Polymerization method for preparing conductive polymer
AssigneeKemet Electronics Corporation
InventorsAntony P. Chacko, Yaru Shi, John Ols
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Abstract
An improved process for preparing a conductive polymer dispersion is provided as is an improved method for making capacitors using the conductive polymer. The process includes providing a monomer solution and shearing the monomer solution with a rotor-stator mixing system comprising a perforated stator screen having perforations thereby forming droplets of said monomer. The droplets of monomer are then polymerized during shearing to form the conductive polymer dispersion.
Claims12
A method for preparing a dispersion of intrinsically conducting polymer comprising:
- providing a solution comprising a monomer and a polyanion;
- shearing said solution at a shear rate of at least 10,000 to no more than 800,000 sec−1 to form droplets;
- mixing said droplets with at least one oxidizing agent;
- polymerizing said monomer in said droplet to form said dispersion of said intrinsically conducting polymer.
A method of forming a capacitor comprising:
- providing a solution comprising a monomer and a polyanion;
- shearing said solution at a shear rate of 10,000 to 800,000 sec−1 to form droplets;
- mixing said droplets with at least one oxidizing agent
- polymerizing said droplets of said monomer to form a intrinsically conductive polymer;
- providing an anode with a dielectric over said anode;
- and
- forming a cathode of said intrinsically conductive polymer on said dielectric.
Dependencies are inferred from the claim text.