Phosphate-free reduction bleaching formulation
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United States of America Patent
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Aug 20, 1996
Grant Date -
N/A
app pub date -
Aug 17, 1994
filing date -
Aug 20, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A phosphate-free reduction bleach formulation comprising (a) a reduction bleaching agent and (b) a bleach stabiliser selected from (b.sub.1) a citric acid derivative, (b.sub.2) a homo- or copolymer of an ethylenically unsaturated mono- or dicarboxylic acid, (b.sub.3) a water-soluble magnesium salt and (b.sub.4) an alkali metal salt of tetraboric acid. The bleach formulation is suitable for the reduction bleaching of vegetable, animal or synthetic fibres as well as paper. High degrees of whiteness are obtained. The formulation is substantially ecologically compatible.
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