The authors acknowledge the MCyT (project MAT2001-1309) for financial support and the EC (project COST-D12/0016/98). J. C. acknowledges CAM for a fellowship.
METAL-LIGAND COMPLEX, OLEFIN POLYMERIZATION CATALYST DERIVED THEREFROM, AND OLEFIN POLYMERIZATION METHOD UTILIZING THE CATALYST
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:US20160311837A1
公开(公告)日:2016-10-27
A metal-ligand complex has formula (I): wherein J, L, M, R
1
, R
2
, R
3
, R
4
, X, p, q, and r are defined herein. The metal-ligand complex is useful as a catalyst or catalyst precursor for olefin polymerization.
Post-metallocene complexes based on bis(naphtoxy) pyridine and bis(naphtoxy) thiophene ligands for the polymerisation of ethylene and alpha-olefins
申请人:Total Petrochemicals Research Feluy
公开号:EP2093229A1
公开(公告)日:2009-08-26
The present invention relates to the field of group 4 post-metallocene complexes based on sterically encumbered bis(naphtoxy)pyridine and bis(naphtoxy)thiophene ligands. It also relates to the use of such post-metallocene complexes in the polymerisation of ethylene and alpha-olefins.
Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom
申请人:Symyx Technologies, Inc.
公开号:US20040014950A1
公开(公告)日:2004-01-22
New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.
Boroxide Complexes of the Group 4 Metals: A “Noninnocent” Ligand in Olefin Polymerization
作者:Sarah C. Cole、Martyn P. Coles、Peter B. Hitchcock
DOI:10.1021/om050202+
日期:2005.6.20
group 4 metal complexes supported by the boroxide anion, [OB(mes)2]-, is described and their application in α-olefin polymerization discussed. The compounds MOB(mes)2}2Cl2(THF)2 [1, M = Ti; 2, M = Zr; 3, M = Hf] have been synthesized from MCl4(THF)n [M = Ti, n = 0; M = Zr/Hf, n = 2] and 2 equiv of lithiated dimesitylborinic acid. Accidental hydrolysis during the preparation of the zirconium analogue afforded