Method of recovering free fatty acids having low ester content and high acid value
US6623604B1 · kind B1 · utility
9Cited by
11References
33Claims
0Family size
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Key dates
| Filing date | Jun 5, 2000 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Dec 21, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11C1/103
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods of recovering free fatty acids having a low ester content from alkanol-containing solutions and oil mixtures containing tocopherols are disclosed which involve atmospheric or vacuum stripping at low temperatures. The recovered fatty acids have a high acid value, and have high commercial value in the production of high quality (high acid value) products, e.g., dimerized fatty acids, useful in polyamide resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.