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公开(公告)号:US20160272799A1
公开(公告)日:2016-09-22
申请号:US15032939
申请日:2014-12-12
Applicant: BOREALIS AG
Inventor: Ravindra TUPE , Jani AHO , Markku VAHTERI , Tuomas NOOPILA , Jarmo KELA
IPC: C08L23/08
CPC classification number: C08L23/0815 , C08F4/025 , C08F210/16 , C08L2205/025 , C08F210/08 , C08F2500/12 , C08F2500/26 , C08F2/001 , C08F4/6546 , C08F4/6565
Abstract: The present invention is a process for producing low density copolymers of ethylene and alpha-olefins having from 4 to 10 carbon atoms in three polymerization stages in the presence of an olefin polymerization catalyst where a low molecular weight copolymer of ethylene is produced in two of the stages and a high molecular weight copolymer in one of the stages. The resulting copolymers have a low density of not more than 920 kg/m3.
Abstract translation: 本发明是在烯烃聚合催化剂存在下在三个聚合阶段中生产具有4-10个碳原子的乙烯和α-烯烃的低密度共聚物的方法,其中乙烯的低分子量共聚物在 阶段和高分子量共聚物。 得到的共聚物具有不大于920kg / m 3的低密度。