2 50 g dry wt unrefined northern softwood kraft nsk pulp is dispersed in 500 ml tap water at ambient ph ca 7 5 5 0 0 984 g of the polycationic latex of example i is added to the pulp slurry and stirred for 30 minutes the handsheet is made on a standard deckle box using tap water at ambient ph ca 7 5 and dried on a drum dryer at 110 u00b0 115 u00b0 c the applicability of a polycationic latex as a wet strength additive for a continuous papermaking process is as follows approximately 220 kg dry weight of refined northern softwood kraft pulp is dispersed in water at the consistency of about 2 5 and kept in a stirred holding tank about 400 liters of cationic latex prepared according to example i are added to the pulp to achieve the wet end deposition of the binder the latex treated pulp is then fed to a pilot scale paper machine equipped with normal papermaking process components such as headbox forming wire and continuous dryer at a rate of about 80 l min the paper machine is operated at the production speed of 200 m min the latex content of the final paper products can be measured by x ray fluorescence analysis the analysis is done by brominating the unsaturated double bonds of a styrene butadiene rubber component of the latex and then measuring the x ray fluorescence intensity the estimated latex add on level for the sample measured by this method is on the order of 11 12 the wet strength of the latex containing paper product produced by a continuous pilot paper machine can be determined by measuring the tensile strength required to tear a one inch wide strip of.