Kotaro Ichino, Yoshiharu Kikuchi, Yasushi Tohi, Tomoaki Matsugi, Yasushi Yanagimoto, Mitsunao Arino, Keisuke Shishido, Mikio Hosoya
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Publication number: 20180319917Abstract: A novel ethylene/?-olefin/non-conjugated polyene copolymer comprising structural units derived from ethylene (A), an ?-olefin (B) of 3 to 20 carbon atoms, and a non-conjugated polyene (C) containing intramolecularly two or more partial structures in total selected from the group consisting of structures of Formulae (I) and (II), and having a small number of long-chain branches, The novel ethylene/?-olefin/non-conjugated polyene copolymer contains a non-conjugated polyene such as VNB as a copolymerization component and a small long-chain branch content and is excellent in curing properties in the case of crosslinking using peroxide; and a process for producing the ethylene/?-olefin/non-conjugated polyene copolymer, and a use thereof are provided.Type: ApplicationFiled: July 9, 2018Publication date: November 8, 2018Applicant: MITSUI CHEMICALS, INC.Inventors: Kotaro ICHINO, Yoshiharu KIKUCHI, Yasushi TOHI, Tomoaki MATSUGI, Yasushi YANAGIMOTO, Mitsunao ARINO, Keisuke SHISHIDO, Mikio HOSOYA
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Publication number: 20180320102Abstract: A viscosity modifier for lubricating oils according to the present invention contains a resin (?), wherein the resin (?) satisfies specific requirements, and contains a grafted olefin polymer [R1] which is composed of a main chain and a side chain(s) and which satisfies the following requirements (i) and (ii). (i) The main chain is composed of a copolymer of ethylene and at least one ?-olefin selected from ?-olefins having from 3 to 12 carbon atoms, and contains the structural units derived from ethylene within the range of from 74 to 86 mol %. (ii) The side chain(s) is/are composed of a copolymer of ethylene and at least one ?-olefin selected from ?-olefins having from 3 to 12 carbon atoms, and contain(s) the structural units derived from ethylene within the range of from 30 to 65 mol %.Type: ApplicationFiled: November 7, 2016Publication date: November 8, 2018Applicant: MITSUI CHEMICALS, INC.Inventors: Akio HAYAKAWA, Yasushi YANAGIMOTO, Atsushi YAMAMOTO, Tatsuya NAKAMURA, Tomoaki MATSUGI, Keiji OKADA
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Patent number: 9771448Abstract: An olefin resin having requirements (I) to (VI) is provided: (I) a grafted olefin polymer containing a main chain with an ethylene/?-olefin copolymer and a side chain with a propylene polymer; (II) the ratio P wt % of propylene polymer is from 5 to 60 wt %; (III) when the ratio of the amount of a component(s) having a peak temperature of a differential elution curve as measured by CFC using o-dichlorobenzene of less that 65° C., to the amount of (?) taken as E wt %, the value a represented by an equation (Eq-1), is 1.4 or more; (IV) the melting point (Tm) is 120 to 165° C. and the glass transition temperature (Tg) is ?80 to ?30° C., as measured by DSC; (V) the hot xylene-insoluble content is less than 3 wt %; and, (VI) the limiting viscosity as measured in decalin at 135° C. is 0.5 to 5.0 dl/g.Type: GrantFiled: March 26, 2015Date of Patent: September 26, 2017Assignee: Mitsui Chemicals, Inc.Inventors: Yasushi Yanagimoto, Tomoaki Matsugi, Akihiko Iwashita, Tatsuya Nakamura, Keita Itakura, Ryoichi Tsunori
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Patent number: 9714306Abstract: The present invention provides an olefin resin with an improved heat resistance, reduced stickiness, excellent optical and low temperature properties, as well as the balance between these physical properties. The olefin resin according to the present invention satisfies the following requirements: (I) a melting peak (Tm) is observed within the range of from 60° C. to 130° C., and the heat of fusion ?H at the melting peak is within the range of from 5 to 150 J/g; (II) the percentage E (wt %) of a portion soluble in o-dichlorobenzene at 20° C. or lower, and the heat of fusion ?H satisfy certain relationships; (III) the glass transition temperature (Tg) is from ?80 to ?30° C.Type: GrantFiled: March 26, 2015Date of Patent: July 25, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Yasushi Yanagimoto, Tomoaki Matsugi, Akihiko Iwashita, Tatsuya Nakamura, Junji Saito
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Patent number: 9670346Abstract: An object of the present invention is to provide a propylene-based resin composition capable of providing a molded article having an excellent balance between rigidity and impact resistance. The object can be achieved by a propylene-based resin composition including an olefin-based resin characterized by including a grafted ethylene-based copolymer having an ethylene polymer as a side chain.Type: GrantFiled: December 9, 2015Date of Patent: June 6, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Keita Itakura, Akiko Odawara, Satoru Kinouchi, Tateo Takashima, Ryoichi Tsunori, Tomoaki Matsugi, Yasushi Yanagimoto, Tatsuya Nakamura
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Publication number: 20170101492Abstract: The present invention provides an olefin resin with an improved heat resistance, reduced stickiness, excellent optical and low temperature properties, as well as the balance between these physical properties. The olefin resin according to the present invention satisfies the following requirements: (I) a melting peak (Tm) is observed within the range of from 60° C. to 130° C., and the heat of fusion ?H at the melting peak is within the range of from 5 to 150 J/g; (II) the percentage E (wt %) of a portion soluble in o-dichlorobenzene at 20° C. or lower, and the heat of fusion ?H satisfy certain relationships; (III) the glass transition temperature (Tg) is from ?80 to ?30° C.Type: ApplicationFiled: March 26, 2015Publication date: April 13, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Yasushi YANAGIMOTO, Tomoaki MATSUGI, Akihiko IWASHITA, Tatsuya NAKAMURA, Junji SAITO
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Publication number: 20170096514Abstract: The present invention provides an olefin resin (?) satisfying the following requirements (I) to (VI), and a propylene resin composition including the same. (I) (?) includes a grafted olefin polymer [R1] containing a main chain composed of an ethylene/?-olefin copolymer and a side chain composed of a propylene polymer. (II) The ratio P wt % of the amount of the propylene polymer contained in (?) is from 5 to 60 wt %. (III) When the ratio of the amount of a component(s) having a peak temperature of a differential elution curve as measured by cross-fractionation chromatography (CFC) using o-dichlorobenzene as a solvent of less than 65° C., to the amount of (?) is taken as E wt %, the value a represented by the following equation (Eq-1), in relation to the ratio E and the ratio P, is 1.4 or more. (IV) The melting point (Tm) and the glass transition temperature (Tg), as measured by differential scanning calorimetry (DSC), are from 120 to 165° C. and from ?80 to ?30° C., respectively.Type: ApplicationFiled: March 26, 2015Publication date: April 6, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Yasushi YANAGIMOTO, Tomoaki MATSUGI, Akihiko IWASHITA, Tatsuya NAKAMURA, Keita ITAKURA, Ryoichi TSUNORI
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Publication number: 20170081509Abstract: An object of the present invention is to provide a propylene-based resin composition capable of providing a molded article having an excellent balance between rigidity and impact resistance. The object can be achieved by a propylene-based resin composition including an olefin-based resin characterized by including a grafted ethylene-based copolymer having an ethylene polymer as a side chain.Type: ApplicationFiled: December 9, 2015Publication date: March 23, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Keita ITAKURA, Akiko ODAWARA, Satoru KINOUCHI, Tateo TAKASHIMA, Ryoichi TSUNORI, Tomoaki MATSUGI, Yasushi YANAGIMOTO, Tatsuya NAKAMURA
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Publication number: 20160355622Abstract: A novel ethylene/?-olefin/non-conjugated polyene copolymer comprising structural units derived from ethylene (A), an ?-olefin (B) of 3 to 20 carbon atoms, and a non-conjugated polyene (C) containing intramolecularly two or more partial structures in total selected from the group consisting of structures of Formulae (I) and (II), and having a small number of long-chain branches, The novel ethylene/?-olefin/non-conjugated polyene copolymer contains a non-conjugated polyene such as VNB as a copolymerization component and a small long-chain branch content and is excellent in curing properties in the case of crosslinking using peroxide; and a process for producing the ethylene/?-olefin/non-conjugated polyene copolymer, and a use thereof are provided.Type: ApplicationFiled: February 13, 2015Publication date: December 8, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Kotaro ICHINO, Yoshiharu KIKUCHI, Yasushi TOHI, Tomoaki MATSUGI, Yasushi YANAGIMOTO, Mitsunao ARINO, Keisuke SHISHIDO, Mikio HOSOYA