发明名称 |
CLEAR AND FLEXIBLE PROPYLENE POLYMER COMPOSITIONS |
摘要 |
A propylene polymer composition having a melt flow rate (MFR) value from 3 to 30 g/10 min, comprising (percent by weight): A) 50-90% of one or more propylene copolymer(s) having a content of xylene-insoluble mojety at room temperature of not less than 85%, selected from the group consisting of propylene-ethylene random copolymers containing from 1 to 7%, of ethylene; propylene-C<SUB>4</SUB>-C<SUB>8 </SUB>alpha-olefin copolymers containing 2-10% of the C<SUB>4</SUB>-C<SUB>8 </SUB>alpha-olefins; and propylene-ethylene-C<SUB>4</SUB>-C<SUB>8 </SUB>alpha-olefin copolymers containing 0.5-5% of ethylene and 2-6% Of C<SUB>4</SUB>-C<SUB>8 </SUB>alpha-olefins; and B) 10-50% of a copolymer of propylene containing from 8 to 40% of ethylene and optionally 1-10% of a C<SUB>4</SUB>-C<SUB>8 </SUB>alpha-olefin; the said MFR value (MFR (2)) being obtained by subjecting to degradation a precursor composition comprising the same components A) and B) in the above said proportions, but having the MFR value (MER (1)) from 0.1 to 5 g/10 min with a ratio MFR (2) to MFR (1) of from 1.5 to 20. |
申请公布号 |
EP1448622(A1) |
申请公布日期 |
2004.08.25 |
申请号 |
EP20020787778 |
申请日期 |
2002.11.22 |
申请人 |
BASELL POLIOLEFINE ITALIA S.P.A. |
发明人 |
PELLICONI, ANTEO;LONARDO, ANGELO;MEI, GABRIELE |
分类号 |
C08L23/16;C08F8/50;C08F297/00;C08L23/10;C08L23/14 |
主分类号 |
C08L23/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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