公开(公告)号：US11807744B2

公开(公告)日：2023-11-07

申请号：US17285838

申请日：2019-10-17

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Takeshi Nakajima ,  Kunio Yamamoto ,  Masashi Uchida

IPC: C08L23/16 ,  C08L23/12

CPC classification number: C08L23/12 ,  C08L23/16 ,  C08L2201/00 ,  C08L2205/025 ,  C08L2207/02

Abstract: A polypropylene composition made from or containing:



(i) component (1) made from or containing a propylene homopolymer or copolymer containing 0 to 0.5% by weight of an ethylene-derived unit; and
(ii) component (2) made from or containing an ethylene/propylene copolymer containing 65 to 85% by weight of an ethylene-derived unit;
wherein
1) the Mw/Mn value of xylene insolubles (XI) of the polypropylene composition as measured by GPC is in the range of 6 to 20,
2) the weight ratio of component (1) to component (2) is in the range of 70:30 to 85:15,
3) the intrinsic viscosity of xylene solubles (XSIV) of the polypropylene composition is in the range of 1.0 to 3.0 dl/g, and
4) the MFR (at 230° C. under a load of 2.16 kg) of the polypropylene composition is in the range of 3 to 15 g/10 min.

公开(公告)号：US11319431B2

公开(公告)日：2022-05-03

申请号：US17253435

申请日：2019-06-19

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Takeshi Nakajima ,  Kazuhiko Sakai ,  Kunio Yamamoto ,  Masashi Uchida

IPC: C08L23/16 ,  C08L23/12

Abstract: A polypropylene composition made from or containing (i) component (1) made from or containing a propylene homopolymer or copolymer containing 0 to 0.5% by weight of an ethylene-derived unit; (ii) component (2) made from or containing an ethylene/propylene copolymer containing 15 to 30% by weight of an ethylene-derived unit; and (iii) 0.01 to 1.0 parts by weight of a crystal nucleating agent based on a total of 100 parts by weight of component (1) and component (2); wherein 1) the Mw/Mn value of xylene insolubles (XI) is in the range of 6 to 20, 2) the weight ratio of component (1) to component (2) is in the range of 82:18 to 90:10, 3) the intrinsic viscosity of xylene solubles (XSIV) is in the range of 2.5 to 3.4 dl/g, 4) the MFR (at 230° C. under a load of 2.16 kg) is in the range of 3 to 10 g/10 min.