以丁二酸和甲胺水溶液为原料,先合成N—甲基丁二酰亚胺,再经电解还原得N—甲基—2—吡咯烷酮。经分离提纯,含量达99.5%以上,可满足液晶技术的使用要求。 Succinic acid and methylamine aqueous solution as raw materials, first synthetic N-methyl succinimide, and then by electrolysis to give N-methyl-2-pyrrolidone. After separation and purification, content of 99.5% or more, to meet the liquid crystal technology requirements.