ELASTIC POLYURETHANE-UREA FIBERS

摘要

Disclosed is a polyurethaneurea elastic fiber composed of a polyurethaneurea obtained by a reaction of a polymer diol, organic diisocyanate, bifunctional amine mainly consisting of 75% or more of ethylenediamine and a monoamine; and incorporated therein a specific alkylsulfonate or sulfate having a specific hydrocarbon groups containing carbon atoms ranging from 6 to 20. The polyurethaneurea elastic fiber can exhibit a high breaking strength and high elongation at break, and therefore, can produce a fine denier polyurethaneurea elastic fiber. The fiber can provide a converting processing of elastic fiber under a high draft and at a higher processing speed.