| 摘要 |
<p>The present invention relates to liquid bleaching composition comprising a hypohalite bleach and an alkyl (alkoxy)n sulphate, with an average ethoxylation degree n ranging from 0.1 to 20, characterised in that said alkyl (alkoxy)n sulphate contains less than 10 % by weight of unsulfated material on the alkyl (alkoxy)n sulphate active basis and/or less than 0.0015 % by weight of heavy metal impurities on alkyl (alkoxy)n sulphate active basis and/or an amount of inorganic salts or alkali such as their contribution to the ionic strength of the alkyl (alkoxy)n sulphate raw material solution is of less than 0.5 moles/kg and/or less than 0.5 % bisulphite salts on alkyl (alkoxy)n sulphate active basis. These compositions exhibit excellent stain removal performance while delivering excellent chemical stability upon ageing.</p> |
