Lg Chem, Ltd

Other

Electronics and Telecommunications Research Institute

Samyang Corporation

Sun Mi Kim

Yi Young Choi

Bog Ki Hong

Soon Ho Sun

Si Jung Lee

Ki Soo Lee

Jin Young Park

Cheolhwan Jeong

Sung Min Lee

Sunghyun Park

Eun Kyoung Song

Jong Ho Kim

Hyunsup Lee

Kyung Jin Cho

Sol Cho

Chang Woan Han

Myunghan Lee

Joong Soo Kim

Yeonsoo Kim

Jinseok Lee

Ue Ryung Seo

Sug Bae Kim

Jin Soo Nam

Hong Ki Ha

Yong Ho Lee

Jae Hyun Kim

Heon Yong Kwon

Dae Sik Hong

Myung Han Lee

Sung Hyun Park

Se Young Kim

Daesik Hong

Yu Taek Sung

Young Suk You

Hyuck Ju Kwon

Ye Jin Lee

Seung Mi Lee

Kyung Moo Shin

Hyojoon Lee

Dong Hoon Jeong

Sung Hwan Cho

Chang Hwan Jang

Jisoo Song

Chul Soo Kim

Ki Heon Song

Soung Hun Yoo

Yo Han Bae

Hyeong Il Lee

Whan Gi Kim

Kyung Chul Shin

Kiju Um

Dong Wan Seo

A polyethylene according to the present disclosure maintains a stable crystal structure at a high temperature and ensures excellent uniformity in chlorine distribution, thereby preparing a chlorinated polyethylene having excellent chlorination productivity and thermal stability by reacting with chlorine, and may also prepare a PVC compound with improved impact strength by including the chlorinated polyethylene.

Polyethylene and chlorinated polyethylene thereof

The present disclosure relates to a polyethylene having high degree of crosslinking and a crosslinked polyethylene pipe including the same. The polyethylene according to the present disclosure has a high content of ultra-high molecular weight, and thus a crosslinking rate is improved, and thus a sufficient degree of crosslinking is exhibited even when the crosslinking time is shortened, thereby exhibiting excellent strength and pressure resistance characteristics.

Polyethylene having high degree of crosslinking and crosslinked polyethylene pipe comprising the same

The present disclosure relates to a polyethylene having high pressure resistance and a crosslinked polyethylene pipe including the same. The polyethylene according to the present disclosure has high melt index and density and exhibits a sufficient degree of crosslinking, thereby exhibiting excellent strength and pressure resistance characteristics.

Polyethylene having high pressure resistance and crosslinked polyethylene pipe comprising the same

There are provided a polyethylene capable of improving tensile strength while maintaining excellent processability and Mooney viscosity characteristics when preparing a chlorinated polyethylene compound by implementing a molecular structure having a low content of low molecular weight and a high content of high molecular weight, and a chlorinated polyethylene prepared using the same.

Polyethylene and its chlorinated polyethylene

Provided are a hybrid supported catalyst which includes two or more kinds of transition metal compounds having the following Chemical Formulas 1 and 2, thereby preparing a polyolefin, particularly, a high-density polyethylene having a molecular structure which is optimized to improve tensile strength of a chlorinated polyolefin compound, and a method of preparing a polyolefin using the same:

Hybrid supported catalyst and method of preparing polyolefin using the same

The polyethylene according to the present disclosure has a short relaxation time and a uniform particle size, thereby preparing a chlorinated polyethylene excellent in chlorination productivity and glass transition temperature by reacting with chlorine. And, a PVC composition with improved impact strength may also be prepared by including the same.

The polyethylene according to the present disclosure reacts with chlorine to prepare a chlorinated polyethylene having excellent processability during extrusion with a high tensile strength by implementing a molecular structure having a high content of medium molecular weight, and may also prepare a CPE compound including the chlorinated polyethylene.

The polyethylene according to the present disclosure has a molecular structure having a narrow particle distribution and a low content of ultra-high molecular weight, so that a chlorinated polyethylene having excellent chlorination productivity and thermal stability may be prepared by reacting the polyethylene with chlorine. And, a PVC composition including the same with improved impact strength may also be prepared.

The present disclosure relates to a method for preparing a polyolefin using a supported hybrid metallocene catalyst. According to the present disclosure, a polyolefin having a narrow molecular weight distribution can be prepared very effectively by introducing a cocatalyst in an optimum content in the presence of a supported hybrid metallocene catalyst containing two or more metallocene compounds having a specific chemical structure. The polyolefin prepared according to the present disclosure exhibits excellent uniformity in chlorine distribution in polyolefin during chlorination, thereby significantly improving elongation of the chlorinated polyolefin, compatibility with PVC and impact reinforcing performance. Thus, it exhibits excellent chemical resistance, weather resistance, flame retardancy, processability and impact strength reinforcing effect, and can be suitably applied as an impact reinforcing agent for PVC pipes and window profiles.

Method for preparing polyolefin using supported hybrid metallocene catalyst

The present disclosure relates to a polyethylene resin composition exhibiting excellent processability and bubble stability, which can provide a film or fiber having excellent physical properties through various processes. The polyethylene resin composition includes a first polyethylene resin having a density of 0.950 g/cmto 0.960 g/cm, a weight average molecular weight of 80000 g/mol to 100000 g/mol and a molecular weight distribution of 3.3 to 4.0; and a second polyethylene resin having a density of 0.950 g/cmto 0.960 g/cm, a weight average molecular weight of 500000 g/mol to 600000 g/mol and a molecular weight distribution of 1.3 to 2.0.

Polyethylene resin composition

The present invention relates to a hybrid supported metallocene catalyst and a polyolefin preparation method using the same. Using the hybrid supported metallocene catalyst can not only significantly reduce the amount of wax produced when polymerizing olefin monomers, but can also enhance the stress cracking resistance of the polyolefin that is prepared.

Hybrid supported metallocene catalyst and polyolefin preparation method using same

Provided is an ethylene/alpha-olefin copolymer having excellent environmental stress crack resistance.

Ethylene/alpha-olefin copolymer having excellent environmental stress crack resistance

The present invention relates to polyethylene resin having excellent impact strength, and more specifically, to polyethylene resin exhibiting excellent impact strength and flexural strength, when prepared into a molded product.

Polyethylene resin having excellent impact strength

The ethylene/1-hexene copolymer according to the present invention has excellent processability and mechanical properties, and thus can be applied to various fields such as food containers.

Ethylene/1-hexene copolymer having excellent processability and mechanical properties

The present disclosure relates to an ethylene/alpha-olefin copolymer having excellent processibility. The ethylene/alpha-olefin copolymer according to the present disclosure is excellent in both mechanical properties and processibility.

Ethylene/alpha-olefin copolymer having excellent processibility

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Daejeon, South Korea

Sun Mi Kim