Wool-like polyester filament and its manufacturing method

摘要

An object of the present invention is to provide a wool-like polyester filament and a method for producing the same. The method for producing wool-like polyester filaments is terephthalic acid, 1,4-butanediol, fluorine-containing dicarboxylic acid, hexanediol having tert-butyl, and 2,5,6,6-tetramethyl-2,5-heptanediol. Is uniformly mixed and further esterified, and the melt of the modified polyester to be polycondensed is made into a fiber by a method of semi-drawn yarn (Partially Oriented Yarn, POY) and drawn processed yarn (Draw Textured Yarn, DTY). That is. The obtained fibers had a dyeing rate of 90.32 to 93.27% at a dyeing temperature of 100 ° C., a dyeing performance of K / S value of 22.15 to 23.42, and a relative humidity of 25 ° C. and 65%. After being placed underneath for 60 months, it has a natural decomposition performance of 18 to 25% of the intrinsic viscosity decrease. The method provided in the present invention has a wide range of uses because the cost is low, the operation is convenient, and the provided product has good dyeing performance and fast natural biodegradation. [Selection diagram] Fig. 1