# US 9,434,752 B2 · Dinuclear metallocene compound, and a method for preparing the same

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- Number: US 9,434,752 B2
- Document ID: US9434752B2
- Status: Granted
- Kind: B2
- Application number: 14/895,875
- Filed: 2013-12-27
- Published: 2016-04-21
- Granted: 2016-09-06
- Earliest claimed: 2013-06-25
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Young Shil Do; Choong Hoon Lee; Seung Hwan Jung; Ji Joong Moon; Yoon Hee Cho; Sang Eun Park
- Web page: https://patentgrep.com/patent/US9434752B2

## CPC

- C07F 7/28: Titanium compounds
- C07F 17/00: Metallocenes
- C08F 4/76: selected from titanium, zirconium, hafnium, vanadium, niobium or tantalum
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

The present invention relates to a dinuclear metallocene compound with a new structure which can manufacture polyolefin having high molecular weight and to a method for preparing the same. The dinuclear metallocene compound according to the present invention is a dinuclear metallocene compound with a new structure, and, unlike a single-site catalyst, has high accessibility to a substrate, and thus, can provide a multi-site catalyst with high activity.

## Claims

### Claim 1

A dinuclear metallocene compound represented by the following Chemical Formula 1:
in the Chemical Formula 1,
R1 to R7 are independently hydrogen, an alkyl group having a carbon number of 1 to 20, or an aryl group having a carbon number of 6 to 20;
CY is a pentagonal or hexagonal aliphatic or aromatic ring containing nitrogen, unsubstituted or substituted with an alkyl group having a carbon number of 1 to 20;
M is titanium (Ti), zirconium (Zr), or hafnium (Hf);
X1 is halogen or an alkyl group having a carbon number of 1 to 20; and
n is an integer of 0 to 10.

### Claim 2 (depends on 1)

The dinuclear metallocene compound according to claim 1, wherein the compound of the Chemical Formula 1 is represented by the following structures:

### Claim 3

A method for preparing a dinuclear metallocene compound represented by the following Chemical Formula 1, comprising the step of reacting a compound represented by the following Chemical Formula 2 with a compound represented by the following Chemical Formula 3:
in the Chemical Formulae 1, 2 and 3,
R1 to R7 are independently hydrogen, an alkyl group having a carbon number of 1 to 20, or an aryl group having a carbon number of 6 to 20;
CY is a pentagonal or hexagonal aliphatic or aromatic ring containing nitrogen, unsubstituted or substituted with an alkyl group having a carbon number of 1 to 20;
M is titanium (Ti), zirconium (Zr), or hafnium (Hf);
X1 and X2 are halogen or an alkyl group having a carbon number of 1 to 20; and
n is an integer of 0 to 10.

### Claim 4 (depends on 3)

The method for preparing a dinuclear metallocene compound according to claim 3, wherein the step of reacting the compound represented by the Chemical Formula 2 with the compound represented by the Chemical Formula 3 is conducted by stirring at a temperature of −30 to 25° C.

### Claim 5 (depends on 3)

The method for preparing a dinuclear metallocene compound according to claim 3, wherein the step of reacting the compound represented by the Chemical Formula 2 with the compound represented by the Chemical Formula 3 is conducted in MTBE (methyl tertiary-butyl ether), or toluene solvent.