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公开(公告)号：DE60123531T2
公开(公告)日：2007-07-05
申请号：DE60123531
申请日：2001-08-06
Applicant: UBE INDUSTRIES
Inventor： SUGISE RYOJI , TANAKA SHUJI , KASHIWAGI KOHICHI , DOI TAKASHI , II HIROFUMI , NISHIO MASAYUKI , YOSHIDA SHINICHI , ASADA YUTAKA , MIYAMOTO KAZUO
Abstract: A composition consisting essentially of a diaryl carbonate and contains a furan ring-containing compound in an amount of not more than 1ppm is favorably employable for producing less colored polycarbonate. A process for preparing a composition comprising a diaryl carbonate and a furan ring-containing compound in an amount of not more than 1ppm, from a reaction mixture of decarbonylation of a diaryl oxalate. A process for preparing polycarbonate which comprises reacting a polyhydric compound with a composition comprising a major portion of a diaryl carbonate and a furan ring-containing compound in an amount of not more than 1ppm.
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公开(公告)号：AT341532T
公开(公告)日：2006-10-15
申请号：AT01118724
申请日：2001-08-06
Applicant: UBE INDUSTRIES
Inventor： SUGISE RYOJI , TANAKA SHUJI , KASHIWAGI KOHICHI , DOI TAKASHI , II HIROFUMI , NISHIO MASAYUKI , YOSHIDA SHINICHI , ASADA YUTAKA , MIYAMOTO KAZUO
Abstract: A composition consisting essentially of a diaryl carbonate and contains a furan ring-containing compound in an amount of not more than 1ppm is favorably employable for producing less colored polycarbonate. A process for preparing a composition comprising a diaryl carbonate and a furan ring-containing compound in an amount of not more than 1ppm, from a reaction mixture of decarbonylation of a diaryl oxalate. A process for preparing polycarbonate which comprises reacting a polyhydric compound with a composition comprising a major portion of a diaryl carbonate and a furan ring-containing compound in an amount of not more than 1ppm.
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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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公开(公告)号：DE69707732D1
公开(公告)日：2001-12-06
申请号：DE69707732
申请日：1997-03-11
Applicant: UBE INDUSTRIES
Inventor： NISHIHIRA KEIGO , TANAKA SHUJI , NISHIDA YUKI , II HIROFUMI , FUJITSU SATORU , HARADA KATSUMASA , SUGISE RYOJI , KASHIWAGI KOICHI , DOI TAKASHI
Abstract: A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).
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Patent Agency Ranking
公开(公告)号：DE69703778T2
公开(公告)日：2001-05-03
申请号：DE69703778
申请日：1997-10-06
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , IMBE YOICHI , SUGISE RYOJI , KASHIWAGI KOICHI , DOI TAKASHI , NISHIHIRA KEIGO , TANAKA SHUJI , II HIROFUMI
Abstract: A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of: 1) performing a decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphorus compound catalyst to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst; 2) recovering the diaryl carbonate from the reaction mixture; and 3) performing a decarbonylation reaction of a diaryl oxalate in the presence of the reaction mixture from which the diaryl carbonate has been recovered and to which a halogen atom-containing compound is added, to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst.
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公开(公告)号：SG70027A1
公开(公告)日：2000-01-25
申请号：SG1997003136
申请日：1997-08-27
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , IMBE YOICHI , SUGISE RYOJI , KASHIWAGI KOICHI , SUMIDA TOSHIHIKO , DOI TAKASHI , NISHIO MASAYUKI , NISHIHIRA KEIGO , TANAKA SHIJI , FUJITSU SATORU
IPC: C07C67/333 , C07C68/00 , C07D307/68 , C07D333/38 , C07C69/96 , C07C69/76
Abstract: A catalyst composed of an organic phosphorus compound having a trivalent or pentavalent phosphorus atom and at least one carbon-phosphorus bonding or a combination of the organic phosphorus compound and a halogen atom-containing compound is effective for decarbonylation, that is, for releasing carbon monoxide from a compound containing a moiety of -CO-CO-O- in its molecular structure.
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公开(公告)号：ES2124045T3
公开(公告)日：1999-01-16
申请号：ES96105453
申请日：1996-04-04
Applicant: UBE INDUSTRIES
Inventor： HARADA KATSUMASA , IMBE YOICHI , SUGISE RYOJI , KASHIWAGI KOICHI , SUMIDA TOSHIHIKO , NISHIHIRA KEIGO
IPC: C07C67/333 , C07C68/00 , C07D307/68 , C07D333/38 , C07C69/96
Abstract: A diaryl carbonate is prepared at a high yield and a high selectivity by heating a diaryl oxalate in the presence of an organic phosphorous compound to release carbon monoxide therefrom. A halogen atom-containing compound can be employed in combination with the organic phosphorous compound.
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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：GB2111494B
公开(公告)日：1985-10-23
申请号：GB8234896
申请日：1982-12-07
Applicant: UBE INDUSTRIES
Inventor： HAMAMOTO TOSHIKAZU , SUGISE RYOJI
IPC: C07C201/08 , C07C67/00 , C07C201/00 , C07C205/52 , C07C79/42 , C07C76/02
Abstract: There is disclosed a method for preparing an ester of nitroacetic acid which comprises; (1) a first step of subjecting a vinyl ester of a fatty acid and a nitrogen oxide to reaction with each other in the presence of a gas containing molecular oxygen in a solvent; and (2) a second step of subjecting the resultant reaction product of the first step to reaction with an alcohol. According to the method of this invention, an ester of nitroacetic acid can effectively be obtained in higher yield.
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