Catalyst systems for production of alpha olefin oligomers and polymers

摘要

Catalyst compositions containing N,N-bis[2-hydroxidebenzyl]amine transition metal compounds are disclosed. Methods for making these transition metal compounds and for using such compounds in catalyst compositions for the polymerization or oligomerization of alpha olefins also are provided.

主权项

1. A catalyst composition comprising:
(i) an N,N-bis[2-hydroxidebenzyl]amine compound having formula (IIa): wherein:
M is Ti, Zr, or Hf;X1 and X2 independently are a monoanionic ligand;each RB and RC independently is a halide, a C1 to C36 hydrocarbyl group, a C1 to C36 halogenated hydrocarbyl group, a C1 to C36 hydrocarboxy group, or a C1 to C36 hydrocarbylsilyl group, wherein p and q independently are 0, 1, 2, 3, or 4; andL is a C1 to C18 hydrocarbylene group; andD is a chemical group comprising at least one of nitrogen, oxygen, phosphorus, and sulfur; (ii) an activator-support comprising a solid oxide treated with an electron-withdrawing anion; and (iii) optionally, a co-catalyst.