| 摘要 |
1,184,915. Sulphonated olefins. COLGATEPALMOLIVE CO. 3 May, 1967 [10 May, 1966], No. 20473/67. Heading C2C. [Also in Division C5] A process for the production of detergents containing alkenesulphonates and hydroxyalkanesulphonates comprises sulphonating at least one C 8-25α-olefin and neutralizing the product to produce an aqueous solution containing an anionically-active neutralized olefin sulphonic acid detergent and anionically inactive material insoluble in aqueous ethanol and soluble in pentane, and heating this reaction product at atmospheric pressure by contact with a heat transfer material, e.g. a hot gas or a heated surface with a temperature of at least 260‹ F. to raise its temperature to at least 230‹ F. and reduce its water content to 1-12%, this heat treatment being effective in decreasing the content of the said anionically inactive material. Builder salts may be added to the reaction product prior to the heat treatment.
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