Process for beta-lactone production
First Claim
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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.
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Citations
92 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, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89)
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20. 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. - View Dependent Claims (90, 91, 92)
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Specification