Polypropylene based resins and their compositions

Details Polypropylene based resins and their compositions Polypropylene based resins and their compositions

C - Chemistry, Metallurgy

08

F

C08F 10/06 (2006.01) C08F 210/06 (2006.01) C08F 297/08 (2006.01) C08L 21/00 (2006.01) C08L 23/12 (2006.01) C08L 23/14 (2006.01) C08L 51/06 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2089818

Polypropylene based resins and compositions comprising the resin having extremely high stiffness, heat resistance and impact strength, with these properties being well-balanced, are provided. The polypropylene based resins are characterized by comprising: (1) a propylene polymer having a content of alpha-olefin other than propylene of not more than 4 mole percent, and the following properties (2), (3) and (4): (2) a pentad fraction (mmmm fraction) measured by 13C-NMR of not less than 96.0 percent, (3) a main elution fraction peak position of not less than 118.0°C and a peak half value width of less than 4.0, these values being measured by the temperature raising separation method, and (4) an intrinsic viscosity of not less than 0.5 dl/g, but not more than 5.0 dl/g; and, (5) a rubber content measured by pulse NMR of more than 25 percent.

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