Monocyclopentadienyl pyridyl hydroxyl amine catalyst compounds and systems for olefin polymerization

Patent metadata

Field	Value
Publication number	US-11919981-B2
Application number	US-202117504978-A
Country	US
Kind code	B2
Filing date	Oct 19, 2021
Priority date	Oct 22, 2020
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

This invention relates to mono cyclopentadienyl pyridyl hydroxyl amine catalyst compounds represented by Formula I(a) or I(b):wherein: M is a group 3-12 metal; R1 is a hydrocarbyl group or a silyl group; R2, R3, R4, R5, R6, R7, R8, R9, and R10 are independently selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, silyl, amino, aryloxy, halogen and phosphino, wherein any two adjacent R groups may be joined to form a saturated or unsaturated single or multicyclic hydrocarbyl ring or heterocyclic ring; and each X1 and X2 is independently an anionic leaving group or X1 and X2 may be joined together to form a dianionic group.

First claim

What is claimed is:

1. A catalyst compound represented by Formula I(a) or I(b):

wherein:
M of Formula I(a) or I(b) is Ti, Zr, or Hf;
R 1 is independently selected from the group consisting of a hydrocarbyl group and a silyl group;
R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are independently selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, silyl, amino, aryloxy, halogen and phosphino, wherein any two adjacent R groups may be joined to form a saturated or unsaturated hydrocarbyl ring or heterocyclic ring, wherein the ring has 5, 6, 7, or 8 ring atoms and wherein substitutions on the ring can join to form additional rings; and

each X 1 and X 2 is independently an anionic leaving group and X 1 and X 2 may be joined together to form a dianionic group.

2. The catalyst compound of claim 1 , wherein R 1 of Formula I(a) or I(b) is selected from the group consisting of alkyl and aryl.

3. The catalyst compound of claim 2 , wherein R 1 of Formula I(a) or I(b) is cycloalkyl.

4. The catalyst compound of claim 1 , wherein R 1 of Formula I(a) or I(b) is selected from the group consisting of t-butyl, 3,5-dimethylphenyl, 2,3,4,5,6-pentamethylphenyl, and 2,4, 6-triisopropylphenyl.

5. The catalyst compound of claim 1 , wherein R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 of Formula I(a) or I(b) are independently selected from the group consisting of hydrogen, alkyl, aryl, and alkoxy.

6. The catalyst compound of claim 1 , wherein R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 of Formula I(a) or I(b) are independently selected from the group consisting of hydrogen, methyl, t-butyl, phenyl, 1-methylphenyl, t-butoxy, 3,5-dimethylphenyl, 2,3,4,5,6-pentamethylphenyl, and 2,4,6-triisopropylphenyl.

7. The catalyst compound of claim 1 , wherein the catalyst compound is a catalyst compound of Formula I(a) selected from the group consisting of:

8. The catalyst compound of claim 7 , wherein the catalyst compound of Formula I(a) is selected from the group consisting of:

9. The catalyst compound of claim 1 , wherein the catalyst compound is a catalyst compound of Formula I(b) selected from the group consisting of:

10. The catalyst compound of claim 7 , wherein the catalyst compound of Formula I(b) is selected from the group consisting of:

11. 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 at least one polymerization reactor at a reactor pressure of from 2 MPa to 200 MPa and a reactor temperature of from 10° C. to 250° C. to form an ethylene alpha-olefin copolymer.

12. The process of claim 11 , wherein the ethylene alpha-olefin copolymer has an Mw value of 1,000,000 g/mol or greater.

13. The process of claim 11 , wherein the ethylene alpha-olefin copolymer has an Mw value of from 1,000,000 g/mol to 8,000,000 g/mol.

14. The process of claim 11 , wherein the ethylene alpha-olefin copolymer has an Mw/Mn value of 4 or less.

15. The process of claim 14 , wherein the ethylene alpha-olefin copolymer has an Mw/Mn value of from 1 to 2.

16. The process of claim 14 , wherein the ethylene alpha-olefin copolymer has a comonomer content of from 1 wt % to 8 wt %.

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 introducing the ethylene and the at least one C 3 -C 20 alpha-olefin to a catalyst system in at least one polymerization reactor at a reactor pressure of from 2 MPa to 200 MPa and a reactor temperature of from 10° C. to 250° C. to form an ethylene alpha-olefin copolymer, wherein the catalyst system comprises:
an activator;
an optional support; and
a catalyst compound represented by Formula I(a) or I(b):

wherein:
M of Formula I(a) or I(b) is Ti, Zr, or Hf;
R 1 is independently selected from the group consisting of a hydrocarbyl group and a silyl group;
R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , and R 10 are independently selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, silyl, amino, aryloxy, halogen and phosphino, wherein any two adjacent R groups may be joined to form a saturated or unsaturated hydrocarbyl ring or heterocyclic ring, wherein the ring has 5, 6, 7, or 8 ring atoms and wherein substitutions on the ring can join to form additional rings; and
each X 1 and X 2 is independently an anionic leaving group and X 1 and X 2 may be joined together to form a dianionic group.

18. The process of claim 17 , wherein R 1 of Formula I(a) or I(b) is selected from the group consisting of alkyl and aryl.

19. The process of claim 17 , wherein the catalyst compound is one or more of:

Assignees

• Exxonmobil Chemical Patents Inc

Inventors

• Carpenter Alex E
• Singleton Danielle G

Classifications

• C08F210/16 Primary

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

• C07F17/00 Primary

  Metallocenes · CPC title

• C08F4/64048

  NO · CPC title

• C08F110/02

  Ethene · CPC title

• C08F2410/01

  Additive used together with the catalyst, excluding compounds containing Al or B · CPC title