Discharging agent for synthetic type textile materials, discharge printing process manner and discharge printing processed synthetic type textile materials

摘要

PROBLEM TO BE SOLVED: To provide a dye-discharging agent by adding guanidine carbonate and an adsorbing substance, and to provide a method for discharging the dye of a synthetic fiber material, capable of giving the dye-discharged fiber material having excellent designability without discoloring a dye in a dye paste by printing the synthetic fiber material with a printing paste containing the dye- discharging agent and subsequently thermally treating the printed fiber material. SOLUTION: This dye-discharging agent for synthetic fibers contains guanidine carbonate and an adsorbing substance, such as activated carbon. The method for discharging the dye of a synthetic fiber material comprises printing the synthetic fiber material such as polyester yarns, polyamide yarns or the blend of the yarns with other yarns, with the printing paste and subsequently thermally treating the printed fiber material in a dry or wet state. The printing paste is prepared by adding the dye-discharging agent to an original paste so as to contain the guanidine carbonate in an amount of 0.1-50.0 wt.% based on the printing paste.