| 摘要 |
A new process for the preparation of an aqueous solution of a quaternary unsaturated ammonium salt of formula CH2=C(CH3)C(O)OCH2CH2N<+)<CH3)3.Cl<-)<I) by reaction under pressure and in the presence of water, N,N-dimethylaminoethyl methacrylate with methyl chloride as quaternising agent.The reaction takes place in the presence of a pentasodium salt of diethylene triamine penta-acetic acid. Also claimed are aqueous solutions (I) obtained by the process. |
