Lg Chem, Ltd

Yi Young Choi

Seung Min Lee

Ki Soo Lee

Bog Ki Hong

Sun Mi Kim

Soon Ho Sun

Eun Kyoung Song

Sung Min Lee

Kyung Jin Cho

Yong Ho Lee

Dae Sik Hong

Heon Yong Kwon

Hyuck Ju Kwon

Si Jung Lee

Jin Young Park

Sol Cho

Chang Woan Han

Sunghyun Park

Hyunsup Lee

Cheolhwan Jeong

Myung Han Lee

Se Young Kim

Sung Hyun Park

Young Suk You

Myunghan Lee

Min Seok Cho

Yu Taek Sung

Joong Soo Kim

Seung Mi Lee

Ye Jin Lee

Yeonsoo Kim

Hyun Sup Lee

Hyojoon Lee

Chang Hwan Jang

Jinseok Lee

Woo Ri Kim

Nak-Kyu Song

Seul Ki Im

Sung Joon Oh

Hyun Jee Kwon

Daesik Hong

Jeong Kyu Lee

In Young Song

Seyoung Kim

Jinyoung Lee

Oh Joo Kwon

Daehwan Kim

Dong Hoon Jeong

Joongsoo Kim

Jinyoung Kwak

In Gyu Park

Pum Suk Park

Jisoo Song

Ki Heon Song

Chang Kwon Chung

Soung Hun Yoo

Jongsang Park

Ue Ryung Seo

Jong Young Bae

Hyeong Il Lee

Jong Yong Bae

Yo Han Bae

Si Yong Kim

Jong Young Bea

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 crosslinked polyethylene pipe having excellent physical properties. The crosslinked polyethylene pipe according to the present disclosure has optimized the degree of crosslinking and storage modulus by finding out the optimum physical property range between the degree of crosslinking and the storage modulus which have a mutual trade-off relationship, whereby the crosslinked polyethylene pipe according to the present disclosure has excellent long-term durability and short-term pressure resistance, and thus can be applied to various fields requiring these physical properties.

Crosslinked polyethylene pipe having excellent physical properties

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

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 present invention relates to a method for evaluating an injection physical property of a plastic resin, and a polyethylene resin suitable for an injection molding process and, more particularly, to a novel method for evaluating an injection physical property of a plastic resin, which, when a particular plastic resin is processed by an injection process, can accurately derive injection suitability of the plastic resin and injection pressure in the injection process through a physical property value measured by using a resin specimen, and a polyethylene resin suitable for injection molding.

Assessment method for injection molding property of plastic form

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 invention has narrow particle size distribution, and can minimize a change in the crystal structure, and thus, it can be reacted with chlorine to prepare chlorinated polyethylene having excellent chlorination productivity and thermal stability.

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

Provided is an ethylene/1-butene copolymer having excellent processability and stress cracking resistance. The ethylene/1-butene copolymer according to the present invention may be applied to a high-pressure resistant heating pipe, a PE-RT pipe, a large diameter pipe, etc.

Ethylene/1-butene copolymer having excellent processability

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 application relates to a method for selecting an injection-molded article and a method for manufacturing an injection-molded article. An injection-molded article having excellent crack stability can be produced using the material selected using the described selection method without having to manufacture test articles through injection molding.

Method for selecting material of injection-molded article and method for manufacturing injection-molded article

The present invention provides polyolefin resin composition exhibiting excellent long term durability as well as improved properties, and an article prepared using the same.

Polyolefin resin composition and stretch film using the same

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Daejeon, South Korea

Yi Young Choi