| 摘要 |
NEW MATERIAL:An ampholytic surface active betaine compound of formula I (R is 8-24C alkyl or alkenyl; R' is ethylene and/or propylene; n is a positive integer 1-50; R'' is <=5C alkyl). USE:Excellent ampholytic surfactants useful as an industrial detergent, shampoo, foaming agent and AE agent (growth stimulant), etc. PREPARATION:Ethylene oxide or propylene oxide or both are added to an 8- 24C higher alcohol, and the resultant addition product is then reacted with an epihalohydrin to give a compound of formula II (X is halogen), which is then reacted with an alkylamine, etc. to form a tertiary amine compound of formula III. The resultant compound of formula III is reacted with a monohalogenacetic acid at 50-100 deg.C to give the aimed compound of formula I . |
