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.
Claims13
1-37. (canceled)
A method for preparing a dispersion of 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 polymer.
A capacitor made by the process of:
- providing an anode with a dielectric thereon;
- forming a dispersion of conducting polymer by the method of claim 29;
- applying said dispersion of conducting polymer to said anode thereby forming a layer over said dielectric;
- and
- drying said layer.
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 polymer;
- providing an anode with a dielectric over said anode;
- and
- forming a cathode of said polymer on said dielectric.
Dependencies are inferred from the claim text.