Process for the production of unsaturated carboxylic acids and/or esters
US4581471A · kind A · utility
16Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/353
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Unsaturated carboxylic acids and/or esters thereof are produced by reacting an aldehyde comprising formaldehyde or acetaldehyde with either a saturated carboxylic acid ester or anhydride in the vapor phase in the presence as catalyst of a high silica crystalline aluminosilicate zeolite in which the cation is H.sup.+ and/or a transition metal and/or a rare earth metal. In a modification of the process instead of formaldehyde there is used methanol/molecular oxygen and in the catalyst there is included either an oxidative or an oxidative/dehydrogenative component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.