Hydrogenation of residual monomers in partially polymerized acrylamide copolymers in latex form
AssigneeNalco Chemical Company
InventorsDodd W. Fong, Ronald J. Allain
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Abstract
A method of reducing the monomer content of water-in-oil emulsions of partially polymerized acrylamide polymers which comprises catalytically hydrogenating the monomer at a temperature not greater than 100.degree. C. and at a pressure below 500 psi.
Claims1
A method of reducing the acrylamide--sodium acrylate content of water-in-oil emulsions of partially polymerized acrylamide--sodium acrylate copolymers which contain not more than 50% by weight of sodium acrylate which comprises hydrogenating the acrylamide--sodium acrylate in the presence of a nickel hydrogenation catalyst utilizing a temperature ranging between 20.degree.-50.degree. C. and at a pressure between 100-150 psi.
Dependencies are inferred from the claim text.