Process for the preparation of diglycerol and/or polyglycerol

Details Process for the preparation of diglycerol and/or polyglycerol Process for the preparation of diglycerol and/or polyglycerol

1992-09-25

1993-09-07

Mars, Howard T.

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

Organic compounds

Oxygen containing

568680, 568386, C07C 4101

Patent

active

052430863

ABSTRACT:
A process for the preparation of a composition containing diglycerol, in which process at least a stoichiometric amount of isopropylideneglycerol is reacted with .alpha.-monochlorohydrin in the presence of at least one alkaline compound at sufficient temperatures to yield an intermediate product composition containing monoisopropylidenediglycerol and a salt. Most of the salt and water formed is removed from the intermediate product composition, and any unreacted isopropylideneglycerol is removed by distillation. The remaining intermediate product composition containing monoisopropylidenediglycerol is subsequently reacted with water in the presence of at least one acidic catalyst at sufficient temperatures to yield a product composition containing diglycerol and acetone and substantially no cyclic glycerols.

REFERENCES:
patent: 4992594 (1991-02-01), Jakobson et al.

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