Dehydration of tertiary butyl alcohol
US4165343A · kind A · utility
10Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1978 |
| Grant date | Aug 21, 1979 |
| Priority date | — |
| Expiry date | Jul 28, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/025
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tertiary butyl alcohol is dehydrated in the presence of para-toluene sulfonic acid catalyst and xylene which forms an azeotrope with the water of hydration. Isobutylene and water, formed by the dehydration reaction, along with xylene, are removed as a vapor fraction. Xylene serves a dual purpose, acting as a solvent for paratoluene sulfonic acid so that this catalyst can contact the tertiary butyl alcohol feed, and also acting as an azeotrope forming agent to remove water as it is formed and to promote the dehydration reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.