Catalytic process for converting oxazolidinones to their...

Details Catalytic process for converting oxazolidinones to their... Catalytic process for converting oxazolidinones to their...

C - Chemistry, Metallurgy

07

C

260/608.2

C07C 91/10 (1980.01)

Patent

CA 1172267

ABSTRACT OF THE DISCLOSURE A process for recovering amino alcohols, e.g., diisopropanolamine, from their corresponding cyclic reac- tion products resulting from the reaction of CO2 and the amino alcohol, i.e., exazolidinones, a situation commonly encountered in acid gas removal processes employing the amino alcohols alone or in combination with other liquids such as tetrahydrothiophene-1,1-dioxide. The cyclic prod- uct is reacted with a small but catalytic amount (less than about 10 mole percent) of a base metal compound such as the hydroxide or a base which will convert into a hydroxide under the conditions of reaction, i.e., the acid carbonates, carbonates, metaborates, oxides or hydrides, at temperatures above 105°C to about the atmos- pheric boiling point of the reaction medium. 27,285-F

380179

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