Patent ID: 9206144
Filing Date: 2015-12-08
Classification: C07C,C07D,C08G,Y02P

Abstract:
1. A continuous method of making a beta-propiolactone from ethylene oxide, the method comprising steps of: reacting, in a reactor, the contents of a feed stream comprising ethylene oxide, a solvent, a carbonylation catalyst and carbon monoxide to produce a liquid reaction product stream comprising beta-propiolactone and carbonylation catalyst; separating, outside the reactor, at least a portion of the beta-propiolactone in the reaction product stream from the carbonylation catalyst to produce: adding the liquid catalyst recycling stream to the feed stream; the method further comprising: treating the beta-propiolactone stream under conditions to convert the beta-propiolactone into a compound selected from the group consisting of acrylic acid, acrylates, acrylamide, and polyacrylates.