Lg Chem, Ltd

Jong-Joo Ha

Eun-Jung Lee

Sangwoo Lee

Choong-Hoon Lee

Don-Ho Kum

Dong-Kyu Park

Byung-Kwon Lim

Seung-Whan Jung

Jung-A Lee

Yang-Kee Kim

Jong-Chan Lee

Seong-Jin Kim

Ki-Soo Lee

Ki-Su Ro

Cheon-Il Park

Beom-Doo Seo

Kyung-Seok Min

Kyung-Seop Noh

Sung-Soo Park

Won-Hee Kim

Sang-Jin Jeon

Hoon Chae

Eun-jung Lee

The present invention relates to an olefin-based polymer which exhibits superior processability and superior adhesive properties and therefore is desirably applicable to a hot-melt adhesive (HMA) or the like, and a preparation method thereof. The olefin-based polymer has a molecular weight distribution (Mw/Mn, PDI) of 2&#x2dc;3, and a density of 0.85 to 0.88 g/cm, and satisfies the relation of Tc&#x2212;Tm&#x3e;0, wherein Tc (&#xb0; C.) is a crystallization temperature and Tm (&#xb0; C.) is a melting point.

Olefin-based polymer and preparation method thereof

The present invention relates to a method of producing an elastomer. Specifically, the method of producing an elastomer according to the present invention comprises a step of polymerizing ethylene, propylene, and optionally, a diene monomer in the presence of a catalyst composition containing a transition metal compound. The method of producing an elastomer according to the present invention makes it possible to prepare a high molecular weight, ethylene-propylene or ethylene-propylene-diene, elastic copolymer at a high temperature.

Method for producing an elastomer using a transition metal catalyst

The present invention provides a polypropylene-based resin composition, which comprises of a) a polypropylene; b) an ethylene 1-octene copolymer in which rr&#x3c;1 (herein, r=k/k, r=k/k, kis a growth reaction rate constant when ethylene is added to a growth chain in which an end active site is ethylene, kis a growth reaction rate constant when octene is added to a growth chain in which an end active site is ethylene, kis a growth reaction rate constant when octene is added to a growth chain in which an end active site is octene, and kis a growth reaction rate constant when ethylene is added to a growth chain in which an end active site is octene); and c) an inorganic filling agent, and a part for vehicles manufactured by using the same.

Polypropylene-based resin composition and automobile parts using the same

The present invention relates to a preparation method of olefin polymers using a catalyst composition containing a transition metal compound. In detail, the present invention provides a preparation method of olefin polymer using a catalyst composition comprising a transition metal compound, wherein the preparation method comprises introducing a scavenger to a continuous solution polymerization reactor in a specific range of amount to give the olefin polymer with good productivity.

Process for preparation of olefin polymers

The present invention relates to an ethylene-alpha olefin copolymer comprising long chain branches (LCB), while having a narrow molecular weight distribution. The ethylene-alpha olefin copolymer can be prepared by a continuous solution polymerization process using an activated catalyst composition containing a Group 4 transition metal compound having a monocyclopentadienyl ligand, to which a quinoline amino group is introduced.

Long chain-branched ethylene-alpha olefin copolymer

The present invention relates to an ethylene &#x3b1;-olefin copolymer having a narrower molecular weight distribution, and a uniform distribution of comonomer. The ethylene &#x3b1;-olefin copolymer according to the present invention has a uniform comonomer distribution and exhibits a lower density in the same comonomer content, unlike conventional ethylene copolymers having a random or blocky comonomer distribution.

Ethylene &#x3b1;-olefin copolymer

The present invention relates to a catalyst composition and a process for preparing an olefin polymer using the same. More specifically, the present invention relates to a novel catalyst composition comprising at least two types of catalysts and a process for preparing an olefin polymer having excellent heat resistance using the same. The present invention can provide an olefin polymer having excellent activity and high heat resistance, and also can control the values of density, heat resistance and melt index (MI) of the olefin polymer.

Catalyst composition and process for preparing olefin polymer using the same

The present invention relates to a mixed metallocene catalyst composition including a first metallocene catalyst and a second metallocene catalyst, and a method for preparing a polyolefin using the catalyst composition. According to the catalyst composition and the preparation method, provided is a polyolefin having a wide molecular weight distribution and superior mechanical properties and processability.

Mixed metallocene catalyst composition and method for preparing polyolefin using the same

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Daejeon, South Korea

Jong-Joo Ha