Maleic Anhydride → Dodecyl hydrogen maleate

Participants

Reaction Steps

Into an autoclave, were charged 295 parts of maleic anhydride, 570 parts of lauryl alcohol and 85 parts of toluene. The mixture was reacted at 60° C. for 5 hours under sealed condition, to obtain maleic acid monolauryl ester, containing 0.2% unreacted maleic anhydride. After adding to the mixture, 5 parts of sodium hydroxide, 275 parts of allyl chloride and 375 parts of triethyl amine, an atmosphere was substituted with nitrogen. The mixture was reacted at 80° C. for 8 hours, and cooled to a room temperature. The mixture was rinsed with 90 parts of 10% hydrochloric acid aqueous solution, followed by distillation of toluene under vacuum, to obtain 965 parts of lauryl allyl maleate of 98.6% purity and of Gardner Color 3. A molar ratio of maleic anhydride:lauryl alcohol was 1:1.02, and maleic acid monolauryl ester:allyl chloride:triethyl amine:formed water was 1:1.19:1.23:0.04.

Provenance & Evidence