Method for obtaining polyunsaturated fatty acid derivatives
US8680305B2 · kind B2 · utility
2Cited by
4References
5Claims
0Family size
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Key dates
| Filing date | Sep 2, 2009 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Mar 26, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11C1/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of obtaining a polyunsaturated fatty acid derivative comprises contacting a mixture of fatty acid derivatives with a silver salt aqueous solution, and adjusting the free fatty acid content in the silver salt aqueous solution to 0.2 meq or less per gram of silver when repeatedly using the silver salt aqueous solution. A polyunsaturated fatty acid derivative having high purity and excellent quality can thus be economically obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.