Polypropylene (pp) - caco3 masterbatch in fibers

Abstract

The present invention relates to a polypropylene-based masterbatch comprising from 15 to 35 wt.-%, based on the total weight of the polypropylene-based masterbatch, of a propylene polymer having a melt flow rate MFR (230° C., 2.16 kg), measured according to ISO 1133, in the range from 15 to 50 g/10 min, and from 65 to 85 wt.-%, based on the total weight of the polypropylene-based masterbatch, of a surface-treated filler material product comprising at least one ground calcium carbonate-comprising filler material, a polyester fiber composition comprising the polypropylene-based masterbatch, polyester nonwoven or filament formed from the polyester fiber composition, a process for preparing a polyester nonwoven or filament as well as the use of a polypropylene-based masterbatch in the production of a polyester nonwoven or filament and an article formed from a polyester nonwoven or filament.

Dependencies are inferred from the claim text.