Synthesis of sulfated polyhydroxy fatty acid amide surfactants
AssigneeThe Procter & Gamble Company
InventorJames C. Letton
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Abstract
Polyhydroxy fatty acid amide nonionic surfactants are converted in high yields to their sulfated analog surfactants using an SO.sub.3 /pyridine complex as a sulfating agent. Thus, C.sub.12 -C.sub.18 N-methyl glucamide is sulfated in methylene chloride or pyridine solvent to form the corresponding sulfated glucamide in yields of 80% or higher.
Claims2
A method for sulfating a polyhydroxy fatty acid amide, comprising contacting said polyhydroxy fatty acid amide with an SO.sub.3 /pyridine complex in a non-hydroxy solvent at a reaction temperature from about 25.degree. C. to about 35.degree. C. to produce a yield of at least about 80% of a sulfated polyhydroxy fatty acid amide.
Dependencies are inferred from the claim text.