| 摘要 |
PURPOSE:The reaction between an olefin, a carboxylic acid, and molecular exygen is conducted in the presence of a specific catalyst in liquid phase to produce continuously title compoud even in the zone where the concentration of alkylene glycol esters is very high in the reaction mixture. CONSTITUTION:The liquid reaction between an olefin of formula I (R<1-4> are H, alkyl or aryl) such as ethylene, a carboxylic acid of formual II (R<5> is alkyl or aryl) and molecular oxygen is conducted in the presence of a catalyst containing iodine simple substance, or an iodide liberating iodine such as iodohydrin, a nitrogen oxide giving NO<->2 such as nitric acid or notrogen minooxide and further sulfuric acid as a cocatalyst to produce alkylene glycol ester of formual III and IV. EFFECT:Smooth operations can be continued since the reaction rate and selectivity do not lower. USE:Solvents, starting material for polyester and antifreezer. |
