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    • 4. 发明申请
    • BICOMPONENT FIBERS
    • 双色纤维
    • WO2011115702A1
    • 2011-09-22
    • PCT/US2011/023452
    • 2011-02-02
    • DOW GLOBAL TECHNOLOGIES LLC (FORMERLY KNOWN AS DOW GLOBAL TECHNOLOGIES INC.)CLAASEN, Gert J.DOMENECH, AngelsGUDMUNDSSON, Thor
    • CLAASEN, Gert J.DOMENECH, AngelsGUDMUNDSSON, Thor
    • D01F8/06D01F8/12D01F8/14
    • D01F8/06D01F8/12D01F8/14D04H3/147D04H3/16Y10T428/2907Y10T428/2929Y10T442/637
    • The present invention provides bicomponent fibers, a method of producing bicomponent fibers, nonwoven materials comprising one or more such bicomponent fibers, and a method for making such nonwoven materials. The bicomponent fibers according to the present invention comprise (a) a first component comprising a polymeric material selected from the group consisting of polypropylene, polyester, and polyamide; and (b) a second component comprising a polyethylene composition comprising less than or equal to 100 percent by weight of the units derived from ethylene; and less than 20 percent by weight of units derived from one or more α-olefin comonomers; wherein the polyethylene composition has a density in the range of from 0.945 to 0. 965 g/cm 3 , a molecular weight distribution (M w /M n ) in the range of from 1.70 to 3.5, a melt index (I 2 ) in the range of from 0.2 to 150 g/10 minutes, a molecular weight distribution (M z /M w ) in the range of from less than 2.5, vinyl unsaturation in the range of from less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition.
    • 本发明提供双组分纤维,生产双组分纤维的方法,包含一种或多种这种双组分纤维的非织造材料,以及制造这种非织造材料的方法。 根据本发明的双组分纤维包含(a)包含选自聚丙烯,聚酯和聚酰胺的聚合材料的第一组分; 和(b)第二组分,其包含包含小于或等于100重量%的衍生自乙烯的单元的聚乙烯组合物; 和少于20重量%的衍生自一种或多种α-烯烃共聚单体的单元; 其中所述聚乙烯组合物的密度范围为0.945至0.965g / cm 3,分子量分布(Mw / Mn)在1.70至3.5的范围内,熔体指数(I 2)在 0.2至150g / 10分钟,分子量分布(Mz / Mw)在小于2.5的范围内,乙烯基不饱和度在每一千个碳原子上小于0.1个乙烯基存在于所述组合物的骨架中。