Patent ID: 7442435

Claim:
A long-fiber reinforced polypropylene composition comprising: (a) about 29-77 wt % of a crystalline polypropylene resin comprising about 50-100 wt % of a propylene homopolymer; (b) about 20-50 wt % of a long-fiber reinforcing material having an average fiber length of about 3-50 mm and an average diameter of about 4-30 μm; (c) about 2-20 wt % of an elastomer, a plastomer, or a mixture thereof having a melt index of about 20-150 g/10 min as measured at 190° C. and polymerized by a metallocene-based catalyst; and (d) about 0.01-3 wt % of a radical initiator, wherein the ratio of the melt index of the crystalline polypropylene resin as measured at 230° C. to the melt index as measured at 190° C. of the elastomer, the plastomer, or the mixture thereof is in the range of about 0.5 to about 10.