Polypropylene-based resin composition
AssigneeLG Chem, Ltd.
InventorsSeul Ki Kim, Eun Jung Lee, Choong Hoon Lee, Ki Won Han, Jae Kwon Jang, Hyo Jung Han, In Sung Park
Life of this patent
Estimating the term…
Abstract
The present invention relates to a polypropylene-based resin composition which exhibits mechanical properties such as excellent strength, etc. and has an improved impact strength, and to a molded article including the same. The olefin-based copolymer includes: a polypropylene-based resin; and an olefin-based copolymer, wherein the olefin-based copolymer includes polymeric fractions defined by three different peaks at a given temperature when analyzed by cross-fractionation chromatography (CFC).
Claims20
A polypropylene-based resin composition comprising:
- a polypropylene-based resin;
- and an olefin-based copolymer containing an ethylene repeating unit and an alpha-olefin repeating unit,
- wherein when the olefin-based copolymer is analyzed by cross-fractionation chromatography (CFC), it includes
- a first fraction defined as a first peak appearing at a first elution temperature (Te1) of −20° C. to 50° C.,
- a second fraction defined as a second peak appearing at a second elution temperature (Te2) of 50° C. to 85″C, and
- a third fraction defined as a third peak appearing at a third elution temperature (Te3) of 85″C to 130° C.,
- and wherein the fraction ratio of the second fraction defined by the integral area of the second peak is 7 to 25%.
A polypropylene-based resin composition comprising:
- a polypropylene-based resin;
- and an olefin-based copolymer containing an ethylene repeating unit and an alpha-olefin repeating unit,
- wherein when the olefin-based copolymer is analyzed by cross-fractionation chromatography (CFC), it includes
- a first fraction defined as a first peak appearing at a first elution temperature (Te1) of −20° C. to 50° C.,
- a second fraction defined as a second peak appearing at a second elution temperature (Te2) of 50° C. to 85″C, and
- a third fraction defined as a third peak appearing at a third elution temperature (Te3) of 85″C to 130° C., and
- wherein the second fraction of the olefin-based copolymer has the number of short-chain branches (SCB) per 1,000 carbon atoms of more than 50.
Dependencies are inferred from the claim text.