Process for preparing methacrylic acid
US3998877A · kind A · utility
8Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1975 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Mar 31, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2523/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methacrylic acid is prepared by reacting methacrolein with molecular oxygen in the presence of a catalyst comprising (a) molybdenum, (b) phosphorus, (c) at least one element selected from the group consisting of thallium and cesium, (d) at least one element selected from the group consisting of vanadium, zirconium, tin, niobium, nickel, tantalum and iron, and (e) oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.