Invention Grant
- Patent Title: Heterophasic polypropylene copolymer composition
- Patent Title (中): 异相聚丙烯共聚物组合物
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Application No.: US13826755Application Date: 2013-03-14
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Publication No.: US08716387B2Publication Date: 2014-05-06
- Inventor: Werner Posch , Michael Tranninger , Pauli Leskinen , Bo Malm , Sybille Simon , Norbert Reichelt
- Applicant: Borealis AG
- Applicant Address: AT Vienna
- Assignee: Borealis AG
- Current Assignee: Borealis AG
- Current Assignee Address: AT Vienna
- Agency: Warn Partners, P.C.
- Priority: EP09163353 20090622
- Main IPC: C08K3/26
- IPC: C08K3/26 ; C08K3/34

Abstract:
Heterophasic polypropylene composition comprising (A) 45 to 70 wt % of a propylene homo- or copolymer matrix with an MFR2 in accordance with ISO 1133 (230° C., 2.16 kg load) of ≧80 g/10 min and (B) 25 to 40 wt % of an elastomeric propylene-ethylene copolymer, having an intrinsic viscosity IV (ISO 1628, with decalin as solvent) of ≧3.3 dl/g and an ethylene content of 20 to 50 wt %, (C) 0-15 wt % of an elastomeric ethylene/alpha-olefin random copolymer (D) 3-25 parts per weight of inorganic filler, the heterophasic polypropylene compositions having a total MFR2 (230° C./2.16 kg) in accordance with ISO 1133 of ≧5 g/10 min, a Charpy notched impact strength according to ISO 179/1eA at +23° C. of ≧15.0 kJ/m2, preferably ≧25.0 kJ/m2, a minimum value for the Charpy notched impact strength according to ISO 179/1eA at −20° C. of ≧7.0 kJ/m2, preferably ≧10.0 kJ/m2 and a tensile modulus according to ISO 527-3 of ≧1200 MPa; their preparation and use for producing injection moulded articles being free of flow marks.
Public/Granted literature
- US20130317160A1 HETEROPHASIC POLYPROPYLENE COPOLYMER COMPOSITION Public/Granted day:2013-11-28
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