Polyacrylamide and polyacrylic acid polymers
AssigneeAmerican Cyanamid Company
InventorsPeter A. Jarovitzky, Roger E. Neff
Life of this patent
Estimating the term…
Abstract
The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its salts monomer to be polymerized to a polymer having improved performance characteristics and/or improved rates of polymerization. Optionally, urea is added with the methone.
Claims12
In a process for producing a water-soluble high molecular weight polymer by polymerizing a monomer selected from acrylamide, acrylic acid, 2-acrylamido-2-methylpropane sulfonic acid and its salts, or mixtures thereof, and drying the resulting polymer, the improvement comprising adding to said polymer, after polymerization and before drying, a cyclic organic compound which contains a 1,3-dione moiety of the formula:
- ##STR10##
Dependencies are inferred from the claim text.