EP0004665A2 - Inhibiteur de corrosion pour conduites d'eau - Google Patents

Inhibiteur de corrosion pour conduites d'eau Download PDF

Info

Publication number: EP0004665A2
Authority: EP; European Patent Office
Prior art keywords: added; water; amounts; metals; corrosion
Prior art date: 1978-04-07
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

Application number

EP79101022A

Other languages

German (de)

English (en)

Other versions

EP0004665A3 (en

EP0004665B1 (fr

Inventor

Manfred Dr. Dohr

Volker Dr. Wehle

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Henkel AG and Co KGaA

Original Assignee

Henkel AG and Co KGaA

Priority date (The priority date 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 date listed.)

1978-04-07

Filing date

1979-04-04

Publication date

1979-10-17

1979-04-04 Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA

1979-10-17 Publication of EP0004665A2 publication Critical patent/EP0004665A2/fr

1979-10-31 Publication of EP0004665A3 publication Critical patent/EP0004665A3/xx

1981-09-02 Application granted granted Critical

1981-09-02 Publication of EP0004665B1 publication Critical patent/EP0004665B1/fr

Status Expired legal-status Critical Current

Links

238000005260 corrosion Methods 0.000 title claims abstract description 19
230000007797 corrosion Effects 0.000 title claims abstract description 18
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 19
239000003112 inhibitor Substances 0.000 title claims description 6
229910052751 metal Inorganic materials 0.000 claims abstract description 8
239000002184 metal Substances 0.000 claims abstract description 8
150000002739 metals Chemical class 0.000 claims abstract description 5
JCMYUFMDOYGRKD-UHFFFAOYSA-N 4-(2-carboxyethyl)-4-nitroheptanedioic acid Chemical compound OC(=O)CCC(CCC(O)=O)(CCC(O)=O)[N+]([O-])=O JCMYUFMDOYGRKD-UHFFFAOYSA-N 0.000 claims abstract description 4
238000000034 method Methods 0.000 claims description 7
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
150000001875 compounds Chemical class 0.000 claims description 6
-1 ferrous metals Chemical class 0.000 claims description 6
239000011574 phosphorus Substances 0.000 claims description 6
229910052698 phosphorus Inorganic materials 0.000 claims description 6
150000003751 zinc Chemical class 0.000 claims description 6
238000001816 cooling Methods 0.000 claims description 5
RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 claims description 4
239000002270 dispersing agent Substances 0.000 claims description 4
239000004575 stone Substances 0.000 claims description 4
MUZDXNQOSGWMJJ-UHFFFAOYSA-N 2-methylprop-2-enoic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=C)C(O)=O MUZDXNQOSGWMJJ-UHFFFAOYSA-N 0.000 claims description 3
229920003145 methacrylic acid copolymer Polymers 0.000 claims description 3
150000003009 phosphonic acids Chemical class 0.000 claims description 3
229920000058 polyacrylate Polymers 0.000 claims description 3
229920000642 polymer Polymers 0.000 claims description 3
239000011814 protection agent Substances 0.000 claims description 3
230000000536 complexating effect Effects 0.000 claims description 2
239000008235 industrial water Substances 0.000 claims description 2
HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 claims 2
239000000047 product Substances 0.000 description 4
239000000126 substance Substances 0.000 description 4
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
239000000203 mixture Substances 0.000 description 3
229910052725 zinc Inorganic materials 0.000 description 3
239000011701 zinc Substances 0.000 description 3
230000015572 biosynthetic process Effects 0.000 description 2
LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
230000002401 inhibitory effect Effects 0.000 description 2
JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
OLQJQHSAWMFDJE-UHFFFAOYSA-N 2-(hydroxymethyl)-2-nitropropane-1,3-diol Chemical compound OCC(CO)(CO)[N+]([O-])=O OLQJQHSAWMFDJE-UHFFFAOYSA-N 0.000 description 1
CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
241000251468 Actinopterygii Species 0.000 description 1
229910001369 Brass Inorganic materials 0.000 description 1
DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
229910001335 Galvanized steel Inorganic materials 0.000 description 1
SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
229910019142 PO4 Inorganic materials 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 1
239000002253 acid Substances 0.000 description 1
239000000654 additive Substances 0.000 description 1
229910052782 aluminium Inorganic materials 0.000 description 1
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
229910052586 apatite Inorganic materials 0.000 description 1
239000007864 aqueous solution Substances 0.000 description 1
QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
239000012964 benzotriazole Substances 0.000 description 1
230000003115 biocidal effect Effects 0.000 description 1
239000010951 brass Substances 0.000 description 1
239000007795 chemical reaction product Substances 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
239000004927 clay Substances 0.000 description 1
238000004140 cleaning Methods 0.000 description 1
239000000498 cooling water Substances 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000012851 eutrophication Methods 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
239000013505 freshwater Substances 0.000 description 1
239000008397 galvanized steel Substances 0.000 description 1
229940015043 glyoxal Drugs 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
229910052816 inorganic phosphate Inorganic materials 0.000 description 1
235000014413 iron hydroxide Nutrition 0.000 description 1
NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical class [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
230000007774 longterm Effects 0.000 description 1
230000007257 malfunction Effects 0.000 description 1
239000000463 material Substances 0.000 description 1
230000003641 microbiacidal effect Effects 0.000 description 1
229940124561 microbicide Drugs 0.000 description 1
VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
239000010452 phosphate Substances 0.000 description 1
235000021317 phosphate Nutrition 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
238000001556 precipitation Methods 0.000 description 1
150000003839 salts Chemical class 0.000 description 1
HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 1
239000010959 steel Substances 0.000 description 1
230000001988 toxicity Effects 0.000 description 1
231100000419 toxicity Toxicity 0.000 description 1
239000002351 wastewater Substances 0.000 description 1
230000004580 weight loss Effects 0.000 description 1
235000005074 zinc chloride Nutrition 0.000 description 1
239000011592 zinc chloride Substances 0.000 description 1
UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
229940007718 zinc hydroxide Drugs 0.000 description 1
229910021511 zinc hydroxide Inorganic materials 0.000 description 1
NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
229960001763 zinc sulfate Drugs 0.000 description 1
229910000368 zinc sulfate Inorganic materials 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
- C23F11/14—Nitrogen-containing compounds
- C23F11/147—Nitrogen-containing compounds containing a nitrogen-to-oxygen bond

Definitions

the invention relates to the use of tris (2-carboxyethyl) nitromethane - hereinafter abbreviated TCN - to prevent corrosion of metals in service water systems.
TCN is used to prevent corrosion of metals in aqueous systems in the pH range 6-9.
the amounts which are expediently added to the aqueous system are in the range from 0.5 to 100 g / m 3 , preferably 1 to 10 g / m 3 .
TCN is produced by methods known per se and is not the subject of the invention.
TCN extraordinarily good corrosion-inhibiting effect of TCN is surprising insofar as other similarly built compounds such as, for example, tris (hydroxymethyl) nitromethane do not have an adequate corrosion protection effect in practice.
TCN tris (hydroxymethyl) nitromethane
the stone protection and dispersing agents listed above are used in combination with TCN in amounts of 1-50 g / m 3 , preferably 3-10 g / m.
TCN can also be used in combination with zinc salts and / or compounds containing phosphorus. / 4th
Zinc chloride and zinc sulfate are particularly suitable as zinc salts. Amounts (calculated as zinc) of 0.5 to 10 g / m 3 , preferably 1 to 4 g / m 3 corresponding to an amount of 0.5 to 10 or 1 to 4 ppm are used.
complexing phosphonic acids such as, for example, 1-hydroxyethane-1,1-diphosphonic acid, aminotrimethylenephosphonic acid and 2-phosphonobutane-1,2,4-tricaronic acid and their water-soluble salts or mixtures of these compounds, are suitable as phosphorus-containing compounds.
Quantities of 0.5 - 10 g / m are used. Such a combination can significantly increase the protection against corrosion.
biocidal substances such as glutaraldehyde, glyoxal, pentachlorophenol sodium or alkyloligoamides, preferably in the form of a reaction product of dodicylpropylcndiamine and ⁇ -caprolactan in a ratio of 1: 2.
test water used as the corrosive medium had the following analytical data:
Table below shows the reduction in the corrosive attack of a water when the agents listed in detail are added to the untreated water.
a technical cooling system with a content of 1.2 m 3 and a circulation of 8 m 3 / h is operated with Düsseldorf city water.
the evaporation losses are compensated by adding fresh water to such an extent that the salinity does not exceed twice the original value.
an electrochemically measured corrosion rate of 0.18 mm / a is set in the system.
composition according to the invention has the following composition:
TCN was used together with other inhibitors and the corrosion rates, expressed in mm / year, were determined using the coupon method, in which the test water was passed through a coupon test track according to ASTM (D 2688/70) under the same conditions. was pumped.

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)

EP19790101022 1978-04-07 1979-04-04 Inhibiteur de corrosion pour conduites d'eau Expired EP0004665B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE2815016		1978-04-07
DE19782815016 DE2815016C2 (de)	1978-04-07	1978-04-07	Korrosionsinhibitor für Brauchwassersysteme

Publications (3)

Publication Number	Publication Date
EP0004665A2 true EP0004665A2 (fr)	1979-10-17
EP0004665A3 EP0004665A3 (en)	1979-10-31
EP0004665B1 EP0004665B1 (fr)	1981-09-02

Family

ID=6036367

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19790101022 Expired EP0004665B1 (fr)	1978-04-07	1979-04-04	Inhibiteur de corrosion pour conduites d'eau

Country Status (3)

Country	Link
EP (1)	EP0004665B1 (fr)
AT (1)	AT360303B (fr)
DE (1)	DE2815016C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4442114A1 (de) *	1994-11-25	1996-05-30	Buna Sow Leuna Olefinverb Gmbh	Nitrit-, phosphat- und aminfreies Kühl- und Wärmeübertragungsmittel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
LU28635A1 (fr) *	1946-10-25
DE1221993B (de) *	1960-09-30	1966-07-28	Argentox Ges Fuer Wasserreinig	Verfahren zur Korrosionsverhinderung bei gleichzeitiger Kesselsteinverhuetung
FR1405565A (fr) *	1963-08-15	1965-07-09	Commercial Solvents Corp	Composé nitré et son procédé de préparation
US4033896A (en) *	1976-06-18	1977-07-05	Monsanto Company	Method of corrosion inhibition and compositions therefor

1978
- 1978-04-07 DE DE19782815016 patent/DE2815016C2/de not_active Expired
1979
- 1979-04-04 AT AT248979A patent/AT360303B/de not_active IP Right Cessation
- 1979-04-04 EP EP19790101022 patent/EP0004665B1/fr not_active Expired

Also Published As

Publication number	Publication date
DE2815016A1 (de)	1979-10-18
EP0004665A3 (en)	1979-10-31
EP0004665B1 (fr)	1981-09-02
ATA248979A (de)	1980-05-15
DE2815016C2 (de)	1986-04-10
AT360303B (de)	1980-01-12

Legal Events

Date	Code	Title	Description
1979-08-21	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1979-08-29	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1979-10-17	AK	Designated contracting states	Designated state(s): BE CH FR IT NL
1979-10-31	AK	Designated contracting states	Designated state(s): BE CH FR IT NL
1980-04-30	17P	Request for examination filed
1981-05-15	ITF	It: translation for a ep patent filed
1981-07-04	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1981-09-02	AK	Designated contracting states	Designated state(s): BE CH FR IT NL
1989-03-23	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19890323 Year of fee payment: 11
1989-04-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19890412 Year of fee payment: 11
1989-04-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19890428 Year of fee payment: 11
1989-04-30	ITTA	It: last paid annual fee
1989-04-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19890430 Year of fee payment: 11
1990-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Effective date: 19900430 Ref country code: CH Effective date: 19900430
1990-10-31	BERE	Be: lapsed	Owner name: HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN Effective date: 19900430
1990-11-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19901101
1990-12-17	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1990-12-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19901228
1990-12-28	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1991-03-01	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2016-09-14	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
2016-09-14	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

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