Process for cleansing spent clay
US4049685A · kind A · utility
4Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Feb 25, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/74
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for washing fatty acids from spent clay, such as spent bleaching clay, with aqueous alkali at elevated temperature is improved by establishing and maintaining the mixture of aqueous phase and fatty acid at a pH between about 5 and about 6.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.