Process for bleaching

Details Process for bleaching Process for bleaching

D - Textiles, Paper

21

C

8/76

D21C 9/10 (2006.01) C01B 17/66 (2006.01) D06L 3/10 (2006.01)

Patent

CA 1295440

Abstract Process for bleaching of materials, at which an aqueous solution of borohydride containing borohydride corresponding to from 15 to 35 percent by weight of sodium borohydride and hydroxylic ions corresponding to not more than 10 percent by weight of NaOH is brought to react with a bisulfite solution, after which the dithlonite solution thus obtained is added to the material to be treated. This process gives a simple and economic preparation of dithio- nite bleaching solution in situ, in connection with the bleaching.

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