Anhydrous diluents for the isobutylene oxidation reaction to methacrolein and methacrolein oxidation to methacrylic acid
US5155262A · kind A · utility
24Cited by
6References
12Claims
0Family size
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Key dates
| Filing date | Oct 23, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Oct 23, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/252
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The processes for oxidation of isobutylene to methacrolein and the oxidation of isobutylene to methacrylic acid in two stages with methacrolein as an intermediate are improved by use of essentially inert essentially anhydrous diluent gases to replace steam in the reaction streams. In particular, the uses of essentially inert essentially anhydrous diluents which raise the composite heat capacity of the diluent gas mixture to at least about 6.5 calories/(gram-mole) (.degree.C.) will improve selectivity to desired products and will reduce both the waste water load on the system and by-product formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.