FR2198106A1 - Corrosion and scale prevention in cooling systems - using phosphates, zinc salts and acrylic polymers - Google Patents
Corrosion and scale prevention in cooling systems - using phosphates, zinc salts and acrylic polymersInfo
- Publication number
- FR2198106A1 FR2198106A1 FR7232052A FR7232052A FR2198106A1 FR 2198106 A1 FR2198106 A1 FR 2198106A1 FR 7232052 A FR7232052 A FR 7232052A FR 7232052 A FR7232052 A FR 7232052A FR 2198106 A1 FR2198106 A1 FR 2198106A1
- Authority
- FR
- France
- Prior art keywords
- corrosion
- phosphates
- acrylic polymers
- cooling systems
- zinc salts
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
-
- 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)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
In an ind. cooling system, corrosion is checked and solid deposits are prevented by adding to the system 1 - 50 (5 - 20) ppm P2O5 as phosphoric acid, or alkali metal (poly)phosphates, 1 - 50 (2 - 20) ppm Zn as Zn salt, and 1 - 100 (10 - 50) ppm of a poly(meth)acrylic acid or a copolymer of (meth)acrylic acid and an alkyl ester of (meth)acrylic acid in which the alkyl gp. is 12 C and may contain a N (IV) atom, esp. with mol. wt. 200 - 500,000 (1000 - 50,000). The anti - corrosion and anti - scale compsn. can be used at a pH and water hardness at which pptn. of Ca phosphate normally occurs.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7232052A FR2198106A1 (en) | 1972-09-04 | 1972-09-04 | Corrosion and scale prevention in cooling systems - using phosphates, zinc salts and acrylic polymers |
CH989473A CH566533A5 (en) | 1972-09-04 | 1973-07-06 | |
IT5156973A IT989952B (en) | 1972-09-04 | 1973-07-20 | PROCESS TO INHIBIT CORROSION AND AVOID THE FORMATION OF SOLID DEPOSITS IN INDUSTRIAL REFRIGERATION CIRCUITS |
AT713773A AT327825B (en) | 1972-09-04 | 1973-08-14 | PROCESS FOR PREVENTING CORROSION AND PREVENTING THE DEPOSITION OF SOLIDS IN INDUSTRIAL COOLING CIRCUITS |
NL7312066A NL7312066A (en) | 1972-09-04 | 1973-08-31 | |
BE135265A BE804395A (en) | 1972-09-04 | 1973-09-03 | PROCESS FOR INHIBITING CORROSION AND AVOIDING SOLID DEPOSITS IN INDUSTRIAL REFRIGERATION CIRCUITS |
ES418423A ES418423A1 (en) | 1972-09-04 | 1973-09-03 | Procedure to inhibit the corrosión and avoid the solid deposits in the industrial refrigeration circuits. (Machine-translation by Google Translate, not legally binding) |
DE19732344498 DE2344498A1 (en) | 1972-09-04 | 1973-09-04 | METHOD OF PREVENTING CORROSION IN COOLING WATER CIRCUITS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7232052A FR2198106A1 (en) | 1972-09-04 | 1972-09-04 | Corrosion and scale prevention in cooling systems - using phosphates, zinc salts and acrylic polymers |
DE19732344498 DE2344498A1 (en) | 1972-09-04 | 1973-09-04 | METHOD OF PREVENTING CORROSION IN COOLING WATER CIRCUITS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2198106A1 true FR2198106A1 (en) | 1974-03-29 |
FR2198106B1 FR2198106B1 (en) | 1975-01-03 |
Family
ID=25765734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7232052A Granted FR2198106A1 (en) | 1972-09-04 | 1972-09-04 | Corrosion and scale prevention in cooling systems - using phosphates, zinc salts and acrylic polymers |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT327825B (en) |
BE (1) | BE804395A (en) |
CH (1) | CH566533A5 (en) |
DE (1) | DE2344498A1 (en) |
FR (1) | FR2198106A1 (en) |
NL (1) | NL7312066A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2231778A1 (en) * | 1973-06-04 | 1974-12-27 | Calgon Corp | |
FR2337694A1 (en) * | 1976-01-07 | 1977-08-05 | Calgon Corp | FIGHT AGAINST SCALE AND DEPOSITS IN GAS WASHERS |
FR2362217A1 (en) * | 1976-05-10 | 1978-03-17 | Chemed Corp | METHOD AND COMPOSITION TO INHIBIT CORROSION |
EP0017373A1 (en) * | 1979-04-05 | 1980-10-15 | Betz Europe, Inc. | Stable compositions for use as corrosion inhibitors and method of corrosion inhibition in aqueous media |
US4640793A (en) * | 1984-02-14 | 1987-02-03 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
US4936987A (en) * | 1983-03-07 | 1990-06-26 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1217691A (en) | 1983-04-15 | 1987-02-10 | William M. Hann | Method of inhibiting scaling in aqueous systems with low molecular weight copolymers |
FR2601030B1 (en) * | 1986-07-03 | 1989-04-07 | Coatex Sa | ACID COMPOSITIONS WITH HIGH CONCENTRATIONS OF ACTIVE MATERIALS FOR THE TREATMENT OF WATER AND / OR THE CLEANING OF THE FACILITIES CONTAINING THEM |
-
1972
- 1972-09-04 FR FR7232052A patent/FR2198106A1/en active Granted
-
1973
- 1973-07-06 CH CH989473A patent/CH566533A5/xx not_active IP Right Cessation
- 1973-08-14 AT AT713773A patent/AT327825B/en not_active IP Right Cessation
- 1973-08-31 NL NL7312066A patent/NL7312066A/xx unknown
- 1973-09-03 BE BE135265A patent/BE804395A/en unknown
- 1973-09-04 DE DE19732344498 patent/DE2344498A1/en active Pending
Non-Patent Citations (1)
Title |
---|
NEANT * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2231778A1 (en) * | 1973-06-04 | 1974-12-27 | Calgon Corp | |
FR2337694A1 (en) * | 1976-01-07 | 1977-08-05 | Calgon Corp | FIGHT AGAINST SCALE AND DEPOSITS IN GAS WASHERS |
FR2362217A1 (en) * | 1976-05-10 | 1978-03-17 | Chemed Corp | METHOD AND COMPOSITION TO INHIBIT CORROSION |
EP0017373A1 (en) * | 1979-04-05 | 1980-10-15 | Betz Europe, Inc. | Stable compositions for use as corrosion inhibitors and method of corrosion inhibition in aqueous media |
US4936987A (en) * | 1983-03-07 | 1990-06-26 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
US4640793A (en) * | 1984-02-14 | 1987-02-03 | Calgon Corporation | Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers |
Also Published As
Publication number | Publication date |
---|---|
NL7312066A (en) | 1974-03-06 |
ATA713773A (en) | 1975-04-15 |
AT327825B (en) | 1976-02-25 |
DE2344498A1 (en) | 1974-03-21 |
CH566533A5 (en) | 1975-09-15 |
BE804395A (en) | 1974-03-04 |
FR2198106B1 (en) | 1975-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |