Processes for making methacrylic acid
US9403749B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Apr 10, 2015 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Apr 10, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2523/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Processes are described for making methacrylic acid via methacrolein from a biobased isobutene, wherein the biobased isobutene is prepared from ethanol or from acetic acid in the presence of a ZnxZryOz mixed oxide catalyst, the biobased isobutene is oxidized to methacrolein and the methacrolein is further oxidized to methacrylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.