GB2005720A - Aqueous bright tin electroplating baths - Google Patents

Aqueous bright tin electroplating baths

Info

Publication number
GB2005720A
GB2005720A GB7831047A GB7831047A GB2005720A GB 2005720 A GB2005720 A GB 2005720A GB 7831047 A GB7831047 A GB 7831047A GB 7831047 A GB7831047 A GB 7831047A GB 2005720 A GB2005720 A GB 2005720A
Authority
GB
United Kingdom
Prior art keywords
image
alkyl
formula
grouping
grams per
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.)
Granted
Application number
GB7831047A
Other versions
GB2005720B (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB2005720A publication Critical patent/GB2005720A/en
Application granted granted Critical
Publication of GB2005720B publication Critical patent/GB2005720B/en
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
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/30—Electroplating: Baths therefor from solutions of tin
    • C25D3/32—Electroplating: Baths therefor from solutions of tin characterised by the organic bath constituents used

Abstract

The invention provides acidic aqueous tin electroplating baths which contain bivalent tin ions and: (a) sulfuric acid and/or fluoboric acid, preferably in an amount of from 20 to 200 grams per litre, (b) from 1 to 20 grams per litre of a dispersing or emulsifying agent selected from non-ionic wetting agents derived from ethylene oxide or propylene oxide, or from cationic and ampholytic wetting agents derived from imidazoline, and (c) from 0.02 to 0.7 grams per litre of a dispersed brightener of the general formula (I> <IMAGE> wherein R1 represents a grouping of the formula (II) or (III> <IMAGE> in which X and Y, which may be the same or different, each represents a hydrogen or halogen atom or a hydroxy, alkyl or alkoxy group, R2 represents a hydrogen atom or an alkyl group, and R3, when R1 represents a grouping of the formula (II), represents <IMAGE> or, when R1 represents a grouping of the formula (III), represents <IMAGE> in which R4 represents an alkyl, phenyl, hydroxyphenyl, alkoxyphenyl, dialkoxyphenyl, alkylphenyl, pyridyl, alkylpyridyl or hydroxypyridyl radical and X'' and Y'', which may be the same or different, each represents a hydrogen or halogen atom or a hydroxy, alkoxy, alkyl, sulfoxy, carboxy, amino or amido group, or X'' and Y'' together represent a methylenedioxy group.
GB7831047A 1977-07-25 1978-07-25 Aqueous brighttin electroplating baths Expired GB2005720B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7722708A FR2398816A1 (en) 1977-07-25 1977-07-25 SHINY ELECTROLYTIC TINNING BATH

Publications (2)

Publication Number Publication Date
GB2005720A true GB2005720A (en) 1979-04-25
GB2005720B GB2005720B (en) 1982-02-10

Family

ID=9193735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7831047A Expired GB2005720B (en) 1977-07-25 1978-07-25 Aqueous brighttin electroplating baths

Country Status (2)

Country Link
FR (1) FR2398816A1 (en)
GB (1) GB2005720B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113957495A (en) * 2020-07-21 2022-01-21 宝山钢铁股份有限公司 Brightener for PSA (pressure swing adsorption) electrotinning insoluble anode system and application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113957495A (en) * 2020-07-21 2022-01-21 宝山钢铁股份有限公司 Brightener for PSA (pressure swing adsorption) electrotinning insoluble anode system and application

Also Published As

Publication number Publication date
FR2398816A1 (en) 1979-02-23
GB2005720B (en) 1982-02-10
FR2398816B1 (en) 1980-09-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee