EP0065609B1 - Korrosionshemmende Zusammensetzung, Verfahren zu ihrer Herstellung und ihre Anwendung auf dem Gebiet des Schutzes von Metalloberflächen - Google Patents
Korrosionshemmende Zusammensetzung, Verfahren zu ihrer Herstellung und ihre Anwendung auf dem Gebiet des Schutzes von Metalloberflächen Download PDFInfo
- Publication number
- EP0065609B1 EP0065609B1 EP81400861A EP81400861A EP0065609B1 EP 0065609 B1 EP0065609 B1 EP 0065609B1 EP 81400861 A EP81400861 A EP 81400861A EP 81400861 A EP81400861 A EP 81400861A EP 0065609 B1 EP0065609 B1 EP 0065609B1
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- European Patent Office
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- 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.)
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- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 238000005260 corrosion Methods 0.000 title claims abstract description 56
- 230000007797 corrosion Effects 0.000 title claims abstract description 55
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 title description 16
- 239000002184 metal Substances 0.000 title description 15
- 238000002360 preparation method Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229920000768 polyamine Polymers 0.000 claims abstract description 32
- 229920000867 polyelectrolyte Polymers 0.000 claims abstract description 30
- 239000000126 substance Substances 0.000 claims abstract description 13
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims abstract description 8
- 229920001732 Lignosulfonate Polymers 0.000 claims abstract description 6
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 3
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 3
- -1 R1 is H Chemical group 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 239000007900 aqueous suspension Substances 0.000 claims 3
- 125000000217 alkyl group Chemical group 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 17
- 150000001412 amines Chemical class 0.000 description 12
- AMLFJZRZIOZGPW-UHFFFAOYSA-N prop-1-en-1-amine Chemical group CC=CN AMLFJZRZIOZGPW-UHFFFAOYSA-N 0.000 description 10
- 239000003112 inhibitor Substances 0.000 description 9
- 239000002609 medium Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000005764 inhibitory process Effects 0.000 description 5
- 230000004580 weight loss Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 208000006558 Dental Calculus Diseases 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 235000011837 pasties Nutrition 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920001444 polymaleic acid Polymers 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- WECIKJKLCDCIMY-UHFFFAOYSA-N 2-chloro-n-(2-cyanoethyl)acetamide Chemical compound ClCC(=O)NCCC#N WECIKJKLCDCIMY-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- OMOVVBIIQSXZSZ-UHFFFAOYSA-N [6-(4-acetyloxy-5,9a-dimethyl-2,7-dioxo-4,5a,6,9-tetrahydro-3h-pyrano[3,4-b]oxepin-5-yl)-5-formyloxy-3-(furan-3-yl)-3a-methyl-7-methylidene-1a,2,3,4,5,6-hexahydroindeno[1,7a-b]oxiren-4-yl] 2-hydroxy-3-methylpentanoate Chemical compound CC12C(OC(=O)C(O)C(C)CC)C(OC=O)C(C3(C)C(CC(=O)OC4(C)COC(=O)CC43)OC(C)=O)C(=C)C32OC3CC1C=1C=COC=1 OMOVVBIIQSXZSZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 150000002903 organophosphorus compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000005297 pyrex Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229920005552 sodium lignosulfonate Polymers 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
- C23F11/10—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 using organic inhibitors
Definitions
- the present invention relates, as a new industrial product, to a corrosion-inhibiting composition. It also relates to its preparation process and its application in the field of protecting metal surfaces, in particular with respect to corrosion in the presence of water in liquid or vapor form.
- anti-scaling means (hereinafter designated "B") which are in particular obtained by polymerization or copolymerization from a monomer having a unit (where R o is a nitrile, amide, imide, carboxylic acid or carboxylate radical).
- R o is a nitrile, amide, imide, carboxylic acid or carboxylate radical.
- anti-tartar substances have been recommended in particular in FR-A-2178808, FR-A-2 379 616 and US-A-4 048 066.
- a corrosion inhibiting composition intended to be introduced into an underground formation from which hydrocarbon and / or aqueous fluids are pumped, and which comprises a diamine (namely an alkyl (in C s _C 3o ) -amino-propyleneamine) and a polyelectrolyte of the polyacrylic acid, polyacrylate or polyacrylamide type (preferably a hydrolyzed polyacrylamide with 20 to 40% of non-hydrolyzed amide groups).
- a diamine namely an alkyl (in C s _C 3o ) -amino-propyleneamine
- a polyelectrolyte of the polyacrylic acid, polyacrylate or polyacrylamide type preferably a hydrolyzed polyacrylamide with 20 to 40% of non-hydrolyzed amide groups.
- diamine and the polyelectrolyte are combined with other ingredients (strong acid medium, a surfactant, an amide, an alcohol, in particular isopropanol) so that their mixture be effective.
- ingredients strong acid medium, a surfactant, an amide, an alcohol, in particular isopropanol
- the amines of formula I can be used as they can be obtained commercially, alone or mixed together, in their pure or technical forms.
- polyamines sold which are suitable mention may be made in particular of the products known under the brand names DUO-MEEN, DINORAM, TRINORAM, POLYRAM, LILA-MIN, and CEMULCAT which contain at least one polyamine I having a molecular weight greater than or equal to 228.
- DINORAM 0 which contains approximately 75% by dry weight of oleylamino-propyleneamine, 9% by dry weight of stearylamopropyleneamine and 6% by dry weight of hexadecylaminopropyleneamine
- DINORAM S which contains approximately 43% by dry weight of stearylaminopropyleneamine, 28% by dry weight of oleylaminopropyleneamine and 28% by dry weight of hexadecylaminopropyleneamine, these products being marketed by CECA.
- the polymeric organic polyelectrolytes have a molecular weight greater than or equal to about 150 and preferably a molecular weight greater than or equal to 300.
- the higher molecular weight can be high, and can be of the order of 2,000,000 or more.
- polyelectrolytes of formula II having a molecular weight of between 800 and 1000 (in particular polymaleic acids marketed under the brand name of BELCLENE by the company CIBA-GEIGY), polyelectrolytes of formula IV having a high molecular weight of the order of approximately 5 ⁇ 10 5 to approximately 10 6 (in particular to polyethyleneimines sold under the brand name of SEDIPUR by the company BASF), to polyelectrolytes of formula V having a high molecular weight of the order of approximately 5 ⁇ 10 5 to approximately 10 6 (in particular to products of the polyvinylammonium type marketed under the brand name of PRIMAFLOC by the company ROHM & HAAS), to polyelectrolytes of formula VI having an average molecular weight of the order from about 10 4 to about 10 5 (in particular to acrylic acid-styrenesulfonic acid copolymers and to their salts with alkali metals such as Na and K, sold under the brand name of SL
- the most advantageous substances according to the invention are the products of formula II.
- polyelectrolytes corresponding to formulas II to VII above may be chemically pure products, or technical products normally manufactured by industry and marketed in liquid or pasty form, or also in the form of aqueous solutions at all concentrations, without the choice of one of these forms of presentation may constitute any limitation to the present invention. However, we generally prefer for commercial reasons and for convenience. polyelectrolytes commercially available in the form of aqueous solutions.
- composition according to the invention will contain (a) 1 to 8 parts by dry weight of polyamine and b) 2 to 9 parts by dry weight of polyelectrolyte, the weight ratio a / b then being between 1: 9 and 4: 1.
- the process for preparing the corrosion inhibiting composition is carried out according to a method known per se which consists in mixing one or more polyamines with one or more polyelectrolytes.
- a method known per se which consists in mixing one or more polyamines with one or more polyelectrolytes.
- use is made of a process which is characterized in that the selected polyamine or polyamines are introduced into the liquid state, by sufficient heating, which are gradually introduced, with moderate stirring. , or bright, as the case may be, in an aqueous solution of the polyelectrolyte (s) chosen and previously heated to a temperature lower than that of the polyamine.
- the composition which is obtained may be in the form of a gel, or a paste, or a wax.
- the composition according to the invention is insoluble or sparingly soluble in water, the solubility in water being much less than 10 g / l.
- the polyamine (s) will be melted at a temperature between approximately 30 and approximately 85 ° C. and poured into the polyelectrolyte (s) brought to a temperature between approximately 15 and approximately 60 ° C.
- metal surfaces to be protected are at low temperatures, more precisely at temperatures below 60 ° C., such as the metal surfaces of air humidifiers, condensers, chilled water networks, it will be preferable to choose those, among the polyelectrolytes corresponding to the formulas II to VII above, and those, among the aliphatic polyamines corresponding to the general formula 1 above, which give, in mixture, compositions having softening points as low as possible.
- mixtures with higher softening points will be preferred as corrosion inhibitors with respect to metal surfaces subjected to high temperatures, such as for example those constituting the tubes of steam boilers, or superheaters, or else those constituting the cooling circuits of the ovens of the metallurgical and steel industries.
- the pasty or gelled compositions produced according to the invention can be introduced using a positive displacement piston pump, as is commercially available, either as is in the water of industrial or real estate circuits. to be protected, either still previously emulsified, or dispersed in a larger amount of water using one or more surface-active substances of commerce and known to those skilled in the art as capable of dispersing polyamines oily.
- the amounts of substances with surface-active properties used for this purpose depend on the commercial aspect which it is desired to give to such dispersions and should not constitute any limitation to the present invention.
- This composition constitutes an excellent corrosion inhibitor, as the experiments set out below demonstrate.
- the test piece is in the form of a cylinder with a cross-section of 1 cm 2 , screwed onto an axis of rotation, the assembly being coated with a tight heat-shrinkable sheath. It is made of steel (grade XC 35).
- each specimen is polished with abrasive paper (with silicon carbide of grade 80), rinsed with water then cleaned and degreased in alcohol under ultrasound and finally dried with hot pulsed air.
- abrasive paper with silicon carbide of grade 80
- the test cell consists of a 300 ml "PYREX” glass container provided with an opening for the introduction of the rotating test piece.
- the rotating specimen is introduced into the aggressive medium and remains in contact with said medium for 24 hours. Its rotation speed is 1000 revolutions / minute.
- the aggressive medium consists of the softened water of Table III below. The amount used is 250 ml.
- the corrosion products adhering to the test piece are ultrasonically scoured to pass them through the aggressive medium.
- the resulting aqueous medium is collected and to have a homogeneous solution, the corrosion products are dissolved by acidification with HCl.
- the content of the various cations present in trace amounts in the resulting solution is determined by atomic absorption spectrometry.
- the iron content in the case of a steel test piece (grade XC 35) is directly proportional to the intensity of the corrosive effect.
- the presence of dissolved iron in the solution results in the apparatus by the appearance of a peak of increasing height with the iron content.
- the ratio of peak heights (expressed in cm) with and without inhibitor makes it possible to deduce the inhibitory efficiency E (%) according to the relationship (where h and h ° respectively represent the heights of the peaks with and without inhibitors).
- the equipment and the potocole relating to the determination of the weight loss of the test pieces by a direct measurement of the gravimetric type are those described in the aforementioned document EP-A-10,485.
- Tables IV and V demonstrate the remarkable inhibitory properties of the compositions according to the invention, since no corrosion could have been greater than 55 ⁇ m / year for the steel, 10 ⁇ m / year for the copper and 18 ⁇ m / year for aluminum.
- compositions according to the invention are effective corrosion inhibitors, that they can be used for any metallic surface whatever the water (raw water, softened water , salt water), and that their inhibitory power is greater than that of their constituents used alone.
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)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Claims (12)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT81400861T ATE15817T1 (de) | 1981-05-27 | 1981-05-27 | Korrosionshemmende zusammensetzung, verfahren zu ihrer herstellung und ihre anwendung auf dem gebiet des schutzes von metalloberflaechen. |
| EP81400861A EP0065609B1 (de) | 1981-05-27 | 1981-05-27 | Korrosionshemmende Zusammensetzung, Verfahren zu ihrer Herstellung und ihre Anwendung auf dem Gebiet des Schutzes von Metalloberflächen |
| DE8181400861T DE3172413D1 (en) | 1981-05-27 | 1981-05-27 | Corrosion inhibiting composition, process for its preparation and its use in the field of metal surface protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP81400861A EP0065609B1 (de) | 1981-05-27 | 1981-05-27 | Korrosionshemmende Zusammensetzung, Verfahren zu ihrer Herstellung und ihre Anwendung auf dem Gebiet des Schutzes von Metalloberflächen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0065609A1 EP0065609A1 (de) | 1982-12-01 |
| EP0065609B1 true EP0065609B1 (de) | 1985-09-25 |
Family
ID=8188527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81400861A Expired EP0065609B1 (de) | 1981-05-27 | 1981-05-27 | Korrosionshemmende Zusammensetzung, Verfahren zu ihrer Herstellung und ihre Anwendung auf dem Gebiet des Schutzes von Metalloberflächen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0065609B1 (de) |
| AT (1) | ATE15817T1 (de) |
| DE (1) | DE3172413D1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2723750B1 (fr) * | 1994-08-04 | 1996-10-25 | Concorde Chimie France | Composition inhibitrice d'entartrage et de corrosion pour proteger les surfaces en contact avec de l'eau et procede de preparation de ladite composition. |
| EP0698580B2 (de) † | 1994-08-22 | 1999-11-17 | Faborga S.A. | Mittel zur Verhinderung von Ausscheidungen und von Sauerstoffkorrosion in Prozesswässern |
| FR2846670B1 (fr) * | 2002-11-06 | 2005-09-23 | Concorde Chimie | Composition inhibitrice d'entartrage et de corrosion de circuits d'eau |
| EP2048203A1 (de) * | 2007-10-12 | 2009-04-15 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Antikorrosionsbeschichtung für aktiven Korrosionsschutz von Metalloberflächen mit Sandwich-artigem Schutzmittelkomplex |
| FR2926302B1 (fr) * | 2008-01-14 | 2014-03-07 | Eads Europ Aeronautic Defence | Revetement anticorrosion nanostructure, structure le comprenant, procede de protection anticorrosion d'un substrat. |
| US8613847B2 (en) | 2008-11-19 | 2013-12-24 | King Fahd University Of Petroleum And Minerals | Method of applying polyelectrolyte multilayer film for corrosion control |
| CA2976357C (en) | 2015-02-11 | 2021-11-09 | Cytec Industries Inc. | Modified amines useful as scale inhibitors in wet process phosphoric acid production |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3069225A (en) * | 1960-01-27 | 1962-12-18 | Gen Mills Inc | Method of inhibiting corrosion |
| US3262791A (en) * | 1960-08-04 | 1966-07-26 | Petrolite Corp | Corrosion preventing method and composition |
| US3239470A (en) * | 1963-02-01 | 1966-03-08 | Grace W R & Co | Stabilizing filming amines |
| GB1133382A (en) * | 1965-06-17 | 1968-11-13 | W E Zimmie A G | Method of preventing corrosion in water systems |
| US3654993A (en) * | 1970-04-06 | 1972-04-11 | Atlantic Richfield Co | Method for inhibiting corrosion in a well |
| US3965027A (en) * | 1974-03-11 | 1976-06-22 | Calgon Corporation | Scale inhibition and corrosion inhibition |
-
1981
- 1981-05-27 AT AT81400861T patent/ATE15817T1/de not_active IP Right Cessation
- 1981-05-27 DE DE8181400861T patent/DE3172413D1/de not_active Expired
- 1981-05-27 EP EP81400861A patent/EP0065609B1/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3172413D1 (en) | 1985-10-31 |
| EP0065609A1 (de) | 1982-12-01 |
| ATE15817T1 (de) | 1985-10-15 |
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