Catalyst components for the polymerization of olefins and catalysts therefrom obtained

Patent metadata

Field	Value
Publication number	US-11034781-B2
Application number	US-201716468628-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Dec 19, 2016
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A catalyst component made from or containing Ti, Mg, chlorine, an amount of a first internal donor selected from esters of aliphatic monocarboxylic acids (EAA), and an amount of a second internal donor selected from cyclic ethers (CE), wherein the EAA/CE molar ratio ranges from 0.02 to less than 20.

First claim

What is claimed is:

1. A catalyst component for the polymerization of olefins CH 2 ═CHR, wherein R is hydrogen or hydrocarbon radical having 1-12 carbon atoms comprising:
Ti,
Mg,
chlorine,
an amount of a first internal donor selected from esters of aliphatic monocarboxylic acids (EAA), and
an amount of a second internal donor selected from cyclic ethers (CE),
wherein the EAA/CE molar ratio ranges from 0.2 to 16.

2. The catalyst component according to claim 1 , wherein the esters (EAA) are C 1 -C 10 alkyl esters of C 2 -C 10 aliphatic monocarboxylic acids.

3. The catalyst component according to claim 2 , wherein the esters (EAA) are selected from C 2 -C 5 alkyl esters of C 2 -C 6 , aliphatic monocarboxylic acids.

4. The catalyst component according to claim 1 , wherein the (CE) internal donor is selected from cyclic ethers having 3-5 carbon atoms.

5. The catalyst component of claim 1 , wherein the (EAA+CE)/Ti molar ratio is higher than 1.5.

6. The catalyst component of claim 1 , wherein the content of (EAA) ranges from 1 to 30% wt with respect to the total weight of the catalyst component.

7. The catalyst component of claim 1 , wherein the content of (CE) ranges from 1 to 20% wt with respect to the total weight of the catalyst component.

8. The catalyst component of claim 1 , wherein the Mg/Ti molar ratio ranges from 5 to 50.

9. The catalyst component according to claim 1 , further comprising:
an olefin polymer in an amount ranging from 10 to 85% of the total weight of the catalyst component.

10. A catalyst for the polymerization of olefins comprising:
the product of the reaction between:
(a) a catalyst component according to claim 1 ; and
(b) an Al-alkyl compound.

11. The catalyst according to claim 10 , wherein the Al-alkyl compound is selected from the group consisting of Al-trialkyl compounds, alkyl-aluminum halides and mixtures thereof.

12. The catalyst according to claim 11 further comprising:
a compound selected from the group consisting of an external electron donor compound (ED) and a halogenated compound (D) as an activity enhancer.

13. A process comprising the step of homopolymerization or copolymerization of olefins CH 2 ═CHR, wherein R is hydrogen or hydrocarbon radical having 1-12 carbon atoms, carried out in the presence of the catalyst according to claim 10 .

14. The process according to claim 13 carried out in gas-phase.

Assignees

• Basell Poliolefine Italia Srl

Inventors

• Collina Gianni
• Di Diego Maria
• Gaddi Benedetta
• Gessi Piero
• Marturano Lorella
• Morini Giampiero

Classifications

• C08F4/6492

  containing aliphatic unsaturation · CPC title

• C08F4/6494

  containing oxygen · CPC title

• C08F4/651

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

• C08F110/02 Primary

  Ethene · CPC title

• C08F4/6493

  containing halogen · CPC title