EP2039810A3 - Method and devices for increasing the service life of a process solution for chemical-reductive metal coating - Google Patents

Method and devices for increasing the service life of a process solution for chemical-reductive metal coating Download PDF

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Publication number
EP2039810A3
EP2039810A3 EP08022592A EP08022592A EP2039810A3 EP 2039810 A3 EP2039810 A3 EP 2039810A3 EP 08022592 A EP08022592 A EP 08022592A EP 08022592 A EP08022592 A EP 08022592A EP 2039810 A3 EP2039810 A3 EP 2039810A3
Authority
EP
European Patent Office
Prior art keywords
process solution
coating
chemical
interfering
aid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08022592A
Other languages
German (de)
French (fr)
Other versions
EP2039810A8 (en
EP2039810A2 (en
Inventor
Alexander Schiffer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blasberg Werra Chemie GmbH
Original Assignee
Blasberg Werra Chemie GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Blasberg Werra Chemie GmbH filed Critical Blasberg Werra Chemie GmbH
Publication of EP2039810A2 publication Critical patent/EP2039810A2/en
Publication of EP2039810A3 publication Critical patent/EP2039810A3/en
Publication of EP2039810A8 publication Critical patent/EP2039810A8/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601—Process or apparatus
    • C23C18/1617—Purification and regeneration of coating baths
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • C25D21/14—Controlled addition of electrolyte components
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/16—Regeneration of process solutions
    • C25D21/22—Regeneration of process solutions by ion-exchange

Abstract

Die Erfindung betrifft ein Verfahren und Vorrichtungen zur Verlängerung der Nutzungsdauer einer Prozesslösung, die bei der chemisch-reduktiven Metallabscheidung verwendet wird. In dem Verfahren erfolgt die pH-Wert-Einstellung und die Nachdosierung der Ionen des Beschichtungsmetalls ohne störende Gegenionen durch Aufgabe der Prozesslösung, gegebenenfalls nach Verdünnung, auf mindestens einen mit Ionen des Beschichtungsmetalls beladenen schwachsauren Kationenaustauscher. Die Nachdosierung des Reduktionsmittels erfolgt entweder in einem Hilfskreislauf oder in eine verdünnte Prozesslösung. Bevorzugt werden aus dem Reduktionsmittel stammende störende Kationen mit Hilfe eines starksaueren Protonenbeladenen Kationenaustauschers und störende Anionen mit Hilfe eines schwachbasischen Anionenaustauschers abgetrennt. Bei der Metallabscheidung sich in der Prozesslösung anreichende störende Kationen werden bevorzugt mit Hilfe eines starksauren Protonen-beladenen Kationenaustauschers abgetrennt. Das Verfahren ermöglicht eine nahezu konstante Zusammensetzung der Prozesslösung mit geringem Fremdstoffgehalt. Dadurch wird eine besondere Qualität der Beschichtung bewirkt. Die Verlängerung der Nutzungsdauer der Prozesslösung steigert die Wirtschaftlichkeit und Umweltverträglichkeit der chemisch-reduktiven Metallbeschichtung.

Figure imgaf001
The invention relates to a method and apparatus for extending the service life of a process solution used in chemical-reductive metal deposition. In the process, the pH adjustment and the post-dosing of the ions of the coating metal without interfering counterions by abandonment of the process solution, optionally after dilution, to at least one loaded with ions of the coating metal weakly acidic cation exchanger. The redosing of the reducing agent takes place either in an auxiliary circuit or in a dilute process solution. Preference is given to removing interfering cations originating from the reducing agent with the aid of a strongly acidic proton-loaded cation exchanger and interfering anions with the aid of a weakly basic anion exchanger. In the case of metal deposition, interfering cations which accumulate in the process solution are preferably separated off with the aid of a strongly acidic proton-loaded cation exchanger. The process allows a nearly constant composition of the process solution with low impurity content. This causes a special quality of the coating. The extension of the useful life of the process solution increases the economic efficiency and environmental compatibility of the chemical-reductive metal coating.
Figure imgaf001
EP08022592A 2003-05-12 2004-05-12 Method and devices for increasing the service life of a process solution for chemical-reductive metal coating Withdrawn EP2039810A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003122120 DE10322120A1 (en) 2003-05-12 2003-05-12 Methods and devices for extending the service life of a process solution for chemical-reductive metal coating
EP04738516A EP1623058A2 (en) 2003-05-12 2004-05-12 Method and devices for increasing the service life of a process solution for chemical-reductive metal coating

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP04738516A Division EP1623058A2 (en) 2003-05-12 2004-05-12 Method and devices for increasing the service life of a process solution for chemical-reductive metal coating
EP04738516.6 Division 2004-05-12

Publications (3)

Publication Number Publication Date
EP2039810A2 EP2039810A2 (en) 2009-03-25
EP2039810A3 true EP2039810A3 (en) 2011-11-02
EP2039810A8 EP2039810A8 (en) 2011-12-14

Family

ID=33440894

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08022592A Withdrawn EP2039810A3 (en) 2003-05-12 2004-05-12 Method and devices for increasing the service life of a process solution for chemical-reductive metal coating
EP04738516A Withdrawn EP1623058A2 (en) 2003-05-12 2004-05-12 Method and devices for increasing the service life of a process solution for chemical-reductive metal coating

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04738516A Withdrawn EP1623058A2 (en) 2003-05-12 2004-05-12 Method and devices for increasing the service life of a process solution for chemical-reductive metal coating

Country Status (3)

Country Link
EP (2) EP2039810A3 (en)
DE (1) DE10322120A1 (en)
WO (1) WO2004101866A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004038693B4 (en) * 2004-08-10 2010-02-25 Blasberg Werra Chemie Gmbh Apparatus and method for removing foreign matter from process solutions and process for regenerating a cation exchanger
ES2698205T3 (en) 2005-11-25 2019-02-01 Macdermid Enthone Inc Procedure and device for the purification of process solutions
DE102008056776A1 (en) 2008-11-11 2010-05-12 Enthone Inc., West Haven Galvanic bath and method for the deposition of zinciferous layers
DE102018008312A1 (en) * 2018-10-22 2020-04-23 RIAG Oberflächentechnik AG Process for coating substrate surfaces, device with coating bath, density measuring device, removal device, adding devices and control
CN110880449B (en) * 2019-09-30 2022-07-19 王偲偲 Silicon wafer cleaning method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863612A (en) * 1987-08-10 1989-09-05 Kinetico, Inc. Apparatus and method for recovering materials from process baths
US5112392A (en) * 1991-06-21 1992-05-12 Martin Marietta Energy Systems, Inc. Recovery process for electroless plating baths
DE4310366C1 (en) * 1993-03-30 1994-10-13 Fraunhofer Ges Forschung Method for regenerating aqueous coating baths operating in an electroless manner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726969A (en) 1953-12-03 1955-12-13 Gen Motors Corp Chemical reduction plating process
US2726968A (en) 1953-12-03 1955-12-13 Gen Motors Corp Electroless nickel solution control
DE19851180C1 (en) * 1998-11-06 2000-04-20 Guv Ges Fuer Umweltvertraeglic Chemical reduction metal plating solution is regenerated using a weakly basic anion exchanger for hypophosphite ion recycle to the cathodic chamber of an electrodialysis cell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863612A (en) * 1987-08-10 1989-09-05 Kinetico, Inc. Apparatus and method for recovering materials from process baths
US4863612B1 (en) * 1987-08-10 1994-11-01 Kineticon Inc Apparatus and method for recovering materials from process baths
US5112392A (en) * 1991-06-21 1992-05-12 Martin Marietta Energy Systems, Inc. Recovery process for electroless plating baths
DE4310366C1 (en) * 1993-03-30 1994-10-13 Fraunhofer Ges Forschung Method for regenerating aqueous coating baths operating in an electroless manner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CLEAN PRODUCTS AND PROCESSES, vol. 2, no. 4, 2001, HEIDELBERG, pages 209 - 219, XP008041196 *

Also Published As

Publication number Publication date
EP2039810A8 (en) 2011-12-14
WO2004101866A3 (en) 2005-07-21
WO2004101866A2 (en) 2004-11-25
EP2039810A2 (en) 2009-03-25
DE10322120A1 (en) 2004-12-09
EP1623058A2 (en) 2006-02-08

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