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    • 1. 发明公开
    • CLEAR AND FLEXIBLE PROPYLENE POLYMER COMPOSITIONS
    • 透明和柔软的丙烯聚合物组合物
    • EP1448622A1
    • 2004-08-25
    • EP02787778.6
    • 2002-11-22
    • Basell Poliolefine Italia S.P.A.
    • PELLICONI, AnteoLONARDO, AngeloMEI, Gabriele
    • C08F8/50C08L23/10C08L23/16
    • C08L23/142C08F8/50C08F2800/20C08F2810/10C08L2205/02C08L2205/025C08L2308/00Y10T428/31928C08L2666/06C08F110/06C08F210/06C08F210/02
    • 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-C4-C8 α-olefin copolymers containing 2-10% of the C4-C8 alpha-olefins; and propylene-ethylene-C4-C8 a-olefin copolymers containing 0.5-5% of ethylene and 2-6% of C4-C8 α-olefins; and B) 10-50% of a copolymer of propylene containing from 8 to 40% of ethylene and optionally 1-10% of a C4-C8 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 (MFR (1)) from 0.1 to 5 g/10 min with a ratio MFR (2) to MFR (1) of from 1.5 to 20.
    • 一种丙烯聚合物组合物,其熔体流动速率(MFR)值为3-30克/ 10分钟,包括(重量百分数):A)50-90%的一种或多种丙烯共聚物,其中二甲苯 - 选自含有1%至7%乙烯的丙烯 - 乙烯无规共聚物;不饱和聚酯树脂, 含有2-10%的C4-C8α-烯烃的丙烯-C4-C8α-烯烃共聚物; 和含有0.5-5%乙烯和2-6%C4-C8α-烯烃的丙烯 - 乙烯-C4-C8α-烯烃共聚物; 和B)10-50%的含有8-40%乙烯和任选1-10%C 4 -C 8α-烯烃的丙烯共聚物; 所述MFR值(MFR(2))通过使包含上述比例的相同组分A)和B)的前体组合物降解而获得,但MFR值(MFR(1))为0.1至5g / 10分钟,MFR(2)与MFR(1)之比为1.5-20。
    • 4. 发明公开
    • POLYPROPYLENE FIBRES SUITABLE FOR SPUNBONDED NON-WOVEN FABRICS
    • 聚丙烯纤维热凝spunbondeds生产
    • EP1543185A1
    • 2005-06-22
    • EP03753461.7
    • 2003-09-23
    • Basell Poliolefine Italia S.P.A.
    • SARTORI, FrancoLONARDO, AngeloHERBEN, Pierre
    • D01F6/46D04H3/14C08L23/10
    • D04H3/16C08L23/142C08L2203/12C08L2205/02D01F6/46Y10T428/2913C08L2666/06
    • A fibre for spunbonded fabrics comprising a propylene polymer composition (A) having an MFR (1) value from 6 to 150 g/10 min and being selected from (i) a crystalline propylene random copolymer or crystalline propylene polymer composition containing at least 0.8% by weight of ethylene and having a melting temperature of 153° C or higher, a content of fraction soluble in xylene at room temperature lower than 10% by weight, and a value of the ratio of the polymer fraction collected at the temperature range from 25° to 95° C to the xylene soluble fraction at room temperature higher than 4; and (ii) a crystalline propylene polymer composition having a melting temperature of 153° C or higher, a content of fraction soluble in xylene at room temperature lower than 10% by weight; the said composition containing at least 0.64 wt% of ethylene or a C4-C10 a-olefin recurring unit and comprising: (1) 20-80 wt% of a crystalline propylene polymer containing up to 1.5 wt% of ethylene and/or C4-C10 a-olefin; and (II) 20-80 wt% of a crystalline propylene random copolymer selected from (IIa) a copolymer of propylene with 0.8 to 10 wt% of ethylene and/or (IIb) a copolymer of propylene with 1.5 to 18 wt% of a C4-CIO a-olefin. Said polymer composition (A) is obtainable by way of chemical degradation of a precursor polymer composition (A) having MFR values (MFR (2)) of from 0.5 to 50 g/10 min, provided that the ratio of MFR (1) to MFR (2) be from 1.5 to 60. Propylene polymer composition (ii) as described above and non-woven fabrics that are prepared with the said fibres. The said fabric is useful for coverstock and diapers.