首页>
外国专利>
Polyurethane knitted fabric dyeing process comprising the elastic fibers and elastic garments with knitted and the knitted fabric was dyed by the method stretchable clothing material
Polyurethane knitted fabric dyeing process comprising the elastic fibers and elastic garments with knitted and the knitted fabric was dyed by the method stretchable clothing material
PROBLEM TO BE SOLVED: To provide a knitted fabric excellent in stretchability, dimension stability, fitting property to the skin, and strength retention and rich in design.SOLUTION: There is provided a method for dyeing a knitted fabric that is knitted exclusively with a knitting yarn composed of a polyurethane-based elastic fiber. The polyurethane-based elastic fiber is obtained by a reaction of a polymer diol, a diisocyanate and a chain-extender, and includes a polymer containing a sulfonic acid group. The polyurethane-based elastic fiber is dyed with a cationic dye at 30°C or more and 130°C or less at least either before or after of knitting the knitted fabric.
展开▼
