PHOSPHINIMINE AMIDO-ETHER COMPLEXES

• US 20190330387A1
• Filed: 04/25/2019
• Published: 10/31/2019
• Est. Priority Date: 04/26/2018
• Status: Active Grant

• Current Assignee: Nova Chemicals
• Original Assignee: Nova Chemicals
• Inventors: Morrison, Darryl, Chisholm, P. Scott, Baar, Cliff, Lee, Graham, Smiley-Wiens, Janelle
• Granted Patent: US 10,669,355 B2
• Time in Patent Office: Days
• CPC Class Codes: C07F 9/5355 Phosphoranes containing the structure P=N-
• CPC Class Codes: C08F 10/02 Ethene
• CPC Class Codes: C08F 110/02 Ethene
• CPC Class Codes: C08F 210/14 Monomers containing five or more carbon atoms
• CPC Class Codes: C08F 210/16 Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
• CPC Class Codes: C08F 2500/02 Low molecular weight, e.g. <100,000 Da.
• CPC Class Codes: C08F 2500/03 Narrow molecular weight distribution, i.e. Mw/Mn < 3
• CPC Class Codes: C08F 2500/10 Short chain branches
• CPC Class Codes: C08F 2500/27 Amount of comonomer in wt% or mol%
• CPC Class Codes: C08F 4/64055 ON
• CPC Class Codes: C08F 4/64117 NNO
• CPC Class Codes: C08F 4/6428 with an aluminoxane, i.e. a compound containing an Al-O-Al- group
• CPC Class Codes: C08F 4/659 Component covered by group C08F4/64 containing a transition metal-carbon bond C08F4/64003 - C08F4/64196 take precedence
• CPC Class Codes: C08F 4/65908 in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
• CPC Class Codes: C08F 4/65912 in combination with an organoaluminium compound

Abstract

Provided in this disclosure are organometallic complexes that contain i) a metal atom selected from Hf and Zr; 2) a phosphinimine ligand; 3) an amido-ether ligand and at least one other ancillary ligand. The use of such a complex, in combination with an activator, as an olefin polymerization catalyst is demonstrated. The catalysts are effective for the copolymerization of ethylene with an alpha olefin (such as 1-butene, 1-hexene, or 1-octene) and enable the production of high molecular weight copolymers (Mw greater than 25,000) with good comonomer incorporation at high productivity.

Claims

1. A complex having the formula (PI)(AE)ML₂, wherein:

I) PI is a phosphinimine ligand defined by the formula;

2. The complex according to claim 1 wherein AE is an amido-ether ligand defined by the formula:

3. The complex according to claim 1 wherein AE is an amido-ether ligand defined by the formula:

4. An olefin polymerization catalyst system comprising:

A) an organometallic complex according to claim 1 and

B) an activator.

5. The olefin polymerization catalyst system according to claim 4 wherein the activator is selected from the group consisting of an aluminoxane;

an ionic activator;

and mixtures thereof.

6. A process for the polymerization of olefins comprising contacting one or more C₂ to C₁₀ alpha olefins with the olefin polymerization catalyst system of claim 4 under polymerization conditions.

7. The process of claim 6 wherein the one or more C₂ to C₁₀ alpha olefins consists of a) ethylene;

and b) one or more olefins selected from the group consisting of 1-butene;

1-hexene; and

1-octene.