Polypropylene compositions containing glass fiber fillers

A composition having a melt flow rate, measured according to ISO 1133 with a load of 2.16 kg at 230° C., from 2 to 100 g/10 min, the composition comprising:

• A) from 30 to 60% by weight of a polyolefin composition comprising:
• a) 10-50% by weight of a copolymer of propylene with one or more comonomer(s) selected from ethylene and CH2═CHR alpha-olefins, where R is a 2-8 carbon alkyl, which copolymer contains from 1 to 8% of comonomer(s);
• b) 50-90% by weight of a copolymer of ethylene and (i) propylene or (ii) other CH2═CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or (iii) a combination thereof, optionally with a diene, containing from 50 to 80% by weight of ethylene;
• wherein the weight ratio α/XS of the content b of copolymer component (b) to the fraction XS soluble in xylene at room temperature (about 25° C.), both (b and XS) referred to the total weight of (a)+(b), is 1.5 or less, and the intrinsic viscosity [η] of the XS fraction is 3 dl/g or more;
• and the total quantity of copolymerized ethylene is from 30% to 65% by weight;
• B) from 5 to 30% by weight of a glass fiber filler;
• C) from 0.5 to 3% by weight of a compatibilizer;
• D) from 10 to 40% by weight of a polypropylene component selected from propylene homopolymers, propylene copolymers containing up to 5% by moles of ethylene and/or C4-C10 α-olefin(s) and combinations thereof, where the melt flow rate, measured according to ISO 1133 with a load of 2.16 kg at 230° C. of the polypropylene component D), is from 0.3 to 2500 g/10 min.