Crystalline polypropylene and crystalline polypropylene...

Details Crystalline polypropylene and crystalline polypropylene... Crystalline polypropylene and crystalline polypropylene...

C - Chemistry, Metallurgy

08

F

400/3078, 400/40

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

Patent

CA 2002200

ABSTRACT OF THE DISCLOSURE Crystalline polypropylene excellent in rigidity, heat resistance and surface hardness is disclosed, having a ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) (Mw/Mn) of 10 or more, an intrinsic viscosity [n] of from 0.8 to 5.0 dl/g as measured in tetralin at 1135°C, a cold xylene-soluble content (CXS) of not more than 4% by weight, a density (d) of 0.910 g/cm3 or more as measured at 23°C, and a long period (L) (.ANG.) as measured at 25°C by a small-angle X-ray scattering method satisfying relationship: L ? Lc = 6667d - 5894 wherein d is a density at 23°C; and Lc is a value (.ANG.) obtained by equation: Lc = 6667d - 5894. A crystalline polypropylene composition contain- ing the foregoing crystalline polypropylene, which is excellent in rigidity and heat resistance, is also disclosed.

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