Patent ID: 6150427
Filing Date: 2000-11-21
Classification: C08F,C08J

Abstract:
A foamable propylene-based copolymer of a propylene-ethylene random copolymer, having:(1) an ethylene unit content (x (wt. %)) of between 0.2 and 10% by weight,(2) a melt index (MI (at 230.degree. C. under a load of 2160 g)) of between 1 and 16 g/10 min,(3) a boiling diethyl ether extraction (E (wt. %)) and x satisfying the formula (I):E.ltoreq.0.25x+1.1 (I),(4) a melting point (Tm (.degree. C.)) as measured through differential scanning calorimetry and x satisfying the formula (II):Tm.ltoreq.165-5x (II),and(5) an isotactic triad fraction in the PPP chain moiety as measured through .sup.13 C--NMR of not smaller than 98 mol %.