Patent ID: 6329454
Filing Date: 2001-12-11
Classification: C08F,C08L,Y10S

Abstract:
A propylene polymer composition comprising:(a) from about 40 to about 85 parts by weight of an isotactic propylene polymer,(b) from about 10 to about 55 parts by weight of an interpolymer prepared from a metallocene catalyst having(i) a density, d, of from about 0.85 to about 0.97 g/cm.sup.3 as measured in accordance with ASTM D-792,(ii) a melt flow rate, I.sub.2, from about 0.001 to about 50 g/10 min as measured in accordance with ASTM D-1238, Condition 190.degree. C./2.16 kg, and(iii) a melt tension of the interpolymer satisfying the following relationship:MT>1.328-0.7879log(I.sub.2)+22.5(d-0.85)-40.56{log(I.sub.2)}.times.(d-0. 85)wherein MT represents the melt tension in grams,(c) from about 5 to about 50 parts by weight of a filler,(d) from about 0.025 to about 1.0 parts by weight of a slip agent selected from the group consisting of a saturated fatty acid amide, a saturated ethylenebis(amide), an unsaturated fatty acid amide, an unsaturated ethylenebis(amide) and mixtures thereof, and(e) from 0 to about 15 parts by weight of an additional polymer, wherein parts by weight are based on the total weight of the propylene polymer composition.