Synthesis method for lauroyl-sodium methyl taurate

The invention discloses a high-conversion rate synthesis method for lauroyl-sodium methyl taurate. The high-conversion rate synthesis method comprises the following steps: mixing lauric acid with MgO, acetic acid and liquid paraffin; introducing nitrogen to replace air, heating to 100 DEG C to 110 DEG C and mixing for 5min; after heating, slowly dropwise adding N-sodium methyl taurate aqueous solution of which the mass fraction is 42 percent to 45 percent, controlling dropping speed so as to avoid the phenomenon that a large number of foams are generated from a reaction system and overflow, and continue to heat to 220 to 226 DEG C after the N-sodium methyl taurate aqueous solution is dropwise added and reacting for 4 to 5h; stop heating after the reaction is ended, and recovering. The high-conversion rate synthesis method disclosed by the invention is simple in process and easy in operation; the reaction time can be shortened, and the conversion rate (higher than 98 percent) of N-sodium methyl taurate is improved; after a crude product is recrystallized and dried, the purity of the crude product can reach more than 99 percent.