Dewaxing process for vegetable oils
US4035402A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1975 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Sep 30, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to an improved process for dewaxing vegetable oils containing free fatty acid impurities, wax and other insoluble matter, which comprises: chilling a refined and water-washed or filtered vegetable oil, mixing the chilled vegetable oil with a dilute alkaline solution; gently agitating the resulting mixture, centrifuging the mixture and separating a heavy phase which contains wax and other impurities from a light phase which may then be bleached and deodorized to form a clear oil. The invention further relates to a reliable process for producing salad oils and other clear oils which remain clear at ambient to refrigerator temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.