申请人:Gallez Vincent B.
公开号:US10059081B2
公开(公告)日:2018-08-28
The present invention is directed to fibers, nonwoven fabrics, and nonwoven laminates comprising a blend of at least one impact copolymer and at least one propylene-based elastomer. The blends comprise from about 45 to about 85 wt % of an impact copolymer, where the impact copolymer comprises a blend of a propylene homopolymer and a copolymer comprising from about 20 to about 80 wt % propylene-derived units and from about 20 to about 80 wt % ethylene-derived units. The blends further comprise from about 15 to about 55 wt % of a propylene-based elastomer, where the propylene-based elastomer comprises from about 5 to about 25 wt % units derived from one or more C2 or C4-C12 alpha-olefins and has a triad tacticity greater than about 90% and a heat of fusion less than about 75 J/g.
本发明涉及由至少一种抗冲共聚物和至少一种丙烯基弹性体混合物组成的纤维、无纺布和无纺布层压板。混合物包括约 45 至约 85 重量百分比的抗冲共聚物,其中抗冲共聚物包括丙烯均聚物和共聚物的混合物,共聚物包括约 20 至约 80 重量百分比的丙烯衍生单元和约 20 至约 80 重量百分比的乙烯衍生单元。混合物还包括约 15 至约 55 重量%的丙烯基弹性体,其中丙烯基弹性体包括约 5 至约 25 重量%的衍生自一种或多种 C2 或 C4-C12 α-烯烃的单元,其三元触变性大于约 90%,熔融热小于约 75 焦耳/克。