| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for an aqueous suspension polymerization of vinyl chloride using dialkyl peroxydicarbonate, and a manufacturing process of a solution of dialkyl peroxydicarbonate suitable for the aqueous suspension polymerization of vinyl chloride. SOLUTION: The method for the aqueous suspension polymerization of vinyl chloride using dialkyl peroxydicarbonate, in which a manufacturing process of a solution of dialkyl peroxydicarbonate having a short alkyl chain is characterized by using this dialkyl peroxydicarbonate in the liquid state in liquid of dialkyl alkanedicarboxylate, being insoluble in water, for polymerization, which is characterized in that, in a first step, alkylhaloformate is reacted with an inorganic peroxide in the presence of an inorganic salt in water to produce dialkyl peroxydicarbonate having a short alkyl chain, and in a second step, this dialkyl peroxydicarbonate is extracted with a solvent which is insoluble in water. COPYRIGHT: (C)2010,JPO&INPIT |
