| 摘要 |
A surfactant composition is provided to show good fluidity at a wide range of temperature even though it contains a polyoxyethylene alkyl ether sulfate or an alkyl sulfate at high concentration, and be free from viscosity increase or gelation when being diluted, thereby being useful for preparing skin washing agents or hair washing agents. The surfactant composition comprises a polyoxyethylene alkyl ether sulfate or an alkyl sulfate represented by the formula(I) of R^1O(CH2CH2O)nSO3M, an alkylene oxide adduct of an alcohol represented by the formula(II) of R^2O-(AO)m-R^3, and a water-soluble salt and is characterized in that it contains more than 40 wt.% of the polyoxyethylene alkyl ether sulfate or alkyl sulfate represented by the formula(I) and has a viscosity of 1,000-70,000mPaÀs at 30 degree. In the formulae(I) and (II), R^1 is a saturated or an unsaturated C8-18 hydrocarbon, n is a number between 0 and 5, and M is an alkali metal, alkanol amine or ammonium, R^2 is a linear or branched C6-10 alkyl or alkenyl, AO is C2-4 oxyalkylene, m is a number between 1-3, and R^3 is H or methyl.
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