Patent ID: 6576339
Filing Date: 2003-06-10
Classification: D01F,Y10T

Abstract:
Polyester staple fibres, consisting of&agr;) a polyester comprising at least 85 mol % of poly(C2-4-alkylene)terephthalate. &bgr;) from 0.1 to 2.0% by weight of an incompatible, thermoplastic, amorphous, polymeric additive having a glass transition temperature in the range from 90 to 1 70Â° C., and &ggr;) from 0 to 5.0% by weight of further additives, where the sum of &agr;), &bgr;) and &ggr;) is equal to 100%, the ratio of the melt viscosity of the polymeric additive &bgr;) to the melt viscosity of the polyester component &agr;) is form 1:1 to 10:1, and the polymeric additive &bgr;) is present in the staple fibres in the form of fibrils having a mean diameter of &lE;80 nm which are distributed in the polyester component &agr;).