Aqueous composition, process for bleaching fiber materials containing cellulose, bleaching bath, fiber material containing cellulose, compounds and process for their production

摘要

Described is an aqueous composition comprising (a) a bleach-regulating component, (b) a magnesium salt of an organic carboxylic acid, and (c) a preservative. The present composition is suitable for use as a bleaching liquor for cellulosic fibre materials and is notable for a high stabilising effect, a high binding capacity for heavy metal ions, a good crystallisation-inhibiting effect and very good rewettability of the treated fibre materials. A significant advantage of the composition of the invention is its biodegradability. Also described are novel chitosan derivatives and the preparation thereof.