Method for preparation of anhydrosugar alcohols
US9029578B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jun 2, 2011 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Jun 2, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/672
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is provided for the preparation of anhydrosugar alcohols. The method involves dehydration of a hexitol with a mixed acid of a first acid and second acid, in which the first acid is sulfuric acid and the second acid is at least one sulfur-containing acid or sulfur-containing acid salt selected from the group consisting of p-toluenesulfonic acid, methanesulfonic acid, ethanesulfonic acid, benzenesulfonic acid, naphthalenesulfonic acid and aluminum sulfate. Also provided are methods for purification of the resulting product.
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