Fibers and Nonwoven Materials Prepared Therefrom

摘要

Described herein are fibers, nonwoven fabrics, and other nonwoven articles comprising a blend of at least one propylene-based elastomer and an impact copolymer. The impact copolymer is a reactor blend and comprises a propylene homopolymer component and a copolymer component, where the copolymer component comprises less than about 55 wt % ethylene-derived units, based on the weight of the copolymer component.

主权项

1. A fiber comprising a blend of from about 30 to about 85 wt % of an impact copolymer and from about 15 to about 70 wt % of a propylene-based elastomer,
wherein the impact copolymer is a reactor blend and comprises a propylene homopolymer component and a copolymer component, where the copolymer component comprises less than 55 wt % ethylene-derived units, based on the weight of the copolymer component; and wherein the propylene-based elastomer comprises propylene and from about 5 wt % to about 25 wt % units derived from one or more C2 or C4-C12 alpha-olefins and has a MFR of greater than about 20 g/10 min and a heat of fusion less than about 75 J/g.