GB1300442A - Cleaning metal surfaces - Google Patents
Cleaning metal surfacesInfo
- Publication number
- GB1300442A GB1300442A GB913870A GB913870A GB1300442A GB 1300442 A GB1300442 A GB 1300442A GB 913870 A GB913870 A GB 913870A GB 913870 A GB913870 A GB 913870A GB 1300442 A GB1300442 A GB 1300442A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- sulphide
- hydroxyethyl
- replaced
- per cent
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (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)
Abstract
1300442 Cleaning compositions DOW CHEMICAL CO 25 Feb 1970 9138/70 Heading C7E A metal cleaning solution comprises 0À001 to 0À1 wt per cent of a water soluble sulphide, the sulphide (1) having a majority of molecules capable of releasing sulphide ions, (2) having no cations which will plate out on a clean ferrous metal surface (3) being safe to handle and (4) having a water solubility of at least 0À1% by wt in the cleaning solution; 0À5-40 wt per cent of an alkylene amine carboxylic acid of formula wherein n = 1-4, m = 0-4 and wherein up to two of the carboxymethyl groups may be replaced with a #-hydroxyethyl group and one or more of the carboxymethyl groups may be replaced by carboxyethyl groups; ammonia or alkili; and water. Typical sulphides are Na 2 S, K 2 S, (NH 4 ) 2 S, thioglycolic acid, dithioethanol or mercapto benzothiazole; typical acids are EDTA, N-hydroxyethyl ethylenediaminetriacetic acid, nitrilotriacetic acid, N-2-hydroxyethyl-iminodiacetic acid or diethyleneentriomine acetic-acid. The solution may have pH 7-11, may contain an inhibitor, and is used at 70-190‹C. to clean steel surfaces, particularly those contaminated with Cu.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB913870A GB1300442A (en) | 1970-02-25 | 1970-02-25 | Cleaning metal surfaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB913870A GB1300442A (en) | 1970-02-25 | 1970-02-25 | Cleaning metal surfaces |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1300442A true GB1300442A (en) | 1972-12-20 |
Family
ID=9866106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB913870A Expired GB1300442A (en) | 1970-02-25 | 1970-02-25 | Cleaning metal surfaces |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1300442A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2224750A (en) * | 1988-09-26 | 1990-05-16 | Fuji Xerox Co Ltd | Method for removing a selenium-containing layer from an electrophotographic photoreceptor |
-
1970
- 1970-02-25 GB GB913870A patent/GB1300442A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2224750A (en) * | 1988-09-26 | 1990-05-16 | Fuji Xerox Co Ltd | Method for removing a selenium-containing layer from an electrophotographic photoreceptor |
US5085732A (en) * | 1988-09-26 | 1992-02-04 | Fuji Xerox Co., Ltd. | Method for removing a selenium-containing layer from a electrophotographic photoreceptor |
GB2224750B (en) * | 1988-09-26 | 1992-12-02 | Fuji Xerox Co Ltd | Method for removing a selenium-containing layer from an electrophotographic photoreceptor |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES457440A1 (en) | Corrosion inhibitor for metal surfaces | |
GB1386746A (en) | Use of phosphorus compounds in controlling corrosion of metal parts | |
GB1244123A (en) | Corrosion inhibiting composition and a process of inhbiting corrosion of metal surfaces | |
ES8502169A1 (en) | Process for treating metal surfaces. | |
GB1503376A (en) | Solutions for cleaning surfaces of copper and its alloys | |
ES2531158T3 (en) | Fertilizer compositions containing chelated metal ions | |
GB1383798A (en) | Soap compositions | |
DK0491391T4 (en) | Water treatment agent | |
GB1379074A (en) | Removal of tubercles of corrosion from a metallic substrate and the inhibition of further corrosion thereon | |
GB1323061A (en) | Functional fluids and additives therefor | |
ES8206660A1 (en) | Process and product for the passivation of iron and steel surfaces. | |
BR8400398A (en) | PROCESS FOR MECHANICAL WORK OF CAST IRON AND A WATER CONCENTRATE TO BE USED IN THE PROCESS | |
GB935680A (en) | Corrosion inhibiting | |
GB1493583A (en) | Compositions and solutions thereof for removal of scale on metal surfaces | |
GB1533782A (en) | Use of n-acyl-1-aminoalkane-1,1-diphosphonic acids as complexing agents | |
GB1300442A (en) | Cleaning metal surfaces | |
ATE27971T1 (en) | SOLUTION AND PROCESS FOR THE CHEMICAL CONVERSION OF METALLIC SURFACES. | |
ATE56051T1 (en) | CORROSION INHIBITION COMPOSITIONS. | |
FR2034005A5 (en) | Rust and fur removing composition | |
DK289081A (en) | PROCEDURE FOR ACID CLEANING OF IRON AND IRON ALLOYES AND MEDICINE FOR CARRYING OUT THE PROCEDURE | |
GB1393302A (en) | Corrosion inhibitors for alkanolamine gas treating system | |
SE8306925D0 (en) | PROCEDED THE TREMPE D'ALLIAGES FERREUX AND ENVIRONMENTAL AQUEUX | |
GB1365227A (en) | Composition and method for removing copper containing iron oxide scales from ferrous metals | |
ES385559A1 (en) | Corrosion inhibiting cleaner for steel and ferrous metals | |
JPS5632593A (en) | Grinding agent |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |