Patent ID: 7629417

Claim:
A molded article comprising a thermoplastic composition, wherein: (i) the thermoolastic composition has been molded in a tool which has been polished to a SPE 1 finish and heated between 100° F. and 170° F. so that the resulting molded article (A) has a high gloss of above 90% as measured by a gloss meter, (B) has a scratch resistant surface, and (C) is ductile at 0° C. or −30° C. as measured by a multiaxial impact tester; and, (ii) the thermoplastic composition comprises in admixture: (a) a crystalline polybutene-1 in an amount between 0.1% and 60% by weight of the composition; (b) a crystalline polypropylene in an amount between 60% and 80% by weight of the composition; (c) a thermoplastic polyolefin elastomer in an amount between 15% and 40% by weight of the composition, the thermoplastic polyolefin elastomer comprising ethylene and propylene monomer units; (d) a lubricant additive in an amount between about 0.1% and 0.9% by weight of the composition comprising an unsaturated fatty acid ester which reduces surface friction to improve scratch and mar performance and produces a glossy finish; (e) optionally a hypernucleating agent that acts to provide crystallinity to the polypropylene and as a surface hardener in an amount between 0.1% and 0.9% by weight of the composition; (f) UV absorbers, modified amine light stabilizers and antioxidants in an amount between 0.25% to 5% by weight of the composition; (g) a color concentrate in an amount up to 14% by weight of the composition; (h) optionally a nano sized filler which improves material stability under temperature change and physical properties; and (i) optionally a coupling agent which couples the composition together in an amount up to about 10% by weight.