Method of producing unsaturated acid from salt of hydroxycarboxylic acid
US9309181B2 · kind B2 · utility
8Cited by
1References
18Claims
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Key dates
| Filing date | Feb 17, 2015 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Feb 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P7/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of producing an unsaturated acid from a salt of a hydroxycarboxylic acid, the method includes providing an aqueous solution including a salt of a hydroxycarboxylic acid; adding a solvent with a boiling point of 200° C. or higher to the aqueous solution; and heating the aqueous solution at a temperature lower than the boiling point of the solvent to split a salt from the salt of the hydroxycarboxylic acid while simultaneously dehydrating the hydroxycarboxylic acid, thereby converting the hydroxycarboxylic acid to the unsaturated acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.