telfon plastics glass or combinations thereof it comprises from 25 to 99 parts by weight of a poly prepolymer from 1 to 25 parts by weight of a trifunctional ester selected from the group consisting of trifunctional methacrylate ester trifunctional acrylate ester and mixtures thereof from 0 5 to 15 parts by weight of an organo reactive silane consisting of an amino group containing alkoxysilane having the formula nh 2 n si 3 where n is an integer from 1 to 20 and a conductive additive the invention also provides polymer coated substrates having a tenaciously bound polymer layer which is corrosion resistant has advantageous properties of conductivity and can be soldered application_number US 8753698 A description the polymeric coating composition of the present invention is comprised of three different monomeric units at least one poly amide imide prepolymer at least one trifunctional ester and at least one organo reactive silane the composition is formed by forming a mixture of monomers containing all three of the aforedescribed components broadly the mixture contains from 25 to 99 parts by wt of the poly amide imide prepolymer from 1 to 25 parts by wt of the trifunctional ester and from 0 5 to 15 parts by wt of the organo reactive silane desirably the mixture contains from 70 to 99 parts by wt of the poly amide imide prepolymer from 5 to 20 parts by wt of trifunctional ester and from 0 5 to 5 parts by wt of the organo reactive.