公开(公告)号：US20220372198A1

公开(公告)日：2022-11-24

申请号：US17771667

申请日：2020-10-22

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Yutaka Yokoyama ,  Akihiro Kamimura ,  Hiroshi Kajioka

IPC: C08F297/08

Abstract: A polypropylene composition made from or containing
a first polymer consisting of component (1) made from or containing a propylene homopolymer having an MFR of 80 to 300 and containing 97.5% by weight or more of xylene insolubles (XI), wherein XI of the propylene homopolymer has a Mw/Mn of 4 to 10; and component (2) made from or containing an ethylene/propylene copolymer containing 35 to 50% by weight of an ethylene-derived unit; wherein the polypropylene composition has the following characteristics: 1) the relative proportions of component (2)/[component (1) and component (2)] is more than 30% by weight and not more than 50% by weight, 2) the intrinsic viscosity of xylene solubles (XSIV) of the first polymer is in the range of 1.5 to 4.0 dl/g, and 3) the MFR of the first polymer is in the range of 20 to 100 g/10 min.

公开(公告)号：US11459454B2

公开(公告)日：2022-10-04

申请号：US17051109

申请日：2019-04-25

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Yutaka Yokoyama ,  Akihiro Kamimura ,  Hiroshi Kajioka

IPC: C08L23/12 ,  B29C45/00 ,  C08J3/12 ,  C08L23/16

Abstract: A polypropylene composition made from or containing a polymer made from or containing: (i) component (1) made from or containing a propylene homopolymer having MFR of 100 to 300 (at a temperature of 230° C. under a load of 2.16 k(g) and containing more than 97.5% by weight of xylene insolubles (XI), wherein XI has a Mw/Mn of 4 to 10; (ii) component (2) made from or containing an ethylene/propylene copolymer containing 15 to 50% by weight of an ethylene-derived unit; wherein 1) relative proportions of component (1) and component (2) are, respectively, not less than 50 parts by weight but less than 70 pbw and more than 30 pbw but not more than 50 pbw, 2) intrinsic viscosity of xylene solubles (XSIV) of the polymer is in the range of 1.5 to 4.0 dl/g, 3) MFR of the polymer is in the range of 20 to 100 g/10 min.