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公开(公告)号：JP2001240574A
公开(公告)日：2001-09-04
申请号：JP2000053175
申请日：2000-02-29
Applicant: UBE INDUSTRIES
Inventor： YAMAMOTO YOSHIFUMI , SUGIMOTO TSUNEMI
Abstract: PROBLEM TO BE SOLVED: To provide a method of preparing a cycloalkanone from a cycloalkanone in good yield, separable of a catalyst and with ease industrially. SOLUTION: The preparation method of a cycloalkanone is characterized by catalytically reacting a cycloalkyl nitrite derived from a cycloalkanol in the presence of a solid acid catalyst.
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公开(公告)号：JPH06239807A
公开(公告)日：1994-08-30
申请号：JP10934893
申请日：1993-05-11
Applicant: UBE INDUSTRIES
Inventor： SANADA NOBUAKI , MURAKAMI MASATO , ABE KOJI , YAMAMOTO YOSHIFUMI , KURATO TOSHIO
Abstract: PURPOSE:To stably produce a carbonate ester in high reaction rate and selectivity for a long period by catalytically reacting carbon monoxide with a nitrite ester under mild reaction conditions. CONSTITUTION:This method for producing a carbonate ester is characterized by reacting carbon monoxide with a nitrite ester in the presence of a solid catalyst comprising a platinum metal or its compound and a Lanthanide metal or its compound carried on a carrier.
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公开(公告)号：JPH10114717A
公开(公告)日：1998-05-06
申请号：JP26693996
申请日：1996-10-08
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , SUGISE RIYOUJI , INBE YOUICHI , SUMITA TOSHIHIKO , YAMAMOTO YOSHIFUMI
Abstract: PROBLEM TO BE SOLVED: To obtain a diaryl carbonate in a high yield by heating a diaryl oxalate in the presence of a rare earth metal compound to effect decarbonylation of the diaryl oxalate. SOLUTION: This diaryl carbonate is produced by decarbonylation of a diaryl oxalate in the presence of a rare earth metal compound as a catalyst in a reaction vessel according to the reaction formula (Ar is an aryl). It is preferable that the reaction is carried out under heating in liquid phase, normally, at 100-450 deg.C, pref. 160-400 deg.C, esp. 180-350 deg.C under normal pressures. The catalyst may be single or in the form of mixture, its amount to be used being normally 0.001-50(pref. 0.01-20)mol.%, in terms of the rare earth metal, based on the diaryl oxalate. After the reaction, the diaryl carbonate thus produced is separated and purified by e.g. distillation.
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公开(公告)号：JPH10101622A
公开(公告)日：1998-04-21
申请号：JP26063296
申请日：1996-10-01
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , SUGISE RIYOUJI , INBE YOUICHI , SUMITA TOSHIHIKO , YAMAMOTO YOSHIFUMI
Abstract: PROBLEM TO BE SOLVED: To obtain a diaryl carbonate useful as a raw material for producing polycarbonate in good yield by heating a diaryl oxalate in the presence of a specific catalyst in decarbonylation reaction of the diaryl oxalate. SOLUTION: The decarbonylation reaction of a diaryl oxalate is carried out normally at 100-450 deg.C, especially 180-350 deg.C by using a carboxylic acid salt of an alkali metal as a catalyst. An aliphatic carboxylic acid salt of the alkali metal is preferably used as the carboxylic acid salt of the alkali metal. Lithium formate, sodium formate, lithium acetate, potassium acetate, rubidium oxalate, etc., is exemplified as the catalyst. The carboxylic acid salt of the alkali metal may be supported on a support such as silica or zeolite. The supported amount is about 0.1-50wt.% as the alkali metal, based on the support. The catalyst is normally used in an amount of about 0.001-50mol% as the alkali metal, based on diaryl oxide.
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公开(公告)号：JPH10101618A
公开(公告)日：1998-04-21
申请号：JP25695896
申请日：1996-09-27
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , SUGISE RIYOUJI , INBE YOUICHI , SUMITA TOSHIHIKO , YAMAMOTO YOSHIFUMI
Abstract: PROBLEM TO BE SOLVED: To obtain a diaryl carbonate useful as a raw material for producing polycarbonate in good yield by heating a diaryl oxalate in the presence of a specific catalyst in decarbonylation reaction of the diaryl oxalate. SOLUTION: The decarbonylation reaction of a diaryl carbonate is carried out at 100-450 deg.C, especially about 180-350 deg.C in the presence of a compound of II B group metal. A carboxylic acid salt, a halide, etc., of II B group metal can be used as the compound of II B group metal (e.g. zinc or cadmium). A carboxylic acid salt of zinc is especially preferably used as the compound of II B group metal. Although the compound of II B group metal can directly be used, the compound may be supported on a support such as alumina, silica or zeolite. The supported amount of the compound of II B group metal is normally about 0.1-50wt.%, preferably 0.5-30wt.% as the metal of II B group metal, based on the support. The catalyst may alone be used or used as a mixture of two or more kinds of substances. An amount of the catalyst used is normally about 0.001-50mol% as II B group metal, based on diaryl oxalate.
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Patent Agency Ranking
公开(公告)号：JPH08325206A
公开(公告)日：1996-12-10
申请号：JP7025396
申请日：1996-03-26
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , SUGISE RIYOUJI , INBE YOUICHI , SUMITA TOSHIHIKO , YAMAMOTO YOSHIFUMI , SUGIMOTO TSUNEMI , KURATO TOSHIO
Abstract: PURPOSE: To readily obtain a diaryl carbonate in good yield without using phosgene which is a compound having strong toxicity by carrying out a decarbonylation reaction of a diaryl oxalate at a specific temperature. CONSTITUTION: A diaryl oxalate is subjected to a decarbonylation reaction at 330-800 deg.C, especially 450-650 deg.C in a vapor phase. Furthermore, specifically, e.g. (A) the diaryl oxalate dissolved in a solid, a melted liquid or a solvent is previously vaporized and fed to a reactor together with (B) an inert gas such as nitrogen gas and (C) an inert filler such as quartz having no acid point, hydroxyl group, etc., in a feed amount of 10-1000g/L.hr (L is a unit volume; hr is a unit time) and a space velocity of 100-6000hr and then, the reaction of the diaryl oxalate is carried out under ordinary or reduced pressure.
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公开(公告)号：JP2003113143A
公开(公告)日：2003-04-18
申请号：JP2001310899
申请日：2001-10-09
Applicant: UBE INDUSTRIES
Inventor： YAMAMOTO YOSHIFUMI , TSUJI TETSUO , HARUTA ATSUSHI
IPC: B01J31/22 , C07B61/00 , C07C2/84 , C07C67/343 , C07C69/76
Abstract: PROBLEM TO BE SOLVED: To provide a new improved method for producing biphenyls by which the biphenyls especially the biphenyls having asymmetrical substituents such as a tetraester of 2,3,3',4'-biphenyltetracarboxylic acid are selectively produced by oxidatively coupling benzene-based aromatic compounds, especially the aromatic compounds having substituents such as a diester of phthalic acid. SOLUTION: The benzene-based aromatic compound, especially the aromatic compound having substituents such as the diester of the phthalic acid are oxidatively coupled in the presence of a palladium salt, a copper salt and a bidentate compound foaming a complex of the palladium salt with a nitrogen atom and an oxygen atom, in an atmosphere containing molecular oxygen.
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公开(公告)号：JP2000026374A
公开(公告)日：2000-01-25
申请号：JP8311099
申请日：1999-03-26
Applicant: UBE INDUSTRIES
Inventor： MATSUZAKI TOKUO , YAMAMOTO YOSHIFUMI
Abstract: PROBLEM TO BE SOLVED: To directly and readily produce a cyclic carbonate from carbon monoxide under a mild reaction condition by reacting the carbon monoxide with an aliphatic polyhydric alcohol and a nitrous ester of an aliphatic monohydric alcohol in the presence of a platinum group metal in a liquid phase. SOLUTION: (A) Carbon monoxide is reacted with (B) an aliphatic polyhydric alcohol (e.g. a 2-12C aliphatic polyhydric alcohol such as ethylene glycol) and (C) a nitrous ester of an aliphatic monohydric alcohol (e.g. the nitrous ester of a 1-12C aliphatic monohydric alcohol, such as methyl nitrite) in the presence of a platinum group metal (e.g. palladium, platinum, rhodium and Ruthenium) or a compound thereof (e.g. an inorganic acid salt such as a halide and a sulfate, and an organic acid salt such as an acetate) in a liquid phase, preferably at 20-150 deg.C under a pressure from a normal pressure to 200 kg/cm2G, more preferably at 30-80 deg.C under the pressure from the normal pressure to 30 kg/cm2G.
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公开(公告)号：JPH09255628A
公开(公告)日：1997-09-30
申请号：JP7025496
申请日：1996-03-26
Applicant: UBE INDUSTRIES
Inventor： YAMAMOTO YOSHIFUMI , SUGIMOTO TSUNEMI , KURATO TOSHIO
Abstract: PROBLEM TO BE SOLVED: To readily produce a diaryl carbonate useful as a raw material for producing a polycarbonate at a sufficient rate of reaction by using a diaryl oxalate as a raw material with out using strongly toxic phosgene. SOLUTION: A diaryl oxalate is heated in the presence of an oxide of an alkaline earth metal in the vapor phase in a reactor to carry out the decarbonylating reaction. For example, diphenyl oxalate is cited as the diaryl oxalate and an oxide of magnesium, calcium, etc., is preferred as the oxide of the alkaline earth metal. The oxide may be supported on a catalyst carrier such as alumina, silica or active carbon for use. The decarbonylating reaction is preferably carried out under conditions of 200-600 deg.C, preferably about 300-500 deg.C and 10-10,000hr , preferably about 50-5,000hr space velocity by feeding a raw material gas containing an inert gas such as N2 gas to the reactor.
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公开(公告)号：JPH08253442A
公开(公告)日：1996-10-01
申请号：JP5903995
申请日：1995-03-17
Applicant: UBE INDUSTRIES
Inventor： MATSUZAKI TOKUO , HIDAKA MIKIO , KURATO TOSHIO , YAMAMOTO YOSHIFUMI , ODAN KYOJI , NISHIHIRA KEIGO , TANAKA HIDEJI
Abstract: PURPOSE: To obtain a carbonate at a high reaction rate in a high selectivity form CO and a nitrous acid ester using a catalyst in which a platinum group metal (compound) is supported on a specified alumina carrier. CONSTITUTION: Carbon monoxide is subjected to vapor phase contact reaction with a nitrous acid ester (preferably methyl nitrite) in the presence of an oxidizing chlorine compound (e.g. hydrogen chloride) using a catalyst in which a platinum group metal or its compound is supported on an alumina support containing a metal selected from among alkali (or alkaline earth)metals or its compound in an amount of 0.1-5wt.% in terms of the metal oxide to provide the objective compound. The catalyst is preferably obtained by adding an alkal (or alkaline earth)metal or its compound to an alumina support having
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