Lg Chem, Ltd

Byung Seok Kim

Hye Kyung Lee

Sang Jin Jeon

Seok Hwan Kim

Insun Lee

Won Hee Kim

Minyoung Kang

Kyung Seop Noh

Hee Kwang Park

Seyoung Kim

Sangjin Jeon

Donghyeon Gwon

Daesik Hong

Heekwang Park

Jae Youp Cheong

Ra Yun Choi

Jung Won Lee

Ji Ho Choi

Sang Eun An

Churl Young Park

In Sun Lee

Sang Hoon Lee

Eun Kyoung Song

Seong Min Chae

Ye Jin Lee

Jinyoung Lee

Jihwa Ye

Jeongkyu Lee

Jinyoung Kwak

SangHoon Lee

Eunyoung Shin

Sangeun An

Jong Woo Park

Seok Bin Hong

Chaeeun Lee

Yoonchul Jung

This invention relates to polyolefin. More specifically, this invention relates to polyolefin that may exhibit improved mechanical properties such as excellent drop impact strength.

Polyolefin

Provided are a hybrid supported metallocene catalyst comprising one or more first metallocene compounds selected from compounds represented by the following Chemical Formula 1; one or more second metallocene compounds selected from compounds represented by the following Chemical Formula 2, and showing high activity in propylene polymerization and being usefully applied to the preparation of a polypropylene having high melt strength by introducing long chain branches into the polypropylene molecule, and a method of preparing a polypropylene using the same

Hybrid supported metallocene catalyst and method of preparing polypropylene using the same

Provided are a novel transition metal compound of the following Chemical Formula 1 that exhibits excellent catalytic activity, allows formation of a macromonomer which is a polymer in which a double bond is formed at the end of a chain, and improves a melt strength characteristic when used in polymerizing polypropylene, and a method of preparing a polypropylene using the same. wherein A, M, Rto R, Xand X, Yand Yand m are described herein.

Transition metal compound and method of preparing polypropylene using the same

The present disclosure relates to a novel transition metal compound represented by the following Chemical Formula 1, which exhibits excellent catalytic activity for propylene polymerization, and is useful in the preparation of a polypropylene having a narrow molecular weight distribution and a high melting point, a catalyst composition including the same, and a method for preparing a polypropylene using the same,

Transition metal compound and catalyst composition comprising the same

The present disclosure relates to a novel transition metal compound of the following Chemical Formula 1, which exhibits high hydrogen reactivity with excellent catalytic activity for propylene polymerization, and is useful in the preparation of a polypropylene having a narrow molecular weight distribution and a low melting point, a catalyst composition including the same, and a method for preparing a polypropylene using the same,

Transition metal compound, catalyst composition and method for preparing polypropylene using the same

The present disclosure relates to a propylene-ethylene random copolymer for high transparency injection that has a low total volatile organic compound emission (TVOC), excellent processability, and maximizing ethylene content.

Propylene-ethylene random copolymer

Provided are a method of preparing a supported metallocene catalyst, and a method of preparing polypropylene using the catalyst prepared thereby. According to the present invention, provided is a supported metallocene catalyst capable of preparing an isotactic polypropylene polymer having a low xylene soluble content while having excellent catalytic activity.

Method of preparing supported metallocene catalyst and method of preparing polypropylene using catalyst prepared thereby

The present disclosure provides a novel transition metal compound which exhibits excellent catalytic activity and is useful in the preparation of a polypropylene having high impact strength, and a method for preparing a homo polypropylene using the same.

Transition metal compound and method for preparing polypropylene using the same

The present invention relates to homopolypropylene resin for non-woven fabric, and according to the present invention, by optimizing tacticity to 80% to 90%, having narrow molecular weight distribution of 2.4 or less, and fulfilling melt index of 20 g/10 min to 30 g/10 min, melting point of 145&#xb0; C. or less, and residual stress rate of 0.05% or less, thereby optimizing modulus, high strength non-woven fabric that is softer than the existing products, and is not easily torn due to high tenacity, can be prepared.

Homopolypropylene resin for non-woven fabric and method for preparing 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

A catalyst composition and a method for preparing an olefin polymer by using the same are provided herein. In some embodiments, a catalyst composition includes a transition metal compound having a compound (A) represented by Chemical Formula 1 and a compound (B) represented by Chemical Formula 2 present in a molar ratio of 1.6:1 to 18. The catalyst composition has high activity in an olefin polymerization reaction and can contribute to a reduction of catalyst cost. The catalyst composition aides in high copolymerizability of olefin monomers, and the produced olefin polymers can exhibit excellent processability and long-term physical properties, suitable for a pipe.

Catalyst composition and method for preparing olefin polymer using same

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 transition metal compound, a catalyst composition comprising the same, and a method for producing an olefin polymer using the catalyst composition, the transition metal compound being capable of exhibiting high activity in olefin polymerization reaction, and also being capable of easily controlling the physical properties of an olefin polymer. When the transition metal compound is used, it is possible to provide an olefin polymer having an excellent energy-saving effect at the time of processing or molding.

Transition metal compound, catalyst composition comprising same, and method for producing olefin polymer using same

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.

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Daejeon, South Korea

Byung Seok Kim