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Process for preparing concentrated aqueous solutions of quaternized products from tertiary amino alkyl esters or amides of acrylic or methacrylic acids
Process for preparing concentrated aqueous solutions of quaternized products from tertiary amino alkyl esters or amides of acrylic or methacrylic acids
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机译:由丙烯酸或甲基丙烯酸的叔氨基烷基酯或酰胺制备季铵化产物浓缩水溶液的方法
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摘要
Concentrated aqueous solutions of quaternization products of tertiary aminoalkyl esters or tertiary aminoalkylamides of acrylic or methacrylic acid are prepared by reaction of the corresponding esters or amides with an alkylating agent in a water-soluble ketone as solvent, by a process wherein, in order to isolate the quaternization product, an amount of water is added to the reaction mixture such that two phases form, and the lower aqueous phase, which contains the quaternization product in solution, is separated from the upper phase, which contains the ketone and residual alkylating agent.
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