CA2107791C - Methode et composition pour inhiber la corrosion par piqures et la corrosion en general dans un refroidisseur d'eau - Google Patents

Methode et composition pour inhiber la corrosion par piqures et la corrosion en general dans un refroidisseur d'eau Download PDF

Info

Publication number: CA2107791C
Authority: CA; Canada
Prior art keywords: ppm; phosphate; cooling tower; corrosion; molybdate
Prior art date: 1991-04-12
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

Application number

CA002107791A

Other languages

English (en)

Other versions

CA2107791A1 (fr

Inventor

Bradley A. Bucher

Jesse H. Jefferies

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.)

Gulf Coast Performance Chemical Inc

Original Assignee

Gulf Coast Performance Chemical Inc

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.)

1991-04-12

Filing date

1992-04-09

Publication date

2002-03-12

1992-04-09 Application filed by Gulf Coast Performance Chemical Inc filed Critical Gulf Coast Performance Chemical Inc

1992-10-13 Publication of CA2107791A1 publication Critical patent/CA2107791A1/fr

2002-03-12 Application granted granted Critical

2002-03-12 Publication of CA2107791C publication Critical patent/CA2107791C/fr

2012-04-09 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

238000005260 corrosion Methods 0.000 title claims abstract description 121
230000007797 corrosion Effects 0.000 title claims abstract description 119
239000000203 mixture Substances 0.000 title claims abstract description 54
238000001816 cooling Methods 0.000 title claims abstract description 51
238000000034 method Methods 0.000 title claims abstract description 36
230000002401 inhibitory effect Effects 0.000 title claims abstract description 34
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 64
229910019142 PO4 Inorganic materials 0.000 claims abstract description 60
239000010452 phosphate Substances 0.000 claims abstract description 49
MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 40
239000011701 zinc Substances 0.000 claims abstract description 29
229910052725 zinc Inorganic materials 0.000 claims abstract description 29
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 27
229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 10
239000010962 carbon steel Substances 0.000 claims abstract description 10
235000021317 phosphate Nutrition 0.000 claims description 58
239000003112 inhibitor Substances 0.000 claims description 20
239000007788 liquid Substances 0.000 claims description 20
238000001556 precipitation Methods 0.000 claims description 16
239000003381 stabilizer Substances 0.000 claims description 16
150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 11
-1 alkali metal molybdate Chemical class 0.000 claims description 9
238000002425 crystallisation Methods 0.000 claims description 7
230000008025 crystallization Effects 0.000 claims description 7
QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 7
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
239000001506 calcium phosphate Substances 0.000 claims description 6
235000011010 calcium phosphates Nutrition 0.000 claims description 6
230000003134 recirculating effect Effects 0.000 claims description 6
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
239000000654 additive Substances 0.000 claims description 5
229940043430 calcium compound Drugs 0.000 claims description 5
150000001674 calcium compounds Chemical class 0.000 claims description 5
229910000389 calcium phosphate Inorganic materials 0.000 claims description 5
229910052802 copper Inorganic materials 0.000 claims description 5
239000010949 copper Substances 0.000 claims description 5
150000001253 acrylic acids Chemical class 0.000 claims description 4
239000003352 sequestering agent Substances 0.000 claims description 4
150000003926 acrylamides Chemical class 0.000 claims description 3
229910052742 iron Inorganic materials 0.000 claims description 3
150000003839 salts Chemical class 0.000 claims description 3
230000000996 additive effect Effects 0.000 claims description 2
229910052783 alkali metal Inorganic materials 0.000 claims description 2
125000005228 aryl sulfonate group Chemical group 0.000 claims description 2
229920001567 vinyl ester resin Polymers 0.000 claims description 2
125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
229920003169 water-soluble polymer Polymers 0.000 claims 2
XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims 1
229920001577 copolymer Polymers 0.000 description 9
CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 8
JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 8
XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 7
229910052751 metal Inorganic materials 0.000 description 7
239000002184 metal Substances 0.000 description 7
150000003752 zinc compounds Chemical class 0.000 description 7
229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 6
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
229920000388 Polyphosphate Polymers 0.000 description 6
229910052791 calcium Inorganic materials 0.000 description 6
239000011575 calcium Substances 0.000 description 6
150000001875 compounds Chemical class 0.000 description 6
239000000463 material Substances 0.000 description 6
229920000642 polymer Polymers 0.000 description 6
239000001205 polyphosphate Substances 0.000 description 6
235000011176 polyphosphates Nutrition 0.000 description 6
239000001488 sodium phosphate Substances 0.000 description 6
RYCLIXPGLDDLTM-UHFFFAOYSA-J tetrapotassium;phosphonato phosphate Chemical compound [K+].[K+].[K+].[K+].[O-]P([O-])(=O)OP([O-])([O-])=O RYCLIXPGLDDLTM-UHFFFAOYSA-J 0.000 description 6
229910001385 heavy metal Inorganic materials 0.000 description 5
229920000141 poly(maleic anhydride) Polymers 0.000 description 5
239000011684 sodium molybdate Substances 0.000 description 5
235000015393 sodium molybdate Nutrition 0.000 description 5
229910001463 metal phosphate Inorganic materials 0.000 description 4
229910000403 monosodium phosphate Inorganic materials 0.000 description 4
235000019799 monosodium phosphate Nutrition 0.000 description 4
AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 4
TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 4
229920001897 terpolymer Polymers 0.000 description 4
231100000331 toxic Toxicity 0.000 description 4
230000002588 toxic effect Effects 0.000 description 4
235000005074 zinc chloride Nutrition 0.000 description 4
239000011592 zinc chloride Substances 0.000 description 4
230000007613 environmental effect Effects 0.000 description 3
229920001519 homopolymer Polymers 0.000 description 3
230000005764 inhibitory process Effects 0.000 description 3
BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 description 2
NNRAOBUKHNZQFX-UHFFFAOYSA-N 2H-benzotriazole-4-thiol Chemical compound SC1=CC=CC2=C1NN=N2 NNRAOBUKHNZQFX-UHFFFAOYSA-N 0.000 description 2
NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
230000008901 benefit Effects 0.000 description 2
QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
239000012964 benzotriazole Substances 0.000 description 2
239000000498 cooling water Substances 0.000 description 2
BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 2
239000002270 dispersing agent Substances 0.000 description 2
238000002161 passivation Methods 0.000 description 2
239000002002 slurry Substances 0.000 description 2
LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 description 1
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
229910000881 Cu alloy Inorganic materials 0.000 description 1
101100244348 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) pma-1 gene Proteins 0.000 description 1
ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
239000002253 acid Substances 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
239000013543 active substance Substances 0.000 description 1
150000001340 alkali metals Chemical class 0.000 description 1
229910052784 alkaline earth metal Inorganic materials 0.000 description 1
150000001342 alkaline earth metals Chemical class 0.000 description 1
229910000147 aluminium phosphate Inorganic materials 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
229910052804 chromium Inorganic materials 0.000 description 1
239000011651 chromium Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
238000011109 contamination Methods 0.000 description 1
229910000397 disodium phosphate Inorganic materials 0.000 description 1
235000019800 disodium phosphate Nutrition 0.000 description 1
230000008020 evaporation Effects 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
238000007429 general method Methods 0.000 description 1
230000036571 hydration Effects 0.000 description 1
238000006703 hydration reaction Methods 0.000 description 1
238000005259 measurement Methods 0.000 description 1
229910021645 metal ion Inorganic materials 0.000 description 1
VLCAYQIMSMPEBW-UHFFFAOYSA-N methyl 3-hydroxy-2-methylidenebutanoate Chemical compound COC(=O)C(=C)C(C)O VLCAYQIMSMPEBW-UHFFFAOYSA-N 0.000 description 1
230000003641 microbiacidal effect Effects 0.000 description 1
150000003009 phosphonic acids Chemical class 0.000 description 1
235000011007 phosphoric acid Nutrition 0.000 description 1
229910000160 potassium phosphate Inorganic materials 0.000 description 1
235000011009 potassium phosphates Nutrition 0.000 description 1
238000005057 refrigeration Methods 0.000 description 1
FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
235000019832 sodium triphosphate Nutrition 0.000 description 1
238000012421 spiking Methods 0.000 description 1
230000006641 stabilisation Effects 0.000 description 1
238000011105 stabilization Methods 0.000 description 1
239000010959 steel Substances 0.000 description 1
239000000126 substance Substances 0.000 description 1
238000012360 testing method Methods 0.000 description 1
235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
229910000406 trisodium phosphate Inorganic materials 0.000 description 1
235000019801 trisodium phosphate Nutrition 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
- C23F11/18—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 inorganic inhibitors
- C23F11/187—Mixtures of inorganic inhibitors
- C23F11/188—Mixtures of inorganic inhibitors containing phosphates
- 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)
Inorganic Chemistry (AREA)
Preventing Corrosion Or Incrustation Of Metals (AREA)

CA002107791A 1991-04-12 1992-04-09 Methode et composition pour inhiber la corrosion par piqures et la corrosion en general dans un refroidisseur d'eau Expired - Fee Related CA2107791C (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US685,087		1984-12-21
US68508791A	1991-04-12	1991-04-12
PCT/US1992/002862 WO1992018665A1 (fr)	1991-04-12	1992-04-09	Procede et composition servant a inhiber une corrosion generalisee et la piqure de corrosion dans une tour de refrigeration

Publications (2)

Publication Number	Publication Date
CA2107791A1 CA2107791A1 (fr)	1992-10-13
CA2107791C true CA2107791C (fr)	2002-03-12

Family

ID=24750727

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002107791A Expired - Fee Related CA2107791C (fr)	1991-04-12	1992-04-09	Methode et composition pour inhiber la corrosion par piqures et la corrosion en general dans un refroidisseur d'eau

Country Status (7)

Country	Link
EP (1)	EP0660887A1 (fr)
KR (1)	KR970001009B1 (fr)
AU (1)	AU660027B2 (fr)
CA (1)	CA2107791C (fr)
GB (1)	GB2271107B (fr)
RO (1)	RO109562B1 (fr)
WO (1)	WO1992018665A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2272431B (en) *	1992-08-17	1997-04-09	Grace W R & Co	Inhibition of corrosion in aqueous systems
US5602888A (en) *	1993-10-29	1997-02-11	General Electric Company	Radiation-induced palladium doping of metals to protect against stress corrosion cracking
US5773096A (en) *	1993-10-29	1998-06-30	General Electric Company	Method of catalyst preparation by high-temperature hydrothermal incorporation of noble metals onto surfaces and matrices
US5600692A (en) *	1993-10-29	1997-02-04	General Electric Company	Method for improving tenacity and loading of palladium on palladium-doped metal surfaces
US5600691A (en) *	1993-10-29	1997-02-04	General Electric Company	Noble metal doping or coating of crack interior for stress corrosion cracking protection of metals
US5608766A (en) *	1993-10-29	1997-03-04	General Electric Company	Co-deposition of palladium during oxide film growth in high-temperature water to mitigate stress corrosion cracking
US5818893A (en) *	1993-10-29	1998-10-06	General Electric Company	In-situ palladium doping or coating of stainless steel surfaces
US5625656A (en) *	1993-10-29	1997-04-29	General Electric Company	Method for monitoring noble metal distribution in reactor circuit during plant application
TW253058B (en) *	1994-03-10	1995-08-01	Gen Electric	Method of doping or coating metal surfaces with metallic elements to improve oxide film insulating characteristics
KR102093142B1 (ko)	2017-12-08	2020-05-27	(주) 시온텍	냉각수 정화장치

Family Cites Families (9)

* Cited by examiner, † Cited by third party
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
US4440721A (en) *	1981-10-26	1984-04-03	Basf Wyandotte Corporation	Aqueous liquids containing metal cavitation-erosion corrosion inhibitors
US4711725A (en) *	1985-06-26	1987-12-08	Rohm And Haas Co.	Method of stabilizing aqueous systems
US4867944A (en) *	1988-01-13	1989-09-19	Gulf Coast Performance Chemical, Inc.	Method of preventing corrosion by contaminated cooling tower waters
FR2627511B1 (fr) *	1988-02-18	1993-07-09	Gaz De France	Inhibiteurs de corrosion des aciers et compositions aqueuses d'halogenure de metal alcalin les contenant
US5002697A (en) *	1988-03-15	1991-03-26	Nalco Chemical Company	Molybdate-containing corrosion inhibitors
NZ228751A (en) *	1988-04-21	1991-10-25	Calgon Corp	Composition and method for inhibiting corrosion in an aqueous system comprising a molybdate, a carboxylic acid/sulphonic acid polymer and a polyphosphoric acid or ester
US4798683A (en) *	1988-04-21	1989-01-17	Calgon Corporation	Method for controlling corrosion using molybdate compositions

1992
- 1992-04-09 WO PCT/US1992/002862 patent/WO1992018665A1/fr not_active Ceased
- 1992-04-09 CA CA002107791A patent/CA2107791C/fr not_active Expired - Fee Related
- 1992-04-09 KR KR1019930703111A patent/KR970001009B1/ko not_active Expired - Fee Related
- 1992-04-09 EP EP92922768A patent/EP0660887A1/fr not_active Withdrawn
- 1992-04-09 RO RO93-01348A patent/RO109562B1/ro unknown
- 1992-04-09 AU AU18794/92A patent/AU660027B2/en not_active Ceased
1993
- 1993-10-08 GB GB9320754A patent/GB2271107B/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
GB2271107A (en)	1994-04-06
GB2271107B (en)	1995-02-22
EP0660887A4 (fr)	1994-08-19
KR970001009B1 (ko)	1997-01-25
EP0660887A1 (fr)	1995-07-05
WO1992018665A1 (fr)	1992-10-29
GB9320754D0 (en)	1994-01-26
AU1879492A (en)	1992-11-17
RO109562B1 (ro)	1995-03-30
AU660027B2 (en)	1995-06-08
CA2107791A1 (fr)	1992-10-13

Legal Events

Date	Code	Title	Description
1999-04-07	EEER	Examination request
2005-04-11	MKLA	Lapsed

Publication	Publication Date	Title
US4303568A (en)	1981-12-01	Corrosion inhibition treatments and method
US4409121A (en)	1983-10-11	Corrosion inhibitors
US5227133A (en)	1993-07-13	Method and composition for inhibiting general and pitting corrosion in cooling tower water
US4689200A (en)	1987-08-25	Systems inhibited against corrosion and/or scale deposition
CA1250498A (fr)	1989-02-28	Methode de conditionnement de surfaces de metaux
US11661365B2 (en)	2023-05-30	Composition and method for inhibiting corrosion
DE69709825T2 (de)	2002-09-19	Hydroxyimino-Alkylenphosphonsäuren als Korrosions- und Kesselsteininhibitor in wässerige Systeme
CA1113238A (fr)	1981-12-01	Substance anti-corrosive
CA2107791C (fr)	2002-03-12	Methode et composition pour inhiber la corrosion par piqures et la corrosion en general dans un refroidisseur d'eau
US5320779A (en)	1994-06-14	Use of molybdate as corrosion inhibitor in a zinc/phosphonate cooling water treatment
US5192447A (en)	1993-03-09	Use of molybdate as a cooling water corrosion inhibitor at higher temperatures
US4717542A (en)	1988-01-05	Inhibiting corrosion of iron base metals
US4502978A (en)	1985-03-05	Method of improving inhibitor efficiency in hard waters
US4671934A (en)	1987-06-09	Aminophosphonic acid/phosphate mixtures for controlling corrosion of metal and inhibiting calcium phosphate precipitation
WO2001029286A1 (fr)	2001-04-26	Composition inhibitante de corrosion tout organique et ses utilisations
CA2092207C (fr)	2004-02-03	Inhibition de corrosion et de saumure de chlorure de calcium
US5314660A (en)	1994-05-24	Use of cationic alkyl-phosphonium salts as corrosion inhibitors in open recirculating systems
US6416712B2 (en)	2002-07-09	Corrosion inhibition method suitable for use in potable water
CA1159246A (fr)	1983-12-27	Produits anticorrosion
KR100310166B1 (ko)	2001-12-17	금속의부식방지및수중이온의스케일형성을억제하기위한수처리프로그램및수처리방법
US5068059A (en)	1991-11-26	Corrosion inhibitor
JPS59193282A (ja)	1984-11-01	金属表面の状態調整方法
KR100315437B1 (ko)	2002-02-28	금속의부식및수중이온의스케일형성을방지하기위한수처리제조성물및수처리방법
KR100470107B1 (ko)	2005-02-04	밀폐형 난방 시스템용 설비 보호제 조성물
KR101190519B1 (ko)	2012-10-16	개방 순환 냉각시스템의 전처리용 수처리제 조성물 및수처리 방법