EP0006065A3 - Composition and method for inhibiting corrosion - Google Patents

Composition and method for inhibiting corrosion Download PDF

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Publication number
EP0006065A3
EP0006065A3 EP79400353A EP79400353A EP0006065A3 EP 0006065 A3 EP0006065 A3 EP 0006065A3 EP 79400353 A EP79400353 A EP 79400353A EP 79400353 A EP79400353 A EP 79400353A EP 0006065 A3 EP0006065 A3 EP 0006065A3
Authority
EP
European Patent Office
Prior art keywords
effective
composition
industrial
inhibiting corrosion
piping
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.)
Withdrawn
Application number
EP79400353A
Other languages
German (de)
French (fr)
Other versions
EP0006065A2 (en
Inventor
Paul Hotchkiss Ralston
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.)
Calgon Corp
Original Assignee
Calgon Corp
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.)
Filing date
Publication date
Application filed by Calgon Corp filed Critical Calgon Corp
Publication of EP0006065A2 publication Critical patent/EP0006065A2/en
Publication of EP0006065A3 publication Critical patent/EP0006065A3/en
Withdrawn legal-status Critical Current

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
    • 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)

Abstract

A corrosion inhibitor composition and a method for its use in potable and industrial water treatment facilities for controlling corrosion encountered in water distribution systems such as turbine pump blades, the main distribution piping, their tributaries, and domestic and industrial piping comprises a weight ratio of PO₄≡ to Zn# of about 2:1 to 3:1. When added to the raw water intake or other suitable point in small but effective quantities, it passivates metal surfaces. The inhibitor is effective within a pH range of about 5-9 but is especially effective in waters having a pH of 6.5-8.
EP79400353A 1978-06-05 1979-06-01 Composition and method for inhibiting corrosion Withdrawn EP0006065A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US91261678A 1978-06-05 1978-06-05
US912616 1978-06-05

Publications (2)

Publication Number Publication Date
EP0006065A2 EP0006065A2 (en) 1979-12-12
EP0006065A3 true EP0006065A3 (en) 1980-01-23

Family

ID=25432191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79400353A Withdrawn EP0006065A3 (en) 1978-06-05 1979-06-01 Composition and method for inhibiting corrosion

Country Status (4)

Country Link
EP (1) EP0006065A3 (en)
JP (1) JPS54159350A (en)
DK (1) DK231879A (en)
IE (1) IE791032L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT377788B (en) * 1982-08-27 1985-04-25 Itt CORROSION PROTECTIVE PAINT
CA1332138C (en) * 1985-10-29 1994-09-27 Brian Greaves Treatment of aqueous systems
GB2184109A (en) * 1985-10-29 1987-06-17 Grace W R & Co The treatment of aqueous systems
DE4425902A1 (en) * 1994-07-21 1996-01-25 Siemens Ag Introduction of zinc into nuclear reactor vessel containing water
US6200529B1 (en) * 1998-12-31 2001-03-13 A. S. Incorporated Corrosion inhibition method suitable for use in potable water
US8513176B2 (en) 2006-08-02 2013-08-20 Ch2O Incorporated Disinfecting and mineral deposit eliminating composition and methods
CN116640563B (en) * 2023-05-24 2024-07-19 西南石油大学 High-temperature corrosion-inhibition phosphate completion fluid

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669616A (en) * 1971-09-28 1972-06-13 Virginia Chemicals Inc Corrosion inhibiting compositions and method
FR2155153A5 (en) * 1971-10-06 1973-05-18 Progil Anticorrosion compsn for water systems - contng orthophosphoric acid
FR2262129A1 (en) * 1974-02-27 1975-09-19 Dia Prosim Corrosion inhibiting compsn. for potable water systems - prepd. from zinc metal, oxide or hydroxide and phosphoric acid, opt. with alkali metal phosphate present
US4089651A (en) * 1976-08-04 1978-05-16 Nalco Chemical Company Pyrophosphate-zinc corrosion inhibitor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669616A (en) * 1971-09-28 1972-06-13 Virginia Chemicals Inc Corrosion inhibiting compositions and method
FR2155153A5 (en) * 1971-10-06 1973-05-18 Progil Anticorrosion compsn for water systems - contng orthophosphoric acid
FR2262129A1 (en) * 1974-02-27 1975-09-19 Dia Prosim Corrosion inhibiting compsn. for potable water systems - prepd. from zinc metal, oxide or hydroxide and phosphoric acid, opt. with alkali metal phosphate present
US4089651A (en) * 1976-08-04 1978-05-16 Nalco Chemical Company Pyrophosphate-zinc corrosion inhibitor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 44 (1950) Abstract 5786e, Columbus, Ohio, (USA) F.E. WORSNOP et al., "Prevention of corrosion of galvanized iron by glassy metaphosphates"; & CHEM. ENG. MINING REV. 42, 173-6 (1950) *

Also Published As

Publication number Publication date
IE791032L (en) 1979-12-05
DK231879A (en) 1979-12-06
EP0006065A2 (en) 1979-12-12
JPS54159350A (en) 1979-12-17

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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PUAL Search report despatched

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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19801028

RIN1 Information on inventor provided before grant (corrected)

Inventor name: RALSTON, PAUL HOTCHKISS