Method for preparing hybrid supported metallocene catalyst

Patent metadata

Field	Value
Publication number	US-9902789-B2
Application number	US-201415029196-A
Country	US
Kind code	B2
Filing date	Oct 15, 2014
Priority date	Oct 18, 2013
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

The present invention relates to a method for preparing a hybrid supported metallocene catalyst. More specifically, the present invention relates to a method for preparing a hybrid supported metallocene catalyst by using two or more different types of metallocene compounds. One type of the metallocene compounds shows a high polymerization activity even when it is supported, and thus the catalyst has an excellent activity and can be utilized in the polymerization of olefinic polymers having ultra-high molecular weight. Based on the hybrid supported metallocene catalyst obtained according to the preparation method of the present invention, an olefinic polymer having high molecular weight and the desired physical property can be prepared.

First claim

What is claimed is:

1. A method for preparing a hybrid supported metallocene catalyst which comprises the steps of:
supporting a first cocatalyst compound on a support;
supporting at least one first metallocene compound selected from the group consisting of

and at least one second metallocene compound selected from the group consisting of [ t Bu-O—(CH 2 ) 6 —C 5 H 4 ] 2 ZrCl 2 and [ t Bu-O—(CH 2 ) 6 )(CH 3 )Si(C 5 (CH 3 ) 4 ]( t Bu-N)TiCl 2 ; and
supporting a second cocatalyst compound on the support on which the first cocatalyst compound, the first metallocene compound and the second metallocene compound have been supported, wherein the first cocatalyst compound is represented by the following Chemical Formula 6 and the second cocatalyst compound is represented by the following Chemical Formula 7:

—[Al(R 18 )—O—] k —  [Chemical Formula 6]

in Chemical Formula 6, R 18 is independently halogen, or unsubstituted or halogen-substituted hydrocarbyl group having 1 to 20 carbon atoms; and k is an integer of 2 or more,
T + [BG 4 ] −   [Chemical Formula 7]

in Chemical Formula 7, T + is N,N-dimethylanilinium, B is boron in an oxidation state of +3, and G is pentafluorophenyl.

2. The method for preparing a hybrid supported metallocene catalyst according to claim 1 wherein the weight ratio of the transition metal in the first metallocene compound and the second metallocene compound to the support is 1:10 to 1:1,000.

3. The method for preparing a hybrid supported metallocene catalyst according to claim 1 wherein the weight ratio of the cocatalyst compound to the support is 1:1 to 1:100.

Assignees

• Lg Chemical Ltd

Inventors

• Hong Dae Sik
• Kwon Heon Yong
• Song Eun Kyoung
• Lee Yong Ho
• Cho Kyung Jin
• Lee Ki Soo
• Choi Yi Young

Classifications

• C08F4/65925

  two cyclopentadienyl rings being mutually non-bridged · CPC title

• C08F210/16 Primary

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C07F17/00 Primary

  Metallocenes · CPC title

• C08F4/6592

  containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring · CPC title

• C08F4/65927

  two cyclopentadienyl rings being mutually bridged · CPC title