Treatment of the waste from the production of tertiary butyl amine to recover sodium sulfate and methyl or sodium formate
US4131642A · kind A · utility
4Cited by
6References
9Claims
0Family size
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Key dates
| Filing date | Aug 12, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Aug 12, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01D5/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Isobutylene, hydrogen cyanide and sulfuric acid are reacted to produce tertiary butyl formamide, which is hydrolyzed by sodium hydroxide to produce tertiary butyl amine. The tertiary butyl amine is removed by vaporization and the residue is treated with sulphuric acid and methanol and is distilled to recover formate values as methyl formate or sodium formate. There is additionally recovered crystalline sodium sulfate and a water immiscible yellow organic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.