Lg Chem, Ltd

Jae Youp Cheong

Sang Jin Jeon

Hee Kwang Park

Byung Seok Kim

Hye Kyung Lee

Kyung Seop Noh

Sang Hoon Lee

Sang Eun An

Ki Soo Lee

Heon Yong Kwon

Daesik Hong

Sangjin Jeon

Ji Ho Choi

Ra Yun Choi

In Sun Lee

Jong Woo Park

The present invention relates to a supported catalyst comprising a novel metallocene compound having excellent polymerization activity, and a method for producing polypropylene comprising polymerizing propylene in the presence of the catalyst. The supported metallocene-catalyst of the present invention can produce a polypropylene having a relatively narrow molecular weight distribution and a SPAN value.

Metallocene-supported catalyst and method for preparing polypropylene using the same

A method of preparing a high-purity metallocene catalyst capable of providing various selectivities and high activities for polyolefin copolymers, wherein a metallocene compound is formed by reacting a ligand compound with a zirconium compound, and then lithium chloride as a reaction by-product included in the metallocene compound is prepared in a form of a complex compound and effectively removed in a subsequent step of extracting the catalyst, thereby effectively preparing the high-purity metallocene catalyst, is provided.

Method of preparing metallocene catalyst for polyolefin preparation

The present invention relates to a supported metallocene catalyst including a novel single metallocene compound having excellent polymerization activity, and a process for producing a polypropylene having excellent processability and broad molecular weight distribution using the same.

Metallocene supported catalyst and method for preparing polypropylene using the same

The present invention provides a method for preparing an olefin polymer which can exhibit excellent isotacticity in a high yield and thus is suitable for use in reinforcing a long fiber, and a long fiber comprising an olefin polymer produced according to the above preparation method. In the preparation method, there can be provided an olefin polymer having excellent isotacticity in a high yield can be obtained by using a supported catalyst in which a transition metal compound having a specific structure is supported on a carrier together with two kinds of cocatalysts. In particular, the supported catalyst can exhibit high activity, excellent process stability and high hydrogen reactivity, thereby providing an olefin polymer having a high flow rate with a regular and excellent morphology. Such olefin polymer exhibits high processability while having excellent mechanical properties such as a tensile strength and a flexural strength, and thus are very useful as long fiber reinforced resins. They are used as long fiber reinforced resins and have an advantage in that total volatile organic compounds (TVOC) are significantly low as compared with those of general-purpose long fiber reinforced resins.

Method for preparing long fiber-reinforcing olefin polymer and long fiber

The present invention relates to a metallocene compound having novel structure which can provide various selectivity and activity to polyolefin copolymers, a preparation method thereof, and a preparation method of polyolefin using the metallocene compound.

Metallocene catalyst for preparing a high molecular weight polyolefin and a preparation method thereof

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Daejeon, South Korea

Jae Youp Cheong