SELF-ADHESIVE ELECTRODE PATCH

The present invention relates to a dispersion comprising i) particles A) of polymer comprising repeating units having the general structure €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ -CH 2 -CHR 1 -COOR 2 - wherein R 1 represent H or an alkyl group, and R 2 represents an optionally substituted C 1 -C 10 -alkyl group, wherein particles A) have a mass average particle diameter (d 50 ) of at least 500 nm; ii) particles B) of a conductive polymer, preferably particles B) of a complex of a cationic polythiophene and a polymeric anion, wherein the particles B) have a mass average particle diameter of less than 150 nm; iii) at least one dispersant, preferably water; wherein the weight ratio of the polymer in particles A) to the conductive polymer in particles B), preferably the weight ratio of the polymer in particles A) to the total weight of the cationic polythiophene and the polymeric anion in the complex of particles B) is at least 5 : 1. The present invention also relates to a layered body, to a process for the production of such a layered body, to a layered body obtainable by that process and to the use of a layered body for electrophysical measurements.