GB1291627A - Processes and compositions for the derusting of ferriferous surfaces - Google Patents
Processes and compositions for the derusting of ferriferous surfacesInfo
- Publication number
- GB1291627A GB1291627A GB4028970A GB4028970A GB1291627A GB 1291627 A GB1291627 A GB 1291627A GB 4028970 A GB4028970 A GB 4028970A GB 4028970 A GB4028970 A GB 4028970A GB 1291627 A GB1291627 A GB 1291627A
- Authority
- GB
- United Kingdom
- Prior art keywords
- citric acid
- acid
- aug
- derusting
- phosphatising
- 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
Links
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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
1291627 Derusting AMCHEM PRODUCTS Inc 21 Aug 1970 [25 Aug 1969] 40289/70 Heading C7E A ferriferous surface is derusted by contact with an aqueous solution containing at least 2 wt% citric acid and is subsequently phosphatised by an essentially chromic acid-free phosphatising solution. Preferred amounts of citric acid are 5-25%, but solutions up to saturation (1 part acid: 0À75 parts water) may be used. A solution for the first step of the process is claimed which comprises at least 2 wt% citric acid and isopropanol or ethylene glycol monobutyl ether, the citric acid: water ratio being not more that 1:0À75. Where at least 5% citric acid is present, a conventional rust-remover such as H 3 PO 4 may be added. Optional ingredients are (a) 0À01 to 1À0% of surfactant, either non-ionic such as monylphenoxy polyethoxy ethanol or anionic, e.g. an alkylaryl sulphonate (b) an antifoam such as oleyl alcohol and (c) 0À05-2% of a thickener, e.g. methylcellulose, carboxymethyl cellulose polyoxyethylene, methylvinylether/meleic anhydride copolymer, guar gum, or gum arabic. Contact with the metal is for 2-5 minutes at 10-50‹C and the subsequent phosphatisation is, for example, zinc phosphatising preceded by an alkaline rinse.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85292269A | 1969-08-25 | 1969-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1291627A true GB1291627A (en) | 1972-10-04 |
Family
ID=25314568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4028970A Expired GB1291627A (en) | 1969-08-25 | 1970-08-21 | Processes and compositions for the derusting of ferriferous surfaces |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE755209A (en) |
CA (1) | CA924264A (en) |
DE (1) | DE2041871C3 (en) |
FR (1) | FR2059219A5 (en) |
GB (1) | GB1291627A (en) |
NL (1) | NL7012479A (en) |
SE (1) | SE354083B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0592906A1 (en) * | 1992-10-10 | 1994-04-20 | Caramba Chemie GmbH | Rim cleaning agent |
WO2012024680A1 (en) * | 2010-08-20 | 2012-02-23 | 3M Innovative Properties Company | Rust removing composition |
CN109371411A (en) * | 2018-12-10 | 2019-02-22 | 广东远见精密五金有限公司 | Process of surface treatment for electrolytic zinc-coated steel sheet, galvanized sheet, aluminium sheet or hot dipping zine plate |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2461612C3 (en) * | 1974-12-27 | 1981-08-20 | Hoechst Ag, 6000 Frankfurt | Rust-dissolving cleaning agents and a process for their production |
DE10346192B4 (en) * | 2003-10-02 | 2009-08-06 | Thyssenkrupp Presta Teccenter Ag | Method for rust removal of molded parts and use of the method |
-
0
- BE BE755209D patent/BE755209A/en not_active IP Right Cessation
-
1970
- 1970-01-19 CA CA072477A patent/CA924264A/en not_active Expired
- 1970-08-21 GB GB4028970A patent/GB1291627A/en not_active Expired
- 1970-08-24 DE DE19702041871 patent/DE2041871C3/en not_active Expired
- 1970-08-24 NL NL7012479A patent/NL7012479A/xx unknown
- 1970-08-25 SE SE1154970A patent/SE354083B/xx unknown
- 1970-08-25 FR FR7031096A patent/FR2059219A5/fr not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0592906A1 (en) * | 1992-10-10 | 1994-04-20 | Caramba Chemie GmbH | Rim cleaning agent |
WO2012024680A1 (en) * | 2010-08-20 | 2012-02-23 | 3M Innovative Properties Company | Rust removing composition |
CN102373478A (en) * | 2010-08-20 | 2012-03-14 | 3M创新有限公司 | Rust removal composition |
CN103069050A (en) * | 2010-08-20 | 2013-04-24 | 3M创新有限公司 | Rust removing composition |
CN109371411A (en) * | 2018-12-10 | 2019-02-22 | 广东远见精密五金有限公司 | Process of surface treatment for electrolytic zinc-coated steel sheet, galvanized sheet, aluminium sheet or hot dipping zine plate |
Also Published As
Publication number | Publication date |
---|---|
NL7012479A (en) | 1971-03-01 |
CA924264A (en) | 1973-04-10 |
SE354083B (en) | 1973-02-26 |
FR2059219A5 (en) | 1971-05-28 |
DE2041871C3 (en) | 1980-02-07 |
DE2041871B2 (en) | 1978-04-13 |
DE2041871A1 (en) | 1971-03-11 |
BE755209A (en) | 1971-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |