Method of making acrylic acid from hydroxypropionic acid
US10723688B2 · kind B2 · utility
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2References
13Claims
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Assignee
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Key dates
| Filing date | Jun 11, 2019 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Jun 11, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/0295
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods for making acrylic acid, acrylic acid derivatives, or mixtures thereof by contacting a stream containing hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof with either an active catalyst containing an amorphous and partially-dehydrated phosphate salt or a precursor catalyst containing a crystalline phosphate salt in a reactor with a low corrosion rate are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.