COMPOSITION BASED ON PROPYLENE POLYMERS FOR EXPANDED GRANULES, PROCESS FOR OBTAINING IT AND ITS USE.

摘要

COMPOSITION FOR EXPANDED GRANULES, WHICH COMPRISES, PER 100 PARTS BY WEIGHT,- FROM 60 TO 90 PARTS BY WEIGHT OF A PROPYLENE HOMOPOLYMER (A) HAVING A MELT FLOW INDEX (MFI) FROM 0.1 TO 20 G/10 MIN AND- FROM 40 TO 10 PARTS BY WEIGHT OF A PROPYLENE RANDOM COPOLYMER (B) CONTAINING FROM 3 TO 20 MOLOF ETHYLENE AND/OR OF AN a-OLEFIN HAVING FROM 4 TO 6 CARBON ATOMS, THE MFI OF WHICH RANGES FROM 25 TO 3000 G/10 MIN. PROCESS FOR OBTAINING THIS COMPOSITION AND USE OF THIS COMPOSITION FOR THE MANUFACTURE OF EXPANDED GRANULES AND CELLULAR ARTICLES OBTAINED BY MOULDING THESE GRANULES.