Hyundai Motor Company

Sambark Lft Co., Ltd.

Joo Hong Kim

Min Ho Choi

Jae Shik Lee

The present invention provides long-fiber reinforced polypropylene compositions 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 &#x3bc;m; (c) about 2-20 wt % of an elastomer, a plastomer, or a mixture thereof having a melt index as measured at 190&#xb0; C. of about 20-150 g/10 min, wherein said elastomer, plastomer, or mixture thereof was polymerized by a metallocene-based catalyst; and (d) about 0.01-3 wt % of a radical initiator, wherein the ratio of the melt index as measured at 230&#xb0; C. of the crystalline polypropylene resin to the melt index as measured at 190&#xb0; C. of the elastomer, the plastomer, or the mixture thereof is in the range of about 0.5 to about 10.

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Chungju-si, South Korea

Joo Hong Kim