公开(公告)号：US20190322850A1

公开(公告)日：2019-10-24

申请号：US16341584

申请日：2017-10-05

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： PAOLA MASSARI ,  ANDREA FELISATI ,  MARCO IZZI ,  CLAUDIO CAVALIERI ,  MARCO CIARAFONI ,  SILVIA GUERRA ,  ROBERTO PANTALEONI ,  FEDERICA MALIZIA

IPC: C08L23/12 ,  C08L23/14 ,  C08K5/1575 ,  C08K5/098 ,  C08K5/00 ,  C08K5/56

Abstract: A nucleated propylene polymer composition made from or containing: A) a propylene homopolymer; B) a copolymer of propylene with ethylene derived units; the nucleated composition having a fraction soluble in xylene at 25° C. between 9.0 and 21.0 wt %, an intrinsic viscosity of the fraction soluble in xylene at 25° C. between 1.0 and 1.9 dl/g, a total melt flow rate between 1.5 and 5 g/10 min and the value of the relation (I): 22.5+0.2*MFR−1.2*Xs+0.2*IV  (I) is higher than 5.9; wherein MFR is the melt flow rate of the nucleated composition; IV is the intrinsic viscosity of the fraction soluble in xylene at 25° C.; and Xs is the fraction soluble in xylene at 25° C., the amount of A+B is equal to 100 wt %, and the nucleating agent is selected from the group consisting of aromatic or aliphatic carboxylic acids, aromatic metal phosphates, sorbitol derivatives and talc.