Purification of glycolide
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United States of America Patent
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Mar 17, 1987
Grant Date -
N/A
app pub date -
Mar 19, 1986
filing date -
Mar 19, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the purification of glycolide which comprises dissolving the glycolide to be purified in a suitable organic solvent, adding alumina to the resulting solution to form a slurry wherein the alumina is in intimate contact with the dissolved glycolide, stirring the slurry under controlled conditions for a period of 1 to 60 minutes, and filtering to remove the alumina and, if desired, evaporating to remove the solvent and recovering the purified glycolide; and the production of suture-grade polyglycolic acid by the polymerization of the resulting purified glycolide.
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