Patent ID: 8129465
Filing Date: 2012-03-06
Classification: C08L

Abstract:
1. A polymeric composition comprising: i. a thermoplastic polyolefin, wherein the thermoplastic polyolefin includes a relatively high crystallinity portion having a crystallinity greater than 65% as measured according to ASTM D3417, wherein the concentration of the relatively high crystallinity portion is at least 70% by weight based on the total weight of the thermoplastic polyolefin; the relatively high crystallinity portion has a melt flow rate from about 4 to about 29 g/10 min measured at 230° C./2.16 kg, the relatively high crystallinity portion includes one or more polypropylenes present at a concentration of at least 95 weight percent based on the total weight of the relatively high crystallinity portion, and the one or more polypropylenes of the relatively high crystallinity portion are one or more polypropylene homopolymers; ii. from about 10% to about 50% by weight polyolefin elastomer based on the total weight of the polymeric composition; wherein the polyolefin elastomer has a melt flow rate measured at 190° C./2.16 kg from about 0.5 to about 25 g/10 minutes and is formed of one or more SLEPs, LEPs, or both and consists of copolymers of ethylene and one or more α-olefin comonomers; and iii at least 9 percent by weight filler based on the total weight of the polymeric composition, wherein the polymeric composition is without any calcined filler or contains less than 0.1 percent by weight calcined filler based on the total weight of the polymeric composition; and wherein the polymeric composition includes a lower crystallinity grade, the lower crystallinity grade includes isotactic polypropylene, and the lower crystallinity grade is present at a concentration of less than 10 wt. %, based on the total weight of the composition; wherein the polymeric composition has a flexural modulus from about 1700 to about 2500 MPa, and the polymeric composition exhibits a scratch resistance of at least about 10 newtons as measured by FLTM BN108-13.