METHOD FOR DYEING OF POLYARYLENE-1,3,4-OXADIAZOLE

摘要

A dyeing method of the polyarylene-1,3,4-oxadiazole fibers is provided to prevent an environmental problem from generating by means of dye with cation. The fiber is dyed by the cation dyestuffs. The polyarylene-1,3,4-oxadiazole fiber has a shape such as the sliver, spinning yarn or fabric. The cation dyestuff is at least one selected from a group consisting of cationic yellow 5GL, cationic yellow 3GL, cationic yellow GN, cationic G/Yellow GL, cationic orange GL(C.I.Basic Orange 21), cationic Brill. Red 4G, cationic pink FG, cationic red RP, cationic red GT, cationic red 5B, cationic red 6B, cationic red GRL, cationic blue BG, cationic blue BRL, cationic blue GRL, cationic navy blue BL, cationic black GLL, cationic black GH, cationic black 2GH. The cation dyestuff of 20 to 30% owf(one the weight of fiber) is used to the polyarylene-1,3,4-oxadiazole fiber. The dyeing is performed under the acid atmosphere of pH 4 to 5.