Polymerization process for producing ethylene based polymers

Patent metadata

Field	Value
Publication number	US-9527940-B2
Application number	US-201314654875-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Dec 27, 2012
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

The instant invention provides a polymerization process for producing ethylene based polymers.
In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more α-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in in a dual reator system or a multiple reactor system, wherein first catalyst system comprises;
(a) one ore more procatalysts comprising a metal-ligand complex of formula (I):

First claim

We claim:

1. A polymerization process for producing ethylene based polymers comprising:
polymerizing ethylene and optionally one or more α-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a dual reactor system or a multiple reactor system, wherein first catalyst system comprises;
(a) one ore more procatalysts comprising a metal-ligand complex selected from the group consisting of

and
(b) one or more cocatalysts; wherein the ratio of total number of moles of the one or more metal-ligand complexes of formula (I) to total number of moles of the one or more cocatalysts is from 1:10,000 to 100:1.

Assignees

• Dow Global Technologies Llc

Inventors

• Demirors Mehmet
• Figueroa Ruth
• Klosin Jerzy
• Thomas Pulikkottil J
• Desjardins Sylvie
• Kapur Mridula
• Fontaine Philip P

Classifications

• C08F4/64193

  OOOO · CPC title

• C08F210/16 Primary

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

• C08F2/001

  Multistage polymerisation processes characterised by a change in reactor conditions without deactivating the intermediate polymer (C08F295/00, C08F297/00 take precedence) · CPC title

• C08F4/60193

  OOOO · CPC title

• Y02P20/582

  Recycling of unreacted starting or intermediate materials · CPC title