METAL-LIGAND COMPLEX, CATALYST COMPOSITION COMPRISING SAME FOR ETHYLENE BASED POLYMERIZATION, AND METHOD FOR PREPARING ETHYLENE-BASED POLYMER BY USING SAME
METAL-LIGAND COMPLEX, CATALYST COMPOSITION COMPRISING SAME FOR ETHYLENE BASED POLYMERIZATION, AND METHOD FOR PREPARING ETHYLENE-BASED POLYMER BY USING SAME
PROCESS FOR SELECTIVELY POLYMERIZING ETHYLENE AND CATALYST THEREFOR
申请人:Klosin Jerzy
公开号:US20110282018A1
公开(公告)日:2011-11-17
The present invention generally relates to a process that selectively polymerizes ethylene in the presence of an alpha-olefin, and to a metal-ligand complex (precatalyst) and catalyst useful in such processes, and to related compositions. The present invention also generally relates to ligands and intermediates useful for preparing the metal-ligand complex and to processes of their preparation.
[EN] CATALYST SYSTEMS FOR OLEFIN POLYMERIZATION<br/>[FR] SYSTÈMES CATALYSEURS POUR LA POLYMÉRISATION D'OLÉFINES
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2016003878A1
公开(公告)日:2016-01-07
The instant invention provides a procatalyst comprising a metal-ligand complex of Formula (I): (Formula I), wherein M, X, n, each Z, L, R21, R22 and R1 through R20 are each described herein.
The invention provides a process to form an olefin-based polymer, said process comprising polymerizing at least one olefin in the presence of at least one catalyst system comprising the reaction product of the following:
A) at least one cocatalyst; and
B) a procatalyst comprising a metal-ligand complex of Formula (I), as described herein:
PROCESS FOR PRODUCING LOW MOLECULAR WEIGHT ETHYLENE- AND ALPHA-OLEFIN-BASED MATERIALS
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:US20140357918A1
公开(公告)日:2014-12-04
The present invention generally relates to a process that prepares polyethylenes, poly-α-olefins or poly(co-ethylene-?-olefin) having backbone weight average molecular weights less than 2500 daltons. The process uses a metal-ligand complex as a precatalyst and can be carried out at temperatures ranging from 30° C. to 300° C. The relatively low molecular weight of the products enables improved viscosity control for a wide variety of applications.