Method for the polymerization of water soluble monomers
AssigneeRohm Co., Ltd.
InventorsPeter J. Arndt, Klaus Ross, Franz Wenzel
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Abstract
What is disclosed is a method for making a water soluble polymer of low molecular weight which forms aqueous solutions of low viscosity, which method comprises polymerizing an .alpha.,.beta.-unsaturated water soluble monomer or a mixture of such monomers in a concentrated aqueous solution of said monomer or mixture in the presence of a free radical forming initiator and of formic acid or a water soluble salt thereof as a chain transfer agent.
Claims5
A method for making a water soluble polymer of low molecular weight which forms aqueous solutions of low viscosity, which method comprises polymerizing an .alpha.,.beta.-unsaturated water soluble monomer or a mixture of such monomers selected from the group consisting of acrylic acid, methacrylic acid, the water soluble salts of acrylic acid and methacrylic acid, acrylamide, methacrylamide, the aminoalkyl esters of acrylic acid and methacrylic acid, and the salts and quaternization products of said aminoalkyl esters of acrylic acid and methacrylic acid, in a concentrated aqueous solution of said monomer or mixture in the presence of a free radical forming initiator and of formic acid or a water soluble salt thereof as a chain transfer agent.
Dependencies are inferred from the claim text.