Process for the production of methacrylic acid
US4499302A · kind A · utility
2Cited by
6References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 11, 1980 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Feb 11, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/377
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Preparation of aliphatic alpha, beta-unsaturated carboxylic acids from the corresponding saturated acids by oxidative dehydrogenation, at a temperature between 250.degree. and 500.degree. C., in the presence of a catalyst of empirical formula: FeP.sub.x Me.sub.y Me'.sub.t O.sub.z wherein Me is at least one alkali or alkaline earth element, Me' is at least one element selected from the group consisting of Ni, Cu, Ce, Al, Zr, Hf and Pr, x is between 0.2 and 15, y is between 0.01 and 2, t is between 0.01 and 5 and z is such as to satisfy the valencies of the other elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.