Drying process of viscous solution containing (meth)acrylic acid-based polymer
AssigneeNippon Shokubai Co., Ltd.
InventorsTokihiro Yokoi, Keishi Tsuboi
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Abstract
A method of drying a viscous solution containing a (meth)acrylic acid-based polymer or copolymer containing (meth)acrylic acid and/or a salt thereof as a monomer unit, the degree of neutralization of the acid group contained in the polymer being not more than 50 mol %, wherein the method comprises subjecting the solution to, or passing the solution through, a drying zone, in the form of a line, so that the solvent in the solution is removed.
Claims14
A method of drying a viscous solution containing a (meth) acrylic acid-based polymer comprising a homopolymer or a copolymer containing (meth)acrylic acid and/or a salt thereof as a monomer unit, the degree of neutralization of the acid group contained in the polymer being not more than 50 mol %, wherein said method comprises subjecting said solution to, or passing said solution through, a drying zone, in the form of a line, so that the solvent in the solution is removed and wherein said viscous solution has a viscosity at 25.degree. C. of 100-1,000,000 cps.
Dependencies are inferred from the claim text.