| 摘要 |
PURPOSE:To more surely stabilize the hygral.expansion of a protein fiber product without impairing the feeling and remove a sparingly water-soluble by-product produced by heat treatment. CONSTITUTION:The method for stabilizing the hygral.expansion of a protein fiber product comprises a step for dissolving a polyoxirane type derivative, having >=5wt.% water solubility and PEGDE expressed by formula I [(n) is 1-4] or PPGDE expressed by formula II in a solvent having 13.0-10.1 (cat/cm<3>) solubility parameter and the boiling point within the range of 101-190 deg.C and optionally mutually soluble in water and providing a water-soluble solution, a step for adding an aqueous solution containing at least >=2 or more catalysts for the oxirane compound selected from the group consisting of dicyandiamide, hydroxycarboxylic acids, thiocyanates and L-cysteines to the resultant solution and preparing a treating solution, a step for immersing the protein fiber product in the treating solution and then dehydrating the protein fiber product, a step for heat-treating the dehydrated protein fiber product, a step for subjecting the heat-treated protein fiber product to cross-linking reaction with the polyoxirane type derivative and a step for removing a by-product from the heat-treated protein fiber product. |
