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公开(公告)号：JPH06199736A
公开(公告)日：1994-07-19
申请号：JP36133692
申请日：1992-12-28
Applicant: AGENCY IND SCIENCE TECHN , CHIKYU KANKYO SANGYO GIJUTSU
Inventor： MATSUDA AKIO , MASUDA TAKASHI , TAKAHASHI IKUO , KAWAMOTO KENJI
Abstract: PURPOSE:To provide a method for producing a 4c dicarboxylic acid di lower alkyl ester from lower alkyl ester, of acrylic acid, carbon monoxide and a lower saturated aliphatic monohydric alcohol in the presence of a cobalt carbonyl catalyst, giving the objective compound in a high yield even under industrially advantageous low pressure. CONSTITUTION:The method for producing a 4C dicarboxylic acid di lower alkyl ester by reacting a lower alkyl ester of acrylic acid with carbon monoxide and a lower saturated aliphatic monohydric alcohol in the presence of cobalt carbonyl and pyridine base at 100-120 deg.C comprises employing carbon monoxide containing 0.25-2vol.% of hydrogen gas to perform the reaction under a pressure of 25-50atm.
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公开(公告)号：JPH06122744A
公开(公告)日：1994-05-06
申请号：JP8452592
申请日：1992-03-05
Applicant: AGENCY IND SCIENCE TECHN , CHIKYU KANKYO SANGYO GIJUTSU , TOPPAN PRINTING CO LTD , DAICEL CHEM
Inventor： MASUDA TAKASHI , MATSUDA AKIO , SANO YOJI , TAKAHASHI IKUO , KAWAMOTO KENJI
Abstract: PURPOSE:To provide a production process whereby the copolymerization of carbon monoxide with formaldehyde can be smoothly performed without causing the deactivation of the catalyst, the problem of corrosion of the reactor by the catalyst can be improved, the reactional product can easily be separated from the catalyst, the repeated use of the catalyst is possible, and the catalyst can be disposed of without serious problems. CONSTITUTION:This production process comprises reacting carbon monoxide with formaldehyde or a formaldehyde polymer which forms formaldehyde on depolymerization in the presence of a catalyst comprising a cation-exchange resin prepared by sulfonating a copolymer of a styrenic monomer with a divinylbenzene monomer.
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公开(公告)号：JPH05112624A
公开(公告)日：1993-05-07
申请号：JP29791891
申请日：1991-10-18
Applicant: AGENCY IND SCIENCE TECHN , CHIKIYUU KANKYO SANGYO GIJUTSU , TOPPAN PRINTING CO LTD , DAICEL CHEM
Inventor： MASUDA TAKASHI , MATSUDA AKIO , SANO YOJI , TAKAHASHI IKUO , KAWAMOTO KENJI
IPC: C08G2/18
Abstract: PURPOSE:To efficiently obtain the subject copolymer free from corrosion, capable of readily carrying out separation and recovery of a catalyst and useful for coating, etc., by copolymerizing carbon monoxide with formaldehyde under specific conditions. CONSTITUTION:In a method for producing a carbon monoxide-formaldehyde copolymer by reacting carbon monoxide with formaldehyde, a solid catalyst such as silica-alumina is used as the catalyst and an organic solvent (e.g. hexafluoroisopropanol) capable of exhibiting a liquid-like state at ordinary temperature to 100 deg.C C and dissolving the copolymer or mixture thereof is used as the reaction solvent and a copolymer produced by the reaction is dissolved in the reaction solvent to provide the objective copolymer.
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公开(公告)号：JPH0426652A
公开(公告)日：1992-01-29
申请号：JP13052090
申请日：1990-05-21
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MATSUDA AKIO , MASUDA TAKASHI , MURATA KAZUHISA
Abstract: PURPOSE:To obtain the title compound in high yield by reacting butadiene with CO and an alcohol in the presence of cobalt-carbonyl and pyridine at two stages of different temperatures and adding paraffin to the resultant product and separating a catalyst complex. CONSTITUTION:Butadiene is reacted with CO and alcohol (preferably ethanol) in the presence of cobalt carbonyl and pyridine, preferably 3,5-dimethylpyridine at 120 deg.C to a temperature lower than 160 deg.C to afford 3-pentenoic acid ester as the intermediate. Then reaction temperature is raised directly without separating the intermediate and a reaction is carried out at 160-200 deg.C and paraffin is added to the resultant product to separate most of a pyridine complex which is a catalyst from a product layer and the separated pyridine complex is dissolved in acetone and recycled for next reaction. According to the above- mentioned method, troublesomeness of processes containing separation, recovery and regeneration of catalyst which was a defect of the conventional technique is remarkably reduced.
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公开(公告)号：JPS63179839A
公开(公告)日：1988-07-23
申请号：JP1181887
申请日：1987-01-21
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , MATSUDA AKIO , MASUDA TAKASHI
IPC: B01J31/20 , B01J31/00 , C07B61/00 , C07C27/00 , C07C29/141 , C07C29/38 , C07C31/20 , C07C31/22 , C07C31/24 , C07C67/00
Abstract: PURPOSE:To readily obtain a polyol in good yield, by reacting formaldehyde in the presence of H2, etc., using a specific catalyst. CONSTITUTION:Formaldehyde such as paraformaldehyde, etc., is reacted in the presence of H2 or mixed gas of H2 and CO, as necessary previously reacted under N2 for prescribed time and then reacted after substituting the mixed gas by H2, in an inert organic solvent such as dioxane, using an imidazolium salt expressed by formula I (R1-R4 are aliphatic or aromatic group or H; X is halogen) such as 3-ether-1-methylbenzimidazolium bromide, formula II or formula III (n is 1-10) and a ruthenium compound such as dodecacarbonyltriruthenium, as necessary an organic amine such as triethanolamine, as a catalyst to provide 2-4C polyol such as ethylene glycol, glycerin, erythritol. The above-mentioned reaction is carried out at ordinary temperature -300 deg.C in H2 pressure of 1-500 atmosphere when H2 exists.
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Patent Agency Ranking
公开(公告)号：JP2001089419A
公开(公告)日：2001-04-03
申请号：JP26392999
申请日：1999-09-17
Applicant: AGENCY IND SCIENCE TECHN , MASUDA TAKASHI , MATSUDA AKIO , SAKAGUCHI HIROSHI , HAMAYA TAKEO
Inventor： MASUDA TAKASHI , MATSUDA AKIO , SAKAGUCHI HIROSHI , HAMAYA TAKEO
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing dimethyl succinate by the reaction of methyl acrylate with carbon monoxide and methanol, by which the dimethyl succinate can be produced in a high yield under a profitable condition and by which a catalyst can effectively be separated. SOLUTION: This method for producing the dimethyl succinate contains a carbonylation reaction process for reacting methyl acrylate with carbon monoxide and methanol in the presence of the solution of a complex catalyst comprising cobalt carbonyl and a nitrogen-containing cyclic compound. Therein, the gas of a liquidized hydrocarbon is added to the reaction product solution obtained in the carbonylation reaction process to separate the dimethyl succinate from the catalyst solution.
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公开(公告)号：JP2001081168A
公开(公告)日：2001-03-27
申请号：JP30285799
申请日：1999-09-18
Applicant: AGENCY IND SCIENCE TECHN , MASUDA TAKASHI , NAKAYAMA KAZUO
Inventor： MASUDA TAKASHI , SO AMIN , NAKAYAMA KAZUO
IPC: C08G63/82 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To provide a method for industrially advantageously producing in the presence of a low-cost iron-based catalyst a high molecular weight aliphatic polyester-based polymer having a practically sufficient molecular weight and excellent in mechanical strength, and to provide the same polymer obtained by the method. SOLUTION: In polycondensation reaction using (i) a mixture of an aliphatic dicarboxylic acid (or its diester) with an aliphatic diol or (ii) a precondensate obtained from the mixture as a reaction raw material in the presence of a transesterification catalyst comprising an iron-based catalyst or the iron-based catalyst and a co-catalyst, this method for producing the aliphatic polyester- based polymer comprises using at least one protonic acid or its ester selected from the group consisting of an organic phosphonic acid represented by general formula (1) O=P(OH)2R or O=P(OH)R2 (R is an aliphatic group or an aromatic group), a silicate represented by formula (2) (RO)2SiR2 (R is an aliphatic group or an aromatic group), phosphoric acid, ammonium phosphate, an aliphatic and/or aromatic compound having sulfonate group or sulfate group and sulfuric acid as the co-catalyst.
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58.发明专利
公开(公告)号：JP2001064215A
公开(公告)日：2001-03-13
申请号：JP24284899
申请日：1999-08-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKAGUCHI HIROSHI , MASUDA TAKASHI , SATO TAKAHIRO , MATSUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To provide a method for making a gaseous hydrocarbon into a solid substance, a method for taking out the gaseous hydrocarbon in an original state from the solid substance and a method for handling the gaseous hydrocarbon utilizing these methods. SOLUTION: The method for solidifying a gaseous hydrocarbon comprises dissolving, emulsifying or suspending an aliphatic carboxylic acid metal salt and a hydrocarbon being a gas at a normal temperature in water to form a solid flocculate of the hydrocarbon. The method for handling the gaseous hydrocarbon comprises storing or transporting the solid flocculate. The method for regenerating the gaseous hydrocarbon comprises decomposing the solid flocculate by releasing or heating to obtain the gaseous hydrocarbon.
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公开(公告)号：JP2001031629A
公开(公告)日：2001-02-06
申请号：JP20119999
申请日：1999-07-15
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKAKURA TOSHIYASU , SAI JUNTETSU , MASUDA TAKASHI , SAKO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To obtain a carbonic ester useful as a raw material or the like for e.g. production of polycarbonates, with an extremely inexpensive carbonylation agent having no toxicity and corrosiveness and a catalyst easy in handling by reacting carbon dioxide with an acetal compound in the presence of a tin oxide. SOLUTION: This compound is obtained by reacting carbon dioxide with an acetal compound such acetonedimethylacetal in the presence of a tin oxide such as dibutyltin oxide, preferably in the presence of a Lewis acid such as a compound of the formula: BF3.OEt2 (Et is ethyl), preferably at 80-200 deg.C for 1-100 h. The amount of the above tin oxide to be used as a catalyst is preferably 1/10,000 to 1/50 mol per mol of the above acetal compound.
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公开(公告)号：JP2000281764A
公开(公告)日：2000-10-10
申请号：JP9339799
申请日：1999-03-31
Applicant: AGENCY IND SCIENCE TECHN
Inventor： OISHI AKIHIRO , TAGUCHI YOICHI , FUJITA KENICHI , IKEDA YOSHIKAZU , MASUDA TAKASHI , ISHIGAMI YUTAKA , NAKAYAMA KAZUO , KINUGASA SHINICHI , NAKAHARA HISAE
IPC: C08G63/08 , C08G63/78 , C08G63/82 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To provide a process for preparing a polymer polyester or polyester copolymer from a cyclic lactone through ring-opening polymerization. SOLUTION: In a preparation process of a polymer polyester, a cyclic lactone of the formula (wherein, (n) is 1, 3 or 4) is allowed to react under a high- pressure condition of at least 200 MPa without using a catalyst. Alternatively, in the absence of catalysts or in the presence of a non-metal esterification catalyst, a lactone mixture comprising two or more cyclic lactones of the formula is allowed to react under a high-pressure condition of at least 200 MPa.
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