| 摘要 |
PURPOSE:To provide a method for industrially easily producing a water-soluble (meth)acrylic acid polymer with high purity. CONSTITUTION:A water-soluble (meth)acrylic acid monomer, a polymerization initiator, and hypophosphorous acid (salt) are gradually introduced into an aqueous medium to polymerize the monomer by solution polymerization. The monomer is introduced in such an amount that the polymer concentration in the reaction mixture after polymerization will be 38-72wt.% in terms of the amount of the monomer converted to the polymer. The polymer thus obtained has far higher performance than conventional ones when used as a so-called water-treating agent such as a scale inhibitor or corrosion inhibitor and as a dispersant for inorganic pigments. |
