[EN] OLEFIN POLYMERIZATION CATALYST SYSTEM AND POLYMERIZATION PROCESS [FR] SYSTÈME CATALYSEUR DE POLYMÉRISATION D'OLÉFINES ET PROCÉDÉ DE POLYMÉRISATION
摘要:
An olefin polymerization process is carried out in the presence of a catalyst system comprising a pre-polymerization catalyst, a boron-based catalyst activator, an alkylaluminoxane co-catalyst, and a hindered phenol compound. The pre-polymerization catalyst is a titanium complex and has an indenoindolyl ligand bridged to a phenoxy ligand via a silyl group. The catalyst system is effective at polymerizing ethylene with alpha-olefins in a solution phase polymerization process at high temperatures and produces ethylene copolymers with high molecular weight and high degrees of alpha-olefin incorporation.
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR20160040993A
公开(公告)日:2016-04-15
본 발명은 신규한 리간드 화합물, 메탈로센 화합물 및 이를 이용하는 올레핀계 중합체의 제조방법에 관한 것이다. 본 발명에 따른 메탈로센 화합물 및 이를 포함하는 촉매 조성물은 우수한 중합 활성을 가지면서도, 공단량체 삽입능이 우수하므로 넓은 분자량 분포를 갖고, 이에 따라 가공성이 우수한 올레핀계 중합체를 제조할 수 있다.
Amine elimination process for making single-site catalysts
申请人:Equistar Chemicals, LP
公开号:US06440889B1
公开(公告)日:2002-08-27
An amine-elimination process for making single-site catalysts is disclosed. First, an indenoindole or its synthetic equivalent reacts with a tetrakis(dialkylamino) Group 4 metal compound to give a tris(dialkyl-amino) compound. This versatile intermediate can be halogenated, alkylated, or reacted directly with cyclopentadienyl precursors to provide valuable indenoindolyl-Group 4 metal complexes. The process selectively provides mono-indenoindolyl complexes. In addition, it enables the economical preparation of desirable Cp- or Cp-like derivatives and allows the use of an inexpensive Group 4 transition metal source.