Studies have been made on the conductivities of poly (methyl vinyl ketone-co-acryl amide) [poly (MVK-co-AAm)] s after having reacted with phosphorus oxychloride. It was found that the conductivities were dependent on the mol ratio of [AAm] to [MVK], copolymerization temperature, and time. The effect of treatment conditions of POCl3 on the conductivities of the poly (MVK-co-AAm)s was shown to be significant. It was observed that the conductivities of the poly(MVK-co-AAm)s, treated with POCl3, are of the order of 10(-6)-10(-9) Scm-1. The maximum conductivity of the POCl3-treated poly (MVK-co-AAm) was obtained as 8.7 X 10(-6) Scm-1 when the mol ratio of AAm to MVK was 0.5. The conductivity of the poly (MVK-co-AAm) was increased with the treatment time and concentrations of POCl3.