Catalytic process for converting oxazolidinones to their corresp

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

1979-08-30

1981-07-28

Garvin, Patrick

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

548229, C07C 9104, C07C 5156

Patent

active

042812003

ABSTRACT:
A process for recovering amino alcohols, e.g. diisopropanolamine, from their corresponding cyclic reaction products, which products are the result of the reaction of CO.sub.2 and the amino alcohol, i.e., oxazolidinones, a situation commonly encountered in acid gas removal processes employing the amino alcohols alone or in combination with other liquids such as sulfolane (tetrahydrothiophene-1,1-dioxide) for example, by reacting the cyclic product with a small but catalytic amount (less than about 10 mol 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 about 105.degree. C. to about the atmospheric boiling point of the reaction medium and, optionally, recovering the amino alcohol from the reaction mass.

REFERENCES:
patent: 3658462 (1972-04-01), Van Scoy
patent: 4138468 (1979-02-01), Kettner et al.

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