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    • 9. 发明授权
    • Alkylene carbonate process
    • 碳酸亚丙酯工艺
    • US4314945A
    • 1982-02-09
    • US863354
    • 1977-12-22
    • Charles H. McMullenJames R. NelsonBernard C. ReamJoseph A. Sims, Jr.
    • Charles H. McMullenJames R. NelsonBernard C. ReamJoseph A. Sims, Jr.
    • C07D317/36C07D317/38C07D319/06
    • C07D317/38C07D317/36
    • 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%.
    • 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。