Lg Chem, Ltd

Hyojoon Lee

Seung Min Lee

Sung Min Lee

Seul Ki Im

Seyoung Kim

Jinyoung Lee

Chang Hwan Jang

Sung Ho Park

Jeongkyu Lee

Jisoo Song

Choong Hoon Lee

Yi Young Choi

Daesik Hong

Youn Sun Nam

Young Hoon Na

Yutaek Sung

Sun Mi Kim

Eun Jung Joo

Sung Joon Oh

Dae Young Shin

Seok Hwan Kim

Sol Cho

Jeongyong Lee

Sungho Choi

Juho Yoon

The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cmto 0.930 g/cmmeasured according to ASTM D1505; and has an ethylene sequence inhomogeneity (I) calculated by the following Equation 1 of 1.25 to 1.40, when analyzed by SSA (Successive Self-nucleation and Annealing):Inhomogeneity ()=  [Equation 1]

Polyolefin

The present invention relates to polyolefin. More specifically, the present invention relate s to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency and satisfying one of the following 1)˜4):

Provided are an ethylene-vinyl acetate copolymer having a high degree of crosslinking by controlling a temperature difference in an autoclave reactor and an input ratio of an initiator during polymerization, even though a reduced amount of a crosslinking agent is used, and a preparation method thereof.

Ethylene-vinyl acetate copolymer and preparation method thereof

The present invention relates to polyolefin. More specifically, the present invention relates to polyolefin having excellent dart drop impact strength, and exhibiting improved transparency, and such polyolefin has a density of 0.915 g/cm3 to 0.930 g/cm3 measured according to ASTM D1505; and satisfies the following requirements (provided that S1+S2+S3=1), when measuring the relative content of peak area according to melting temperature (Tm) using SSA (Successive Self-nucleation and Annealing) analysis: the content(S1) of peak area at Tm less than 100&#xb0; C. is 0.33 to 0.35; the content(S2) of peak area at Tm of 100&#xb0; C. or more and 120&#xb0; C. or less is 0.52 to 0.56; and the content(S3) of peak area at Tm greater than 120&#xb0; C. is 0.10 to 0.14.

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

Provided is a polyethylene resin film exhibiting more improved transparency while exhibiting excellent processability and mechanical properties. The polyethylene resin film having a density of 0.910 g/cmto 0.930 g/cm, and a haze of 10% or less at a thickness of 90 &#x3bc;m to 110 &#x3bc;m includes a first polyethylene resin and a second polyethylene resin at a weight ratio of 6:4 to 8:2, wherein the first polyethylene resin has an MFRR (21.6/2.16) value of 27 to 40, and the second polyethylene resin has an MFRR (21.6/2.16) value of 15 to 23, and the MFRR (21.6/2.16) value is obtained by dividing a melt flow rate (MFR) measured at a temperature of 230&#xb0; C. under a load of 21.6 kg in accordance with ISO 1133 by a melt flow rate (MFR) measured at a temperature of 230&#xb0; C. under a load of 2.16 kg in accordance with ISO 1133.

Polyethylene resin film

An ethylene vinyl acetate copolymer with a high degree of cross-linking and a method of preparing the same are provided, by controlling a temperature and polymerization heat in an autoclave reactor during polymerization, even when a reduced amount of a cross-linking agent is used.

Ethylene vinyl acetate copolymer and method of preparing the same

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Daejeon, South Korea

Hyojoon Lee