Patent ID: 7968638
Filing Date: 2011-06-28
Classification: C08L,Y10T

Abstract:
1. A molded article comprising: a filled polymer composition consisting essentially of: (a) a first polymer component comprising propylene copolymer having a heat of fusion <about 75 J/g, a triad tacticity of from about 50% to about 99%, a melt flow rate @ 230° C. ≦about 800 g/10 min., a propylene content of 75 to 95% by weight, an ethylene content of 5 to 25% by weight, a Tm less than about 105° C., and a molecular weight distribution of 1.5 to 3.5; (b) at least about 40% by weight of a filler, based on the total weight of the filled composition; (c) from 0 to 40 wt % homopolypropylene; and (d) from 3 to 40 wt % of a synthetic or natural rubber; where the filled polymer composition has a tensile strength greater than or equal to 4.8 mPa and an elongation of greater than or equal to 800%.