Process for synthesizing .alpha.,.beta.-ethylenically unsaturated products using a multicomponent acidic catalyst composition
US4560790A · kind A · utility
9Cited by
1References
25Claims
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Key dates
| Filing date | Aug 8, 1983 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Aug 8, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/353
- WIPO fieldOrganic fine chemistry
- 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 silicon ethoxide, 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.