The preparation and characterization of two novel polyimide, one from pyromellitic dianhydride (PMDA)-4,4 ' -oxydianiline (ODA) and the other from 3,3 ', 4,4 ' -benzophenone tetracarboxylic dianhydride (BTDA)-ODA, blend films with nylon 6 were reported earlier(1,2). PMBA-ODA and nylon 6 blend films have shown up to 14.7 % increase in Young's modulus and 25 % increase in tensile strength at lower elongation over those of control films, whereas the same films have shown around 4.6 % decrease in ultimate tensile strength (except the film PB 2 which shows about I % increase in ultimate tensile strength). BTDA-ODA and nylon 6 blend films have shown 19 % higher ultimate tensile strength as well as 42 % higher Young's modulus and 47 % higher tensile strength at lower elongation. But in general the dielectric constant of the blend films (both BTDA and PMDA based) measured at 23 degrees, 100 degrees and 200 degreesC and at 1,5 and 10 kHz frequency increases with increase in the percentage of nylon 6 in the blend and the breakdown voltage decreases with the increase in nylon 6 content in the blend films.