US 2010/0144975 A1 · Polypropylene Resin Composition With Good Transparence And Good Impact Strength

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.

Claims17

Dependent claims

A polypropylene resin composition comprising:

(a) propylene-alpha olefin random copolymer comprising ethylene or one or more C4-C10 alpha olefins of 0.5-10 mol % respective to the random copolymer;
(b) propylene-alpha olefin elastic copolymer comprising ethylene or one or more C4-C10 alpha olefins of 20-70 weight %;
and
(c) ethylene-alpha olefin copolymer comprising one or more C4-C10 alpha olefins of 1-50 weight %.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

12/631,287Filed 4 Dec 2009

Priority

KR 10-2008-01232335 Dec 2008

Published

10 Jun 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C08J 5/18
Manufacture of articles or shaped materials containing macromolecular substances: manufacture of films or sheets
C08L 23/142
Copolymers of propene: at least partially crystalline copolymers of propene with other olefins
C08J 2323/14
Homopolymers or copolymers of propene: copolymers of propene
C08L 23/0815
With unsaturated hydrocarbons only containing four or more carbon atoms: with aliphatic 1-olefins containing one carbon-to-carbon double bond

Polypropylene Resin Composition With Good Transparence And Good Impact Strength

Life of this patent

Polypropylene Resin Composition With Good Transparence And Good Impact Strength

Life of this patent

Abstract

Claims17