| abstract |
(57) [Summary] [Purpose] Before dyeing or during dyeing, the higher-order structure of protein fibers is relaxed, and the fibers are swollen and easily dyed without impairing their physical properties. [Structure] A low-temperature dyeing agent for protein fiber products, in the presence or absence of a surfactant, has a donor number in the range of 24 to 50 and an acceptor number in the range of 10 to 24. It contains one or more freely miscible solvents in a proportion of 0.025 to 40 g per liter of water, and p H is 3.5 to 9.5. Tributoxyethyl phosphate may be added in an amount of 0.025 to 1 liter of water, if necessary. 1 or 2 which is contained at a rate of 4.0 g and / or has an enthalpy of hydration (-ΔH KJ · mol -1 ) of 200 to 290. 0.05 to 4 anions of 1 or more per 1 liter of water Included at a rate of 0 g. |