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1. (WO2017021137) MUTILAYER FILM COMPRISING PROPYLENE-ETHYLENE-1-BUTENE TERPOLYMERS

Pub. No.:    WO/2017/021137    International Application No.:    PCT/EP2016/067143
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Wed Jul 20 01:59:59 CEST 2016
IPC: B32B 27/32
C08J 5/18
C08L 23/14
Applicants: BASELL POLIOLEFINE ITALIA S.R.L.
Inventors: MASSARI, Paola
CATHELIN, Caroline
CAVALIERI, Claudio
CIARAFONI, Marco
FELISATI, Andrea
FERRARO, Angelo
MORINI, Giampiero
PIEMONTESI, Fabrizio
VITALE, Gianni
Title: MUTILAYER FILM COMPRISING PROPYLENE-ETHYLENE-1-BUTENE TERPOLYMERS
Abstract:
A polyolefin composition comprising: A) from 19 wt% to 50 wt% of a propylene ethylene copolymer having an ethylene derived units content ranging from 1.5 wt% to 6.0 wt% B) from 50 wt% to 81 wt% of a propylene ethylene 1-butene terpolymer having an ethylene derived units content ranging from 1.5 wt% and 6.0 wt% and 1-butene derived units content of between 4.8 wt% and 12.4 wt%; the sum of the amount of component A) and B) being 100; the composition being characterized by the following features: molecular weight distribution (MWD), expressed in terms of Mw/Mn, greater than 4.0; the creep and recovery curve measured on the polymer fuse at 200°C measured according to the procedure reported in the characterizing section shows a maximum value between 600 and 1200 seconds lower than 53x10-51/Pa.