Polyolefin composition for roofing applications

A polyolefin composition comprising:

• (A) 18-35% by weight of a copolymer of propylene with an alpha-olefin of formula CH2═CHR, where R is H or a linear or branched C2-C3 alkyl, wherein
• i) the copolymer contains 2.0-4.0% by weight of the alpha-olefin, the amount of the alpha-olefin is based on the total weight of (A);
• and
• ii) the propylene copolymer has a melt flow rate (MFRA), measured according to ISO 1133, 230° C., 2.16 kg, ranging from 30 to 60 g/10 min;
• and
• (B) 65-82% by weight of a copolymer of propylene with an alpha-olefin of formula CH2═CHR, and optionally a diene, where R is H or a linear or branched C2-C8 alkyl and wherein the copolymer comprises 20-35% by weight of the alpha-olefin, the amount of alpha olefin is based on the total weight of (B),
• wherein
• iii) the polyolefin composition comprises a fraction that is soluble in xylene at 25° C. (XS(tot)) in an amount higher than 70% by weight;
• iv) the amounts of (A), (B), and the fraction soluble in xylene at 25° C. (XS(tot)) are based on the total weight of the polyolefin composition, the total weight being 100;
• and
• v) the melt flow rate (MFR), measured according to ISO 1133, 230° C., 2.16 kg, of the polyolefin composition ranges from 0.2 to 2.0 g/10 min.