Process for the production of fatty acid esters of hydroxyalkyl sulfonate salts
US4515721A · kind A · utility
17Cited by
22References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 1984 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Mar 13, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Fatty acid esters of hydroxyalkyl sulfonates are prepared by heating an excess of the fatty acids with the sulfonate until the water of condensation is removed. The hot crude ester is then quenched by immersion in an excess of cooled liquid, in which the ester product is soluble but in which unreacted, excess fatty acids are insoluble. The resulting slurry is filtered to separate the relatively pure ester from the quenching liquid containing dissolved free fatty acid. Isopropanol is the preferred quenching liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.