Polypropylene resin composition with good transparence and good impact strength
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United States of America Patent
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Jul 15, 2014
Grant Date -
Jun 10, 2010
app pub date -
Dec 4, 2009
filing date -
Dec 5, 2008
priority date (Note) -
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Abstract
Provided is a polypropylene resin composition having excellent impact resistance, impact strength at low temperature and transparence comprising ethylene-alpha olefin copolymer (c) to a polypropylene resin composition in which the ratio of viscosity is regulated by adjusting molecular weight of propylene-alpha olefin random copolymer (a) and propylene-alpha olefin elastic copolymer (b), thereby regulating impact resistance and flexural modulus of the polypropylene resin composition and improving transparence; therefore, applying as various products including cold-storage containers for freezer and refrigerator, food packaging container, extrusion blow molding material, film, sheet and bottle cap, etc.
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