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To a quart narrow-mouth glass bottle were added: 127.84 g. isooctyl acrylate, 8.6 g. acrylamide, 0.41 g. benzoyl peroxide, 237.6 g. ethyl acetate and 26.4 g. methyl alcohol. The solution was purged for two minutes with nitrogen at a flow rate of one liter per minute. The bottle was sealed and placed in a rotating water bath at 55° C. for twenty four hours to effect essentially complete polymerization. The polymer was diluted with ethyl acetate/methyl alcohol (90/10) to 28.4% solids and had a measured inherent viscosity of 1.02 dl/g. in ethyl acetate at a concentration of 0.15 g/dl. Its Brookfield viscosity was 9,120 centipoise.

1. additionTo a quart narrow-mouth glass bottle were added
2. customThe solution was purged for two minutes with nitrogen at a flow rate of one liter per minute
3. customThe bottle was sealed
4. waitplaced in a rotating water bath at 55° C. for twenty four hours
5. custompolymerization