Ethylene-a-olefin copolymer and molded article

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United States of America Patent

PATENT NO 8871885
APP PUB NO 20100305292A1
SERIAL NO

12744857

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Abstract

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An ethylene-α-olefin copolymer wherein the copolymer has a monomer unit based on ethylene and a monomer unit based on an α-olefin having 3 to 20 carbon atoms, the density (d) is 860 to 950 kg/m3, the melt flow rate (MFR) is 1 to 100 g/10 min, the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is 4 to 30, the ratio (Mz/Mw) of the Z average molecular weight (Mz) to the weight average molecular weight (Mw) is 2 to 5, the swell ratio (SR) is 1.8 or more, and the characteristic relaxation time (τ) obtained by linear viscoelasticity measurement is 0.01 to 10 seconds.

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Patent Owner(s)

  • SUMITOMO CHEMICAL COMPANY, LIMITED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawashima, Yasutoyo Ichihara, JP 31 137
Nozue, Yoshinobu Ichihara, JP 35 156
Ochi, Naoko Chiba, JP 18 64

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