abstract |
(57) [Summary] (Modified) [Purpose] A fiber is treated by using 0.1 to 3.0% by weight of an ultraviolet absorber capable of reacting with a textile fiber, based on the fiber. A method of improving the SPF of a fiber is provided. The UV absorber has the formula AB. A is one of the following formulas (1), (2), (3) or (4); B is a group capable of reacting with the fiber. |