PROCESS FOR ACRYLATE PRODUCTION
First Claim
1. A method for the production of an acrylate ester from ethylene oxide in a continuous flow process, the method comprising the steps of:
- a) contacting a process stream comprising ethylene oxide and an organic solvent with a carbonylation catalyst in the presence of carbon monoxide to provide a reaction stream containing beta propiolactone formed from the ethylene oxide;
b) applying the reaction stream containing the beta propiolactone to a nanofiltration membrane to produce;
i) a permeate stream comprising beta propiolactone and a first portion of the organic solvent, andii) a retentate stream comprising carbonylation catalyst and a second portion of the organic solvent; and
c) treating the permeate stream under conditions to convert the beta propiolactone into an acrylate ester.
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Accused Products
Abstract
Disclosed are methods for the continuous flow production of acrylic acid and derivatives thereof from an epoxide feedstock. In one embodiment, the method includes the steps of: contacting a process stream comprising ethylene oxide and an organic solvent with a carbonylation catalyst and carbon monoxide to provide a reaction stream containing beta propiolactone; applying the reaction stream containing the beta propiolactone to a nanofiltration membrane to produce a permeate stream containing beta lactone and a retentate stream containing carbonylation catalyst; and treating the permeate stream under conditions to convert the beta propiolactone into an acrylate ester. In some embodiments, the retentate stream is returned to the first step of the process where it is recharged with additional epoxide and passed through the sequence again.
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Citations
20 Claims
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1. A method for the production of an acrylate ester from ethylene oxide in a continuous flow process, the method comprising the steps of:
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a) contacting a process stream comprising ethylene oxide and an organic solvent with a carbonylation catalyst in the presence of carbon monoxide to provide a reaction stream containing beta propiolactone formed from the ethylene oxide; b) applying the reaction stream containing the beta propiolactone to a nanofiltration membrane to produce; i) a permeate stream comprising beta propiolactone and a first portion of the organic solvent, and ii) a retentate stream comprising carbonylation catalyst and a second portion of the organic solvent; and c) treating the permeate stream under conditions to convert the beta propiolactone into an acrylate ester. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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2. A method for the production of poly(3-hydroxy propionic acid) from ethylene oxide in a continuous flow process, the method comprising the steps of:
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a) contacting a process stream comprising ethylene oxide and an organic solvent with a carbonylation catalyst in the presence of carbon monoxide to provide a reaction stream containing beta propiolactone formed from the ethylene oxide; b) applying the reaction stream containing the beta propiolactone to a nanofiltration membrane to produce; i) a permeate stream comprising beta propiolactone and a first portion of the organic solvent, and ii) a retentate stream comprising carbonylation catalyst and a second portion of the organic solvent; and c) treating the permeate stream under conditions to convert the beta propiolactone into poly(3-hydroxy propionic acid).
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Specification