Patents by Inventor Terunori Fujita
Terunori Fujita 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: 11691136Abstract: A method for producing an olefin oligomer is disclosed, in which an olefin oligomerization reaction is performed in the presence of an olefin oligomerization catalyst comprising (A) a chromium compound, (B) an amine compound of the general formula (1): (R1 to R4 represent a group such as a hydrocarbon group, Y represents a structure represented by —CR5R6—, R5 and R6 represent a group such as a hydrogen atom, and Z represents an integer of 1 to 10), and (C) a compound such as an organometal compound; and the olefin oligomerization catalyst.Type: GrantFiled: July 6, 2018Date of Patent: July 4, 2023Assignee: MITSUI CHEMICALS, INC.Inventors: Seiichi Ishii, Shinichiro Ichikawa, Terunori Fujita
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Publication number: 20200222886Abstract: A method for producing an olefin oligomer is disclosed, in which an olefin oligomerization reaction is performed in the presence of an olefin oligomerization catalyst comprising (A) a chromium compound, (B) an amine compound of the general formula (1): (R1 to R4 represent a group such as a hydrocarbon group, Y represents a structure represented by —CR5R6—, R5 and R6 represent a group such as a hydrogen atom, and Z represents an integer of 1 to 10), and (C) a compound such as an organometal compound; and the olefin oligomerization catalyst.Type: ApplicationFiled: July 6, 2018Publication date: July 16, 2020Applicant: MITSUI CHEMICALS, INC.Inventors: Seiichi ISHII, Shinichiro ICHIKAWA, Terunori FUJITA
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Patent number: 8680355Abstract: A novel olefin production process of the invention can be established as an industrial and practical process of producing an olefin with high selectivity by directly reacting a ketone and hydrogen in a single reaction step. In particular, a novel olefin production process is provided in which propylene is obtained with high selectivity by directly reacting acetone and hydrogen. An olefin production process of the invention includes reacting a ketone and hydrogen at a reaction temperature in the range of 50 to 300° C. in the presence of a Cu-containing hydrogenation catalyst and a solid acid substance.Type: GrantFiled: October 22, 2009Date of Patent: March 25, 2014Assignee: Mitsui Chemcials, Inc.Inventors: Tsuneyuki Ohkubo, Kenji Fujiwara, Terunori Fujita
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Patent number: 8581016Abstract: The present invention provides an industrially practical process where a ketone and an aromatic compound are directly reacted to obtain a corresponding alkylated aromatic compound in a single reaction step. The process for producing an alkylated aromatic compound is characterized in that it comprises reacting an aromatic compound, a ketone and hydrogen in the presence of a solid acid substance and a catalyst composition comprising at least one metal selected from the group consisting of Co, Re, Ni and a platinum group metal.Type: GrantFiled: November 1, 2007Date of Patent: November 12, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Toshihiro Takai, Michiaki Umeno, Shinobu Aoki, Terunori Fujita, Tsuneyuki Ohkubo
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Patent number: 8552239Abstract: A novel olefin production process is provided which can be established as an industrial and practical process capable of producing olefins by directly reacting a ketone and hydrogen in a single reaction step. In particular, a novel olefin production process is provided in which propylene is obtained with high selectivity by directly reacting acetone and hydrogen. The olefin production process according to the present invention includes reacting a ketone and hydrogen in the presence of at least one dehydration catalyst and a silver-containing catalyst, and the at least one dehydration catalyst is selected from metal oxide catalysts containing a Group 6 element, zeolites, aluminas and heteropoly acid salts in which part or all the protons in heteropoly acids are exchanged with metal cations.Type: GrantFiled: March 12, 2010Date of Patent: October 8, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Tsuneyuki Ohkubo, Kenji Fujiwara, Terunori Fujita, Masayasu Ishibashi
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Patent number: 8546633Abstract: A method for producing an alkylated aromatic compound includes a step (i) of producing a reaction product (a1) containing the alkylated aromatic compound and water by the reaction of an aromatic compound, a ketone, and hydrogen using a metal component containing at least one metallic element of copper, nickel, cobalt, and rhenium and a solid acid substance; a step (ii) of forming a dehydrated product (a2) from at least a portion of the reaction product (a1) by removing at least a portion of the water in the reaction product (a1); and a step (iii) of producing a reaction product (a3) containing the alkylated aromatic compound by bringing at least a portion of the dehydrated product (a2) into contact with a solid acid substance.Type: GrantFiled: October 22, 2009Date of Patent: October 1, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Kenji Fujiwara, Tsuneyuki Ohkubo, Terunori Fujita, Shinobu Aoki, Masayasu Ishibashi, Masao Imai, Kozo Yasuda
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Patent number: 8536394Abstract: According to a process of the invention, a ketone, an aromatic compound and hydrogen as starting materials are reacted together in a single reaction step to produce an alkylaromatic compound in high yield. A process for producing phenols in the invention includes a step of performing the above alkylation process and does not increase the number of steps compared to the conventional cumene process. The process for producing alkylated aromatic compounds includes reacting an aromatic compound such as benzene, a ketone such as acetone and hydrogen in the presence of a solid acid substance, preferably a zeolite, and a silver-containing catalyst.Type: GrantFiled: March 12, 2010Date of Patent: September 17, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Tsuneyuki Ohkubo, Shinobu Aoki, Masayasu Ishibashi, Masao Imai, Terunori Fujita, Kenji Fujiwara
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Patent number: 8349451Abstract: To provide capsular fine particles comprising an olefinic polymer which have a uniform particle size distribution and a uniform particle size, and which are spherical and free from the coagulation between particles. Capsular fine particles comprising the olefinic polymer, of which the ratio (L/M) of the outer diameter (L) to the inner diameter (M) is 1.1 to 6.0, and the average diameter is 0.6 to 40 ?m.Type: GrantFiled: April 7, 2006Date of Patent: January 8, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Yasushi Nakayama, Naoto Matsukawa, Junji Saito, Susumu Murata, Makoto Mitani, Terunori Fujita
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Patent number: 8338557Abstract: Olefin polymer with narrow molecular weight distribution and specific molecular weight, olefin polymer having functional group introduced at terminal, tapered polymer containing segment wherein monomer composition continuously changes in the polymer chain, olefin polymer having different segments bonded to each other, and process for preparing these polymers. The olefin polymers are polymers of C2-20 carbon atom olefins and have a number-average molecular weight of ?500 and Mw/Mn of ?1.5. In syntheses, an olefin of 2-20 carbon atoms is polymerized in the presence of a catalyst comprising a transition metal compound represented by the formula LmMXn wherein M is a transition metal atom of Group 3-11, m is 1-5, n is a number satisfying a valence of M, L is a ligand—coordinated to the central metal M—which contains a heteroatom having no direct bond to the central metal, and X is e.g. halogen or a hydrocarbon.Type: GrantFiled: December 1, 2008Date of Patent: December 25, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Makoto Mitani, Yasunori Yoshida, Junichi Mohri, Kazutaka Tsuru, Seiichi Ishii, Shinichi Kojoh, Tomoaki Matsugi, Junji Saito, Naoto Matsukawa, Shigekazu Matsui, Takashi Nakano, Hidetsugu Tanaka, Norio Kashiwa, Terunori Fujita
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Patent number: 8129475Abstract: A process of preparing a telechelic polyolefin is disclosed by performing steps 1a, 2, and 1b in this order in the presence of an olefin polymerizing catalyst and subsequently performing step 3 if necessary. Step 1a involves reacting the olefin polymerizing catalyst with a polar-group-containing olefin (C). Step 2 involves reacting the resultant compound of step 1a with at least one olefin (D) selected from ethylene and olefins having 3 to 20 carbon atoms n times wherein n is an integer of 1 or more, provided that when n is an integer of 2 or more, the olefins (D) used in the respective contact operations are different in kind or composition. Step 1b involves reacting the resultant compound of step 2 with the same or different polar-group-containing olefin (C). Step 3 involves chemically converting the Y? group in the general formula (II) to a different group.Type: GrantFiled: April 13, 2011Date of Patent: March 6, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Haruyuki Makio, Terunori Fujita
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Publication number: 20120010453Abstract: A novel olefin production process is provided which can be established as an industrial and practical process capable of producing olefins by directly reacting a ketone and hydrogen in a single reaction step. In particular, a novel olefin production process is provided in which propylene is obtained with high selectivity by directly reacting acetone and hydrogen. The olefin production process according to the present invention includes reacting a ketone and hydrogen in the presence of at least one dehydration catalyst and a silver-containing catalyst, and the at least one dehydration catalyst is selected from metal oxide catalysts containing a Group 6 element, zeolites, aluminas and heteropoly acid salts in which part or all the protons in heteropoly acids are exchanged with metal cations.Type: ApplicationFiled: March 12, 2010Publication date: January 12, 2012Applicant: Mitsui Chemicals, Inc.Inventors: Tsuneyuki Ohkubo, Kenji Fujiwara, Terunori Fujita, Masayasu Ishibashi
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Publication number: 20120004471Abstract: According to a process of the invention, a ketone, an aromatic compound and hydrogen as starting materials are reacted together in a single reaction step to produce an alkylaromatic compound in high yield. A process for producing phenols in the invention includes a step of performing the above alkylation process and does not increase the number of steps compared to the conventional cumene process. The process for producing alkylated aromatic compounds includes reacting an aromatic compound such as benzene, a ketone such as acetone and hydrogen in the presence of a solid acid substance, preferably a zeolite, and a silver-containing catalyst.Type: ApplicationFiled: March 12, 2010Publication date: January 5, 2012Inventors: Tsuneyuki Ohkubo, Shinobu Aoki, Masayasu Ishibashi, Masao Imai, Terunori Fujita, Kenji Fujiwara
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Publication number: 20110230696Abstract: A novel olefin production process of the invention can be established as an industrial and practical process of producing an olefin with high selectivity by directly reacting a ketone and hydrogen in a single reaction step. In particular, a novel olefin production process is provided in which propylene is obtained with high selectivity by directly reacting acetone and hydrogen. An olefin production process of the invention includes reacting a ketone and hydrogen at a reaction temperature in the range of 50 to 300° C. in the presence of a Cu-containing hydrogenation catalyst and a solid acid substance.Type: ApplicationFiled: October 22, 2009Publication date: September 22, 2011Applicant: MITSUI CHEMICALS, INC.Inventors: Tsuneyuki Ohkubo, Kenji Fujiwara, Terunori Fujita
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Patent number: 8017693Abstract: A telechelic polyolefin represented by the following general formula (I): X—P—Y??(1) wherein X and Y are each a group containing at least one element selected from oxygen, sulfur, nitrogen, phosphorus and halogens, X and Y may be the same or different, P represents a chain made mainly of an olefin composed only of carbon and hydrogen atoms, and X and Y are bonded to both terminals of P, wherein the molecular weight distribution (Mw/Mn) obtained by gel permeation chromatography (GPC) is from 1.0 to 1.5, is useful for various purposes.Type: GrantFiled: August 27, 2004Date of Patent: September 13, 2011Assignee: Mitsui Chemicals, Inc.Inventors: Haruyuki Makio, Terunori Fujita
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Publication number: 20110201846Abstract: It is an object of the present invention to provide a method for producing an alkylated aromatic compound and a method for producing cumene that can greatly reduce the amount of solid acid substance, and a method for producing phenol including a step of producing cumene by the method for producing cumene.Type: ApplicationFiled: October 22, 2009Publication date: August 18, 2011Applicant: MITSUI CHEMICALS, INC.Inventors: Kenji Fujiwara, Tsuneyuki Ohkubo, Terunori Fujita, Shinobu Aoki, Masayasu Ishibashi, Masao Imai, Kozo Yasuda
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Publication number: 20110196118Abstract: A process of preparing a telechelic polyolefin is disclosed by performing steps 1a, 2, and 1b in this order in the presence of an olefin polymerizing catalyst and subsequently performing step 3 if necessary. Step 1a involves reacting the olefin polymerizing catalyst with a polar-group-containing olefin (C). Step 2 involves reacting the resultant compound of step 1a with at least one olefin (D) selected from ethylene and olefins having 3 to 20 carbon atoms n times wherein n is an integer of 1 or more, provided that when n is an integer of 2 or more, the olefins (D) used in the respective contact operations are different in kind or composition. Step 1b involves reacting the resultant compound of step 2 with the same or different polar-group-containing olefin (C). Step 3 involves chemically converting the Y? group in the general formula (II) to a different group.Type: ApplicationFiled: April 13, 2011Publication date: August 11, 2011Inventors: Haruyuki Makio, Terunori Fujita
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Patent number: 7897709Abstract: A single-chain-end functionalized polyolefin and method of producing the same. The polyolefin is represented by the following general formula (I): P—X??(I) wherein X is a group containing at least one element selected from oxygen, sulfur, nitrogen, phosphorus and halogens, P represents a polymer chain made mainly of an olefin composed only of carbon and hydrogen atoms, and X is bonded to a terminal of P, wherein the molecular weight distribution (Mw/Mn) obtained by gel permeation chromatography (GPC) is from 1.0 to 1.5.Type: GrantFiled: May 19, 2009Date of Patent: March 1, 2011Assignee: Mitsui Chemicals, Inc.Inventors: Haruyuki Makio, Terunori Fujita
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Publication number: 20100267908Abstract: [Task] To provide a catalyst for olefin polymerization having an excellent olefin polymerization performance and capable of producing a polyolefin with excellent properties.Type: ApplicationFiled: March 18, 2010Publication date: October 21, 2010Inventors: Kenji Michiue, Mitsuhiko Onda, Shigekazu Matsui, Sadahiko Matsuura, Koji Endo, Makoto Mitani, Terunori Fujita
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Patent number: 7790936Abstract: The present invention provides a process in which a ketone is directly reacted with an aromatic compound in a single reaction step to obtain the corresponding alkylated aromatic compound in a higher yield. By reacting an aromatic compound with a ketone and hydrogen in the presence of a solid acid substance and a catalyst composition containing Cu and Zn in a ratio of Zn to Cu ranging from 0.70 to 1.60 (atomic ratio), the corresponding alkylated aromatic compound is prepared.Type: GrantFiled: February 12, 2008Date of Patent: September 7, 2010Assignee: Mitsui Chemicals, Inc.Inventors: Toshihiro Takai, Michiaki Umeno, Shinobu Aoki, Terunori Fujita, Tsuneyuki Ohkubo
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Patent number: 7687579Abstract: An ethylene (co)polymer of the present invention is a (co)polymer with excellent moldability and mechanical properties and either an ethylene homopolymer or a copolymer of ethylene and an ?-olefin of 4 to 20 carbon atoms. The (co)polymer has methyl branches measured by 13C-NMR less than 0.1 in number per 1,000 carbon atoms and Mw/Mn measured by GPC not lower than 1.8 and lower than 4.5. The (co)polymer is either an ethylene homopolymer or a copolymer of ethylene and an ?-olefin of 3 to 20 carbon atoms. The melt tension (MT) and the swell ratio (SR) satisfy the relation; log(MT)>12.9?7.15×SR; and the intrinsic viscosity ([?]) and the melt flow rate (MFR) satisfy the relation; [?]>1.85×MFR?0.192 in the case of MFR<1 and the relation; [?]>1.85×MFR?0.213 in the case of MFR?1. Such an ethylene (co)polymer can be usable for various molding applications and especially suitable for pipes.Type: GrantFiled: August 26, 2005Date of Patent: March 30, 2010Assignee: Mitsui Chemicals, Inc.Inventors: Mamoru Takahashi, Tetsuji Kasai, Junji Saito, Naoto Matsukawa, Kazutaka Tsuru, Makoto Mitani, Terunori Fujita, Shiro Otsuzuki, Tetsuhiro Matsumoto, Toshiyuki Tsutsui