| 摘要 |
2136651 9324452 PCTABS00028 This invention relates to a process for preparing a surfactant composition comprising a secondary (C8 to C22) alkyl sulfate, which process comprises: a) sulfating a (C8 to C22) olefin and/or a (C8 to C22) secondary alcohol, optionally containing a primary alcohol, with a sulfating agent, b) neutralizing the sulfation product comprising alkyl sulfuric acid and dialkyl sulfate produced in step a) with a base in aqueous solution, c) heating the product of step b) to saponify the dialkyl sulfate and to remove substantially all of the water from the mixture, followed by either d) cooling the product of step c) in the presence of a nonionic organic liquid diluent to ambient temperature whereby a crystallized solid composition separates, and e) recovering and drying the crystallized solid composition of step d), or by f) contacting and mixing the product of step c) with a glycol in the presence of a nonionic organic liquid diluent, g) phase separating the lower phase from the mixture formed in step f) which contains the glycol and the composition; and the surfactant composition so prepared.
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