PROPYLENE BASED TERPOLYMER

摘要

A propylene, ethylene, 1-butene terpolymer containing: a) from 1.8 wt% to 5.9 wt% of ethylene derived units; b) from 2.0 wt% to 4.5 wt% of 1 butene derived units; wherein: i) the ratio C2wt%/C4wt% ranges from 0.9 to 1.3; wherein C2wt% is the weight per cent of ethylene derived units and C4wt% is the weight per cent of 1-butene derived units; ii) the Melt flow rate ranges from 1.0 to 30.0 g/10 min, iii) the xylene soluble fraction at 25°C is comprised between 10 wt% and 30 wt%.