发明授权
- 专利标题： Control of disalt in .alpha.-sulfofatty acid ester surfactants
- 专利标题（中）： 控制α-磺基酸酯表面活性剂中的盐
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申请号： US753304申请日： 1985-07-10
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公开(公告)号： US4695409A公开(公告)日： 1987-09-22
- 发明人: Robert Piorr , Guenter Panthel , Karl H. Schmid , Dietmar Colignon , Hans J. Rommerskirchen , Wolfgang Schmidt , Horst Ritterbex
- 申请人： Robert Piorr , Guenter Panthel , Karl H. Schmid , Dietmar Colignon , Hans J. Rommerskirchen , Wolfgang Schmidt , Horst Ritterbex
- 申请人地址： DEX Duesseldorf
- 专利权人： Henkel Kommanditgesellschaft auf Aktien
- 当前专利权人： Henkel Kommanditgesellschaft auf Aktien
- 当前专利权人地址： DEX Duesseldorf
- 优先权： DEX3432324 19840903
- 主分类号： C07C309/17
- IPC分类号： C07C309/17 ; C07B45/02 ; C07C67/00 ; C07C301/00 ; C07C303/06 ; C07C303/32 ; C07C303/42 ; C07C303/44 ; C07C309/01 ; C07C309/22 ; C07C309/62 ; C11D1/28 ; C07C143/90
摘要：
In light colored surfactants produced by sulfonation of fatty acid alkyl esters with less than 2 moles of SO.sub.3 per mole of fatty acid alkyl ester and subsequent work-up of the crude sulfonate in aqueous medium to form salts, the content of .alpha.-sulfofatty acid disalts is regulated and reduced by transesterifying the sulfonation product before its treatment with an aqueous medium with at least about 0.5 mole equivalent of an alcohol, based on the SO.sub.3 which is not for .alpha.-sulfonation.
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