Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1986-03-19
1987-03-17
Fisher, Richard V.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
549274, 1283355, 210689, C08G 6302
Patent
active
046508511
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.
REFERENCES:
patent: 3297033 (1967-01-01), Schmitt et al.
patent: 3435008 (1969-03-01), Schmitt et al.
patent: 3442871 (1969-05-01), Schmitt et al.
patent: 3457280 (1969-07-01), Schmitt et al.
patent: 3463158 (1969-08-01), Schmitt et al.
patent: 3763190 (1973-10-01), Ross et al.
patent: 4387264 (1983-06-01), Bi
Matthews Richard S.
Rhum David
Dryer Mark
Fisher Richard V.
Knuth Charles J.
Peterson Jeffrey W.
Pfizer Hospital Products Group Inc.
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