Process for modifying glycol terephthalate polyesters to contain CH{HD 2{B {13 S or CH{HD 2{B {13 N linkages

摘要

Glycol terephthalate polyesters are modified to contain CH2-S or CH2-N linkages in molecular chains of the polyester, staple fibers of good strength are prepared from the modified polyesters, fabrics are prepared from the fibers and then treated with hypochlorous acid to develop pilling resistance. The treatment cleaves polyester molecules at the CH2-S or CH2-N links. Precise control is provided by the amount of modifier used and the relative viscosity of the fibers before the treatment.