TREATMENT OF POLYESTER-BASED STRETCH TEXTILE

摘要

PURPOSE:To provide the subject polyester-based dyed stretch textile excellent in wash-fastness and free from appreciable photo-deterioration. CONSTITUTION:A polyester-based stretch textile containing a polyether-polyester block copolymer elastic fiber is dyed with a readily hydrolyzable disperse dye and only the dye deposited on the elastic fiber is subsequently decolored by treatment in a reducing bath composed of an alkali, a reducing agent and a swelling agent for a fiber followed by treatment with a benzotriazole-based ultraviolet absorber. The embodiments include the treatment with a hindered phenol-based antioxidant during dying or after decoloring in the reducing bath.