Alpha, beta-ethylenically unsaturated acids and derivatives thereof using a multicomponent acidic catalyst composition containing zirconium
US4739111A · kind A · utility
3Cited by
4References
7Claims
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Key dates
| Filing date | Sep 11, 1985 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Sep 11, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/353
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for preparing a catalyst composition wherein a Metal Hydrocarboxide I, such as aluminum secbutoxide, a Metal Hydrocarboxide II, such as zirconium butoxide, an acidic phosphorus-oxygen composition, such as phosphoric acid, and water, are reacted in the presence of a liquid organic medium, such as acetone, to form a catalyst precursor composition, which is then calcined to form the catalyst, is disclosed. The catalyst is useful for condensing carboxylic acids or their ester with aldehydes or acetals to synthesize .alpha. ,.beta.-ethylenically unsaturated acids or esters, such as methylmethacrylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.