| 摘要 |
A stable concentrated liquid detergent composition comprises (a) at least one anionic detergent of formula RO(CnH2nO)mSO3M wherein R is an alkyl or alkylaryl radical in which the alkyl groups contain 6-18 carbon atoms, M is alkali metal, ammonium or substituted ammonium, n is 2 or 3, and m is 1-8, (b) an alkali metal condensed phosphate, suitably in an amount of 5-30% by weight of the composition, particularly sodium pyro- and/or tripoly-phosphate, and (c) a carboxymethylcellulose soil suspending agent, preferably sodium carboxymethylcellulose having a degree of substitution of 0.4-1.1. It is preferred that a further anionic detergent (d) be included, for example an alkyl sulphate, an alkylaryl sulphonate, or an acylated hydroxy-or amino-sulphonate, when the weight ratio of (a) to (d) is preferably 1:1 to 1:6; the total of (a) and (d) should be 5-25% by weight of the liquid composition. 1-5% by weight of sodium silicate having a ratio Na2O:SiO2 of 1:3.3 is preferably also included, and sodium carbonate, fatty acid alkanolamide, inorganic salts, optical brighteners, perfume and colour may also be incorporated. |
