| 摘要 |
A phosphate-free, reductive bleach composition contains (a) a reductive bleach and (b) a bleach stabiliser selected from (b1) a citric acid derivative, (b2) a homo- or copolymer of ethylenically unsaturated mono- or dicarboxylic acids, (b3) a water-soluble magnesium salt and (b4) an alkali metal salt of tetraboric acid. The bleach composition is suitable for the reductive bleaching of vegetable, animal or synthetic fibres and of paper. High degrees of whiteness are achieved. At the same time, the composition is essentially environmentally compatible. |
