Lg Chem, Ltd

Lg Chemical Ltd.

Lg Chemical Co., Ltd.

Joo-Eun Lee

Jae-Seung Oh

Bun-Yeoul Lee

Do-Hoon Lee

A metallocene compound represented by the following Chemical Formula 1: 

Supported metallocene catalyst and olefin polymerization using the same

The present invention relates to a metallocene compound having a functional group that facilitates the preparation of the supported metallocene catalyst for olefin polymerization and the olefin polymerization process using the same. The metallocene compounds in this invention are strongly supported on the inorganic support due to the strong chemical bond of the ligand of the metallocene compound with the silica surface, which leads to minimize leaching of the catalyst during the activation process. Therefore, the supported catalyst of this invention allows the olefin polymerization process to proceed without any fouling in the reactor with a slurry or a gas phase process, and the morphology and bulk density of the polymer produced are much better defined than those produced by conventional methods.

The present invention relates to a metallocene compound and the olefin polymerization using the same, particularly to a metallocene compound and the olefin polymerization using this compound on which supported catalysts are easily prepared by the reaction of the ligand containing &mdash;(CR ) &mdash;O&mdash;SiR Y ligand (wherein each Y, which can be the same as or different from other Y, is a hydrogen, halogen, alkoxy, aryloxy, amide, or silyloxy radical, each R , which can be the same as or different from other R , is a hydrogen radical, or an alkyl, cycloalkyl, aryl, alkenyl, alkylaryl, arylalkyl, or arylalkenyl radical having from 1 to 40 carbon atoms, each R, which can be the same as or different from other R, is an alkyl, cycloalkyl, aryl, alkenyl, alkylaryl, arylalkyl, or arylalkenyl radical having from 1 to 40 carbon atoms, a is an integral number from 1 to 40, c is 1, 2, or 3, and the sum of b and c is 3) with a support. Furthermore, the present invention relates to a supported metallocene catalyst using this metallocene compound and the olefin polymerization using the same. The metallocene compounds in this invention have superior characteristics in the preparation of supported catalyst due to the high reactivity with the support and minimal side reactions during the anchoring process. In addition, the olefin polymerization process employing the supported catalyst in this invention proceeds without fouling in the reactor, and the morphology and bulk density of the polymer produced are better than that produced by the conventional method.

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Taejeon, South Korea

Joo-Eun Lee