Patents by Inventor Yuki Aso
Yuki Aso 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: 10428162Abstract: The present invention provides a hydrogenation catalyst, which can produce an olefin polymer having a higher molecular weight, and a process for producing an olefin polymer having a higher molecular weight, by controlling hydrogen concentration in a polymerization reaction system efficiently in polymerizing an olefin in the presence of hydrogen. There is provided a hydrogenation catalyst formed by contacting the undermentioned component (A), the undermentioned component (B), and the undermentioned component (C). There is further provided a process for producing an olefin polymer characterized by polymerizing an olefin in the presence of hydrogen, the undermentioned component (A), the undermentioned component (B), and the undermentioned component (D). Component (A): a titanocene compound; Component (B): a silicon compound represented by the undermentioned general formula [1]: Si(OR1)4 [1]; Component (C): an alkyl metal compound; Component (D): a catalyst for olefin polymerization.Type: GrantFiled: December 30, 2015Date of Patent: October 1, 2019Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yuki Aso, Noriyuki Satou, Shin-ichi Kumamoto
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Publication number: 20160115254Abstract: The present invention provides a hydrogenation catalyst, which can produce an olefin polymer having a higher molecular weight, and a process for producing an olefin polymer having a higher molecular weight, by controlling hydrogen concentration in a polymerization reaction system efficiently in polymerizing an olefin in the presence of hydrogen. There is provided a hydrogenation catalyst formed by contacting the undermentioned component (A), the undermentioned component (B), and the undermentioned component (C). There is further provided a process for producing an olefin polymer characterized by polymerizing an olefin in the presence of hydrogen, the undermentioned component (A), the undermentioned component (B), and the undermentioned component (D). Component (A): a titanocene compound; Component (B): a silicon compound represented by the undermentioned general formula [1]: Si(OR1)4 [1]; Component (C): an alkyl metal compound; Component (D): a catalyst for olefin polymerization.Type: ApplicationFiled: December 30, 2015Publication date: April 28, 2016Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Yuki ASO, Noriyuki SATOU, Shin-ichi KUMAMOTO
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Patent number: 7960486Abstract: The purpose of the present invention is provite a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight even in the presence of hydrogen and can obtain an olefin polymer having good powder characteristics by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; adding a hydrogenation catalyst into the gas phase reaction vessel; and adding a polymerization activity depressant.Type: GrantFiled: August 3, 2009Date of Patent: June 14, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Yuki Aso, Noriyuki Satou, Shin-ichi Kumamoto
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Patent number: 7897705Abstract: The purpose of the present invention is to provide a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; and adding a hydrogenation catalyst to a bed portion in the gas phase reaction vessel.Type: GrantFiled: August 3, 2009Date of Patent: March 1, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Yuki Aso, Noriyuki Satou, Shin-ichi Kumamoto
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Publication number: 20100036070Abstract: The purpose of the present invention is to provide a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; and adding a hydrogenation catalyst to a bed portion in the gas phase reaction vessel.Type: ApplicationFiled: August 3, 2009Publication date: February 11, 2010Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Aso, Noriyuki Satou, Shin-ichi Kumamoto
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Publication number: 20100036068Abstract: The purpose of the present invention is to provide a hydrogenation catalyst, which can produce an olefin polymer having a higher molecular weight, and a process for producing an olefin polymer so that an olefin polymer having a higher molecular weight can be produced, by controlling hydrogen concentration in a polymerization reaction system efficiently in polymerizing an olefin in the presence of hydrogen. There is provided a hydrogenation catalyst formed by contacting the undermentioned component (A), the undermentioned component (B), and the undermentioned component (C). There is further provided a process for producing an olefin polymer characterized by polymerizing an olefin in the presence of hydrogen, the undermentioned component (A), the undermentioned component (B), and the undermentioned component (D).Type: ApplicationFiled: August 3, 2009Publication date: February 11, 2010Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Aso, Noriyuki Satou, Shin-ichi Kumamoto
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Publication number: 20100036076Abstract: The purpose of the present invention is provite a process for producing an olefin polymer, which can produce an olefin polymer having a higher molecular weight even in the presence of hydrogen and can obtain an olefin polymer having good powder characteristics by lowering hydrogen concentration efficiently in polymerizing an olefin in the presence of hydrogen by use of a gas phase reaction vessel. There is provided a process for producing an olefin polymer comprising the steps of: using a gas phase reaction vessel; polymerizing an olefin by use of a catalyst for olefin polymerization in the presence of hydrogen; adding a hydrogenation catalyst into the gas phase reaction vessel; and adding a polymerization activity depressant.Type: ApplicationFiled: August 3, 2009Publication date: February 11, 2010Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Aso, Noriyuki Satou, Shin-ichi Kumamoto