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Application US20190263960
Published 2019-08-29
Biomass-resource-derived Polyurethane, Method For Producing Same, And Biomass-resource-derived Polyester Polyol
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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- 1. A method for producing a biomass-resource-derived polyurethane, the method comprising:
reacting a dicarboxylic acid and an aliphatic dial to produce a polyester polyol; and reacting the polyester polyol and a polyisocyanate compound, to obtain the biomass-resource-derived polyurethane, wherein the dicarboxylic acid comprises at least one component derived from biomass resources, wherein 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 wherein a pKa value of the organic acid at 25° C. is not more than 3.7.
