160 g maptac 50 aqueous solution 80 g acrylamide 50 aqueous solution 340 g deionized water 20 g isopropanol 0 5 g 2 2 39 azobis 2 amidinopropane hydrochloride and 0 2 g ethylenediamine tetraacetic acid disodium salt after nitrogen purging the reactor was immersed in a 50 u00b0 water bath for four hours to provide the polymer product the viscosity of a 0 5 solution of the polymer at 25 u00b0 was 11 8 cp an experiment identical to example 5 was performed except the isopropanol was replaced with deionized water the viscosity of a 0 5 solution of the polymer was 14 2 cp at 25 u00b0 c relative molecular weights were obtained on the polymers prepared in examples 1 6 by size exclusion liquid chromatography the column material was silica with an average pore size of 1 000 angstroms the silica was treated with an amino organosilane elution solvent was 0 1 n nitric acid polyacrylamide standards were used the approximate molecular weights are shown below for the instant polymers ______________________________________polymer of example molecular weight______________________________________1 1 million2 3 0 5 million4 1 7 million5 1 3 million6 1 7 million______________________________________ using standard emulsion polymerization techniques such as those found in u s pat no 4 152 200 comparative example a a gt 1 000 000 molecular weight co polymer.