Patent ID: 8519191

Claim:
A synthesis method of 3-methylamino-1,2-propanediol, comprising the following steps: (a) adding glycerin chlorohydrin, an aqueous monomethylamine solution, and an NaOH solution and NaHCO 3 , into a reactor, stirring to mix the material, and allowing an amination reaction to proceed in two temperature stages; (b) treating an amination solution from the amination reation by removing monomethylamine and water from the amination solution after the amination reaction is completed, filtering out solid resultant, and feeding filtrate into a still; (c) heating the material in the still, and distilling under reduced pressure to obtain the product 3-methylamino-1,2-propanediol, wherein the vacuum for distillation under reduced pressure is equal to or greater than 0.099MPa and the temperature is 130-160° C.