PROCESS FOR BETA-LACTONE PRODUCTION
First Claim
Patent Images
1. A method comprising steps of:
- reacting the contents of a feed stream comprising an epoxide, a solvent, a carbonylation catalyst and carbon monoxide to produce a reaction product stream comprising a beta-lactone;
separating at least a portion of the beta-lactone in the reaction product stream from the solvent and carbonylation catalyst to produce;
i) a beta-lactone stream comprising beta-lactone, andii) a catalyst recycling stream comprising carbonylation catalyst and solvent; and
adding the catalyst recycling stream to the feed stream.
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Abstract
The present application provides a method for producing an beta-lactone product. The method includes the steps of: reacting an epoxide, a solvent with a carbonylation catalyst and carbon monoxide to produce a reaction stream comprising a beta-lactone then separating a portion of the beta-lactone in the reaction stream from the solvent and carbonylation catalyst to produce: i) a beta-lactone stream with the beta-lactone, and ii) a catalyst recycling stream including the carbonylation catalyst and the high boiling solvent; and adding the catalyst recycling stream to the feed stream.
35 Citations
114 Claims
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1. A method comprising steps of:
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reacting the contents of a feed stream comprising an epoxide, a solvent, a carbonylation catalyst and carbon monoxide to produce a reaction product stream comprising a beta-lactone; separating at least a portion of the beta-lactone in the reaction product stream from the solvent and carbonylation catalyst to produce; i) a beta-lactone stream comprising beta-lactone, and ii) a catalyst recycling stream comprising carbonylation catalyst and solvent; and adding the catalyst recycling stream to the feed stream. - View Dependent Claims (2, 15, 16, 24, 28, 39, 42, 43, 44, 45, 46, 47, 62, 63, 78, 79, 80, 91)
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111. A method comprising steps of:
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reacting the contents of a feed stream comprising an epoxide, a solvent, a carbonylation catalyst and carbon monoxide to produce a reaction product stream comprising a beta-lactone; returning the entirety of the reaction product stream to the feed stream until the weight percent of beta-lactone in the reaction product stream is in a predetermined range;
then separating at least a portion of the beta-lactone in the reaction product stream from the solvent and carbonylation catalyst to produce;i) a beta-lactone stream comprising beta-lactone, and ii) a catalyst recycling stream comprising the carbonylation catalyst and the solvent; and adding the catalyst recycling stream to the feed stream.
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Specification