Process for preparing foamed polymer
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United States of America Patent
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Sep 8, 2015
Grant Date -
Oct 10, 2013
app pub date -
Oct 17, 2011
filing date -
Oct 19, 2010
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Abstract
The invention pertains to a process for producing a glycerol tri-carboxylic acid polyester foam which comprises the steps of combining glycerol and a tri-carboxylic acid in the liquid phase to provide a reaction mixture, and keeping the reaction mixture at a temperature of between 80° C. and 130° C. from the start of the reaction until a conversion of at least 90% is obtained.
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