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    • 23. 发明申请
    • PROCESS FOR THE PREPARATION OF A POLYOLEFIN POLYMER WITH IMPROVED WAX DEPOSITION
    • 制备具有改进的WAX沉积物的聚烯烃聚合物的方法
    • WO2012028591A1
    • 2012-03-08
    • PCT/EP2011/064847
    • 2011-08-30
    • BASELL POLYOLEFINE GMBHMEIER, GerhardusKUEHL, Reinhard
    • MEIER, GerhardusKUEHL, Reinhard
    • C08F10/00C08F2/18
    • C08F2/04C08F210/16C08F2/001C08F2/14C08F210/14
    • Process for the preparation of a polyolefin polymer by continuously polymerizing one or more olefin monomers in suspension at temperatures of from 40°C to 120°C and pressures of from 0.1 to 10 MPa in the presence of a polymerization catalyst in at least one polymerization reactor, comprising a) withdrawing a suspension of solid polyolefin particles in a suspension medium from the polymerization reactor, wherein the suspension has a temperature of from 65°C to 120°C; b) feeding the suspension withdrawn from the polymerization reactor to a moderating vessel; c) keeping the suspension in the moderating vessel at a temperature of from 60°C to 85°C for a time sufficiently long that the mean residence time of the suspension in the moderating vessel is at least 5 min; d) withdrawing suspension from the moderating vessel; e) cooling the suspension withdrawn from the moderating vessel to a temperature of from 20°C to 55°C; and f) mechanically separating the solid polyolefin particles from the liquid suspension medium, and method for controlling the content of hydrocarbons with from 14 to 300 carbon atoms in a polyolefin polymer prepared by polymerizing one or more olefin monomers in suspension.
    • 在聚合催化剂存在下,在至少一个聚合反应器中,通过在40℃至120℃的温度和0.1至10MPa的压力下将悬浮液中的一种或多种烯烃单体连续聚合制备聚烯烃聚合物的方法 ,其包括a)从所述聚合反应器中取出固体聚烯烃颗粒在悬浮介质中的悬浮液,其中所述悬浮液的温度为65℃至120℃; b)将从聚合反应器中取出的悬浮液送入调节容器; c)将悬浮液保持在调节容器中在60℃至85℃的温度下足够长的时间,使得悬浮液在调节容器中的平均停留时间至少为5分钟; d)从缓和容器中取出悬浮液; e)将从调节容器中取出的悬浮液冷却至20℃至55℃的温度; 和f)从液体悬浮介质中机械分离固体聚烯烃颗粒,以及通过在悬浮液中聚合一种或多种烯烃单体制备的聚烯烃聚合物中控制含有14至300个碳原子的烃的含量的方法。