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A solution was prepared of 3.0 g of sodium dodecylsulfate in 300 mL of deoxygenated water. N-1-octylacrylamide, 0.597 g, was dissolved in this solution followed by 18.30 g of acrylamide, 19.38 g of DMA and 21.73 g of N-vinylpyrrolidinone (NVP). The resulting solution was carefully transferred to a 1 L Morton style resin kettle fitted with a chilled water condenser, thermometer, inert gas sparger and mechanical stirrer. The temperature was adjusted to 25 C. and polymerization was initiated by the addition of 0.108 g of 2,2'-azobis(N,N'--dimethylene-isobutyramidine) dihydrochloride. After stirring for 16 hr at 25 ±0.2 C., a 250 mL portion of the viscous solution was added to 3 L of acetone. The precipitated polymer was then masticated in a Waring blender with methanol/acetone, filtered and dried under vacuum at 30 C. The yield of polymer was 55.53 g. Other examples of these polymers are given in Table III.

1. customfitted with a chilled water condenser
2. customand polymerization
3. filtrationfiltered
4. customdried under vacuum at 30 C