Invention Grant
- Patent Title: Polypropylene composition with excellent paint adhesion
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Application No.: US16464973Application Date: 2017-12-14
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Publication No.: US10745548B2Publication Date: 2020-08-18
- Inventor: Claudia Kniesel , Pavel Shutov , Susanne Kahlen , Daniela Mileva , Floran Prades
- Applicant: BOREALIS AG
- Applicant Address: AT
- Assignee: BOREALIS AG
- Current Assignee: BOREALIS AG
- Current Assignee Address: AT
- Agency: Tarolli, Sundheim, Covell & Tummino LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@16a9536e
- International Application: PCT/EP2017/082743 WO 20171214
- International Announcement: WO2018/109056 WO 20180621
- Main IPC: C08L23/12
- IPC: C08L23/12 ; C08L23/16 ; C08F2/00

Abstract:
The invention relates to a polypropylene composition (C) comprising: (i) 62 to 85 wt.-%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO1) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 6.0 to 50.0 g/10 min; (ii) 10 to 30 wt.-%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO2) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 0.1 to 5.5 g/10 min; (iii) 5 to 30 wt.-%, based on the total weight of the polypropylene composition (C), of an inorganic filler (F); wherein (a) the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO1) has a lower amount [in mol %] of C2 and/or C4 to C12 α-olefin derived comonomer units than the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO2); (b) the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO1) has a lower the intrinsic viscosity (IV) than the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO2); and (c) the xylene cold soluble (XCS) fraction of the heterophasic propylene copolymer (HECO2) has an intrinsic viscosity (IV) in the range of 6.0 to 15.0 dl/g.
Public/Granted literature
- US20190315956A1 POLYPROPYLENE COMPOSITION WITH EXCELLENT PAINT ADHESION Public/Granted day:2019-10-17
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