Catalyst for the polymerization of olefins

Patent metadata

Field	Value
Publication number	US-12012476-B2
Application number	US-202017780177-A
Country	US
Kind code	B2
Filing date	Nov 28, 2020
Priority date	Dec 4, 2019
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A catalyst for the polymerization of olefins made from or containing (a) a solid catalyst component containing Mg, Ti and optionally an internal electron donor compound (ID), (b) an aluminum alky compound, and (c) an external electron donor (ED) selected from non-aromatic diazo compounds.

First claim

What is claimed is:

1. A catalyst for the polymerization of olefins comprising;
(a) a solid catalyst component containing Mg, Ti and optionally an internal electron donor compound (ID),
(b) an aluminum alkyl compound, and
(c) an external electron donor (ED) of formula (I)

wherein the R 1 to R 3 groups, equal to, or different from, each other, are selected from hydrogen or C 1 -C 15 hydrocarbon groups, R 4 group is selected from hydrogen, C 1 -C 15 hydrocarbon groups, and —NR 2 groups wherein R groups have the same meaning as R 1 to R 3 groups.

2. The catalyst according to claim 1 , wherein the solid catalyst component (a) contains at least one internal electron donor compound (ID) being a molecule containing at least one functional group selected from the group consisting of esters, ethers, ketones, carbamates, carbonates, amines, amides, nitriles, alkoxysilanes, and mixtures thereof.

3. The catalyst according to claim 1 , wherein the ID compound is monofunctional or multifunctional.

4. The catalyst according to claim 3 , wherein the ID compound is multifunctional and contains two or more functional groups selected from the group consisting of esters, ethers, ketones, carbamates, and carbonates.

5. The catalyst according to claim 3 , wherein the ID compound is monofunctional and contains a functional group selected from the group consisting of C 1 -C 8 alkyl esters of aliphatic mono carboxylic acids and C 2 -C 20 aliphatic ethers.

6. The catalyst according to claim 1 , wherein R 1 is selected from C 1 -C 15 hydrocarbon groups.

7. The catalyst according to claim 1 , wherein, in the ED compound of formula (I), R 1 and R 2 are selected from C 1 -C 10 alkyl groups, R 3 is selected from hydrogen or C 1 -C 8 alkyl groups, and R 4 is selected from —NR 2 groups.

8. The catalyst according to claim 1 , wherein the ED compound of formula (I) is tetra-methyl guanidine.

9. The catalyst according to claim 4 , wherein the solid catalyst component (a) comprises a difunctional ID compound.

10. The catalyst according to claim 1 , wherein, in the ED compound of formula (I), the couples of R1-R4 and R2-R3 are joined together to form non-aromatic ring structures.

11. The catalyst according to claim 10 , wherein the ring structures are made of five or more members.

12. The catalyst according to claim 11 , wherein the couple R 1 -R 4 forms a 5-7 members saturated ring structure and the couple R 2 -R 3 forms a six-member unsaturated ring, having a C═N double bond.

13. The catalyst according to claim 1 , wherein the ED compound of formula (I) is selected from selected from the group consisting of 1.8-diazabicyclo[5.4.0]undec-7-ene (DBU) and 1,5-diazabicyclo[4.3.0]non-5-ene (DBN).

14. The catalyst according to claim 5 , wherein the solid catalyst component (a) comprises a monofunctional ID compound.

15. A process for the homopolymerization or copolymerization of olefins CH 2 ═CHR, wherein R is hydrogen or a hydrocarbyl radical with 1-12 carbon atoms, comprising polymerizing or copolymerizing CH 2 ═CHR in the presence of the catalyst according to claim 1 .

Assignees

• Basell Poliolefine Italia Srl

Inventors

• Guidotti Simona
• Liguori Dario
• Morini Giampiero

Classifications

• C08F10/06

  Propene · CPC title

• C08F4/651

  Pretreating with non-metals or metal-free compounds · CPC title

• C08F4/6495

  containing nitrogen · CPC title

• C08F110/06

  Propene · CPC title

• C08F4/6545 Primary

  and metals of C08F4/64 or compounds thereof · CPC title