A foam comprising a propylene copolymer material comprising at least 50
weight percent of units derived from propylene, based on the total
propylene copolymer material, and units derived from ethylenically
unsaturated comonomers and having a melt flow rate in the range of from
0.5 to 8 g/10 min, a melt strength of at least 5 cN, and a melt
drawability of at least 20 mm/s, process for making a foam using such a
propylene copolymer material, process for making a foam in the form of
thermoplastic foam beads using such a propylene copolymer material, and an
expandable composition comprising such a propylene copolymer material.
