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公开(公告)号:US20080312390A1
公开(公告)日:2008-12-18
申请号:US11818480
申请日:2007-06-14
申请人: Jinyong Dong , Bochao Zhu , Zhichao Han , Changjun Zhang , Hui Niu , Shaoyi Wei , Jiguang Liu , Peihong Yao , Hongying Wang , Xiaojun Li , Dujin Wang , Pingsheng Zhang , Yajie Zhu , Junji Jia , Chunbo Huang
发明人: Jinyong Dong , Bochao Zhu , Zhichao Han , Changjun Zhang , Hui Niu , Shaoyi Wei , Jiguang Liu , Peihong Yao , Hongying Wang , Xiaojun Li , Dujin Wang , Pingsheng Zhang , Yajie Zhu , Junji Jia , Chunbo Huang
CPC分类号: C08F10/00 , C08F4/65912 , C08F4/65927 , C08F110/06 , C08F210/06 , C08F210/16 , C08F4/651 , C08F4/65904 , C08F2/001 , C08F2500/12 , C08F2500/21 , C08F2500/11
摘要: A process for preparing polypropylene compositions having high impact strength at low temperatures is disclosed in which the reaction is catalyzed by Ziegler-Natta/metallocene hybrid catalysts by the in-situ polymerization of one or more olefins of the formula CH2═CHR, in which R is hydrogen or an alkyl, cycloalkyl or aryl group having from 1 to 10 carbon atoms, and more specifically comprises preparing an olefin polymer by Ziegler-Natta catalyst components of the titanium or vanadium/metallocene hybrid catalysts while the metallocene components are inactivated beforehand by catalyst inactivators; and polymerizing one or more olefins in the presence of the above olefin polymer, followed by a reactivation of the metallocene components.
摘要翻译: 公开了一种制备在低温下具有高冲击强度的聚丙烯组合物的方法,其中该反应由齐格勒 - 纳塔/茂金属杂化催化剂通过一种或多种式CH 2 -CHR的烯烃的原位聚合催化,其中R 是氢或具有1至10个碳原子的烷基,环烷基或芳基,更具体地包括通过钛或钒/茂金属杂化催化剂的齐格勒 - 纳塔催化剂组分制备烯烃聚合物,同时通过催化剂预先将茂金属组分灭活 灭活剂 并在上述烯烃聚合物的存在下聚合一种或多种烯烃,接着再活化茂金属组分。