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    METHOD AND ELECTROLYTE FOR ANODIC TREATMENT OF VALVE METAL
    1.
    发明专利
    METHOD AND ELECTROLYTE FOR ANODIC TREATMENT OF VALVE METAL 失效

    公开(公告)号：JP2000073198A

    公开(公告)日：2000-03-07

    申请号：JP15662899

    申请日：1999-06-03

    Applicant: KEMET ELECTRONICS CORP

    Inventor： MELODY BRIAN J ,  KINARD JOHN T ,  LESSNER PHILIP M

    IPC: C25D11/02 ,  C25D11/10 ,  C25D11/26 ,  H01G9/00

    Abstract: PROBLEM TO BE SOLVED: To obtain an electrolyte in which a high dielectric anodic oxidation film having almost no defect can be safely formed in infinite thickness by dissolving an acidic org. salt, an inorg. salt or the mixture of these in glycerin, controlling the soln. to a specified pH and heating it at a specified temp. to make it specified water content. SOLUTION: A soln. is prepared by dissolving an acidic org. salt or inorg. salt such as sodium p-toluenesulfonate, potassium hydrogen sulfate in glycerin, controlling the soln. to pH =150 deg.C to make the water content to =150 deg.C. The soln. is used as an electrolyte and used for anodic treatment of valve metals, especially tantalum, preferably at >=150 deg.C. Thus, an anodic film having a high dielectric constant can be formed on the metal surface to the thickness almost proportional to a voltage maintaining time in accordance with an applied voltage and temp.

    POLYANILINE SOLUTION CONTAINING BICYCLIC TERPERNE SOLVENT
    3.
    发明专利
    POLYANILINE SOLUTION CONTAINING BICYCLIC TERPERNE SOLVENT 失效

    公开(公告)号：JPH11246822A

    公开(公告)日：1999-09-14

    申请号：JP34993098

    申请日：1998-12-09

    Applicant: KEMET ELECTRONICS CORP

    Inventor： MELODY BRIAN JOHN ,  KINARD JOHN T ,  LESSNER PHILIP M

    IPC: C09D5/24 ,  C09D7/12 ,  C09D179/02 ,  H01B1/12 ,  H01G4/06 ,  H01G9/07 ,  H01G9/15

    Abstract: PROBLEM TO BE SOLVED: To form a film of a polymer useful for the production of capacitors, etc., by using a solvent manifesting a lower drying temperature and a lower toxicity than those of a conventional solvent by coating an article with a solution prepared by dissolving an acid-doped polyaniline polymer in a specific solvent and evaporating the solvent. SOLUTION: An article which is a capacitive element preferably formed from a valve metal such as tantalum is coated with a solution containing about 10-20 wt.% of a polyaniline polymer doped with an acid (preferably dinonylnaphthalenesulfonic acid, etc.), and dissolved in a solvent (preferably a gum turpentine oil, etc.), containing at least one kind of bicyclic terpene and evaporating the solvent to form an electroconductive polymer film.

    METHOD OF AQUEOUS ANODIZING ALUMINUM SUBSTRATES FOR SOLID CAPACITORS
    4.
    发明申请
    METHOD OF AQUEOUS ANODIZING ALUMINUM SUBSTRATES FOR SOLID CAPACITORS 审中-公开
    用于固体电容器的阳极氧化铝基板的方法

    公开(公告)号：WO02073643A2

    公开(公告)日：2002-09-19

    申请号：PCT/US0205099

    申请日：2002-03-06

    Applicant: KEMET ELECTRONICS CORP

    Inventor： HARRINGTON ALBERT K ,  MELODY BRIAN J ,  KINARD JOHN T ,  LESSNER PHILIP M ,  WHEELER DAVID A

    IPC: C25D11/10 ,  C25D11/12 ,  C25D11/16 ,  C25D11/18 ,  H01G9/00

    CPC classification number: C25D11/10 ,  C25D11/12 ,  C25D11/16 ,  C25D11/18 ,  H01G9/0032

    Abstract: A method of anodizing an aluminum substrate comprising heating the substrate to a first temperature of 200 DEG C to about 380 DEG C; suspending the substrate into a first electrolyte and applying a first anodizing current to the first electrolyte; rinsing the substrate; heating the substrate to a second temperature of 200 DEG C to about 380 DEG C; and suspending the substrate into a second electrolyte and applying a second anodizing current to the second electrolyte, wherein the first electrolyte and second electrolyte each comprise an aqueous of at least one salt of alpha-hydroxy acid.

    Abstract translation: 一种阳极氧化铝基板的方法，包括将基板加热到第一温度为200℃至约380℃; 将衬底悬挂在第一电解质中并向第一电解质施加第一阳极氧化电流; 漂洗基材; 将基板加热至200℃至约380℃的第二温度; 以及将所述衬底悬挂在第二电解质中并向所述第二电解质施加第二阳极氧化电流，其中所述第一电解质和第二电解质各自包含至少一种α-羟基酸盐的水溶液。

    CHEMICAL OXIDATIVE PREPARATION OF CONDUCTIVE POLYMERS
    9.
    发明申请
    CHEMICAL OXIDATIVE PREPARATION OF CONDUCTIVE POLYMERS 审中-公开
    导电聚合物的化学氧化制备

    公开(公告)号：WO0236858A2

    公开(公告)日：2002-05-10

    申请号：PCT/US0132640

    申请日：2001-10-25

    Applicant: KEMET ELECTRONICS CORP ,  HAHN RANDOLPH S ,  LESSNER PHILIP M ,  MELODY BRIAN J ,  KINARD JOHN T

    Inventor： HAHN RANDOLPH S ,  LESSNER PHILIP M ,  MELODY BRIAN J ,  KINARD JOHN T

    IPC: B05D5/12 ,  B05D7/14 ,  H01B1/12 ,  C25D

    CPC classification number: B05D7/14 ,  B05D5/12 ,  B05D2350/00 ,  H01B1/127 ,  H01G11/48 ,  H01G11/56 ,  Y02E60/13

    Abstract: An intrinsically conductive polymer is prepared with a chemical oxidative process. The polymer is prepared by first dipping or coating a substrate with an Fe(III)-containing oxidizer solution and drying. The substrate is then dipped or coated with a monomer, such as 3,4-ethylenedioxythiophene solution and reacted to form the conductive polymer. The monomer is dissolved in a solvent in which it has a high solubility but in which the Fe(III)-containing oxidizer has low solubility. This minimizes cross-contamination of the monomer and oxidizer dipping solutions thereby making this process suitable for high volume production. Dissolving the monomer in a solvent allows control over the stoichiometric ration of monomer to oxidizer and prevents an excess of monomer thereby facilitating the removal of any unreacted monomer by water. The substrate is then dipped in an aqueous solution of para-toluenesulfonic acid to facilitate the removal of Fe(II) byproducts by enhancing their solubility in water and then the substrate may be washed with an aqueous solution of pure water. The process produces low ESR and low leakage valve metal capacitors with conductive polymer cathodes.

    Abstract translation: 用化学氧化法制备固有导电的聚合物。 通过首先用含Fe（III）的氧化剂溶液浸渍或涂覆基底并干燥来制备聚合物。 然后将基材浸渍或涂覆单体如3,4-亚乙基二氧噻吩溶液并反应形成导电聚合物。 将单体溶解在其溶解度高的溶剂中，其中含有Fe（III）的氧化剂具有低溶解度。 这使得单体和氧化剂浸渍溶液的交叉污染最小化，从而使得该方法适合于大批量生产。 将单体溶解在溶剂中允许控制单体对氧化剂的化学计量比，并防止过量的单体，从而便于通过水除去任何未反应的单体。 然后将底物浸入对甲苯磺酸的水溶液中以促进通过增加其在水中的溶解度来除去Fe（II）副产物，然后可以用纯水的水溶液洗涤底物。 该过程产生低导电聚合物阴极的低ESR和低泄漏阀金属电容器。

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