Polymerizations for olefin-based polymers

Patent metadata

Field	Value
Publication number	US-11242422-B2
Application number	US-201916689657-A
Country	US
Kind code	B2
Filing date	Nov 20, 2019
Priority date	Jun 30, 2014
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

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:

First claim

The invention claimed is:

1. A procatalyst comprising a metal-ligand complex of Formula (I):

wherein:
M is zirconium being in a formal oxidation state of +2, +3, or +4; and n is 0 to 3, and when n is 0, X is absent; and
each X is independently selected from (C 1-40 )hydrocarbyl, (C 1-40 )heterohydrocarbyl, or halide;
when n is 1, X is a monodentate ligand or a bidentate ligand;
when n is 2, each X is an independently chosen monodentate ligand;
the metal-ligand complex is overall charge-neutral;
each Z is an oxygen atom
L is —CH 2 — or —CH 2 CH 2 —;
R 21 and R 22 are C;
R 2 , R 4 , R 5 , R 7 , R 8 , R 9 , R 10 , R 12 , R 13 and R 15 are a hydrogen atom;

R 1 and R 16 are independently selected from:

R 3 and R 14 are independently a substituted or unsubstituted (C 1 -C 40 )hydrocarbyl;
R 6 and R 11 are independently selected from the group consisting of a substituted or unsubstituted (C 1 -C 40 )hydrocarbyl, —CF 3 , and a halogen atom;
R 17 , R 18 , R 19 , and R 20 are a hydrogen atom or (C 1 -C 40 )hydrocarbyl;
provided that when R 17 is a hydrogen atom, R 18 is a substituted or unsubstituted (C 1 -C 40 )hydrocarbyl; and
when R 19 is a hydrogen atom, R 20 is a substituted or unsubstituted (C 1 -C 40 )hydrocarbyl;
provided that when R 1 and R 16 are both 3,6-(di-tert-butyl)carbozyl, and R 3 and R 14 are tert-octyl, and R 6 and R 11 are fluorine, then R 17 and R 19 are not methyl or R 18 and R 20 are not methyl; and
wherein, for Formula (I), one or more hydrogen atoms may optionally be substituted with one or more deuterium atoms.

2. The procatalyst of claim 1 , wherein each (C 1 -C 40 )hydrocarbyl, and each (C 1 -C 40 )heterohydrocarbyl is not substituted.

3. The procatalyst of claim 1 , wherein n is 2; each X, independently, is (C 1 -C 40 )hydrocarbyl or (C 1 -C 40 )heterohydrocarbyl.

Assignees

• Dow Global Technologies Llc

Inventors

• Fontaine Philip P
• Klosin Jerzy
• Szuromi Endre
• Iverson Carl N
• Rickaway Zach T
• Young Andrew J
• Brown Susan G
• Figueroa Ruth
• Demirors Mehmet
• Kapur Mridula

Classifications

• C08F210/16 Primary

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08F4/60193

  OOOO · CPC title

• C08F4/65908

  in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+ · CPC title

• C08F4/659

  Component covered by group C08F4/64 containing a transition metal-carbon bond {(C08F4/64003 - C08F4/64196 take precedence)} · CPC title

• C08F2500/08

  Low density, i.e. < 0.91 g/cm3 · CPC title