Lg Chem, Ltd

Don-Ho Kum

Choong-Hoon Lee

Jong-Joo Ha

Eun-Jung Lee

Dong-Kyu Park

Byung-Kwon Lim

Seung-Whan Jung

Jung-A Lee

Ki-Su Ro

Yang-Kee Kim

Jong-Chan Lee

Kyung-Seok Min

Seong-Jin Kim

Beom-Doo Seo

Eun-jung Lee

Jeong-Yon Jeong

Sun-Young Park

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 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 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

Don-Ho Kum