Patent ID: 7375162

Claim:
A filled propylene polymer composition having improved melt strength comprising: (a) 50 to 85 weight percent propylene-ethylene copolymer base resin having a melt flow rate from 0.1 to 30 g/10 min and containing from 1 to 30 weight percent ethylene; (b) 5 to 35 weight percent mineral filler; and (c) 5 to 25 weight percent ethylene polymer component consisting of (i) an ethylene-C 4-8 α-olefin plastomer and (ii) a silane-containing polymer having 0.1 to 20 weight percent vinyltrimethoxysilane or vinyltriethoxysilane incorporated by copolymerization or grafting, the weight ratio of (i) to (ii) ranging from 2:5:1 to 1:2.