Iron bis(imino) aryl catalysts and methods thereof

Patent metadata

Field	Value
Publication number	US-11718635-B2
Application number	US-202017119161-A
Country	US
Kind code	B2
Filing date	Dec 11, 2020
Priority date	Dec 16, 2019
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

The present disclosure related to iron-containing compounds including a 2,6-diiminoaryl ligand and one or more substituted hydrocarbyl substituents. Catalysts, catalyst systems, and processes of the present disclosure can provide polyolefins with high or low molecular weight, low comonomer content, narrow polydispersity indices, and broad orthogonal composition distribution. The present disclosure provides new and improved iron-containing catalysts with enhanced solubility in hydrophobic (nonpolar) solvents.

First claim

What is claimed is:

1. A catalyst compound, wherein the catalyst compound is selected from:

2. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

3. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

4. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

5. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

6. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

7. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

8. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

9. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

10. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

11. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

12. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

13. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

14. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

15. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

16. The catalyst compound of claim 1 , wherein the catalyst compound is selected from:

17. A process for the production of an ethylene alpha-olefin copolymer comprising: polymerizing ethylene and at least one C 3 -C 20 alpha-olefin by contacting the ethylene and the at least one C 3 -C 20 alpha-olefin with a catalyst system including the catalyst compound of claim 1 , in one or more continuous stirred tank reactors or loop reactors, in series or in parallel, at a reactor pressure of from 0.05 MPa to 1,500 MPa and a reactor temperature of from 30° C. to 230° C. to form an ethylene alpha-olefin copolymer.

18. The process of claim 17 , wherein the ethylene alpha-olefin copolymer has an Mw value of from 10,000 g/mol to 500,000 g/mol, and Mz value of from 10,000 g/mol to 1,500,000 g/mol, an Mn value of 1,000 g/mol to 300,000 g/mol, and a PDI of from 1 to 6.

19. The process of claim 18 , wherein the ethylene alpha-olefin copolymer has a comonomer content of from about 0.00001 wt % to about 8 wt %.

20. The process of claim 19 , wherein the ethylene alpha-olefin copolymer has a melting point of from 130° C. to 150° C.

Assignees

• Exxonmobil Chemical Patents Inc

Inventors

• Holtcamp Matthew W
• Halbach Robert L
• Kuppuswamy Subramaniam
• Bedoya Matthew S

Classifications

• C07F15/025 Primary

  without a metal-carbon linkage · CPC title

• C08F4/7042

  NNN · CPC title

• C08F210/16

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

• C07F15/02

  Iron compounds · CPC title

• C08F10/02 Primary

  Ethene · CPC title