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US 10,538,472 B1Granted
Extraction process for high-boiling aldehyde product separation and catalyst recovery
AssigneeDairen Chemical Corporation
InventorsJune-Yen Chou, Hsing-Yun Wang, Shih-Feng Chiu
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Abstract
The invention relates to an extraction process for the recovery of high-boiling aldehyde products and catalysts from a hydroformylation product solution.
Claims21
A process for separating a high-boiling point aldehyde compound from a non-aqueous hydroformylation product solution, comprising the steps of:
- (a) contacting the non-aqueous hydroformylation product solution with an aqueous extraction solvent to form a biphasic mixture, wherein the aqueous extraction solvent comprises at least one polyalcohol, at least one primary alcohol, and water;
- and wherein the non-aqueous hydroformylation product solution comprises the high-boiling point aldehyde compound, a hydroformylation catalyst, and a non-aqueous hydroformylation solvent;
- and
- (b) separating the biphasic mixture of step (a) to obtain:
- (i) a non-aqueous hydroformylation solvent layer, comprising:
- the hydroformylation catalyst, and the non-aqueous hydroformylation solvent;
- and
- (ii) an aqueous extraction solvent layer, comprising:
- the high-boiling point aldehyde compound, and the aqueous extraction solvent.
6 more elements
Dependencies are inferred from the claim text.