AGENT AND METHOD FOR REFINING AND BLEACHING

摘要

Provided are an agent and a method for refining and bleaching. The agent comprises components A, B and D. The weight ratio of component A to B is 80:20 to 30:70. Component D is selected from one or more of the following adducts: adduct of monohydric alcohol, di-alcohol or phenol with ethylene oxide with 65-85 wt% of ethyleneoxy, copolymerized adducts of monohydric alcohol, di-alcohol or phenol with C2-4 oxyalkylene with 45-70 wt% of ethyleneoxy and adducts of primary amine or secondary amine with C2-4 oxyalkylene with 55-70 wt% of ethyleneoxy. The agent for refining and bleaching can be used in the batch refining and bleaching method of fiber, and for solving the problem of non-uniformity of refining and bleaching of fiber packages.