Catalysts

Patent metadata

Field	Value
Publication number	US-11352376-B2
Application number	US-201716461517-A
Country	US
Kind code	B2
Filing date	Nov 17, 2017
Priority date	Nov 18, 2016
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

A complex of formula (I)whereinM is zirconium or hafnium;each X independently is a sigma ligand; L is a divalent bridge selected from —R′2C—, —R′2C—CR′2—, —R′2Si—, —R′2Si—SiR′2—, —R′2Ge—, wherein each R′ is independently a hydrogen atom or a C1-C20-hydrocarbyl .group optionally containing one or more silicon atoms or heteroatoms of Group 14-16 of the periodic table or fluorine atoms, and optionally two R′ groups taken together can form a ring;R2 and R2′ are each independently a C1-C20 hydrocarbyl group, —OC1-20 hydrocarbyl group or —SC1-20 hydrocarbyl group;R5 is a —OC1-20 hydrocarbyl group or —SC1-20 hydrocarbyl group, said R5 group being optionally substituted by one or more halo groups;R5′ is hydrogen or a C1-20 hydrocarbyl group; —OC1-20 hydrocarbyl group or —SC1-20 hydrocarbyl group; said C1-20 hydrocarbyl group being optionally substituted by one or more halo groups;R6 and R6′ are each independently a C1-20 hydrocarbyl group; —OC1-20 hydrocarbyl group or —SC1-20 hydrocarbyl group;each R1 and R1′ are independently —CH2Rx wherein Rx are each independently H, or a C1-20 hydrocarbyl group, optionally containing heteroatoms.

First claim

The invention claimed is:

1. A complex of formula (II)

wherein
M is zirconium or hafnium;
each X is independently a hydrogen atom, a halogen atom, a C 1-6 alkoxy group, a C 1-6 alkyl group, a phenyl group, or a benzyl group;
R 2 and R 2′ are each independently a C 1 -C 10 alkyl group;
R 5′ is hydrogen or ZR 3′ ;
Z is O or S;
R 3 and R 3′ are each independently a C 1-10 linear or branched alkyl, C 2-10 alkenyl, C 3-10 cycloalkyl, C 3-10 cycloalkenyl, C 6-10 aryl, C 7-10 alkylaryl, or C 7-10 arylalkyl group, optionally substituted by one or more halo groups;
R 6 and R 6′ are each independently a C 1-10 alkyl group or a C 6-10 aryl group;
each R 8 is independently a C 1-20 hydrocarbyl group or wherein two R 8 groups taken together with the atoms to which they are attached form a ring; and
each R x is independently H or a C 1-10 alkyl group.

2. The complex as claimed in claim 1 , wherein R 2 and R 2′ are independently a linear or branched C 1-6 alkyl group.

3. The complex as claimed in claim 1 , wherein R 6 and R 6′ are independently a linear or branched C 1-10 alkyl group.

4. The complex as claimed in claim 1 , wherein R 6 is a branched C 3-8 alkyl group, and R 6′ is a linear C 1-8 alkyl group or branched C 3-8 alkyl group.

5. The complex as claimed in claim 1 , wherein:
R 3 is a C 1-6 alkyl group; and
R 3′ is a C 1-6 alkyl group.

6. The complex as claimed in claim 1 , wherein each R x is H or C 1-6 alkyl.

7. The complex as claimed in claim 1 , wherein said complex is of formula (IIIa) or formula (IIIb):

wherein
each R 8 is independently a C 1-6 alkyl group or C 3-7 cycloalkyl group;
R 6 is a C 1-10 alkyl group;
R 6′ is a C 1-10 alkyl group;
R 5′ is hydrogen or OR 3 ; and
R 2 and R 2′ are independently a C 1-6 alkyl.

8. The complex as claimed in claim 1 , wherein said complex is of formula (IVa) or formula (IVb):

wherein
each R x is independently H or a C 1-4 alkyl group.

9. The complex as claimed in claim 1 , wherein said complex is of formula (V):

wherein
each R x is independently H or methyl; and
R 6′ is a linear or branched C 1-4 hydrocarbyl group.

10. The complex as claimed in claim 1 , wherein the complex is symmetrical.

11. The complex as claimed in claim 1 , wherein the complex is of formula

12. A catalyst comprising
(i) the complex as claimed in claim 1 ; and
(ii) a cocatalyst comprising a compound of a group 13 metal.

13. The catalyst of claim 12 , wherein the catalyst is a solid catalyst.

14. A process for the manufacture of the catalyst as claimed in claim 12 , the process comprising:
forming a liquid/liquid emulsion system, which comprises a solution of catalyst components (i) and (ii) dispersed in a solvent so as to form dispersed droplets, and
solidifying said dispersed droplets to form solid particles.

15. The catalyst of claim 12 , wherein the catalyst is supported on silica.

16. A process for the polymerization of at least one olefin, the process comprising reacting said at least one olefin with the catalyst as claimed in claim 12 .

Assignees

• Borealis Ag

Inventors

• Ajellal Noureddine
• Resconi Luigi
• Izmer Vyatcheslav V
• Kononovich Dmitry S
• Voskoboynikov Alexander Z
• Virkkunen Ville

Classifications

• C07F17/00 Primary

  Metallocenes · CPC title

• C08F10/06

  Propene · CPC title

• C07C13/32

  with condensed rings · CPC title

• C08F4/65908

  in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+ · CPC title

• C08F4/6498

  containing another heteroatom · CPC title