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Preparation of L-lactide of polymerization purity with removal of impurities by fractional melting

Isolation and purification of L-lactide to reach the polymerization purity level with removal of impurities by fractional melting was studied. The process implementation was suggested, and the influence of various parameters on the rate and degree of impurity removal was examined. The optimum condit...

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Published in:	Russian journal of applied chemistry 2017-03, Vol.90 (3), p.415-422
Main Authors:	Konoplev, I. A., Kozlovskii, R. A., Shvets, V. F., Kuznetsov, A. E., Beloded, A. V., Kagramanov, G. G., Safronov, V. A., Yartym, A. I.
Format:	Article
Language:	English
Subjects:	Chemistry Chemistry and Materials Science Chemistry/Food Science Impurities Industrial Chemistry/Chemical Engineering Macromolecular Compounds and Polymeric Materials Melting Polymerization Purity
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description	Isolation and purification of L-lactide to reach the polymerization purity level with removal of impurities by fractional melting was studied. The process implementation was suggested, and the influence of various parameters on the rate and degree of impurity removal was examined. The optimum conditions for removal of the main impurities from L-lactide were found. The method allows preparation of L-lactide of polymerization purity in approximately 50% yield.
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subjects	Chemistry Chemistry and Materials Science Chemistry/Food Science Impurities Industrial Chemistry/Chemical Engineering Macromolecular Compounds and Polymeric Materials Melting Polymerization Purity
title	Preparation of L-lactide of polymerization purity with removal of impurities by fractional melting
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