METHOD OF PREPARATION OF POLYESTER FILAMENT YARN HAVING THE DEEP COLOR

摘要

ester-exchange reaction between diol and dicarbonic acid or its ester, the initial stage of which is added by kaolines of average particle diameter 100-200 nm and addition amount 5.0-10 wt.% dispersed in ethylene glycol; condensation polymerizing, the initial stage of which is added by compds. shown in formula (I) [R1= organic group with valene 1; X= hydroxyl group; M= alkali metal or alkali earth metal; n1 = 0 or 1; R2=R3= cpd. contg. C1-8 aliphatic carbonized hydrogen; n2 = 1 or 2 and their addition amount 3.0-5.0 wt.%; spinning, weaving and alkali weight-reducing by conventional methods. The filament made by this method also features excellent touch and drapability.