carefully disperse the "carbopol" 941 resin in the water. when dispersion is complete, add the sodium hydroxide and then the amine. slowly add the "RT-8" tar in a thin, continuous stream (so that the rate of addition is no greater athan the rate of dispersion) width good mixing. note fairly high shear such as that provided by a medium-speed eppenbach homogenizer, forms the best, smallest droplet-size emulsion. excessively rapid addition of the tar results in a grainy emulsion.
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