Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1997-11-28
1999-02-23
Warzel, Mark L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525322, 525 88, 525323, 525 95, 526943, C08L 2312
Patent
active
058745050
ABSTRACT:
A polypropylene composition comprising 20 to 95% by weight of a stereoregular polypropylene characterized by the specified physical properties determined from .sup.13 C NMR spectra and 5 to 80% by weight of an .alpha.-olefin copolymer comprising 10 to 90% by weight of an .alpha.-olefin and 10 to 90% by weight of at least one of other .alpha.-olefins. The polypropylene composition demonstrates good balance of rigidity and impact resistance, high heat resistance and high toughness, when used as molding materials.
Hatada Kouichi
Kageyama Akiko
Kawamoto Naoshi
Oogi Yoshiyuki
Saito Jun
Chisso Corporation
Warzel Mark L.
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