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1. 发明授权

US4314945A Alkylene carbonate process 失效
标题翻译：碳酸亚丙酯工艺
公开(公告)号：US4314945A
公开(公告)日：1982-02-09
申请号：US863354
申请日：1977-12-22
申请人： Charles H. McMullen , James R. Nelson , Bernard C. Ream , Joseph A. Sims, Jr.
发明人： Charles H. McMullen , James R. Nelson , Bernard C. Ream , Joseph A. Sims, Jr.
IPC分类号： C07D317/36 , C07D317/38 , C07D319/06
CPC分类号： C07D317/38 , C07D317/36
摘要： A process for making alkylene carbonate by the reaction of carbon dioxide and an alkylene oxide of the formula ##STR1## wherein R, R.sub.1, R.sub.2 and R.sub.3 are one or more of hydrogen, alkyl, aryl, alkaryl, aralkyl, cycloalkyl, allyloxy, chloroalkyl, and aryloxy to produce the corresponding carbonate, which comprises:(a) providing a homogeneous liquid phase reaction zone in which the predominant material therein is the alkylene carbonate;(b) providing a catalytic amount of an alkylene oxide carbonation catalyst to said liquid phase;(c) having dissolved in said liquid phase sufficient CO.sub.2 to provide a molal amount therein which exceeds the molal amount of the catalyst;(d) providing a CO.sub.2 pressure in the reaction zone of between about 150 psig and about 750 psig;(e) maintaining a sufficient amount of the alkylene oxide in the reaction to maintain the pressure and temperature thereof;(f) maintaining the reaction zone at a temperature at which the alkylene oxide and CO.sub.2 react to form alkylene carbonate, which temperature is not greater than about 200.degree. C.; and(g) correlating the reaction zone temperature and pressure to yield an alkylene carbonate efficiency of at least about 99% and a conversion of at least 99.5%.
摘要翻译：通过二氧化碳和下式的烯化氧的反应制备碳酸亚烷基酯的方法，其中R，R 1，R 2和R 3是氢，烷基，芳基，烷芳基，芳烷基，环烷基，烯丙氧基，氯代烷基和芳氧基以产生相应的碳酸酯，其包括：（a）提供均匀的液相反应区，其中主要材料是碳酸亚烷基酯; （b）向所述液相提供催化量的烯化氧碳酸化催化剂; （c）在所述液相中溶解足够的CO 2以提供超过催化剂的摩尔量的摩尔量; （d）在反应区域内提供介于约150psig至约750psig之间的CO 2压力; （e）在反应中保持足够量的环氧烷以保持其压力和温度; （f）将反应区保持在烯化氧和CO 2反应以形成碳酸亚烷基酯的温度，该温度不大于约200℃; 和（g）使反应区温度和压力相关，以产生至少约99％的碳酸亚烷基酯的效率和至少99.5％的转化率。

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