Thermoplastic polyurethane self-crimping conjugate fiber and fabric

Abstract

Provided are a thermoplastic polyurethane (TPU) self-crimping conjugate fiber and a fabric. The TPU self-crimping conjugate fiber comprises: a first component including a first TPU and a second component including a second TPU, which is a TPU other than the first TPU. Wherein the first TPU has a damping factor (tanδ) peak within the temperature range from 20° C. to 100° C.; the second TPU has a tanδ peak within the temperature range from −50° C. to 70° C. Based on the total weight of the first component, the content of the first TPU is 50% by weight or more. The first TPU has a structural unit represented by Formula (I): wherein each R independently is an alkylene group having 2 to 8 carbon atoms or —CH2CH2OCH2CH2—; n is a number from 2 to 13; and the structural unit has a Mn ranging from 700 g/mole to 2500 g/mole.

Dependencies are inferred from the claim text.