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US 2026/0085029 A1Published application
Method for producing biobased alpha-beta-unsaturated carboxylic acids from poly(3-hydroxyalkanoate) contained in biomass
AssigneeArkema France
InventorsYves CABON, Akan ARAYICI, Jean-Jacques GESLOT
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Abstract
The present invention relates to a method for producing biobased α-β-unsaturated carboxylic acids from poly(3-hydroxyalkanoate) (P3HA) contained in biomass by extraction of the P3HA using a solvent, followed by separation of insoluble organic waste and then thermolysis of the P3HA-solvent mixture in the presence of the solvent. The solvent is selected such that it provides good dissolution of the P3HA and does not boil under the thermolysis conditions.
Claims21
A process for producing α,β-unsaturated carboxylic acids from biomass containing poly(3-hydroxyalkanoate) (P3HA), said process comprising the steps of:
- extracting P3HA from the biomass with a solvent capable of solubilizing P3HA to form a P3HA-solvent mixture,
- separating organic waste insoluble in said solvent from the P3HA-solvent mixture,
- thermolyzing said P3HA-solvent mixture to obtain said α,β-unsaturated carboxylic acid and recover said solvent.
Dependencies are inferred from the claim text.