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公开(公告)号：JPH08133992A
公开(公告)日：1996-05-28
申请号：JP27784794
申请日：1994-11-11
Applicant: UBE INDUSTRIES
Inventor： NAKAGAWA KANJI , MATSUO MAKOTO
Abstract: PURPOSE: To provide a method for producing 1-pentene by which the reactional selectivity can be improved and the 1-pentene can efficiently be produced by using a catalyst having a high activity even at low temperatures. CONSTITUTION: This method for producing 1-pentene is to bring a catalyst prepared by supporting an alkali metal on a compression molded granular carrier comprising an anhydrous potassium compound and carbon into contact with propylene at 130-170 deg.C temperature under >=20kg/cm G pressure and then carry out the codimerization, in the method for producing the 1-pentene by codimerizing ethylene with propylene in the presence of the catalyst.
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公开(公告)号：JPH07289908A
公开(公告)日：1995-11-07
申请号：JP9214694
申请日：1994-04-28
Applicant: UBE INDUSTRIES
Inventor： NAKAGAWA KANJI , SHIMAZAKI HIROSHI , MATSUO MAKOTO
IPC: B01J27/12 , B01J27/232 , C07B61/00 , C07C2/22 , C07C11/02
Abstract: PURPOSE:To obtain an alpha-olefin dimerizing catalyst excellent in activity and capable of especially improving the selectivity of an objective product and reduced in the lowering of mechanical strength during use. CONSTITUTION:In a method for producing an alpha-olefin dimerizing catalyst by supporting alkali metal on a compression molded granular carrier, the compression molded granular carrier is obtained by subjecting a mixture (a) consisting of an anhydrous potassium compd., carbon and a thermally decomposable org. binder whose amt. is 4-20wt.% with respect to the total wt. of the carrier to compression molding and subsequently baking the compression molded object (b) to thermally decompose the thermally decomposable org. binder.
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公开(公告)号：JPH06271482A
公开(公告)日：1994-09-27
申请号：JP2693793
申请日：1993-02-16
Applicant: UBE INDUSTRIES
Inventor： NAKAGAWA KANJI , SHIMAZAKI HIROSHI , ATOGUCHI TAKASHI , MATSUO MAKOTO , MIYAUCHI KOJI
IPC: B01J27/24 , C07B61/00 , C07C2/24 , C07C11/02 , C07C11/113
Abstract: PURPOSE:To provide a process for the dimerization or codimerization of a lower alpha-olefin in remarkably improved catalytic activity while keeping the selectivity to the objective product. CONSTITUTION:A lower alpha-olefin dimer is produced by using a catalyst composed of an alkali metal, a potassium carbonate support, carbon and a nitride.
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公开(公告)号：JPH03284336A
公开(公告)日：1991-12-16
申请号：JP8299790
申请日：1990-03-31
Applicant: UBE INDUSTRIES
Inventor： NAKATANI MASAYUKI , MATSUO MAKOTO , NAKAGAWA KANJI
Abstract: PURPOSE:To selectively separate >=1 kind of org. compd. by permeation by bringing a liq. mixture of org. compds. into direct contact with one side of a heat-resistant asymmetric separation membrane made of a soluble aromatic polyimide having a repeating unit shown by a specified formula. CONSTITUTION:The asymmetric separation membrane is formed with a soluble aromatic polyimide having >=40mol% repeating unit shown by formula I (where A is a bivalent residue obtained by removing two amino groups from an aromatic diamine compd.). A liq. mixture of org. compds. is supplied to a module contg. the membrane and brought into direct contact with the supply side of the membrane. The permeation side of the membrane is depressurized, as required, and >=1 kind of org. compd. is selectively permeated through the membrane, vaporized and separated. The unpermeated soln. of org. compds. is drawn off from the supply side and the permeated vapor from the permeation side and recovered.
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公开(公告)号：JPH03284335A
公开(公告)日：1991-12-16
申请号：JP8299690
申请日：1990-03-31
Applicant: UBE INDUSTRIES
Inventor： NAKATANI MASAYUKI , MATSUO MAKOTO , NAKAGAWA KANJI
Abstract: PURPOSE:To permeate >=1 kind of component in a liq. mixture through the asymmetric membrane to separate the component by bringing the liq. mixture of org. compds. into direct contact with one side of the membrane formed with an aromatic polyimide having a repeating unit shown by a specified general formula. CONSTITUTION:The asymmetric separation membrane is formed with an aromatic polyimide having >=40mol% repeating unit shown by formula I between formulae I and II (where A and B are a bivalent aromatic residue obtained by removing an amine group from an aromatic diamine) and the balance repeating unit shown by the formula II. A liq. mixture of org. compds. is supplied to a module contg. the separation membrane and brought into contact with the supply side of the membrane. The permeation side of the membrane is depressurized, as required, and >=1 kind of org. compd. is selectively permeated through the membrane, vaporized and separated. Separation by pervaporization is stably carried out in this way.
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Patent Agency Ranking
公开(公告)号：JPH0299122A
公开(公告)日：1990-04-11
申请号：JP25205388
申请日：1988-10-07
Applicant: UBE INDUSTRIES
Inventor： NAKATANI MASAYUKI , MATSUO MAKOTO , KUSUKI YOSHIHIRO
Abstract: PURPOSE:To efficiently separate an objective org. substance by bringing an org. substance mixed liquid into contact with the single surface of a separation membrane composed of soluble aromatic polyimide obtained from a specific aromatic tetracarboxylic acid component and a specific diamine component. CONSTITUTION:Soluble aromatic polyimide is synthesized from an aromatic tetracarboxylic acid component containing 70mol% or more of biphenyl tetracarboxylic acids and an aromatic diamine component having 2-3 benzene rings containing 15-50mol% of an aromatic diamine compound having one aromatic ring. A heat-resistant asymmetric separation membrane is formed using said soluble aromatic polyimide and an org. compound mixed liquid is directly brought into contact with the single surface of said separation membrane. At least one kind of the org. compound in the org. compound mixed liquid permeates and transmits through the separation membrane and is subsequently separated as vapor.
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公开(公告)号：JP2002249462A
公开(公告)日：2002-09-06
申请号：JP2001044934
申请日：2001-02-21
Applicant: UBE INDUSTRIES
Inventor： SHIOTANI AKINORI , MATSUO MAKOTO
IPC: C07C67/08 , C07B57/00 , C07B61/00 , C07C67/303 , C07C67/52 , C07C67/60 , C07C69/753
Abstract: PROBLEM TO BE SOLVED: To provide a method for separating (1R, 1'S, 3R, 3'S, 4S, 4'R)- dicyclohexyl-3,3',4,4'-tetracarboxylic acid dimethylester at a stage of cis- dicyclohexyl-3,3',4,4'-tetracarboxylic acid dimehylester (semiester). SOLUTION: The method for separating cis-dicyclohexyl-3,3',4,4'- tetracarboxylic acid dimethylester, comprising recrystallizing a product obtained by hydrogen-reducing tetramethyl biphenyl-3,3',4,4'-tetracarboxylate to preferentially separate an isomer having a cis structure, hydrolyzing three kinds of isomer mixtures obtained, thereby converting these into the corresponding tetracarboxylic acids, then rendering the tetracarboxylic acids anhydrous to produce tetracarboxylic acid dianhydrides having a cis structure, reacting this isomer mixture with methanol to convert it into tetracarboxylic acid dimethylester and thereby preferentially separating only (1R, 1'S, 3R, 3'S, 4S, 4'R)-dicyclohexyl-3, 3',4, 4'-tetracarboxylic acid dimethylester at this semiester stage.
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38.发明专利
公开(公告)号：JP2002030033A
公开(公告)日：2002-01-29
申请号：JP2000209478
申请日：2000-07-11
Applicant: UBE INDUSTRIES
Inventor： SHIOTANI AKINORI , MATSUO MAKOTO
Abstract: PROBLEM TO BE SOLVED: To provide a cis-dicyclohexy1-3,3'4,4-tetracarboxylic acid and a cis- dicyclohyxyl-3,3'4,4'-tetracarbosylic acid dianhydride being new starting raw materials for a polyimide resin. SOLUTION: (1R,1'S,3R,3'S,4S,4'R)-Dicyclohexyl-3,3'4,4'-tetracarbosylic acid and (1R, 1'S,3R,3'S,4S,4'R)-dicyclohexyl-3,3'4,4'-tetracarboxylic acid dianhydride are provided.
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公开(公告)号：JPH08109144A
公开(公告)日：1996-04-30
申请号：JP24414294
申请日：1994-10-07
Applicant: UBE INDUSTRIES
Inventor： NAKAGAWA KANJI , MATSUO MAKOTO
Abstract: PURPOSE: To provide a method for producing 1-pentene, capable of providing high reaction selectivity even in supply of ethylene/propylene close to an efficient stoichiometric ratio, by using a catalyst capable of improving 1-pentene selectivity in co-dimerizing ethylene with propylene. CONSTITUTION: In a method for producing 1-pentene by co-dimerizing ethylene with propylene together in the presence of a catalyst obtained by supporting an alkali metal on a compression mold type granular carrier composed of an anhydrous potassium compound and carbon, (a) the anhydrous potassium compound comprises potassium fluoride and potassium carbonate and (b) the molar ratio of ethylene and propylene is 0.4-1.6. Ethylene and propylene are brought into contact with the catalyst to give the method for producing 1-pentene.
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公开(公告)号：JPH0299125A
公开(公告)日：1990-04-11
申请号：JP25205688
申请日：1988-10-07
Applicant: UBE INDUSTRIES
Inventor： NAKATANI MASAYUKI , MATSUO MAKOTO , KUSUKI YOSHIHIRO
Abstract: PURPOSE:To efficiently and selectively separate an org. compound for a long period of time by directly bringing an org. compound mixed liquid into contact with the single surface of an asymmetric separation membrane composed of specific soluble aromatic polyimide to allow the org. compound to permeate and transmit through said membrane. CONSTITUTION:In a pervaporization method using an asymmetric separation membrane, the asymmetric separation membrane composed of soluble aromatic polyimide prepared from a specific aromatic tetracarboxylic acid component and an aromatic diamine component being a specific diamine compound is obtained. An org. compound mixed liquid is directly brought into contact with the single surface of said asymmetric separation membrane. Whereupon, at least one kind of the org. compound in the org. compound mixed liquid selectively permeates and transmits through the asymmetric separation membrane to be separated as vapor. By this method, the org. compound is separated efficiently and selectively by the pervaporization method and pervaporization can be industrially carried out for a long period of time.
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