Biomass-resource-derived polyurethane, method for producing same, and biomass-resource-derived polyester polyol
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United States of America Patent
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Jul 19, 2016
Grant Date -
Feb 7, 2013
app pub date -
Oct 1, 2012
filing date -
Mar 31, 2010
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Abstract
The invention relates to a method for producing a biomass-resource-derived polyurethane, which comprises: reacting a dicarboxylic acid and an aliphatic diol to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, wherein the dicarboxylic acid contains at least one component derived from biomass resources, a content of an organic acid in the dicarboxylic acid is more than 0 ppm and not more than 1,000 ppm relative to the dicarboxylic acid, and a pKa value of the organic acid at 25° C. is not more than 3.7.
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