专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US5276200A Method of preparing sodium formyl acetone and 4,4-dimethoxy-2-butanone 失效
标题翻译：制备甲酰基丙酮和4,4-二甲氧基-2-丁酮的方法
公开(公告)号：US5276200A
公开(公告)日：1994-01-04
申请号：US961402
申请日：1992-10-15
申请人： Keigo Nishihira , Shuji Tanaka , Masahiro Kondo
发明人： Keigo Nishihira , Shuji Tanaka , Masahiro Kondo
IPC分类号： C07C45/68 , C07C45/71 , C07C45/72 , C07C49/175 , C07C49/24 , C07C45/64
CPC分类号： C07C49/24 , C07C45/68 , C07C45/71 , C07C45/72 , C07C49/175
摘要： The present invention provides a method of preparing sodium formyl acetone using acetone, methyl formate and sodium methoxide as raw materials. A mixture consisting of an acetone and a methyl formate is supplied to a methanol solution of sodium methoxide, or an acetone and a methyl formate are separately supplied simultaneously to the methanol solution of sodium methoxide. The resultant mixture is sufficiently stirred over a predetermined period of time so as to carry out the reaction to form sodium formyl acetone. Also provided is a method of preparing 4,4-dimethoxy-2-butanone. In this method, the reaction mixture obtained in the reaction to form sodium formyl acetone is directly charged into a reaction vessel simultaneously with sulfuric acid to neutralize and acetalize sodium formyl acetone contained in the reaction mixture so as to obtain 4,4-dimethoxy-2-butanone.
摘要翻译：本发明提供使用丙酮，甲酸甲酯和甲醇钠作为原料制备甲酰基丙酮钠的方法。将由丙酮和甲酸甲酯组成的混合物供应到甲醇钠的甲醇溶液中，或者丙酮和甲酸甲酯分别同时供应到甲醇钠的甲醇溶液中。将所得混合物在预定的时间内充分搅拌，以进行反应以形成甲酰基丙酮钠。还提供了制备4,4-二甲氧基-2-丁酮的方法。在该方法中，将形成甲酰基丙酮的反应中得到的反应混合物与硫酸同时直接加入到反应容器中，中和反应混合物中所含的甲酰基丙酮缩醛，得到4,4-二甲氧基-2 丁酮。

12. 发明授权

US5892091A Catalyst for decarbonylation reaction 失效
标题翻译：催化剂用于脱羰反应
公开(公告)号：US5892091A
公开(公告)日：1999-04-06
申请号：US889390
申请日：1997-07-08
申请人： Katsumasa Harada , Yoichi Imbe , Keigo Nishihira , Shuji Tanaka , Satoru Fujitsu , Ryoji Sugise , Koichi Kashiwagi , Toshihiko Sumida , Takashi Doi , Masayuki Nishio
发明人： Katsumasa Harada , Yoichi Imbe , Keigo Nishihira , Shuji Tanaka , Satoru Fujitsu , Ryoji Sugise , Koichi Kashiwagi , Toshihiko Sumida , Takashi Doi , Masayuki Nishio
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 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.
摘要翻译：由具有三价或五价磷原子和至少一个碳 - 磷键的有机磷化合物或有机磷化合物和含卤素原子的化合物的组合的催化剂对脱碳作用是有效的，即用于释放一氧化碳来自在其分子结构中含有-CO-CO-O-部分的化合物。

13. 发明授权

US5869729A Method of producing an ester compound 失效
标题翻译：酯化合物的制备方法
公开(公告)号：US5869729A
公开(公告)日：1999-02-09
申请号：US670552
申请日：1996-06-27
申请人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Noriaki Manada , Toshio Kurafuji , Masato Murakami
发明人： Keigo Nishihira , Shuji Tanaka , Yuki Nishida , Noriaki Manada , Toshio Kurafuji , Masato Murakami
IPC分类号： C07C68/00 , C07C69/96
CPC分类号： C07C68/00
摘要： An ester compound, for example, carbonic acid ester or succinic acid ester, is produced by catalytically reacting, in gas phase, carbon monoxide with a nitrous acid ester and optionally an olefin in the presence of a catalyst and in the presence of a chlorine-containing substance, bringing the reaction product-containing mixed gas into contact with a solid catalyst such as activated carbon or inorganic oxide to reduce the content of the chlorine-containing substance, cool-condensing the resultant mixed gas, and collecting the target ester compound from the condensed liquid.
摘要翻译：酯化合物，例如碳酸酯或琥珀酸酯，是通过在催化剂存在下，在氯气存在下，在气相中，一氧化碳与一种亚硝酸酯和任选的一种烯烃进行催化反应，使含有反应产物的混合气体与固体催化剂如活性炭或无机氧化物接触以降低含氯物质的含量，冷凝所得混合气体，并将目标酯化合物从冷凝液体。

14. 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。

15. 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。

16. 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。

17. 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。

18. 发明授权

US5162563A Process for preparing a diester of carboxylic acid 失效
标题翻译：制备羧酸酯的方法
公开(公告)号：US5162563A
公开(公告)日：1992-11-10
申请号：US599134
申请日：1990-10-17
申请人： Keigo Nishihira , Katsuhiko Mizutare , Shuji Tanaka
发明人： Keigo Nishihira , Katsuhiko Mizutare , Shuji Tanaka
IPC分类号： C07C68/00 , C07C69/96
CPC分类号： C07C68/00
摘要： A process for preparing a diester of carbonic acid which comprises bringing carbon monoxide into contact with an ester of nitrous acid in a vapor phase at a pressure greater than atmospheric pressure in the presence of a solid catalyst having (a) a platinum group metal or a compound thereof and (b) at least one metal compound of a metal selected from the group consisting of iron, copper, bismuth, cobalt, nickel and tin; carried on a carrier.

19. 发明授权

US06191302B1 Process for producing alkyl nitrite 有权
标题翻译：亚硝酸烷基酯的制备方法
公开(公告)号：US06191302B1
公开(公告)日：2001-02-20
申请号：US09176372
申请日：1998-10-21
申请人： Keigo Nishihira , Shuji Tanaka , Shinichi Yoshida
发明人： Keigo Nishihira , Shuji Tanaka , Shinichi Yoshida
IPC分类号： C07C20302
CPC分类号： C07C201/04 , C07C203/00
摘要： An alkyl nitrite can be produced on an industrial scale with a high efficiency and with a low yield of by-products by the process wherein nitrogen oxide-containing feed gas is brought into an alkyl alcohol liquid in a distillation column reactor while circulating a liquid fraction, produced in the reactor and containing the alkyl alcohol, through a circulation path including a lower section of the reactor and a cooler to remove the reaction heat vigorously generated in the reactor, and while controlling the weight ratio of the circulating liquid fraction to the total alkyl alcohol fed into the reactor to 50:1 to 200:1, the molar ratio of the total alkyl alcohol fed to the reactor and contained in the circulating liquid fraction to nitrogen oxide in the feed gas to 20:1 to 150:1, and the content of the alkyl alcohol in the liquid fraction to 15 to 60% by weight; and the resultant gas fraction containing the target alkyl nitrite is collected from the reactor.
摘要翻译：亚硝酸烷基酯可以在工业规模上以高效率和低产率的副产物生产，其中将含氮氧化物的进料气体在蒸馏塔反应器中进入烷基醇液体，同时使液体馏分在反应器中生产并含有烷基醇，通过包括反应器的下部的循环路径和冷却器，以除去在反应器中剧烈产生的反应热，同时控制循环液体馏分与总的重量比将进料到反应器中的烷基醇的摩尔比为50:1至200:1，进料到反应器中并且包含在循环液体馏分中的总烷基醇与进料气体中的氮氧化物的摩尔比为20:1-150:1，并且液体馏分中的烷基醇的含量为15〜60重量％从反应器收集含有目标亚硝酸烷基酯的所得气体馏分。

20. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式