EP0115020B1 - Bain galvanique acide de zinguage - Google Patents

Bain galvanique acide de zinguage Download PDF

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Publication number
EP0115020B1
EP0115020B1 EP83112804A EP83112804A EP0115020B1 EP 0115020 B1 EP0115020 B1 EP 0115020B1 EP 83112804 A EP83112804 A EP 83112804A EP 83112804 A EP83112804 A EP 83112804A EP 0115020 B1 EP0115020 B1 EP 0115020B1
Authority
EP
European Patent Office
Prior art keywords
zinc
brighteners
metal atom
surfactants
baths
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
EP83112804A
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German (de)
English (en)
Other versions
EP0115020A2 (fr
EP0115020A3 (en
Inventor
Norbert Dr. Greif
Knut Dr. Oppenlaender
Albert Dr. Hettche
Christos Dr. Vamvakaris
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.)
BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP0115020A2 publication Critical patent/EP0115020A2/fr
Publication of EP0115020A3 publication Critical patent/EP0115020A3/de
Application granted granted Critical
Publication of EP0115020B1 publication Critical patent/EP0115020B1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/22—Electroplating: Baths therefor from solutions of zinc

Definitions

  • the invention relates to an aqueous acidic galvanic zinc bath which, in addition to the customary additives such as conductive salts and brighteners, contains certain alkylphenol ethoxylates which are sulfonated and sulfated as surfactants.
  • FR-A-2 086 320 describes sulfated alkylphenol ethoxylates for use in galvanic zinc baths which contain other customary additives.
  • the aim of the invention was to find a class of surfactants which solubilize the brighteners used well and which, from acidic, galvanic zinc baths which contain the usual additives and also water-insoluble brighteners, can be used to obtain uniform and ductile zinc coatings on metallic substrates, even at low current densities.
  • aqueous acidic galvanic bath for the electrolytic deposition of zinc which contains conductive salts, brighteners and surfactants and is characterized by a content of a surfactant of the formula 1, as defined in claim 1, and the use of the compounds of the formula I. achieved as a surfactant in aqueous acidic galvanic baths for the electrolytic deposition of zinc in the presence of brighteners.
  • R 1 is preferably a C 4 - to C '5 -alkyl radical.
  • C 4 to C 9 alkyl radicals of which the butyl, tert-butyl, octyl and nonyl radicals are to be mentioned specifically.
  • n stands for an integer from 5 to 50, preferably 7 to 30.
  • the zinc can be electrolytically used in the bath.
  • an alkali metal ion especially the sodium or potassium ion, is preferably chosen as the metal ion.
  • the surfactants to be used according to the invention are therefore sulfonated and sulfated alkylphenol ethoxylates. They can be used individually or in mixtures with known surfactants. Non-ionic surfactants such as P — C 4 H 9 to C 12 H 25 alkylphenol ethoxylates with 10 to 30 ethylene oxide units or ⁇ -naphthol ethoxylates with 5 to 20 ethylene oxide units are particularly suitable as additional known surfactants. These are expediently used in an amount of 1 to 15 g / l.
  • the zinc baths usually contain brighteners.
  • the brighteners used can be divided into so-called basic brighteners and top brighteners.
  • Polyethyleneimines or their derivatives, for example, are expedient as basic gloss agents.
  • the top brighteners are usually poorly or not at all soluble in the aqueous zinc bath. These include representatives of the most diverse classes of substances, in particular certain aromatic or heteroaromatic ketones, as described, for example, in GB-A-1 149 106, JP-A-74 89 637.
  • R 3 is an aromatic or heteroaromatic radical, preferably an optionally alkyl, halogen or nitro substituted phenyl or thienyl radical and R 4 is C 1 -C 6 -alkyl, or crude products containing these compounds, and / or o-chlorobenzaldehyde.
  • This class of compounds includes representatives such as:
  • benzal acetone is preferred.
  • o-chlorobenzaldehyde can be used as a brightener alone or as a mixture with a compound of the formula II.
  • the zinc baths appropriately contain brighteners in a total amount of 1 to 10 g / l. They contain lace gloss agents in an amount of 0.1 to 2.0 g / l, preferably 0.1 to 1 g / l.
  • the surfactants to be used according to the invention are present in the baths in an amount of 4 to 30, preferably 5 to 15 g / l.
  • the baths have the usual compositions. They contain e.g. 50 to 150 g / l zinc chloride or the equivalent amount of zinc sulfate, 100 to 250 g / l potassium chloride (conductive salt), 15 to 25 g / l boric acid, 1 to 8 g / l sodium benzoate and optionally 1 to 4 g / l agent for Increase in scatter such as naphthalenesulfonic acid / formaldehyde condensation products. Other baths can also contain 10 to 160 g / l ammonium chloride or sodium chloride. The pH of the baths is usually between 3 and 6.
  • the baths according to the invention provide high-gloss and ductile zinc coatings over the entire current density range.
  • This bath corresponds to bath 1, but in addition to 10 g / l of the surfactant according to the invention it additionally contains 5 g / l of commercially available surfactant.
  • the sheets used are run for 10 minutes in a Hull cell with 1 ampere at room temperature (approx. 23 ° C).
  • an alkylated diphenyl ether disulfonate (commercial product) was used as the surfactant.
  • the cloud point of the bath at 5 g / l and 10 g / 1 surfactant was above 100 ° C.
  • test plate was run for 10 minutes in the Hull cell with 1 A at room temperature (approx. 23 ° C.).

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)
  • Cosmetics (AREA)

Claims (3)

1. Bain galvanique acide aqueux pour le dépôt électrolytique de zinc, contenant des sels conducteurs, des lustrants et des agents de surface, caractérisé en ce qu'il contient un agent ce surface de formule 1
Figure imgb0012
dans laquelle R1 représente un radical alkyle en C4 à C20, R2 un atome d'hydrogène, X et Y représentent chacun un radical de formule -S03H, l'atome d'hydrogène pouvant être remplacé par un atome de métal alcalin, un équivalent d'atome de métal alcalinoterreux ou par un equivalent d'atome de zinc métallique, et n est un nombre entier de 5 à 50.
2. Bain selon la revendication 1, contenant en tant que lustrant un composé de formule Il
Figure imgb0013
dans laquelle R3 représente un radical aromatique ou hétéroaromatique éventuellement substitué et R4 représente un radical alkyle en C1 à C6, et/ou l'o-chlorobenzaldéhyde.
3. Utilisation d'un composé de formule
Figure imgb0014
dans laquelle R1 représente un radical alkyle en C4 à C20, R2 un atome d'hydrogène, X et Y représentent chacun un radical de formule -S03H, l'atome d'hydrogène pouvant être remplacé par un atome de metal alcalin, un équivalent d'atome de metal alcalinoterreux ou par un équivalent d'atome de zinc métallique et n est un nombre entier de 5 à 50, en tant qu'agent de surface dans des bains galvaniques acides aqueux pour le dépôt électrolytique de zinc en présence de lustrants.
EP83112804A 1982-12-29 1983-12-20 Bain galvanique acide de zinguage Expired EP0115020B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3248503 1982-12-29
DE19823248503 DE3248503A1 (de) 1982-12-29 1982-12-29 Saures galvanisches zinkbad

Publications (3)

Publication Number Publication Date
EP0115020A2 EP0115020A2 (fr) 1984-08-08
EP0115020A3 EP0115020A3 (en) 1984-10-03
EP0115020B1 true EP0115020B1 (fr) 1987-04-08

Family

ID=6182076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112804A Expired EP0115020B1 (fr) 1982-12-29 1983-12-20 Bain galvanique acide de zinguage

Country Status (3)

Country Link
US (1) US4496439A (fr)
EP (1) EP0115020B1 (fr)
DE (2) DE3248503A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541906A (en) * 1984-05-21 1985-09-17 Omi International Corporation Zinc electroplating and baths therefore containing carrier brighteners
DE3432956A1 (de) * 1984-09-06 1986-03-13 Schering AG, 1000 Berlin und 4709 Bergkamen Sulfate und sulfoderivate der ss - naphtholpolyglykolaether und saure zinkbaeder enthaltend diese verbindungen
DE3613874A1 (de) * 1986-04-24 1987-10-29 Basf Ag Waessriges saures galvanisches bad
US5616232A (en) * 1994-09-28 1997-04-01 Nippon Steel Corporation Process for producing zinc-chromium alloy-electroplated steel plate
US6143160A (en) * 1998-09-18 2000-11-07 Pavco, Inc. Method for improving the macro throwing power for chloride zinc electroplating baths
JP6676550B2 (ja) 2014-07-04 2020-04-08 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ アルカリ性亜鉛メッキ用添加剤
CN107709627B (zh) 2015-06-25 2020-07-28 巴斯夫欧洲公司 用于碱性镀锌的添加剂
CN111118555A (zh) * 2020-01-17 2020-05-08 浙江金欣新材料科技股份有限公司 一种水溶性电镀光亮剂及其制备方法
PE20240150A1 (es) * 2021-05-20 2024-02-08 Basf Se Bano de galvanizacion de sulfonato, proceso de refinado de metal mediante deposicion electrolitica y proceso para controlar la morfologia de metales en el refinado electroolitico

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1521029C3 (de) * 1966-05-28 1984-01-19 Dr.-Ing. Max Schlötter GmbH & Co KG, 7340 Geislingen Saures galvanisches Glanzzinkbad
JPS4840543B1 (fr) * 1970-04-24 1973-12-01
GB1327303A (en) * 1971-03-23 1973-08-22 Cruickshanks Ltd M T Acidic zinc electroplating bath

Also Published As

Publication number Publication date
US4496439A (en) 1985-01-29
DE3370835D1 (en) 1987-05-14
DE3248503A1 (de) 1984-07-05
EP0115020A2 (fr) 1984-08-08
EP0115020A3 (en) 1984-10-03

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