Process for preparing nonionic surfactants
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United States of America Patent
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-
Mar 3, 1992
Grant Date -
N/A
app pub date -
May 26, 1989
filing date -
May 30, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for preparing a nonionic surfactant includes the steps of: cleaving at least one of the isopropylidene groups of an isopropylidene polyglycerol C.sub.6 -C.sub.22 -fatty acid or mono- or polyhydroxy fatty acid ester, by hydrolysis or ketal exchange, in the presence of acid, at a temperature in the range of about 20.degree. C. to about 100.degree. C., and at atmospheric, reduced or superatmospheric pressure, thereby regenerating hydroxyl groups on the polyglycerol; and recovering the resultant polyol ester nonionic surfactant. Such polyol ester surfactants are useful as emulsifiers, especially for preparing skin care or cosmetic formulations and paints and wood-preservation agents.
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