Metallocene compounds, catalyst compositions comprising the same, and method for preparing olefin polymers using the same

Patent metadata

Field	Value
Publication number	US-9828403-B2
Application number	US-201515037483-A
Country	US
Kind code	B2
Filing date	Aug 12, 2015
Priority date	Aug 12, 2014
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

The present invention relates to a transition metal compound that may exhibit high activity in olefin polymerization, and easily control the properties of synthesized olefin polymer such as a chemical structure, molecular weight distribution, a mechanical property, and the like, a catalyst composition comprising the same, and a method for olefin polymerization using the catalyst composition.

First claim

The invention claimed is:

1. A transition metal compound represented by the following Chemical Formula 1:

in the Chemical Formula 1,
R 1 to R 12 are independently selected from the group consisting of hydrogen, a C1-20 alkyl group, a C2-20 alkenyl group, a C1-20 alkylsilyl group, a C1-20 silylalkyl group, a C1-20 alkoxysilyl group, a C1-20 ether group, a C1-20 silylether group, a C1-20 alkoxy group, a C6-20 aryl group, a C7-20 alkylaryl group and a C7-20 arylalkyl group, or
two or more neighboring groups of R 1 to R 12 are optionally connected with each other to form a substituted or unsubstituted aliphatic or aromatic ring,
Q 1 and Q 2 are independently hydrogen, halogen, a C1-20 alkyl group, a C2-20 alkenyl group, a C1-20 alkoxy group, a C6-20 aryl group, a C2-20 alkoxyalkyl group, a C3-20 heterocycloalkyl group, a C5-20 heteroaryl group, 1-tert-butoxyhexyl, or pivalate,
M is Group 4 transition metal,
Xs are independently halogen, a C1-20 alkyl group, a C2-20 alkenyl group, a C6-20 aryl group, a nitro group, an amido group, a C1-20 alkylsilyl group, a C1-20 alkoxy group or a C1-20 sulfonate group, and
n is an integer of 1 to 10.

2. The transition metal compound according to claim 1 , wherein M is selected from the group consisting of Ti, Zr and Hf.

3. The transition metal compound according to claim 1 , wherein R 1 is a C1-20 alkyl group, a C1-20 alkoxyl group, or a C6-20 aryl group.

4. The transition metal compound according to claim 1 , wherein R 8 is a C1-20 alkyl group, a C1-20 alkoxy group, a C1-20 alkylsilyl group, a C1-20 silylalkyl group, a C6-20 aryl group, or a C7-20 alkylaryl group.

5. The transition metal compound according to claim 1 , wherein Q 1 and Q 2 are independently a C1-20 alkyl group, a C1-20 alkenyl group, a C1-20 alkoxy group, or a C6-20 aryl group.

6. A catalyst composition comprising the transition metal compound represented by the Chemical Formula 1 according to claim 1 ; and a cocatalyst comprising at least one selected from the group consisting of the following Chemical Formulae 2 to 4:
[L-H] + [Z(E) 4 ] − or [L] + [Z(E) 4 ] −   [Chemical Formula 2]

in the Chemical Formula 2,
L is neutral or cationic Lewis base,
[L-H] + or [L] + is Bronsted acid,
H is a hydrogen atom,
Z is Group 13 element,
Es are independently halogen with hydrogen valence number of 1 or more, a C1-20 hydrocarbyl, a C6-20 aryl group or a C1-20 alkyl group unsubstituted or substituted with alkoxy or phenoxy,
D(R 13 ) 3   [Chemical Formula 3]

in the Chemical Formula 3,
D is aluminum or boron,
R 13 s are independently halogen; a C1-20 hydrocarbyl group; or a C1-20 hydrocarbyl group substituted with halogen,

in the Chemical Formula 4,
R 14 , R 15 and R 16 are independently hydrogen; halogen; a C1-20 hydrocarbyl group; or a C1-20 hydrocarbyl group substituted with halogen, and a is an integer of 2 or more.

7. The catalyst composition according to claim 6 , further comprising a solvent.

8. The catalyst composition according to claim 6 , wherein the transition metal compound and the cocatalyst are supported in a carrier.

9. A method for preparing an olefin polymer, comprising a step of polymerizing olefin monomers in the presence of the catalyst composition according to claim 6 .

10. The method according to claim 9 , wherein the olefin monomer includes at least one selected from the group consisting of ethylene, propylene, 1-butene, 1-penten, 4-methyl-1-penten, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-undecene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-eicosene, norbornene, norbornadiene, ethylidene norbornene, phenyl norbornene, vinyl norbornene, dicylcopentadiene, 1,4-butadiene, 1,5-pentadiene, 1,6-hexadiene, styrene, alpha-methylstyrene, divinylbenzene and 3-chloromethylstyrene.

Assignees

• Lg Chemical Ltd

Inventors

• Lee Sung Min
• Lee Ki Soo
• Kwon Heon Yong
• Hong Dae Sik
• Kim Se Young
• Lee Yong Ho
• Shin Eun Young
• Park Sung Ho
• Cho Min Seok
• Cho Kyung Jin
• Park Jin Young

Classifications

• C07F17/00 Primary

  Metallocenes · CPC title

• C08F10/00 Primary

  Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title

• C08F110/02

  Ethene · CPC title

• C08F4/65927

  two cyclopentadienyl rings being mutually bridged · CPC title

• C08F4/65912

  in combination with an organoaluminium compound · CPC title