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US 10,717,070 B2Granted
Catalysts for the dehydration of hydroxypropionic acid and its derivatives
AssigneeThe Procter & Gamble Company
InventorsJuan Esteban Velasquez, Dimitris Ioannis Collias, Jane Ellen Godlewski, Fred Christian Wireko
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Abstract
Hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof are dehydrated using a catalyst and a method to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the dehydration catalyst is also provided.
Claims18
A dehydration catalyst consisting essentially of one or more amorphous phosphate salts;
- wherein said one or more amorphous phosphate salts consist essentially of one or more monovalent cations, and one or more phosphate anions selected from the group represented by empirical formula (I):
- [H2(1−x)PO(4−x)]− (I);
- wherein x is any real number greater than 0 and less than 1;
- and
- wherein said one or more amorphous phosphate salts of said dehydration catalyst are neutrally charged.
2 more elements
Dependencies are inferred from the claim text.