Method for manufacturing lactide
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United States of America Patent
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Sep 3, 2019
Grant Date -
Feb 1, 2018
app pub date -
Feb 11, 2016
filing date -
Feb 13, 2015
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Abstract
A method for producing lactide including the steps of: providing a solution of lactic acid in a volatile organic solvent, subjecting the solution to an evaporation step to remove volatile organic solvent and water, resulting in the formation of a composition including lactic acid oligomer, adding catalyst to the composition including lactic acid oligomer, and bringing the mixture to reaction conditions, to form lactide. It has been found that the process results in the efficient production of lactide with a high production rate and a good product quality.
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