公开(公告)号：US20110160414A1

公开(公告)日：2011-06-30

申请号：US12737880

申请日：2009-09-21

申请人： Andreas Harald Gondorf ,  Jose Andre Laille ,  Claudine Viviane Lalanne-Magne

发明人： Andreas Harald Gondorf ,  Jose Andre Laille ,  Claudine Viviane Lalanne-Magne

IPC分类号： C08F2/34 ,  C08F210/14 ,  C08F4/42

CPC分类号： C08F2/34 ,  B01J8/1809 ,  B01J2208/00646 ,  B01J2208/00716 ,  C08F210/16 ,  C08F2400/02 ,  C08F210/14

摘要： The present invention relates to a process for polymerisation, and, in particular, to a process for start-up of a gas phase fluidised bed polymerisation reaction, said reaction comprising polymerisation of one or more monomers using a catalyst in a reactor, and said process comprising: a) providing a start-up bed of particles in the reactor in the presence of the one or more monomers but in the absence of the catalyst, b) introducing catalyst to the reactor to initiate reaction and start-up polymer production, said introduction being designated as time T0, c) at a time Ti, Ti being between 1 and 6 hours after T0, the value of Xi is less than a threshold value, wherein: Xi=Cumulative production in the time period T0 to Ti (Cumulative catalyst injection the time period T0 to Ti*PiC2=), PiC2= being the ethylene partial pressure in the reactor at the time Ti, d) subsequently stopping the injection of catalyst, e) taking a corrective action to address the low value of Xi.

摘要翻译： 本发明涉及一种聚合方法，特别涉及一种启动气相流化床聚合反应的方法，所述反应包括在反应器中使用催化剂聚合一种或多种单体，所述方法 包括：a）在所述一种或多种单体的存在下，但在不存在所述催化剂的情况下，在所述反应器中提供颗粒起始床，b）将催化剂引入所述​​反应器以引发反应和启动聚合物的生产，所述 引用被指定为时间T0，c）在时间Ti，Ti在T0之后1至6小时之间，Xi的值小于阈值，其中：Xi =时间段T0到Ti的累计产生（累积 催化剂注入时间T0到Ti * PiC2 =），PiC2 =时间Ti时反应器中的乙烯分压，d）随后停止催化剂的注入，e）采取纠正措施来解决Xi的低值 。