Process for the preparation of polyglycerols

Details Process for the preparation of polyglycerols Process for the preparation of polyglycerols

1989-09-05

1990-11-27

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568679, 568680, 568699, C07C 4101, C07C 3770

Patent

active

049737635

ABSTRACT:
A process for preparation of polyglycerol is provided, comprising the steps of (a) reacting glycerol or diglycerol with hydrogen chloride at between about 340.degree. K. and about 410.degree. K. to yield a mixture that comprises an .alpha.-monochlorohydrin of glycerol or an .alpha.-monochlorohydrin of diglycerol, (b) mixing the .alpha.-monochlorohydrins and an alkali metal glycerolate or an alkali metal diglycerolate at a temperature of between about 320.degree. K. and 410.degree. K. to yield a mixture of alkali metal chloride and glycerol and/or diglycerol and polyglyerol, (c) separating the alkali metal chloride from the glycerols and (d) separating the polyglycerol from glycerol and/or diglycerol.

REFERENCES:
patent: 2520670 (1950-08-01), Wittcoff et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd edition, vol. 5, pp. 311-318, 1964.

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