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公开(公告)号：MY116979A
公开(公告)日：2004-04-30
申请号：MYPI9704462
申请日：1997-09-25
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , HARADA KATSUMASA , SUGISE RYOJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: A DIARYL CARBONATE IS PRODUCED BY DECARBONYLATING A DIARYL OXALATE, WHICH CAN BE PREPARED BY TRANSESTERIFICATION OF A DIALKYL OXALATE WITH A HYDROXYARYL COMPOUND, IN THE PRESENCE OF A CATALYST, WHILE REMOVING THE RESULTANT CARBON MONOXIDE AS A BY-PRODUCT, AND THEN OPTIONALLY REFINED BY AN EVAPORATION AND/OR DISTILLATION, AND THEN THE RESULTANT DIARYL CARBONATE IS CONDENSATION-POLYMERIZED WITH A POLYHYDROXYL COMPOUND, WHILE RECOVERING A RESULTANT HYDROXYARYL COMPOUND FROM THE REACTION SYSTEM, TO PRODUCE A POLYCARBONATE.
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公开(公告)号：DE69713560T2
公开(公告)日：2003-02-20
申请号：DE69713560
申请日：1997-09-25
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , HARADA KATSUMASA , SUGISE RYOJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.
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公开(公告)号：SG70030A1
公开(公告)日：2000-01-25
申请号：SG1997003560
申请日：1997-09-25
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , HARADA KATSUMASA , SUGISE RYOJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.
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公开(公告)号：ES2176579T3
公开(公告)日：2002-12-01
申请号：ES97116704
申请日：1997-09-25
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , HARADA KATSUMASA , SUGISE RYOJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.
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公开(公告)号：DE69713560D1
公开(公告)日：2002-08-01
申请号：DE69713560
申请日：1997-09-25
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , HARADA KATSUMASA , SUGISE RYOJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.
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Patent Agency Ranking
公开(公告)号：ID18491A
公开(公告)日：1998-04-16
申请号：ID973282
申请日：1997-09-25
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , HARADA KASUMASA , SUGISE RYOJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: A diaryl carbonate is produced by decarbonylating a diaryl oxalate, which can be prepared by transesterification of a dialkyl oxalate with a hydroxyaryl compound, in the presence of a catalyst, while removing the resultant carbon monoxide as a by-product, and then optionally refined by an evaporation and/or distillation, and then the resultant diaryl carbonate is condensation-polymerized with a polyhydroxyl compound, while recovering a resultant hydroxyaryl compound from the reaction system, to produce a polycarbonate.
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公开(公告)号：JPH05112636A
公开(公告)日：1993-05-07
申请号：JP33640291
申请日：1991-10-22
Applicant: UBE INDUSTRIES
Inventor： SHIOTANI AKINORI , YAMAGUCHI HIROAKI , WASHIO KATSUTOSHI
Abstract: PURPOSE:To obtain a high-molecular weight polycarbonate having narrow molecular weight distribution and excellent thermal stability by subjecting a bishydroxy compound and a bisaryl carbonate to melt polycondensation in the presence of a catalyst of phosphorus compound. CONSTITUTION:A bishydroxy compound [e.g. bis-(4-hydroxyphenyl)methane, etc.] is blended with a bisaryl carbonate (e.g. diphenyl carbonate) in a ratio of 1:1-1.1 (molecular ratio) and subjected to melt polycondensation in the presence of preferably 100-5,000ppm (based on bishydroxy compound) of a catalyst of phosphorus compound (e.g. triphenyl phosphate) of the formula (R1 to R3 are 1-25C alkyl, 6-25C aryl, 1-25C alkyloxy or 6-25C aryloxy) to give the objective polycarbonate.
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公开(公告)号：JPH01308417A
公开(公告)日：1989-12-13
申请号：JP13827688
申请日：1988-06-07
Applicant: UBE INDUSTRIES
Inventor： YANO TAKEFUMI , KAI YOSHIYUKI , WASHIO KATSUTOSHI , SAKAKIBARA YASUHISA
IPC: C08L51/08 , C08F283/00 , C08F290/00 , C08F299/00 , C08G59/32
Abstract: PURPOSE:To obtain a transparent thin plate freed from volume change, strain, etc., by curing a thermosetting resin composition obtained by adding a radical polymerization initiator, an OH-containing (meth)acrylate and a release agent to a solution containing a specified urethane (meth)acrylate in a smooth mold. CONSTITUTION:A thermosetting resin composition is obtained by adding an organic peroxide or another radical polymerization initiator, an OH-containing (meth)acrylate and a release agent to a solution of urethane (meth)acrylate obtained by reacting a diisocyanate compound (e.g., hexamethylene diisocyanate) with a dihydroxy organic compound (e.g., bisphenol Z) and an OH-containing (meth)acrylate (e.g., 2-hydroxypropyl methacrylate) in a radical-polymerizable vinyl compound (e.g., styrene) as a solvent. This composition is cured at 30-200 deg.C in a smooth mold to obtain a thin plate.
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公开(公告)号：JPH10152552A
公开(公告)日：1998-06-09
申请号：JP26200197
申请日：1997-09-26
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA HIDEJI , HARADA KATSUMASA , SUGISE RIYOUJI , SHIOTANI AKINORI , WASHIO KATSUTOSHI
Abstract: PROBLEM TO BE SOLVED: To provide a process for the industrial production of a polycarbonate by producing a diaryl oxalate from a dialkyl oxalate, converting the diaryl oxalate into a diaryl carbonate by decarbonylation reaction and subjecting the obtained diaryl carbonate to polycondensation reaction (e.g. melt- polymerization). SOLUTION: This process for the production of a polycarbonate comprises the 1st step to react a dialkyl oxalate with a phenolic compound to produce a diaryl oxalate, the 2nd step to form a diaryl carbonate and by-produced carbon monoxide by the decarbonylation reaction of the diaryl oxalate and the 3rd step to produce a polycarbonate and a by-produced phenolic compound by the polycondensation reaction of the diaryl carbonate with a polyhydric hydroxy compound. The phenolic compound produced in the 3rd step is separated, recovered and reused in the reaction of the 1st step.
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公开(公告)号：JPH02102209A
公开(公告)日：1990-04-13
申请号：JP25205188
申请日：1988-10-07
Applicant: UBE INDUSTRIES
Inventor： YANO TAKEFUMI , YAMAGUCHI HIROAKI , TOYAHARA YOSHINOBU , WASHIO KATSUTOSHI
IPC: C08F220/12 , C08F2/00 , C08F2/02 , C08F220/00 , C08F220/10 , C08F220/18 , G11B7/24 , G11B7/253
Abstract: PURPOSE:To produce a transparent material improved in moisture absorption and solvent resistance by adding an allylic compound to a mixture of an alkyl acrylate with an acrylate, and casting the mixture in the presence of a radical initiator to polymerize. CONSTITUTION:100 pts.wt. mixture comprising an alkyl acrylate of formula I and an acrylate of formula II with the weight ratio being 9/1-5/5 is added to 0.5-20 pts.wt. compound having 2 or more -C-C=C- groups (allyl groups) as a crosslinking agent to obtain a composition. The resulting composition is polymerized by casting in the presence of a radical polymerization initiator to produce a transparent material. In the formula, R1 and R2 are each 1-5C alkyl; R3 is H or 1-5C alkyl; R4 is phenyl, benzyl or 5-20C cycloalkyl represented by formula III. The polymerization temperature is 50-150 deg.C, and also the polymerization can be carried out in a multi-stage reaction with varying the polymerization temperature.
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