Invention Grant
- Patent Title: Polypropylene composition and molded article
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Application No.: US17285838Application Date: 2019-10-17
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Publication No.: US11807744B2Publication Date: 2023-11-07
- Inventor: Takeshi Nakajima , Kunio Yamamoto , Masashi Uchida
- Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
- Applicant Address: IT Milan
- Assignee: Basell Poliolefine Italia S.r.l.
- Current Assignee: Basell Poliolefine Italia S.r.l.
- Current Assignee Address: IT Milan
- Priority: JP 18196745 2018.10.18
- International Application: PCT/JP2019/041813 2019.10.17
- International Announcement: WO2020/080555A 2020.04.23
- Date entered country: 2021-04-15
- Main IPC: C08L23/16
- 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; 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.
(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.
Public/Granted literature
- US20210388192A1 POLYPROPYLENE COMPOSITION AND MOLDED ARTICLE Public/Granted day:2021-12-16
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