Glycolide purification process

Details Glycolide purification process Glycolide purification process

1991-06-03

1993-06-29

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31906

Patent

active

052236307

ABSTRACT:
A process for preparing suture-grade .beta.-glycolide by purifying crude glycolide which comprises contacting the crude glycolide with a primary solvent which will dissolve the crude glycolide and residual impurities without dissolving primary impurities; removing the primary impurities; recovering the glycolide and residual impurities by evaporating the primary solvent at a temperature below 42.degree. C.; removing residual impurities by washing the glycolide with a washing solvent in which the residual impurities are soluble; and isolating the .beta.-glycolide crystals which remain.

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Chemical Abstracts 102:95658g, "Purification of glycolide," abstract of Japan patent application 59-148,777 (1985).
Saunders, eta l., "Introduction into Organic Laboratory Techniques," 2nd ed., Saunder Publishing Co., pp. 481-488 (1982).

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