DE68903989D1 - METHOD AND COMPOSITION FOR CONTROLLING CORROSION IN SOFT OR HARD WATER. - Google Patents
METHOD AND COMPOSITION FOR CONTROLLING CORROSION IN SOFT OR HARD WATER.Info
- Publication number
- DE68903989D1 DE68903989D1 DE8989200969T DE68903989T DE68903989D1 DE 68903989 D1 DE68903989 D1 DE 68903989D1 DE 8989200969 T DE8989200969 T DE 8989200969T DE 68903989 T DE68903989 T DE 68903989T DE 68903989 D1 DE68903989 D1 DE 68903989D1
- Authority
- DE
- Germany
- Prior art keywords
- composition
- soft
- hard water
- controlling corrosion
- acid
- 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 - Fee Related
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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A method for inhibiting corrosion in aqueous systems comprising adding to the system being treated an effective amount of a composition comprising a molybdate ion source, a carboxylic acid/sulfonic acid polymer or salt thereof and polyphosphoric acid or an ester of polyphosphoric acid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18431988A | 1988-04-21 | 1988-04-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68903989D1 true DE68903989D1 (en) | 1993-02-04 |
DE68903989T2 DE68903989T2 (en) | 1993-06-03 |
Family
ID=22676422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8989200969T Expired - Fee Related DE68903989T2 (en) | 1988-04-21 | 1989-04-17 | METHOD AND COMPOSITION FOR CONTROLLING CORROSION IN SOFT OR HARD WATER. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0339716B1 (en) |
JP (1) | JPH01316475A (en) |
AT (1) | ATE83804T1 (en) |
AU (1) | AU617791B2 (en) |
DE (1) | DE68903989T2 (en) |
ES (1) | ES2045384T3 (en) |
GR (1) | GR3007148T3 (en) |
NZ (1) | NZ228751A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4798683A (en) * | 1988-04-21 | 1989-01-17 | Calgon Corporation | Method for controlling corrosion using molybdate compositions |
EP0660887A1 (en) * | 1991-04-12 | 1995-07-05 | Gulf Coast Performance Chemical, Inc. | Method and composition for inhibiting general and pitting corrosion in cooling tower water |
DE19706410C2 (en) * | 1997-02-19 | 2001-04-05 | Metakorin Wasser Chemie Gmbh | Process and agent for the anti-corrosion treatment of water-bearing metal systems |
JP5099884B2 (en) * | 2007-03-29 | 2012-12-19 | 伯東株式会社 | Corrosion inhibitor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176059A (en) * | 1978-06-08 | 1979-11-27 | Quatic Chemicals Limited | Anti-corrosion composition for use in aqueous systems |
US4409121A (en) * | 1980-07-21 | 1983-10-11 | Uop Inc. | Corrosion inhibitors |
JPS5919480A (en) * | 1982-07-26 | 1984-01-31 | Olympus Optical Co Ltd | Solid-state image pickup device |
US4512552A (en) * | 1982-11-16 | 1985-04-23 | Katayama Chemical Works Co., Ltd. | Corrosion inhibitor |
EP0210590A3 (en) * | 1983-03-07 | 1988-02-17 | Calgon Corporation | Polymeric additives for water |
US4640793A (en) * | 1984-02-14 | 1987-02-03 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
US4717495A (en) * | 1984-11-30 | 1988-01-05 | Fleetguard, Inc. | Diesel engine cooling system compositions |
US4798683A (en) * | 1988-04-21 | 1989-01-17 | Calgon Corporation | Method for controlling corrosion using molybdate compositions |
-
1989
- 1989-04-14 NZ NZ228751A patent/NZ228751A/en unknown
- 1989-04-17 AT AT89200969T patent/ATE83804T1/en not_active IP Right Cessation
- 1989-04-17 EP EP89200969A patent/EP0339716B1/en not_active Expired - Lifetime
- 1989-04-17 ES ES89200969T patent/ES2045384T3/en not_active Expired - Lifetime
- 1989-04-17 DE DE8989200969T patent/DE68903989T2/en not_active Expired - Fee Related
- 1989-04-19 AU AU33192/89A patent/AU617791B2/en not_active Ceased
- 1989-04-21 JP JP1103325A patent/JPH01316475A/en active Pending
-
1993
- 1993-02-25 GR GR930400384T patent/GR3007148T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
JPH01316475A (en) | 1989-12-21 |
GR3007148T3 (en) | 1993-07-30 |
EP0339716B1 (en) | 1992-12-23 |
ATE83804T1 (en) | 1993-01-15 |
AU617791B2 (en) | 1991-12-05 |
DE68903989T2 (en) | 1993-06-03 |
NZ228751A (en) | 1991-10-25 |
AU3319289A (en) | 1989-10-26 |
EP0339716A1 (en) | 1989-11-02 |
ES2045384T3 (en) | 1994-01-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |