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1.发明公开公开(公告)号：US20230212110A1
公开(公告)日：2023-07-06
申请号：US18000646
申请日：2021-06-03
Inventor： Katsuhiko TAKEUCHI , Kazuhiro MATSUMOTO , Norihisa FUKAYA , Hiroki KOIZUMI , Jun-Chul CHOI , Masahito UCHIDA , Seiji MATSUMOTO , Satoshi HAMURA
IPC: C07C269/04 , C07C273/18 , C07D233/34 , B01J31/12 , B01J31/22
CPC classification number: C07C269/04 , C07C273/1836 , C07D233/34 , B01J31/122 , B01J31/2208 , B01J31/2295 , B01J31/226 , B01J2531/42 , B01J2531/26 , B01J2531/847 , B01J2531/46 , B01J2231/4283
Abstract: A method for producing a carbamic acid salt, including contacting a carbon dioxide-containing mixed gas having a partial pressure of carbon dioxide of 0.001 atm or more and less than 1 atm with an amino group-containing organic compound in the presence of a base in at least one organic solvent selected from the group consisting of an organic solvent having 2 or more and 8 or less carbon atoms, and a method for producing a carbamic acid ester or a urea derivative using the carbamic acid salt.
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公开(公告)号：US20250145739A1
公开(公告)日：2025-05-08
申请号：US18835626
申请日：2023-02-06
Applicant: BRIDGESTONE CORPORATION , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Masahiro HOJO , Akira OKUNO , Marino KUNO , Norihisa FUKAYA , Satpriyo Putro WAHYU , Jun-Chul CHOI , Faried MIFTAH , Hiroshi YAMASHITA , Tadahiro FUJITANI , Makiko HATORI , Makoto SUGIKI
Abstract: Provided is a method of decomposing a crosslinked rubber that includes: a first decomposition step of decomposing a crosslinked rubber containing a diene rubber, using a catalyst represented by the following general formula (1), (2), or (3), where M is ruthenium, molybdenum, or the like, X1, X2, L1, L2, and L3 each independently represent a ligand, R1, R2, and R3 each independently represent hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, or the like (these groups may be substituted by one or more alkyl groups, halogens, alkoxy groups, or the like), L1 and L2, R1 and R2, and L1 and R1 may respectively bond with each other to form rings; and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step at a temperature of 300° C. to 950° C. in the presence of a catalyst.
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公开(公告)号：US20250136530A1
公开(公告)日：2025-05-01
申请号：US18835542
申请日：2023-02-06
Applicant: BRIDGESTONE CORPORATION , TOHOKU UNIVERSITY , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Masahiro HOJO , Akira OKUNO , Marino KUNO , Toshiaki YOSHIOKA , Shogo KUMAGAI , Norihisa FUKAYA , Satpriyo Putro WAHYU , Jun-Chul CHOI , Faried MIFTAH , Hiroshi YAMASHITA , Tadahiro FUJITANI , Makiko HATORI , Makoto SUGIKI
Abstract: Provided is a method of decomposing a crosslinked rubber that includes: a first decomposition step of decomposing a crosslinked rubber containing a diene rubber, using a catalyst represented by the following general formula (1), (2), or (3), where M is ruthenium, molybdenum, etc., X1, X2, L1, L2, and L3 each independently represent a ligand, R1, R2, and R3 each independently represent hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, etc. (these groups may be substituted by one or more alkyl groups, halogens, alkoxy groups, etc.), L1 and L2, R1 and R2, and L1 and R1 may respectively bond with each other to form rings; and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step under an inert gas atmosphere and in the absence of a catalyst at a temperature of 600° C. to 950° C.
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Patent Agency Ranking
公开(公告)号：US20250115732A1
公开(公告)日：2025-04-10
申请号：US18836644
申请日：2023-02-06
Applicant: BRIDGESTONE CORPORATION , TOHOKU UNIVERSITY , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Masahiro HOJO , Akira OKUNO , Marino KUNO , Masahiro HOMMA , Toshiaki YOSHIOKA , Shogo KUMAGAI , Norihisa FUKAYA , Satpriyo Putro WAHYU , Jun-Chul CHOI , Faried MIFTAH , Hiroshi YAMASHITA , Tadahiro FUJITANI
Abstract: The present disclosure addresses the problem of providing a method for decomposing a crosslinked rubber that can improve monomer yield. The solution is a method of decomposing a crosslinked rubber that includes: a first decomposition step of pyrolyzing a crosslinked rubber containing a diene rubber at a temperature of 150° C. or more and 400° C. or less, and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step under an inert gas atmosphere and in the presence of a catalyst at a temperature of 300° C. or more and 950° C. or less. Preferably 80 mass % or more of the diene rubber in the crosslinked rubber is decomposed to diene oligomers having a weight-average molecular weight of 100 to 50,000 via the first decomposition step.
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公开(公告)号：US20200347082A1
公开(公告)日：2020-11-05
申请号：US16955271
申请日：2018-12-25
Inventor： Norihisa FUKAYA , Seong-Jib CHOI , Jun-Chul CHOI , Toshio HORIKOSHI , Sho KATAOKA , Thuy NGUYEN , Kazuhiko SATO , Minoru HASEGAWA , Hiroshi KUMAI
Abstract: An object of the present invention is to provide a method capable of producing a tetraalkoxysilane with a high energy efficiency and with a high yield. The present invention provides a method for producing a tetraalkoxysilane, the method including: a first step of reacting an alcohol with a silicon oxide; and a second step of bringing a vaporized component of the reaction mixture obtained in the first step into contact with a molecular sieve.
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公开(公告)号：US20250136529A1
公开(公告)日：2025-05-01
申请号：US18836470
申请日：2023-02-06
Applicant: BRIDGESTONE CORPORATION , TOHOKU UNIVERSITY , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Masahiro HOJO , Akira OKUNO , Marino KUNO , Toshiaki YOSHIOKA , Shogo KUMAGAI , Norihisa FUKAYA , Satpriyo Putro WAHYU , Jun-Chul CHOI , Faried MIFTAH , Hiroshi YAMASHITA , Tadahiro FUJITANI , Makiko HATORI , Makoto SUGIKI
Abstract: Provided is a method of decomposing a crosslinked rubber that includes: a first decomposition step of decomposing a crosslinked rubber containing a diene rubber, using a catalyst represented by the following general formula (1), (2), or (3), where Mis ruthenium, molybdenum, etc., X1, X2, L1, L2, and L3 each independently represent a ligand, R1, R2, and R3 each independently represent hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, etc. (these groups may be substituted by one or more alkyl groups, halogens, alkoxy groups, etc.), L1 and L2, R1 and R2, and L1 and R1 may respectively bond with each other to form rings; and a second decomposition step of pyrolyzing a decomposition product obtained by the first decomposition step under an inert gas atmosphere and in the absence of a catalyst at a temperature of 300° C. to 450° C.
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公开(公告)号：US20190185420A1
公开(公告)日：2019-06-20
申请号：US16328530
申请日：2017-08-31
Inventor： Jun-Chul CHOI , Norihisa FUKAYA , Qiao ZHANG , Hiroyuki YASUDA
IPC: C07C269/04
Abstract: A method of production of carbamic acid ester has a high yield and high selectivity and is superior in economy. The method of production of a carbamic acid ester includes reacting an amine, carbon dioxide, and an alkoxysilane compound in the presence of a catalyst containing a zinc compound or an alkali metal compound or in the presence of an ionic liquid. A carbamic acid ester is produced, for example by reacting aniline, carbon dioxide, and tetramethoxysilane at a temperature of 150 to 180° C. in the presence of zinc acetate and 2,2′-bipyridine.
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公开(公告)号：US20190100649A1
公开(公告)日：2019-04-04
申请号：US16086779
申请日：2017-02-28
Applicant: SHIN-ETSU CHEMICAL CO., LTD. , NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Inventor： Masayuki IKENO , Takeshi MIYAO , Takeharu TOYOSHIMA , Jun-chul CHOI , Norihisa FUKAYA , Hiroyuki YASUDA
Abstract: A resin composition includes: (a) a supported platinum catalyst having a structure shown by the following general formula (1) in which a platinum complex is supported on a surface of an inorganic oxide; and (b) a thermoplastic matrix resin. The resin composition is usable as an addition-reaction catalyst capable of imparting sufficient storability and quick curability to an addition-reaction curable composition. In the formula, L represents a ligand selected from carbon monoxide, an olefin compound, an amine compound, a phosphine compound, an N-heterocyclic carbene compound, a nitrile compound, and an isocyanide compound; and n represents the number of Ls and an integer from 0 to 2.
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