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    POLYPROPYLENE FIBRES SUITABLE FOR SPUNBONDED NON-WOVEN FABRICS
    13.
    发明授权
    POLYPROPYLENE FIBRES SUITABLE FOR SPUNBONDED NON-WOVEN FABRICS 有权
    聚丙烯纤维热凝spunbondeds生产

    公开(公告)号：EP1543185B1

    公开(公告)日：2009-09-02

    申请号：EP03753461.7

    申请日：2003-09-23

    Applicant: Basell Poliolefine Italia S.r.l.

    Inventor： SARTORI, Franco ,  LONARDO, Angelo ,  HERBEN, Pierre

    IPC: D01F6/46 ,  D04H3/14 ,  C08L23/10

    CPC classification number: D04H3/16 ,  C08L23/142 ,  C08L2203/12 ,  C08L2205/02 ,  D01F6/46 ,  Y10T428/2913 ,  C08L2666/06

    Abstract: 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.

    FIBRES HAVING ELASTIC PROPERTIES
    14.
    发明授权
    FIBRES HAVING ELASTIC PROPERTIES 有权
    有弹性性能纤维

    公开(公告)号：EP1834015B1

    公开(公告)日：2008-11-19

    申请号：EP05823596.1

    申请日：2005-12-22

    Applicant: Basell Poliolefine Italia S.r.l.

    Inventor： SARTORI, Franco ,  GOBERTI, Paolo ,  DI PIETRO, Fabio

    IPC: D01F6/46

    CPC classification number: D01F6/46

    Abstract: Fibres exhibiting good elastic properties and made from a thermoplastic, elastomeric polyolefin composition comprising (percent by weight): (A) 10 to less than 50% of one or more crystalline propylene polymers selected from homopolymers of propylene and random interpolymers of propylene and one or more recurring units in amounts up to 10%, the recurring units being selected from ethylene and a C 4 -C 10 a -olefin, the polymer(s) being insoluble in xylene at room temperature in an amount higher than 80%; and (B) over 50 to 90% of a polymer fraction comprising one or more interpolymers of ethylene and at least one a-olefin of formula H 2 C=CHR 2 , where R 2 is a C 1 -C 8 linear or branched alkyl, containing from 13 to less than 60% of recurring units deriving from ethylene. The fibres are prepared by a process operating at a value of output per hole ranging from 5 to 15 g/min, the pressure in the extruder ranging from 15 to 30 bar, the temperature in the extruder head ranging from 200 to 300° C.

    FIBRES HAVING ELASTIC PROPERTIES
    16.
    发明公开
    FIBRES HAVING ELASTIC PROPERTIES 有权
    有弹性性能纤维

    公开(公告)号：EP1834015A1

    公开(公告)日：2007-09-19

    申请号：EP05823596.1

    申请日：2005-12-22

    Applicant: Basell Poliolefine Italia S.r.l.

    Inventor： SARTORI, Franco ,  GOBERTI, Paolo ,  DI PIETRO, Fabio

    IPC: D01F6/46

    CPC classification number: D01F6/46

    Abstract: Fibres exhibiting good elastic properties and made from a thermoplastic, elastomeric polyolefin composition comprising (percent by weight): (A) 10 to less than 50% of one or more crystalline propylene polymers selected from homopolymers of propylene and random interpolymers of propylene and one or more recurring units in amounts up to 10%, the recurring units being selected from ethylene and a C4-C10 α -olefin, the polymer(s) being insoluble in xylene at room temperature in an amount higher than 80%; and (B) over 50 to 90% of a polymer fraction comprising one or more interpolymers of ethylene and at least one α-olefin of formula H2C=CHR2, where R2 is a C1-C8 linear or branched alkyl, containing from 13 to less than 60% of recurring units deriving from ethylene. The fibres are prepared by a process operating at a value of output per hole ranging from 5 to 15 g/min, the pressure in the extruder ranging from 15 to 30 bar, the temperature in the extruder head ranging from 200 to 300° C.

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