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公开(公告)号:US20160369091A1
公开(公告)日:2016-12-22
申请号:US14901948
申请日:2014-09-24
Applicant: BOREALIS AG
Inventor: Thomas HJERTBERG , Ravindra TUPE , Undo WAHNER , Tanja Piel , Yi LIU , Romina Alexandra ALBUNIA , Floran PRADES , Joseph THORMAN , Dusan JEREMIC
IPC: C08L23/08
CPC classification number: C08L23/0815 , C08F2/001 , C08L2205/02 , C08L2205/03 , C08F210/16 , C08F210/14 , C08F2500/07 , C08F2500/12
Abstract: A process for polymerizing ethylene in the presence of a polymerization catalyst by copolymerizing ethylene with a comonomer selected from the group of C4-C10 alpha-olefins in three polymerization stages. The polymers produced in the three stages have different melt flow rates. The polymer composition produced by the process has good mechanical properties and can be used for making pipes. The process has a good productivity and provides a stable and economic operation.
Abstract translation: 在聚合催化剂存在下,通过在三个聚合阶段使乙烯与选自C 4 -C 10α-烯烃的共聚单体共聚来制备乙烯的方法。 在三个阶段中生产的聚合物具有不同的熔体流动速率。 该方法生产的聚合物组合物具有良好的机械性能,可用于制造管材。 该过程具有良好的生产力,并提供稳定和经济的运作。