| 摘要 |
A process for quaternizing an imidazoline ester commpound, by: (a) forming an anhydrous melt of an imidazoline ester compound of the formula <CHEM> wherein R and R<1> are, independently, a C11-C21 hydrocarbyl group, preferably a C13-C17 alkyl group, and m and n are, independently, from 2 to 4 inclusive, preferably 2; (b) contacting said anhydrous melt with a quaternizing agent of the formula R<2>X or R<2>2X, wherein R<2> is an alkyl or benzyl group and X is a halide or sulfate, to form a liquid reaction mixture, said liquid reaction mixture being maintained free of lower alcohol solvents; and (c) maintaining said liquid reaction mixture under anhydrous conditions at a temperature ranging from 50 DEG C to 100 DEG C for a period of time sufficient for substantially all of said quaternizing agent to react with said imidazoline ester compound to form a quaternized imidazoline ester compound of the formula <CHEM> or mixtures thereof, wherein R, R<1>, R<2>, X, m and n are as defined in subparagraphs (a) and (b). |
