EP0011097B1 - Procédé de coloration électrolytique de couches produites par oxydation anodique sur l'aluminium - Google Patents

Procédé de coloration électrolytique de couches produites par oxydation anodique sur l'aluminium Download PDF

Info

Publication number
EP0011097B1
EP0011097B1 EP79103288A EP79103288A EP0011097B1 EP 0011097 B1 EP0011097 B1 EP 0011097B1 EP 79103288 A EP79103288 A EP 79103288A EP 79103288 A EP79103288 A EP 79103288A EP 0011097 B1 EP0011097 B1 EP 0011097B1
Authority
EP
European Patent Office
Prior art keywords
acid
tin
iron
sulfuric acid
electrolyte
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.)
Expired
Application number
EP79103288A
Other languages
German (de)
English (en)
Other versions
EP0011097A3 (en
EP0011097A2 (fr
Inventor
Erich Dr. Ruf
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.)
Evonik Operations GmbH
Original Assignee
TH Goldschmidt AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6055052&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0011097(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by TH Goldschmidt AG filed Critical TH Goldschmidt AG
Priority to AT79103288T priority Critical patent/ATE87T1/de
Publication of EP0011097A2 publication Critical patent/EP0011097A2/fr
Publication of EP0011097A3 publication Critical patent/EP0011097A3/xx
Application granted granted Critical
Publication of EP0011097B1 publication Critical patent/EP0011097B1/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/20—Electrolytic after-treatment
    • C25D11/22—Electrolytic after-treatment for colouring layers

Definitions

  • the invention relates to a process for the electrolytic coloring of anodic oxide layers produced on aluminum by means of direct current in acidic solution by means of alternating current using an acid electrolyte containing tin (II) salts and iron (II) salts.
  • the so-called electrolytic metal salt coloring a defined oxide layer is generated in the first process step using direct current with sulfuric acid or sulfuric acid and oxalic acid as the electrolytic liquid.
  • the aluminum thus anodized is then electrolytically colored in a second process step using alternating current and using solutions of certain metal salts or metal salt mixtures, tin (II) and iron (II) sulfate-containing solutions preferably being used here.
  • the invention has for its object to prevent the formation of precipitates when standing in the electrolytes used for coloring, which contain tin (II) salts, and at the same time to find electrolytes which enable the coloring to be obtained with the highest possible color intensity.
  • the hydrocarbon radical connected to the sulfur atom which may contain up to 8 carbon atoms, inclusive, does not play a decisive role.
  • the hydrocarbon radical can be an optionally substituted alkyl, aryl or alkaryl radical.
  • Example 2 The procedure was analogous to Example 1, with a solution containing 14 g of tin (II) sulfate, 16 g of conc. Contained sulfuric acid and 10 g of aminoethylethanolamine / I was used.
  • Example 2 The procedure was analogous to Example 1, with a solution containing 14 g of tin (II) sulfate, 16 g of conc. Containing sulfuric acid, 10 g phenolsulfonic acid and 5 g iron (II) sulfamate / I was used.
  • the brightness determined using the colorimeter was 15.8.
  • the amount of precipitation of 200 ml of this solution was 66 mg after standing for 1 week.
  • the brightness determined using the colorimeter was 16.5.
  • the amount of precipitation of 200 ml of this solution was 420 mg after standing for 1 week.
  • the brightness determined using the colorimeter was 13.8.
  • the amount of precipitation of 200 ml of this solution was 8 mg after standing for 1 week.
  • Example 2 The procedure was analogous to Example 1, with a solution containing 14 g of tin (11) sulfate, 16 g of conc. Contains sulfuric acid and 10 g cresolsulfonic acid / I was used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Secondary Cells (AREA)

Claims (3)

1. Procédé de colorage électrolytique de couches d'oxyde anodique formées sur l'aluminium au moyen d'un courant continu dans une solution acide, procédé utilisant un courant alternatif et un électrolyte acide contenant des sels d'étain(II) et des sels de fer(ll) et caractérisé par le fait que l'on utilise un électrolyte contenant 1 à 10 g/I d'un ou plusieurs sels de fer(II) d'un acide sulfonique qui contient au maximum 8 atomes de carbone ou de l'acide amidosulfonique.
2. Procédé selon la revendication 1, caractérisé par le fait que l'on utilise un électrolyte contenant du sulfosalicylate de fer(II) et/ou du sulfophtalate de fer(II).
3. Procédé selon la revendication 1, caractérisé par le fait que l'on utilise un électrolyte contenant en outre 1 à 10 g/I d'acide sulfosalicylique et/ou d'acide sulfophtalique.
EP79103288A 1978-11-18 1979-09-05 Procédé de coloration électrolytique de couches produites par oxydation anodique sur l'aluminium Expired EP0011097B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103288T ATE87T1 (de) 1978-11-18 1979-09-05 Verfahren zur elektrolytischen faerbung von auf aluminium erzeugten anodischen oxidschichten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2850136A DE2850136B2 (de) 1978-11-18 1978-11-18 Verfahren zur elektrolytischen Färbung von auf Aluminium erzeugten anodischen Oxidschichten
DE2850136 1978-11-18

Publications (3)

Publication Number Publication Date
EP0011097A2 EP0011097A2 (fr) 1980-05-28
EP0011097A3 EP0011097A3 (en) 1980-06-11
EP0011097B1 true EP0011097B1 (fr) 1981-06-17

Family

ID=6055052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103288A Expired EP0011097B1 (fr) 1978-11-18 1979-09-05 Procédé de coloration électrolytique de couches produites par oxydation anodique sur l'aluminium

Country Status (6)

Country Link
US (1) US4401525A (fr)
EP (1) EP0011097B1 (fr)
AT (1) ATE87T1 (fr)
BR (1) BR7906756A (fr)
DE (1) DE2850136B2 (fr)
DK (1) DK486579A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3718849A1 (de) * 1987-06-05 1988-12-15 Henkel Kgaa Elektrolytisches einfaerben von anodisiertem aluminium
DE3824403A1 (de) * 1988-07-19 1990-01-25 Henkel Kgaa Verfahren zur elektrolytischen metallsalzeinfaerbung von anodisierten aluminiumoberflaechen
GB9825043D0 (en) * 1998-11-16 1999-01-13 Agfa Gevaert Ltd Production of support for lithographic printing plate
EP3553208A1 (fr) * 2018-04-09 2019-10-16 DURA Operating, LLC Procédé de fabrication d'un composant en aluminium ayant une surface colorée

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5423662B2 (en) * 1975-03-05 1979-08-15 Yoshida Kogyo Kk Aruminiumu mataha aruminiumugokinno goorudoshokuhenodenkaichakushokuho
JPS5423663B2 (fr) * 1975-03-06 1979-08-15
JPS5296940A (en) * 1976-02-10 1977-08-15 Mitsui Keikinzoku Kako Electrolytic pigmentation process for aluminum or its alloy
JPS5318438A (en) * 1976-08-04 1978-02-20 Mitsui Keikinzoku Kako Process for forming electrolytic pigmentation coatings on aluminum and aluminum alloy
FR2384037A1 (fr) * 1977-03-17 1978-10-13 Nice Anodisation Sa Perfectionnement au procede de coloration electrolytique de l'aluminium et de ses alliages

Also Published As

Publication number Publication date
DE2850136B2 (de) 1981-01-22
US4401525A (en) 1983-08-30
EP0011097A3 (en) 1980-06-11
BR7906756A (pt) 1980-06-03
DE2850136A1 (de) 1980-05-22
ATE87T1 (de) 1981-07-15
DK486579A (da) 1980-05-19
EP0011097A2 (fr) 1980-05-28

Similar Documents

Publication Publication Date Title
DE2327764A1 (de) Verfahren zur elektrokoernung von aluminium
DE1446461B2 (de) Versiegelungsbad für anodisch oxydierte AlUDiiniumflächen, Verwendung desselben und Verfahren zum Versiegeln anodisch oxydierter Aluminiumflächen
DD284061A5 (de) Verfahren zur elektrolytischen metallsalzeinfaerbung anodisierter oberflaechen von aluminium und aluminiumlegierungen
DE2025284A1 (de) Verfahren zum elektrolytischen Einfärben von im voraus anodisch oxydiertem Aluminium
EP0011097B1 (fr) Procédé de coloration électrolytique de couches produites par oxydation anodique sur l'aluminium
DE2943049A1 (de) Loesung und verfahren zum elektroplattieren von chrom oder chromlegierungen
DE3102585C2 (de) Verfahren zur galvanischen Abscheidung von Chrom mittels eines dreiwertiges Chrom enthaltenden Bades
DE1947671C3 (de) Verfahren zum elektrolytischen Färben von anodisch oxidiertem Aluminium
DE2247840B2 (de) Galvanisches chrombad
DE2600216A1 (de) Verfahren und waessriges saures bad zur galvanischen abscheidung von zink
DE3327011A1 (de) Verfahren zum reinigen eines waessrigen dreiwertiges chrom enthaltenden elektrolyten
DE2921241A1 (de) Saurer zinn-ii-haltiger elektrolyt
EP0526497B1 (fr) Bains de nickelage acides, contenant 1-(2-sulfoethyl)-betaine de pyridinium
DE2251103B2 (fr)
DE1281219B (de) Verfahren zur anodischen Herstellung eines UEberzuges auf Metallen
EP0555244B1 (fr) Additif de l'electrolyte d'un bain colorant pour l'aluminium et procede de teinture de l'aluminium
DE2428635A1 (de) Verfahren und faerbeelektrolyt zum graufaerben von anodisch oxidierten gegenstaenden aus aluminium oder dessen legierungen
DE2208315C3 (de) Verfahren zum elektrolytischen Färben von anodisch erzeugten Oxidschichten auf Aluminium und Aluminiumlegierungen
DE1208593B (de) Saures galvanisches Nickelbad zum Abscheiden halbglaenzender UEberzuege
DE1621073B1 (de) Verfahren zum Färben von anodisch erzeugten Oxidfilmen auf Aluminiumgegenständen
DE3300317A1 (de) Verfahren zur galvanischen abscheidung von chrom
DE2723023A1 (de) Chromquelle fuer das elektroplattieren und deren herstellung und verwendung
DE3934866C2 (fr)
DE2251959C3 (de) Wäßriges Bad zum anodischen Erzeugen von gefärbten Oxidüberzügen auf Aluminium oder Aluminiumlegierungen
DE3139641A1 (de) "galvanisches bad und verfahren zur abscheidung halbglaenzender duktiler und spannungsfreier nickelueberzuege"

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL

17P Request for examination filed
ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH FR GB IT NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19810617

REF Corresponds to:

Ref document number: 87

Country of ref document: AT

Date of ref document: 19810715

Kind code of ref document: T

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: FIRMA KARL BIHLMAIER

Effective date: 19820317

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840627

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19840807

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840910

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19840930

Year of fee payment: 6

Ref country code: BE

Payment date: 19840930

Year of fee payment: 6

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19850624

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state
NLR2 Nl: decision of opposition
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

BERE Be: lapsed

Owner name: TH. GOLDSCHMIDT A.G.

Effective date: 19860930