PROPLYENE POLYMER COMPOSITION, MOLDED OBJECT, AND POLYOLEFIN COPOLYMER
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United States of America Patent
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app pub date -
Dec 27, 2006
filing date -
Mar 29, 2001
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Abandoned
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Abstract
The present invention provides a propylene polymer composition containing a component (A) which is either a propylene block copolymer or a composition containing a propylene polymer and a rubber ingredient; and a component (B) which is a polyolefin copolymer that contains a fraction eluting at 101.degree. C. or higher through temperature rising elution fractionation chromatography, the fraction exhibiting a .sup.13C-NMR peak attributed to an ethylene chain, the polyolefin copolymer having an intrinsic viscosity falling within a range of 0.5 to 10.0 deciliter/g as measured at 135.degree. C. in decalin; a molded product formed from the composition; and a polyolefin copolymer formed of the component (B) in which a propylene polymer segment and an ethylene copolymer segment are chemically linked. According to the invention, a propylene block copolymer or a composition containing a propylene polymer and a rubber ingredient that are excellent in impact strength and tensile strength, while maintaining high rigidity thereof can be produced.
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