Lg Chem, Ltd

Heon Yong Kwon

Ki Soo Lee

Dae Sik Hong

Yong Ho Lee

Eun Kyoung Song

Hyun Jee Kwon

Eun Young Shin

Sung Min Lee

Yi Young Choi

Se Young Kim

Yu Taek Sung

Sung Ho Park

Kyung Jin Cho

Oh Joo Kwon

Dong Hoon Jeong

Jin Young Lee

Min Seok Cho

Sol Cho

Sung Hyun Park

Myung Han Lee

Young Suk You

Seung Mi Lee

Hyuck Ju Kwon

Soon Ho Sun

Sangjin Jeon

Kyoung-Chan Lim

Hyeon-Gook Kim

Ki Heon Song

Ye Hoon Im

Jin Young Park

Dae Hwan Kim

Eun Ji Shin

Bun Yeoul Lee

Seul Ki Im

Sun Mi Kim

Kyung Seop Noh

Ki-Soo Lee

Hyunsup Lee

Seong Min Chae

Heekwang Park

Daesik Hong

Seok Hwan Kim

Hye Kyung Lee

Joong Soo Kim

Hyo Sun Lee

Young Whan Park

Yonggyu Han

Man-Seong Jeon

Young Chul Won

Jae Youp Cheong

Chae Gyu Lee

Yu-Taek Sung

Ha Na Park

Seung Ki Park

Byoungho Jeon

Baekun Shin

Soo Yeon Lee

You Young Jung

Chang-Hwan Jang

Provided are a novel metallocene-supported catalyst and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure may be used in the preparation of polyolefins, it may have excellent activity and excellent reactivity with comonomers, and it may prepare olefinic polymers having a high molecular weight and a low molecular weight.

Metallocene-supported catalyst and method of preparing polyolefin using the same

The present invention provides a polypropylene resin pellet that is environment friendly, has excellent workability, and enables preparation of fine denier fiber, and a method for preparing the same.

Polypropylene resin pellet and method for preparing the same

The present disclosure provides an olefin polymer having excellent film processability and physical properties, and a preparation method of the same.

Olefin polymer and preparation method thereof

The present invention relates to a supported catalyst comprising a novel metallocene compound having excellent polymerization activity, and a method for producing polypropylene comprising polymerizing propylene in the presence of the catalyst. The supported metallocene-catalyst of the present invention can produce a polypropylene having a relatively narrow molecular weight distribution and a SPAN value.

Metallocene-supported catalyst and method for preparing polypropylene using the same

The present application relates to a method for quantitative analysis of a polymer structure. Specifically, the method may be carried out through steps of measuring rheological properties and/or molecular weight distribution of the arbitrarily selected polymer, setting a random value for the selected polymer and then predicting the rheological property and/or the molecular weight distribution of the polymer from the random value, and comparing the measured value with the predicted value to determine the value of the structural parameter of the polymer.

Method for quantitative analysis of polymer structure and analyzer

The present invention provides a hybrid supported catalyst capable of easily preparing an olefin polymer capable of having improved melt strength even while having appropriate molecular weight distribution, and thus having improved bubble stability and exhibiting excellent blown film processability, and a method for preparing an olefin polymer using the same.

Hybrid supported catalyst

The present invention provides a method for preparing a polyolefin having a broad molecular weight distribution. More specifically, the present invention provides a method for preparing a polyolefin having a broad molecular weight distribution and an ultra-high molecular weight in which an organometallic complex containing a specific Ti&#x2014;Al complex structure is used as a molecular weight controller (i.e., molecular weight enhance) in the polymerization of an olefin monomer, thereby enabling both solution polymerization and slurry polymerization, particularly enabling the molecular weight distribution to be more readily and effectively controlled.

Method for preparing polyolefin

The present disclosure provides a supported hybrid catalyst which facilitates the preparation of polyolefins having improved bubble stability and exhibiting excellent processability for a blown film while maintaining high transparent haze and improved melt strength, and a method for preparing the same.

Supported hybrid catalyst

The present invention relates to an olefin polymer and a preparation method thereof. The olefin polymer exhibits excellent mechanical strength and high processability, and thus is expected to be utilized as a material for various products. Particularly, the olefin polymer can be stably produced into films by a melt-blowing process and thus is expected to be usefully used as a material for products prepared by a melt-blowing process.

The present invention provides an olefin polymer in which LCB (long chain branch) is introduced into mLLDPE (metallocene linear low-density polyethylene) to control the storage modulus, whereby the olefin polymer has excellent bubble stability and processing load characteristics and exhibits excellent processability during preparation of a film, and further has excellent mechanical properties and transparency.

Olefin polymer and method for preparing same

The present invention relates to a supported hybrid catalyst and a method for preparing olefin polymer using the same. Using the supported hybrid catalyst, olefin polymer that maintains excellent mechanical strength of olefin polymer polymerized with the existing metallocene catalyst, but exhibits remarkably improved processibility compared to the existing olefin polymer, can be provided.

Supported hybrid catalyst and method for preparing olefin polymer using the same

The present invention provides a metallocene supported catalyst that can prepare a polyolefin having excellent transparency even when processed into a film, as well as excellent processibility and mechanical properties, with high catalytic activity, and a method for preparing a polyolefin using the same.

Metallocene supported catalyst and method for preparing polyolefin using the same

The present disclosure provides a method for preparing a supported hybrid metallocene catalyst which can be used to prepare a polyolefin, a supported hybrid metallocene catalyst prepared by using the method, and a method for preparing a polyolefin using the supported hybrid metallocene catalyst.

Method for preparing supported hybrid metallocene catalyst, and supported hybrid metallocene catalyst using the same

The low density polyethylene copolymer according to the present invention is characterized in that as LCB (Long Chain Branch) is introduced into LLDPE, the melt strength is remarkably high even without blending with LDPE, and thus it can be advantageously applied to blown film processing and the like.

Low density polyethylene copolymer having excellent film processability and transparency

Growing community of inventors

Daejeon, South Korea

Heon Yong Kwon