Catalyst precursor and olefin polymerization processes
申请人:——
公开号:US20030105254A1
公开(公告)日:2003-06-05
Catalyst precursor compounds having both (i) a polydentate ligand which comprises a cyclic moiety as well as a heteroatom and (ii) a protected hydride/hydrocarbyl ligand bonded to a metal atom, as well as olefin polymerization catalyst systems based thereupon, polymerization processes using such catalyst systems and polymers produced thereby.
具有以下两个特征的催化剂前体化合物:(i) 包括一个环状基团和一个杂原子的多齿配体,以及 (ii) 与金属原子键合的受保护的氢化物/烃基配体,以及基于此的烯烃聚合催化剂体系,使用此类催化剂体系的聚合过程和由此产生的聚合物。
MIXED CATALYST COMPOSITIONS FOR THE PRODUCTION OF POLYOLEFINS
Mixed catalyst compositions for the production of polyolefins
申请人:Job C. Robert
公开号:US20050170950A1
公开(公告)日:2005-08-04
A solid, hydrocarbon insoluble catalyst composition comprising: A) a solid, particulated complex comprising moieties of at least magnesium, a Group 4 transition metal, and a halide; B) one or more α-amino-substituted- or α-imino-substituted-2-alkylpyridine compounds; C) one or more organoaluminum cocatalyst compounds; D) optionally one or more internal electron donors; and E) optionally one or more selectivity control agents, a method of preparation and a method of use in polymerizing olefins is disclosed.