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11. 发明授权

US06844464B2 Process for producing alkyl nitrite 有权
公开(公告)号：US06844464B2
公开(公告)日：2005-01-18
申请号：US10388302
申请日：2003-03-13
申请人： Ryoji Sugise , Shuji Tanaka , Hirofumi Ii , Kazuaki Mii
发明人： Ryoji Sugise , Shuji Tanaka , Hirofumi Ii , Kazuaki Mii
IPC分类号： C07C201/04 , C07C203/00 , C07C203/02
CPC分类号： C07C201/04 , C07C203/00
摘要： An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.

12. 发明授权

US5811573A Process for producing a diaryl carnonate 失效
标题翻译：生产碳酸二芳酯的方法
公开(公告)号：US5811573A
公开(公告)日：1998-09-22
申请号：US988759
申请日：1997-12-11
申请人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Ii Hirofumi , Satoru Fujitsu , Katsumasa Harada , Ryoji Sugise , Koichi Kashiwagi , Takashi Doi
发明人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Ii Hirofumi , Satoru Fujitsu , Katsumasa Harada , Ryoji Sugise , Koichi Kashiwagi , Takashi Doi
IPC分类号： C07C67/02 , C07C67/03 , C07C68/00 , C07C69/36 , C07C69/96
CPC分类号： C07C67/03 , C07C68/00 , Y02P20/127
摘要： 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).
摘要翻译：通过（A）在（a）草酸二芳基酯和酚化合物或（b）草酸烷基芳基酯在一个或两个阶段中存在下进行酯交换反应，以高产率生产具有高纯度的碳酸二芳基酯催化剂，以制备草酸二芳基酯，同时从反应体系中除去副产物; （B）从所得步骤（A）的反应产物混合物中收集草酸二芳基酯; （C）优选在含磷化合物的催化剂存在下使草酸二芳基酯进行脱羰反应，将草酸二芳基酯转化为相应的碳酸二芳基酯，同时从反应体系中除去包含一氧化碳的反应副产物; 和（D）从步骤（C）的反应产物混合物中收集碳酸二芳基酯。

13. 发明授权

US5631396A Process for continuously producing dimethyl carbonate 失效
标题翻译：连续生产碳酸二甲酯的方法
公开(公告)号：US5631396A
公开(公告)日：1997-05-20
申请号：US647164
申请日：1996-05-09
申请人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka , Yutaka Asada
发明人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka , Yutaka Asada
IPC分类号： B01J27/13 , C07B61/00 , C07C68/00 , C07C68/08 , C07C69/96
CPC分类号： C07C68/00
摘要： Dimethyl carbonate ((CH.sub.3 O).sub.2 CO) is continuously produced by a catalytic reaction (first step) of CO with CH.sub.3 NO.sub.2, with a significantly reduced loss of CH.sub.3 ONO by the process including a second step wherein (CH.sub.3 O).sub.2 CO in a reaction product gas of the first step is absorbed by dimethyl oxalate while contacting the resultant liquid fraction with CO to recover CH.sub.3 ONO, a third step wherein CH.sub.3 ONO is regenerated from NO in the condensed gas fraction produced in the second step and molecular oxygen and CH.sub.3 OH introduced into the third step, the resultant regenerated gas fraction being recycled and reused as a feed gas for the first step, and a fourth step wherein (CH.sub.3 O).sub.2 CO contained in the liquid fraction of the second step is collected.
摘要翻译：通过CO与CH3NO2的催化反应（第一步）连续制备碳酸二甲酯（（CH 3 O）2 CO），通过包括第二步骤的CH 3 NOO的显着降低的损失，其中（CH 3 O）2 CO在反应产物气体中的第一步被草酸二甲酯吸收，同时使所得液体馏分与CO接触以回收CH 3 NOO，第三步是在第二步产生的冷凝气体馏分中从NO再生CH3ONO，并将第三步中引入分子氧和CH3OH，所产生的再生气体馏分被再循环并重新用作第一步骤的进料气体;以及第四步骤，其中收集第二步骤的液体馏分中所含的（CH 3 O）2 CO。

14. 发明授权

US5648510A Process for preparation of diaryl carbonate 失效
标题翻译：碳酸二芳基酯的制备方法
公开(公告)号：US5648510A
公开(公告)日：1997-07-15
申请号：US627897
申请日：1996-04-03
申请人： Katsumasa Harada , Yoichi Imbe , Keigo Nishihira , Shuji Tanaka , Satoru Fujitsu , Ryoji Sugise , Koichi Kashiwagi , Toshihiko Sumida
发明人： Katsumasa Harada , Yoichi Imbe , Keigo Nishihira , Shuji Tanaka , Satoru Fujitsu , Ryoji Sugise , Koichi Kashiwagi , Toshihiko Sumida
IPC分类号： C07C67/333 , C07C68/00 , C07D307/68 , C07D333/38 , C07C69/96
CPC分类号： C07C67/333 , C07C68/00 , C07D307/68 , C07D333/38
摘要： 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.
摘要翻译：通过在有机磷化合物的存在下加热草酸二芳基酯从而释放一氧化碳，以高产率和高选择性制备碳酸二芳基酯。含卤原子的化合物可以与有机磷化合物组合使用。

15. 发明授权

US5922827A Process for producing a polycarbonate 失效
标题翻译：聚碳酸酯的制造方法
公开(公告)号：US5922827A
公开(公告)日：1999-07-13
申请号：US936666
申请日：1997-09-24
申请人： Keigo Nishihira , Shuji Tanaka , Katsumasa Harada , Ryoji Sugise , Akinori Shiotani , Katsutoshi Washio
发明人： Keigo Nishihira , Shuji Tanaka , Katsumasa Harada , Ryoji Sugise , Akinori Shiotani , Katsutoshi Washio
IPC分类号： C08G64/30 , C08G64/00
CPC分类号： C08G64/307
摘要： 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.
摘要翻译：碳酸二芳基酯是通过将草酸二芳基酯脱碳化而制得的，该草酸二芳基酯可以在催化剂存在下通过草酸二烷基酯与羟基芳基化合物的酯交换制备，同时除去作为副产物的所得一氧化碳，然后任选地通过蒸发和/或蒸馏，然后将所得碳酸二芳基酯与多羟基化合物缩聚，同时从反应体系中回收得到的羟基芳基化合物，以制备聚碳酸酯。

16. 发明授权

US5834615A Process for producing diaryl carbonate 失效
标题翻译：生产碳酸二芳酯的方法
公开(公告)号：US5834615A
公开(公告)日：1998-11-10
申请号：US936513
申请日：1997-09-24
申请人： Keigo Nishihira , Shuji Tanaka , Katsumasa Harada , Ryoji Sugise
发明人： Keigo Nishihira , Shuji Tanaka , Katsumasa Harada , Ryoji Sugise
IPC分类号： C07C68/00
CPC分类号： C07C68/00
摘要： A high purity diaryl carbonate is produced with a high efficiency by reacting carbon monoxide with an alkyl nitrite and/or an alkyl alcohol; reacting the resultant dialkyl oxalate with a hydroxyaryl compound, for example, phenol; decarbonylating the resultant diaryl oxalate to produce a diaryl carbonate and carbon monoxide; and collecting the diaryl carbonate from the decarbonylation reaction product mixture, the carbon monoxide produced in the decabonylation step being optionally reused for the production of the dialkyl oxalate.
摘要翻译：通过使一氧化碳与亚硝酸烷基酯和/或烷基醇反应，高效率地生产高纯度碳酸二芳基酯; 使得到的草酸二烷基酯与羟基芳基化合物例如苯酚反应; 将所得的草酸二芳酯脱碳酸化以产生碳酸二芳酯和一氧化碳; 并从脱羰基反应产物混合物中收集碳酸二芳基酯，在癸二酰化步骤中产生的一氧化碳任选地再次用于生产草酸二烷基酯。

17. 发明授权

US09174918B2 Process for preparing diaryl oxalate 有权
标题翻译：制备草酸二芳基酯的方法
公开(公告)号：US09174918B2
公开(公告)日：2015-11-03
申请号：US13522979
申请日：2011-01-20
申请人： Shuji Tanaka , Hirofumi Ii
发明人： Shuji Tanaka , Hirofumi Ii
IPC分类号： C07C67/02 , C07C67/03 , C07C68/00 , C08G64/30
CPC分类号： C07C67/03 , C07C68/00 , C08G64/307 , C07C69/36 , C07C69/96
摘要： Disclosed is a process for preparing a diaryl oxalate which comprises the step of transesterifying a dialkyl oxalate or/and an alkylaryl oxalate with an aryl alcohol in the presence of a tetra(aryloxy)titanium as a catalyst, wherein the tetra(aryloxy)titanium is fed into a reaction system of the transesterification as an aryl alcohol solution of the tetra(aryloxy)titanium which is prepared by reacting a tetraalkoxy titanium and an excess amount of the aryl alcohol and removing a by-producing alkyl alcohol.
摘要翻译：公开了一种制备草酸二芳基酯的方法，其包括在四（芳氧基）钛作为催化剂存在下，使草酸二烷基酯和/或草酸烷基芳基酯与芳基醇酯交换的步骤，其中四（芳氧基）钛为加入作为四（芳氧基）钛的芳基醇溶液的酯交换反应体系，其通过使四烷氧基钛和过量的芳基醇反应并除去副产物烷基醇制备。

18. 发明授权

US5705677A Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct 失效
标题翻译：草酸二苯酚 - 苯酚加合物，加合物的制备方法和从加合物生产草酸二苯酯的方法
公开(公告)号：US5705677A
公开(公告)日：1998-01-06
申请号：US757070
申请日：1996-11-26
申请人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Hirofumi Ii , Satoru Fujitsu
发明人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Hirofumi Ii , Satoru Fujitsu
IPC分类号： C07C69/017 , C07C69/36
CPC分类号： C07C69/017 , C07C69/36
摘要： A novel crystalline adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 and having a high purity is produced by melting a mixture containing diphenyl oxalate and phenol at a temperature of 100.degree. C. or more; cooling the melt to a temperature of less than 100.degree. C. to allow a resultant adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 to crystallize and deposit from the melt; and collecting the crystalline adduct. Diphenyl oxalate with a high purity is produced by melting the crystalline adduct to dissociate it into diphenyl oxalate and phenol, and evaporating away the dissociated phenol from the melt to collect the dissociated diphenyl oxalate.
摘要翻译：通过在100℃或更高的温度下熔化含有草酸二苯酯和苯酚的混合物，产生摩尔比为1:2且具有高纯度的草酸二苯酯和苯酚的新型结晶加合物; 将熔体冷却至低于100℃的温度，使所得到的草酸二苯酯和苯酚的摩尔比为1:2的加合物从熔体中结晶和沉积; 并收集结晶加合物。通过熔化结晶加合物将其分解成草酸二苯酯和苯酚，并将离解的苯酚从熔体中蒸发掉以收集离解的草酸二苯酯，从而产生高纯度的二苯基草酸盐。

19. 发明授权

US5534648A Process for continuously producing dimethyl carbonate 失效
标题翻译：连续生产碳酸二甲酯的方法
公开(公告)号：US5534648A
公开(公告)日：1996-07-09
申请号：US345568
申请日：1994-11-28
申请人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka
发明人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka
IPC分类号： C07C68/00 , C07C69/96
CPC分类号： C07C68/00
摘要： A process for producing dimethyl carbonate is carried out by a first step of catalytically reacting carbon monoxide with methyl nitrite to produce dimethyl carbonate; a second step of absorbing dimethyl carbonate contained in a gas fraction withdrawn from the first step by dimethyl oxalate; a third step of regenerating methyl nitrite by contacting nitrogen monoxide contained in a gas fraction withdrawn from the second step with a molecular oxygen-containing gas and methyl alcohol; a fourth step of collecting dimethyl carbonate by distilling a liquid fraction withdrawn from the second step; and a fifth step of producing and recovering methyl nitrite from a purge gas consisting of a minor portion of a gas fraction withdrawn from one of the second step and the third step by bringing the purge gas together with an ammonia-oxidation product gas into contact with methyl alcohol in a methyl nitrite-recovering column, to thereby produce and recover methyl nitrite contained in the recovering column with a high efficiency at a high level of safety.
摘要翻译：通过使一氧化碳与亚硝酸甲酯催化反应的第一步骤来制备碳酸二甲酯的方法来制备碳酸二甲酯; 从草酸二甲酯中吸收从第一步骤中排出的气体馏分中所含的碳酸二甲酯的第二步骤; 通过使从第二步骤抽出的气体馏分中含有的一氧化氮与含分子氧的气体和甲醇接触来再生亚硝酸甲酯的第三步骤; 通过蒸馏从第二步骤中抽出的液体馏分收集碳酸二甲酯的第四步骤; 以及第五步骤，通过将吹扫气体与氨氧化产物气体一起与氨氧化产物气体接触而从由第二步骤和第三步骤之一抽出的少部分气体馏分组成的吹扫气体中生产和回收亚硝酸甲酯，甲基亚硝酸甲酯回收塔中，从而以高效率高度安全地产生和回收回收塔中所含的亚硝酸甲酯。

20. 发明授权

US5292917A Process for purifying dimethyl carbonate 失效
标题翻译：净化碳酸二甲酯的方法
公开(公告)号：US5292917A
公开(公告)日：1994-03-08
申请号：US56891
申请日：1993-05-05
申请人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka
发明人： Keigo Nishihira , Shinichi Yoshida , Shuji Tanaka
IPC分类号： C07C68/08 , C07C69/96
CPC分类号： C07C68/08
摘要： Disclosed a process for purifying dimethyl carbonate which comprises distillating a mixture of dimethyl carbonate and methanol in the presence of dimethyl oxalate to separate and remove methanol.
摘要翻译：公开了一种纯化碳酸二甲酯的方法，该方法包括在草酸二甲酯存在下将碳酸二甲酯和甲醇的混合物蒸馏以除去甲醇。

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