TACK-FREE, HIGHLY ELASTIC MONO- AND MULTI-FIL POLYESTER/POLYURETHANE ELASTOMER FILAMENTS, A PROCESS FOR THE PREPARATION THEREOF BY MELT SPINNING AND THE USE THEREOF

摘要

Tack-free, Highly Elastic Mono- and Multi-fil Polyester/Polyurethane Elastomer Filaments, a Process for the Preparation Thereof by Melt Spinning and the Use Thereof of the disclosure The invention relates to tack-free, highly elastic mono- and multi-fil polyester/poly-urethane elastomer filaments which are manufactured by spinning a melt of a partially crosslinked thermoplastic polyurethane which is obtainable by reacting a) at least one organic, preferably aromatic, diisocyanate with b) at least one polyester diol having a molecular weight of from 500 to 5000, c) at least one difunctional hydroxyl group-containing chain extender having a molecular weight of from 62 to 380 and d) at least one at least trifunctional hydroxyl group-containing crosslinking agent, to a process for the manufacture thereof by a melt-spinning process and to the use thereof for the manufacture of fibers and flat textile articles.