Addition of polymers to thiophene monomers in the in situ polymerization

A process for the production of a capacitor, comprising the process steps:

• a) the provision of an electrode body of an electrode material, wherein a dielectric covers one surface of this electrode material at least partly to form an anode body;
• b) the in situ polymerization of at least one thiophene monomer in at least a part of the anode body in the presence of at least one oxidizing agent and at least one polymer, wherein the polymer has the structural formula (I)
• R1O—R2nO—R1 (I)
• in which
• n is an integer ≧3;
• the radicals R2 within the structural formula (I) can be identical or different and represent an alkylene group optionally containing a hydroxyl group or a polyether group;
• the radicals R1 within the structural formula (I) can be identical or different and represent a hydrogen atom, a C1-C10-alkyl group, an unsaturated C1-C10-alkylene group, an acryloyl group or a methacryloyl group, wherein at least one of the radicals R1 represents a C1-C10-alkyl group, an unsaturated C1-C10-alkylene group, an acryloyl group or a methacryloyl group;
• wherein a reaction solution comprising the at least one thiophene monomer, the at least one polymer having the structural formula (I), the at least one oxidizing agent and optionally one or more additives, which comprises the polymer having the structural formula (I) in a concentration of at least 1 wt. %, based on the total weight of the reaction solution, is employed for the in situ polymerization.