Metallocene compound, metallocene-supported catalyst, and method of preparing polyolefin using the same

• US 10,450,390 B2
• Filed: 12/15/2015
• Issued: 10/22/2019
• Est. Priority Date: 12/15/2014
• Status: Active Grant

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Lee, Sung Min, Hong, Bog Ki, Cho, Kyung Jin, Kim, Se Young, Han, Chang Woan, Lee, Ki Soo, Song, Eun Kyoung
• Primary Examiner(s): Qian, Yun
• Application Number:
  US15/507,968
• Publication Number:
  US 20170283522A1
• Time in Patent Office: 1,407 Days
• Field of Search: None
• CPC Class Codes: C07C 13/465 Indenes; Completely or partially hydrogenated indenes
• CPC Class Codes: C07D 221/18 Ring systems of four or more rings
• CPC Class Codes: C08F 10/00 Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
• CPC Class Codes: C08F 12/00 Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
• CPC Class Codes: C08F 4/652 Pretreating with metals or metal-containing compounds
• CPC Class Codes: C08F 4/6592 containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
• CPC Class Codes: C08F 4/65922 containing at least two cyclopentadienyl rings, fused or not

Abstract

Provided are a novel metallocene compound, a metallocene-supported catalyst, and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure exhibits a high polymerization activity even when the metallocene compound is supported on a support, thereby showing an excellent activity and preparing a polyolefin having a high molecular weight.

Claims

1. A metallocene compound represented by the following Chemical Formula 1:

2. The metallocene compound of claim 1, wherein Q₁ and Q₂ of Chemical Formula 1 are a methyl group or a tert-butoxyhexyl group.

3. The metallocene compound of claim 1, wherein the compound represented by Chemical Formula 2a is one of the following structural formulae:

4. The metallocene compound of claim 1, wherein the compound represented by Chemical Formula 2b is one of the following structural formulae:

5. The metallocene compound of claim 1, wherein the compound represented by Chemical Formula 1 is one of the following structural formulae:

6. A metallocene-supported catalyst, comprising the metallocene compound of claim 1;

a cocatalyst compound; and

a support.

7. The metallocene-supported catalyst of claim 6, wherein the cocatalyst compound comprises one or more of compounds represented by the following Chemical Formula 3, Chemical Formula 4, and Chemical Formula 5:

—

[Al(R₁₆)—

O]_n—

 

 

[Chemical Formula 3]

wherein R₁₆s are the same as or different from each other, and each independently halogen;

C1 to C20 hydrocarbon;

or halogen-substituted C1 to C20 hydrocarbon; and

n is an integer of 2 or more;

J(R₁₇)₃ 

 

[Chemical Formula 4]

wherein R₁₇s are the same as defined in Chemical Formula 3; and

J is aluminum or boron;

[E-H]⁺[ZA₄]⁻

or [E]⁺[ZA₄]⁻

 

 

[Chemical Formula 5]

wherein E is a neutral or cationic Lewis acid;

H is a hydrogen atom;

Z is a Group 13 element; and

As are the same as or different from each other, and each independently a C6 to C20 aryl group or a C1 to C20 alkyl group, of which one or more hydrogen atoms are unsubstituted or substituted with halogen, C1 to C20 hydrocarbon, alkoxy, or phenoxy.

8. The metallocene-supported catalyst of claim 6, wherein the support is one or more selected from the group consisting of silica, silica-alumina, and silica-magnesia.

9. The metallocene-supported catalyst of claim 6, wherein a weight ratio of the transition metal of the metallocene compound to the support is 1:

10 to 1;

1,000.

10. The metallocene-supported catalyst of claim 6, wherein a weight ratio of the cocatalyst compound to the support is 1:

1 to 1;

100.

11. A method of preparing a polyolefin, the method comprising polymerizing olefinic monomers in the presence of the metallocene-supported catalyst of claim 6.

12. The method of claim 11, wherein the polymerization is performed by a solution polymerization process, a slurry process, or a gas phase process.

13. The method of claim 11, wherein the olefinic monomer comprises one or more monomers selected from the group consisting of ethylene, propylene, 1-butene, 1-hexene, 1-octene, 1-pentene, 4-methyl-1-pentene, 1-heptene, 1-decene, 1-undecene, 1-dodecene, norbornene, ethylidenenorbornene, styrene, alpha-methylstyrene, and 3-chloromethylstyrene.

14. A polyolefin prepared by the preparation method of claim 11.

15. The polyolefin of claim 14, wherein a weight average molecular weight is 200,000 g/mol to 900,000 g/mol.