Method of preparing bio-polyols from epoxidized fatty acid esters
US10766841B2 · kind B2 · utility
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Key dates
| Filing date | Oct 24, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Oct 24, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2101/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of preparing bio-polyols from epoxidized fatty acid esters, wherein the bio-polyols are synthesized via hydroxylation with epoxidized fatty acid esters and ring-opening reagent, using the acidic ionic liquids as catalysts. The bio-polyols are used to synthesize bio-polyurethane and bio-polyurethane foams. The acidic ionic liquids in this process is used in esterification, epoxidation, and ring-opening reaction to synthesize bio-polyols. The ionic liquids catalysts have several advantages such as easy to separate, reusable, and may reduce pollution.
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