Process for cleansing spent clay from the refining of glyceride esters
US4185026A · kind A · utility
1Cited by
5References
8Claims
0Family size
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Key dates
| Filing date | Sep 20, 1977 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Sep 20, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/74
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Elevated temperature process for deoiling spent crystalline clay from the refining of glyceride esters ("oils") wherein a primary dispersion of such spent clay and aqueous alkali are mixed under pH conditions effective for removing a substantial amount of oily phase from such clay in the form of glyceride esters, thus-treated clay is separated and redispersed with additional aqueous alkali under pH conditions effective for saponifying at least a substantial fraction of the remaining glyceride esters present, then the treated clay is separated from the redispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.