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    • 9. 发明申请
    • SOFT AND EXTENSIBLE POLYPROPYLENE BASED SPUNBOND NONWOVENS
    • 柔软可伸缩的聚丙烯基弹性体非织造布
    • WO2007140163A3
    • 2008-04-24
    • PCT/US2007069374
    • 2007-05-21
    • DOW GLOBAL TECHNOLOGIES INCPENG HONGCLAASEN GERT JVAN DUN JOZEF JALLGEUER THOMAS T
    • PENG HONGCLAASEN GERT JVAN DUN JOZEF JALLGEUER THOMAS T
    • D04H3/153D01F1/10D01F6/46
    • D04H3/16D01F1/10D01F6/46Y10T442/608
    • The present invention relates to nonwoven webs or fabrics. In particular, the present invention relates to nonwoven webs having superior abrasion resistance and excellent softness characteristics. The nonwoven materials comprise fibers made from of a polymer blend of isotactic polypropylene and reactor grade propylene based elastomers or plastomers together with from 100 to 2500 ppm (by weight of the fiber) of a slip agent. The isotactic polypropylene can be homopolymer polypropylene, and/or random copolymers of propylene and one or more alpha-olefins. The reactor grade propylene based elastomers or plastomers have a molecular weight distribution of less than about 3.5, and a heat of fusion less than about 90 joules/gm. In particular, the reactor grade propylene based elastomers or plastomers contains from 3 to 15 percent by weight of units derived from an ethylene and a melt flow rate of from 2 to 200 grams/ 10 minutes. Erucamide is the preferred slip additive.
    • 本发明涉及非织造纤维网或织物。 特别地,本发明涉及非织造纤维网,其具有优异的耐磨性和优异的柔软性。 非织造材料包括由全同立构聚丙烯和反应器级丙烯基弹性体或塑性体的聚合物共混物以及100至2500ppm(重量比的纤维)滑爽剂制成的纤维。 全同立构聚丙烯可以是均聚物聚丙烯,和/或丙烯与一种或多种α-烯烃的无规共聚物。 反应器级丙烯基弹性体或塑性体的分子量分布小于约3.5,熔融热小于约90焦耳/克。 特别地,反应器级丙烯基弹性体或塑性体含有3至15重量%的衍生自乙烯的单元和2至200克/ 10分钟的熔体流动速率。 芥酸酰胺是优选的滑爽添加剂。