Patent ID: 9169578
Filing Date: 2015-10-27
Classification: D01F,D02J,D03D,D10B,Y10T

Abstract:
1. A liquid crystalline polyester fiber, wherein said fiber comprises a liquid crystalline polyester comprising the following structural units (I), (II), (III), (IV) and (V), and satisfies the following conditions 1 to 4: Condition 1: weight average molecular weight of the liquid crystalline polyester fiber determined through a polystyrene-equivalent weight average molecular weight is in a range of 250,000 or more and 1,500,000 or less; Condition 2: heat of melting (ΔHm Condition 3: single-fiber fineness of the liquid crystalline polyester fiber is 18.0 dtex or less; and Condition 4: strength of the liquid crystalline polyester fiber is 13.0 cN/dtex or more.