Polyolefin elastomer composition

摘要

A composition for making an elongated molded product which can be satisfactorily used without having to be painted. The composition comprises an elastomer comprising crystalline polypropylene and ethylene- alpha -olefin rubber (EOR), and 0 to 15 phr of talc. The polypropylene (PP) and EOR have a blending ratio (PP/EOR) by weight of 35/65 to 67/33. The polypropylene has a Q value (Mw/Mn)>/=10 and a melt flow rate of 50 to 120. The EOR has an alpha -olefin content of 10 to 20% by weight. The proportion Y of talc and the proportion X of the EOR in the elastomer satisfy the relation:Y>/=-0.63X+34.