Polyester fiber loss in quantity accelerator and alkaline loss in quantity treatment manner

摘要

PURPOSE: To obtain a thinning promoting agent for polyester fiber effective for promoting the alkali thinning of especially modified polyester and to promote the thinning of exclusively a modified polyester in the alkali thinning of a fiber structure composed of a modified polyester and an unmodified polyester with the thinning promoting agent. ;CONSTITUTION: This thinning promoting agent for polyester fiber is composed of a polyhydric alcohol ethylene oxide adduct obtained by adding ≥2mol of ethylene oxide to a polyhydric alcohol. An alkali thinning treatment is performed after impregnating the thinning promoting agent consisting of a polyhydric alcohol ethylene oxide adduct in a fiber structure composed of an unmodified polyester and a modified polyester obtained by copolymerizing 2-15mol% of a 3rd component to polyethylene terephthalate and heat-treating the impregnated product at ≥100°C.;COPYRIGHT: (C)1995,JPO