公开(公告)号：US20240352165A1

公开(公告)日：2024-10-24

申请号：US18684539

申请日：2022-08-16

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Davide Tartari ,  Gilberto Moscardi ,  Monica Galvan

IPC: C08F210/16 ,  C08J5/18 ,  E02D17/20 ,  E04D5/08

CPC classification number: C08F210/16 ,  C08J5/18 ,  C08F2800/20 ,  C08J2323/16 ,  E02D17/20 ,  E02D2300/0006 ,  E04D5/08

Abstract: A propylene ethylene copolymer having:



i) a xylene soluble fraction at 25° C. ranging from 30 wt % to 48 wt %;
ii) an intrinsic viscosity of the xylene soluble fraction, ranging from 2.8 to 4.3 dl/g;
iii) a melt flow rate, measured according to ISO 1133 at 230° C. with a load of 2.16 kg, ranging from 0.2 g/10 min to 10 g/10 min;
iv) an ethylene derived units content ranging from 10.3 wt % to 15.4 wt %;
v) the ethylene derived units content on the xylene insoluble fraction, ranging from 6.1 wt % to 9.0 wt %;
vi) the ethylene derived units content on the xylene soluble fraction, ranging from 18.2. wt % to 30.2 wt %;
vii) the 13C-NMR sequences PEP measured on the xylene insoluble fraction, ranging from 4.1 mol % to 6.5 mol %; and
(viii) the 13C-NMR sequences PEP measured on the xylene soluble fraction, ranging from 10.5 mol % to 14.2 mol %.

公开(公告)号：US11453767B2

公开(公告)日：2022-09-27

申请号：US16495289

申请日：2018-03-23

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Gabriele Mei ,  Antonio Mazzucco ,  Tiziana Caputo ,  Enrico Balestra ,  Davide Tartari ,  Gilberto Moscardi

IPC: C08F210/06 ,  C08L23/10 ,  C08L23/12 ,  C08L23/06

Abstract: A propylene ethylene copolymer having: (i) an ethylene derived units content (C2) ranging from 2.0 wt % to 11.0 wt %, based upon the total weight of the copolymer; (ii)) a fraction soluble in xylene (Xs) at 25° C. (Xs) ranging from 7.1 wt % to 28.5 wt %, based upon the total weight of the copolymer; (iii) an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 3.2 dl/g to 5.6 dl/g; (iv) a melting point (Tm) higher than 140.0° C. and fulfilling the relation (I): Tm>155−1.4×C2  (I); and (v) a flexural modulus (TM) higher than 500 MPa and fulfilling the relation (II) TM>1900−285×C2+50×Xs  (II).