| 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. |
| Inventor: |
OHARA, Teruhiko (Tokyo, JP); SUZUKI, Naoki (Niigata, JP); NAKAJIMA, Yasuko (Kanagawa, JP); ITOU, Hiroto (Mie, JP); AOSHIMA, Takayuki (Kanagawa, JP); SUGAI, Naoki (Kanagawa, JP); MATSUMOTO, Takanao (Kanagawa, JP) |
| Applicant: |
Mitsubishi Chemical Corporation (Chiyoda-ku, JP) |
| Face Assignee: |
Mitsubishi Chemical Corporation (Chiyoda-ku, JP) |
| Filed: |
2019-05-16 |
| Issued: |
2019-08-29 |
| Claims: |
8 |
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US20190263960
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1. A method for producing a biomass-resource-derived polyurethane, the method comprising:
(4)
(5)
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