Method for the production of acrylic acid or its derivatives
US9505697B2 · kind B2 · utility
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6References
17Claims
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Nov 29, 2016 |
| Priority date | — |
| Expiry date | Jun 14, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530496
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for catalytically dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity and without significant conversion to undesired side products, such as, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed monophosphates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.