Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Sabic Sk Nexlene Company Pte. Ltd.

Daeho Shin

Myungahn Ok

Choonsik Shim

Jisu Jeong

Sungseok Chae

Seungbum Kwon

Hyeongtaek Ham

Hoseong Lee

Jongsok Hahn

Sun Woong Choi

Sujith Sudevan

Jaeho Lee

Minsu Jeong

Dongcheol Shin

Jieun Yoo

Ho-Seong Lee

Dong-cheol Shin

Hyunmin Jang

Hongdae Kim

Byoungmu Chang

Gwangbin Moon

Seongjun Lee

Gyungrok Kim

Mingyoo Park

Jangjae Lee

Myoungil Kim

Provided is a mixing system to mix different types of fluids more efficiently. The mixing system installed in a piping in which a first fluid is supplied includes a mixing part including a plurality of mixing members each having a front end and a rear end rotated by a predetermined angle to form a curved surface and disposed to be spaced apart from each other and a supply part supplying a second fluid to a space between adjacent mixing members.

Mixing system

Disclosed is a continuous process for manufacturing aliphatic polycarbonate by polymerizing carbon dioxide and one or more epoxide compound in the presence of catalyst, in which carbon dioxide, one or more epoxide compound, and the catalyst are continuously supplied to polymerization reactor to produce aliphatic polycarbonate, separate unreacted carbon dioxide and epoxide compound and recycle them as raw materials.

Continuous process for manufacturing aliphatic polycarbonates from carbon dioxide and epoxides

Provided are ethylene copolymers with excellent impact resistance. More specifically, provided are ethylene copolymers satisfying certain correlation between the falling dart impact strength (F) or high rate impact resistant breakage energy (E) and Vicat softening point. The ethylene copolymers with improved impact properties are applicable to film, injection, compound, sheet, roto, pipe or blow molding.

Ethylene copolymer with improved impact resistance

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 ethylene copolymers and a process for preparing the same. More specifically, provided are ethylene copolymers exhibiting excellent processibility and physical properties due to its multimodal molecular weight distribution index, through a multi-stage process by using reactors connected in series or in parallel in the presence of catalyst composition containing transition metal catalyst, and a process for preparing the same.

Ethylene copolymer and a method of preparing the same

Provided is a process for preparing copolymers of ethylene with &#x3b1;-olefin. More specifically, provided are transition metal compound being useful as catalyst for preparing those copolymers, a catalyst composition comprising the same, and a process for preparing elastic copolymers of ethylene with &#x3b1;-olefin, having the density of not more than 0.910, which can be adopted to a wide variety of applications including film, electric wires, and hot-melt adhesives. The catalyst composition is a catalytic system which comprises transition metal catalyst comprising a cyclopentadiene derivative and at least one anionic ligand(s) of aryloxy group with an aryl derivative at ortho-position, and boron or aluminum compound as an activator. Provided is a process for copolymerizing ethylene with &#x3b1;-olefin to produce copolymer having narrow molecular weight distribution and uniform density distribution with the density of not more than 0.910, with high activity and excellent reactivity on higher &#x3b1;-olefin.

Method for preparing elastomeric copolymers of ethylene and &#x3b1;-olefins

Growing community of inventors

Daejeon, South Korea

Daeho Shin