Sk Innovation Co., Ltd.

Sabic Sk Nexlene Company Pte. Ltd.

Sk Global Chemical Co., Ltd.

Sk Energy Co., Ltd.

Dongcheol Shin

Jongsok Hahn

Myungahn Ok

Hoseong Lee

Jisu Jeong

Choonsik Shim

Yeonock Oh

Miji Kim

Dae Ho Shin

Daeho Shin

Choon Sik Shim

Sungseok Chae

Minho Jeon

Seungbum Kwon

Sang Bae Cheong

Hyosun Lee

Chunji Wu

Byoungtak Yim

Youngwook Kim

Minji Kim

Dongkyu Park

The present invention provides a transition metal compound, a catalyst composition comprising same, and a method for producing an olefin polymer using the catalyst composition. A transition metal compound having a specific functional group at a specific position, according to the present invention, has high solubility and catalytic activity, and thus a method for producing an olefin polymer by using said transition metal compound can produce an olefin polymer having excellent physical properties through a simple process.

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

Provided is a novel tetraarylborate compound, a catalyst composition including the same, and a method for preparing an ethylene homopolymer or an ethylene-α-olefin copolymer using the same. Specifically, the teraarylborate compound having excellent thermal stability, able to be completely dissolved in an aliphatic hydrocarbon-based solvent to facilitate the operation of commercial processes and effectively inducing the activation of a single active site catalyst, may be used as a catalyst activator to provide an ethylene-based copolymer selected from a high molecular weight ethylene homopolymer and ethylene-α-olefin copolymer having high catalyst activity.

Tetraarylborate compound, catalyst composition comprising same, and method for preparing ethylene homopolymers or copolymers of ethylene and a-olefin by using same

Provided is a homogeneous catalytic system for use in preparing an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin, and more particularly a Group 4 transition metal compound in which a cyclopentadienyl derivative 3,4-positions of which are substituted with alkyls and an electron-donating substituent are crosslinked around a Group 4 transition metal. Also provided is a method of preparing an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin, having high molecular weight, under high-temperature solution polymerization conditions using the catalytic system including such a transition metal compound and a co-catalyst composed of an aluminum compound, a boron compound or a mixture thereof. The catalyst according to present invention has high thermal stability and enables the incorporation of &#x3b1;-olefin, and is thus effective in preparing an ethylene homopolymer or a copolymer of ethylene and &#x3b1;-olefin, having various properties, in industrial polymerization processes.

Advanced transition metal catalytic systems in terms of comonomer incorporations and methods for preparing ethylene homopolymers or copolymers of ethylene and alpha-olefins using the same

Provided are transition metal catalytic systems for preparing ethylene homopolymers or copolymers of ethylene with &#x3b1;-olefins. More specifically, provided are Group 4 transition metal catalysts, which is characterized in that the Group 4 transition metal catalyst comprises around the Group 4 transition metal a cyclopentadiene derivative, and at least one naphthoxide ligand(s) having aryl substituent(s) that function(s) as an electron donor and serve(s) to stabilize the catalyst system by surrounding an oxygen atom that links the ligand to the transition metal at 2-position, and there is no cross-linkage between the ligands; catalytic systems comprising such transition metal catalyst and aluminoxane cocatalyst or boron compound cocatalyst; and processes for preparing ethylene homopolymers or copolymers of ethylene with &#x3b1;-olefins by using the same.

Transition metal catalytic systems and methods for preparing ethylene homopolymers or copolymers of ethylene and &#x3b1;-olefins using the same

Provided are transition metal catalytic systems for preparing ethylene homopolymers or copolymers of ethylene with &#x3b1;-olefins. More specifically, provided are Group 4 transition metal catalysts, which is characterized in that the catalyst comprises around the Group 4 transition metal a cyclopentadiene derivative, and at least one aryloxide ligand(s) having a fluorenyl group or a derivative thereof (which is ready to be substituted at 9-position) that functions as an electron donor and serves to stabilize the catalytic system by surrounding an oxygen atom that links the ligand to the transition metal at ortho-position, and there is no cross-linkage between the ligands; catalytic systems comprising such transition metal catalyst and aluminoxane cocatalyst or boron compound cocatalyst; and processes for preparing ethylene homopolymers or copolymers of ethylene with &#x3b1;-olefins by using the same.

Process for preparing ethylene homopolymers or copolymers of ethylene with &#x3b1;-olefin by using the transition metal compound

The present invention relates to a method for the production of an ethylene/propylene/diene copolymer by means of solution polymerization, and more specifically one for a copolymer whose main components are ethylene, propylene and diene monomers using a catalyst of a transition metal coordination compound; the constituent components and characteristics of the copolymer being as follows. The catalyst composition provided by the present invention, which is used to produce a copolymer of which (a) the ethylene content is from 30 wt. % to 80 wt. %, (b) the propylene content is from 19.9% to 60 wt. % and (c) the diene content is from more than 0 wt. % to 15 wt. %, comprises a catalyst system using an activating agent of a compound of aluminum or boron, or aluminoxane together with a transition metal catalyst comprising at least one anionic ligand having an aryloxy group substituted with an aryl derivative in the ortho position and a cyclopentadiene derivative, and provides a highly active polymerization method with outstanding reactivity with respect to ethylene, propylene and diene compounds.

Ethylene-propylene-diene copolymer production method

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Daejeon, South Korea

Dongcheol Shin