C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
25/102, 402/465,
C09K 3/10 (2006.01) C04B 41/48 (2006.01) C04B 41/63 (2006.01) C08F 20/56 (2006.01)
Patent
CA 1338362
An aqueous soluton of acrylamide is mixed with an aqueous solution containing a polymerization trigger. Firstly at least one of the solutions contains a color indicator having a given color in the solution based on acrylamide and a different color in the solution contained in the trigger, and whose color changeover zone corresponds to the optimum proportions of the reagents in solution. Secondly, during mixing, the respective quantities of the two solutions are adjusted to occupy the changeover zone of the color indicator such that the mixture takes up the color corresponding to the color of the indicator in the solution based on acrylamide. The mixture preferably contains acrylamide, methylenebisacrylamide, and triethanol- amide glycol, using ammonium persulfate as the trigger and using bromophenol blue as the color indicator, with the color thereof disapearring after polymerization.
598035
Gosselin Claude
Sim & Mcburney
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