Method of preparing phthalic anhydride
US4119645A · kind A · utility
10Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | Jul 20, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/573
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing phthalic anhydride by oxidation of o-xylene with air in which the reaction is self-sufficient in terms of energy and involves only low investment costs while providing a pure product in high yield in which the oxidation reaction is carried out in short tubes for minimum pressure drop over the reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.