Abstract
Abstract and SummaryPolyoxyethyleneglycol (PEG‐600) monoesters of undecylenic, lauric, myristic, palmitic, stearic, oleic, ricinoleic and 12‐hydroxystearic acids were prepared in 80‐85% yield by reacting PEG with boric acid, esterifying the resultant borate with fatty acid, and selectively hydrolyzing the borate ester; their surface active properties were evaluated. Increase in acyl chain length increased the surface tension. The presence of a double bond or hydroxyl group in C18 series improved the wetting and emulsifying proper‐ties. Unsaturation in the fatty acid chain reduced the foaming power.
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