A kind of method of synthetic castor oil acid formicester ethoxylate sulfonates

A kind of method of synthetic castor oil acid formicester ethoxylate sulfonates is that castor oil acid formicester ethoxylate, sodium hydrogensulfite, catalyst, deionized water, low-carbon alcohols are added in reactor, and strong stirring, reacts 2 3h at 30 55 DEG C；Wherein the molar ratio of castor oil acid formicester ethoxylate and sodium hydrogensulfite is 1:1‑3.5；The dosage of catalyst is the 4.5 6.5% of castor oil acid formicester ethoxylation amount of substance, low-carbon alcohols, and the mass ratio of deionized water and castor oil acid formicester ethoxylate is 1 3.5：1‑3.5:1, after reaction, vacuum distillation removes water and low-carbon alcohols, is dissolved with excessive absolute ethyl alcohol, and heat filtering removes the salt in solution, and vacuum distillation removes ethanol and obtains product.The present invention has the advantages of reaction temperature is low, and the reaction time is short, high conversion rate.