Abstract: To improve the textile color fastness,dyeing dye workers to choose to improve on the process,but often the high processing costs or customer requirements also some gaps.And then fixing agent used to improve color fastness of textiles low cost, simple process.However,it has been in use prior to condensation of dicyandiamide with formaldehyde resin fixing agent as direct dyes,acid dyes cotton and silk fixing agent,fixing agent was found to in the finished high free formaldehyde content (> 200mg/kg),with its fixation of child underwear cause skin inflammation and even ulcers,great harm to human body,is now generally of formaldehyde-free fixing agent.This article first attempts to synthesize imidazole,then imidazole with epichlorohydrin as raw materials,synthetic imidazole fixative,then hydrogen peroxide oxidation,get free fixing agent.And to explore the reaction conditions,such as the length of reaction time,such as whether to join the crosslinking agent on the fixing agent solution viscosity.Finally,Tu 4 viscometer test fixative solution viscosity,and test Fixing fixing agent (washing) fastness.
Keywords：Formaldehyde-free fixing agent;Imidazole;Viscosity;Crosslinker;Cotton
