Patent ID: 6166144
Filing Date: 2000-12-26
Classification: C08L

Abstract:
A polypropylene resin composition satisfying the following conditions (a) and (b) which consists essentially of a crosslinked product of (i) an ethylene/.alpha.-olefin/non-conjugated diene copolymer elastoiner satisfying the following conditions (c) to (e) and (ii) a polypropylene resin:(a) the resin composition can be drawn such that a diameter d of a strand obtained when the resin composition is extruded from a circular die having an inside diameter D isd.ltoreq.0.25.times.D, and(b) the ratio of the maximum value of elongational viscosity to the maximum value of shear viscosity, measured at the same temperature and the same rate of strain is:elongational viscosity/shear viscosity.gtoreq.5;(c) the .alpha.-olfin has a carbon number of from 4 to 20;(d) the ratio of the units originated from ethylene and .alpha.-olefin, ethylene/.alpha.-olefin, is 35/65 to 5/95 by weigh ratio; and(e) the iodine value thereof is larger than 0 and at most 50, wherein a blending ratio of the polypropylene resin (ii) to the ethylene/.alpha.-olefin/non-conjugated diene copolymer elastomer (i) is 99/1 to 70/30, weight ratio.