Preparation of concentrated aqueous solutions of quaternization

Details Preparation of concentrated aqueous solutions of quaternization Preparation of concentrated aqueous solutions of quaternization

1983-11-30

1985-05-28

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

26050115, 560218, C07C 93193, C07C10370

Patent

active

045202109

ABSTRACT:
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.

REFERENCES:
patent: 3661880 (1972-05-01), Markert et al.
patent: 3948979 (1976-04-01), Patterson
patent: 4362890 (1982-12-01), Ohshima et al.

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