PRODUCTION OF ACETATE FIBER

摘要

PURPOSE:To provide adsorptive performance by impregnating acetate fibers in the soln. of a metallic solt in a polar org. solvent then impregnating the same in an aq. soln. of tannic acid. CONSTITUTION:Acetate fibers having <=10 denier monofilament size are immersed in a soln. prepd. by dissolving FeCl3 or the like in a polar org. solvent of ether, ethanol or the like. The fibers are dried to impregnate FeCl3 in the acetate fibers. The FeCl3 soln. is prepared to 0.3-10wt% concn., and about 1- 30hr is required as the time for immersion. The acetate fibers impregnated with FeCl3 are immersed in an aq. soln. of tannic acid to form iron tannate. The aq. soln. of tannic acid is prepd. of the aq. soln. of 3-20wt% concn.