abstract |
Compositions based on propylene polymers (compositions (C)) comprising: from 68 to 80% by weight of a statistical propylene copolymer (copolymer (A)) which contains from 12 to 20% by weight of units derived from 1-butene and from 0 to 2% by weight of units derived from ethylene, and from 20 to 32% by weight of a statistical propylene copolymer (copolymer (B)) which contains from 0 to 15% by weight of units derived from 1-butene and from 1 to 8% by weight of units derived from ethylene. |