Manufacturing method of water soluble polymer of ester of ethylene unsaturated carboxylic acid and poly- alkylene glycol

摘要

(57) Abstract In existence of the organic solvent which makes the azeotropic blend form which possesses the water ethylene unsaturated carboxylic acid, to azeotropic ester is converted with one end making use of the poly- alkylene oxide which 85 mass % the cap is done at least by the end group, the water soluble polymer of the ester of ethylene unsaturated carboxylic acid and poly- alkylene glycol is produced when the ester which it occurs continuously other ethylene unsaturated monomer and by together free radical making polymerize in water medium depending upon when, it removes the organic solvent from the reaction blend during the polymerization with azeotropic distillation, recycling the water which is removed by distillationThe method where it can point or it features that the water content which is removed or from the reaction blend by distillation is substituted with the supply quantity of the new water, produces the water soluble polymer of the ester of ethylene unsaturated carboxylic acid and poly- alkylene glycol.