PROCESS FOR PRODUCTION OF ACRYLATES FROM EPOXIDES

摘要

The methods of the present invention comprise the steps of: providing a feedstock stream comprising an epoxide and carbon monoxide; contacting the feedstock stream with a metal carbonyl in a first reaction zone to effect conversion of at least a portion of the provided epoxide to a beta lactone; directing the effluent from the first reaction zone to a second reaction zone where the beta lactone is subjected to conditions that convert it to a compound selected from the group consisting of: an alpha beta unsaturated acid, an alpha beta unsaturated ester, an alpha beta unsaturated amide, and an optionally substituted polypropiolactone polymer; and isolating a final product comprising the alpha-beta unsaturated carboxylic acid, the alpha-beta unsaturated ester, the alpha-beta unsaturated amide or the polypropiolactone.

主权项

1. A method for the synthesis of acrylic acid comprising the steps of:
providing a gaseous feedstock stream comprising ethylene oxide and carbon monoxide; directing the feedstock stream to a first reaction zone where it is contacted with a metal carbonyl compound and where at least a portion of the ethylene oxide is converted to a carbonylation product stream comprising beta propiolactone; directing the carbonylation product stream to a second reaction zone where it is contacted with a catalyst, which catalyzes the conversion of beta propiolactone to acrylic acid; withdrawing an acrylic acid product stream from the second reaction zone; and isolating acrylic acid from the product stream.