Catalysts for the conversion of hydroxypropionic acid or its derivatives to acrylic acid or its derivatives
US10106484B2 · kind B2 · utility
3Cited by
7References
1Claims
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Key dates
| Filing date | Feb 6, 2013 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jul 8, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530496
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed condensed phosphates. Methods of preparing the catalysts are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.