Method for rapidly producing amino methylated polymers and quaternary ammonium salts thereof

Abstract From the Canadian patent

An improved process for rapidly preparing amino methylated derivatives of dilute aqueous solutions of acrylamide polymers which comprises the steps:, A. Preparing a 2.8 - 6% aqueous solution of an acrylamide polymer which has a molecular weight of at least 500,000;, B. Adding to the solution formed in A approximately 1 mole of formaldehyde and approximately 1 mole of a dialkyl amine which contains from 2 - 4 carbon atoms based on the amide content of the acrylamide polymer under conditions of good agitation;, C. Reacting the acrylamide polymer with the formaldehyde and the dialkyl amine at a temperature between 80 - 100°C. for a period of time ranging between 2 - 15 minutes to form an amino …