发明名称 |
Propylene polymer compositions |
摘要 |
A propylene polymer composition comprising (percent by weight): A) 68%-80%, of a propylene homopolymer having a Polydispersity Index (P.I.) value of from 4.7 to 10 and MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230° C. and 2.16 kg load) from 10 to 30 g/10 min; B) 20%-32%, of a copolymer of propylene containing from 40.1% to 42.5% extremes included of ethylene derived units; the composition having an intrinsic viscosity of the fraction soluble in xylene at 25° C. comprised between 3 and 6 dl/g and a MFR L from 4 to 12 g/10 min. Said Propylene polymer composition being particularly suitable for injection molded articles having high rigidity and high impact properties at room and at low temperatures. |
申请公布号 |
US9303159(B2) |
申请公布日期 |
2016.04.05 |
申请号 |
US201113811618 |
申请日期 |
2011.07.22 |
申请人 |
Basell Poliolefine Italia S.r.l. |
发明人 |
Ciarafoni Marco;Massari Paola;Rathinakumar Manikandan;Biondini Gisella;Caputo Tiziana |
分类号 |
C08L23/00;C08L23/16;C08L23/12 |
主分类号 |
C08L23/00 |
代理机构 |
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代理人 |
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主权项 |
1. A propylene polymer composition comprising (percent by weight):
A) 68%-80%, of a propylene homopolymer having a Polydispersity Index (P.I.) value of from 4.7 to 10 and MFR L (Melt Flow Rate according to ISO 1133, condition I, i.e. 230° C. and 216 kg load) from 12 to 25 g/10 min; B) 20%-32%, of a copolymer of propylene containing from 40.1% to 42.5% extremes included of ethylene derived units; the propylene polymer composition having: (i) an intrinsic viscosity of the fraction soluble in xylene at 25° C. between 3 and 6 dl/g, (ii) an Izod impact strength measured at 23° C. from between 50 and 60 kJ/m2, (iii) an Izod impact strength measured at 0° C. between 25 and 40 kJ/m2, (iv) an Izod impact strength measured at −20° C. between 10 and 30 kJ/m2, (v) a flexural modulus between 900 and 1300 MPa, and (vi) a MFR L from 4 to 12 g/10 min. |
地址 |
Milan IT |