Invention Grant
- Patent Title: Polypropylene composition and molded article
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Application No.: US17253435Application Date: 2019-06-19
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Publication No.: US11319431B2Publication Date: 2022-05-03
- Inventor: Takeshi Nakajima , Kazuhiko Sakai , 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: JPJP2018-116247 20180619
- International Application: PCT/JP2019/025266 WO 20190619
- International Announcement: WO2019/245058 WO 20191226
- 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; (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.
Public/Granted literature
- US20210253837A1 POLYPROPYLENE COMPOSITION AND MOLDED ARTICLE Public/Granted day:2021-08-19
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