DE59402091D1 - NATURAL WATER GLASS SOLUTIONS WITH HIGH ORTHOPHOSPHATE CONTENT FOR CORROSION PROTECTION IN THE DRINKING WATER AREA - Google Patents

NATURAL WATER GLASS SOLUTIONS WITH HIGH ORTHOPHOSPHATE CONTENT FOR CORROSION PROTECTION IN THE DRINKING WATER AREA

Info

Publication number
DE59402091D1
DE59402091D1 DE59402091T DE59402091T DE59402091D1 DE 59402091 D1 DE59402091 D1 DE 59402091D1 DE 59402091 T DE59402091 T DE 59402091T DE 59402091 T DE59402091 T DE 59402091T DE 59402091 D1 DE59402091 D1 DE 59402091D1
Authority
DE
Germany
Prior art keywords
corrosion protection
glass solutions
drinking water
orthophosphate content
water glass
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.)
Expired - Fee Related
Application number
DE59402091T
Other languages
German (de)
Inventor
Christian Schaal
Wolfgang Pesch
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.)
BK Giulini GmbH
Kodiak Wassertechnologie GmbH
Original Assignee
Henkel AG and Co KGaA
Kodiak Wassertechnologie GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6491685&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE59402091(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Henkel AG and Co KGaA, Kodiak Wassertechnologie GmbH filed Critical Henkel AG and Co KGaA
Application granted granted Critical
Publication of DE59402091D1 publication Critical patent/DE59402091D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Glass Compositions (AREA)

Abstract

Proposed is a liquid aqueous concentrate in the form of a homogenous solution containing at least 8 % by wt. of silicate (calculated as SiO2) and at least 3 % by wt. of phosphate (calculated as PO4), as well as a method of protecting drinking-water pipes from corrosion using the concentrate.
DE59402091T 1993-07-01 1994-06-22 NATURAL WATER GLASS SOLUTIONS WITH HIGH ORTHOPHOSPHATE CONTENT FOR CORROSION PROTECTION IN THE DRINKING WATER AREA Expired - Fee Related DE59402091D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4321883A DE4321883C2 (en) 1993-07-01 1993-07-01 Aqueous silicate solutions with high orthophosphate contents and processes for the corrosion protection treatment of drinking water pipes
PCT/EP1994/002037 WO1995001465A1 (en) 1993-07-01 1994-06-22 Sodium water-glass solutions with high orthophosphate contents for corrosion protection in the field of drinking-water supplies

Publications (1)

Publication Number Publication Date
DE59402091D1 true DE59402091D1 (en) 1997-04-17

Family

ID=6491685

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4321883A Expired - Lifetime DE4321883C2 (en) 1993-07-01 1993-07-01 Aqueous silicate solutions with high orthophosphate contents and processes for the corrosion protection treatment of drinking water pipes
DE59402091T Expired - Fee Related DE59402091D1 (en) 1993-07-01 1994-06-22 NATURAL WATER GLASS SOLUTIONS WITH HIGH ORTHOPHOSPHATE CONTENT FOR CORROSION PROTECTION IN THE DRINKING WATER AREA

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4321883A Expired - Lifetime DE4321883C2 (en) 1993-07-01 1993-07-01 Aqueous silicate solutions with high orthophosphate contents and processes for the corrosion protection treatment of drinking water pipes

Country Status (4)

Country Link
EP (1) EP0706583B1 (en)
AT (1) ATE150096T1 (en)
DE (2) DE4321883C2 (en)
WO (1) WO1995001465A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19518514A1 (en) * 1995-05-19 1996-11-21 Setral Chemie Technology Gmbh Corrosion inhibitor for use in aq. media
DE19706410C2 (en) * 1997-02-19 2001-04-05 Metakorin Wasser Chemie Gmbh Process and agent for the anti-corrosion treatment of water-bearing metal systems
DE19755622C2 (en) * 1997-12-13 2001-08-16 Kodiak Wasser Technologie Gmbh Liquid aqueous concentrates for corrosion protection
DE102005050200A1 (en) 2005-10-18 2007-04-19 Henkel Kgaa Corrosion protection for metallic water supply systems, comprises dosing silicates and supplement materials into the water stream
DE102014003770B4 (en) 2014-03-17 2023-09-28 Kurita Water Industries, Ltd. Process for inhibiting corrosion of water-conducting systems
DE102019126497A1 (en) * 2019-10-01 2021-04-01 Bwt Ag Inhibitor solution for corrosion protection for water pipes and installation systems
DE102019132318A1 (en) * 2019-11-28 2021-06-02 Bwt Ag Method and device for corrosion protection

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB491237A (en) * 1935-12-13 1938-08-25 Michelin & Cie Improvements in or relating to the conditioning of water
DE1083101B (en) * 1959-01-20 1960-06-09 Adolf Nalbach Process for achieving corrosion protection in water-carrying metallic pipes by inoculation
NL8000920A (en) * 1980-02-14 1981-09-16 Gram Cornelis H De METHOD FOR PROTECTING THE PIPING SYSTEM OF A HEATING SYSTEM, AND METHOD FOR PREPARING A WATERY MIXTURE FOR IT
FR2571745B1 (en) * 1984-10-17 1988-10-28 Trest Juzhvodoprovod ANTI-CORROSIVE FOR PROTECTING THE INTERNAL SURFACE OF A CORROSION PIPE, METHOD FOR OBTAINING THIS ANTI-CORROSIVE AND METHOD FOR PROTECTING THE INTERNAL SURFACE OF A CORROSION PIPE USING THIS ANTI-CORROSION
DE3508526C1 (en) * 1985-03-09 1986-06-19 Otto 7062 Rudersberg Kamp Process for cleaning and corrosion protection of utility water systems or heating plants
US5137657A (en) * 1991-04-24 1992-08-11 Merck & Co., Inc. Synergistic combination of sodium silicate and orthophosphate for controlling carbon steel corrosion

Also Published As

Publication number Publication date
EP0706583B1 (en) 1997-03-12
ATE150096T1 (en) 1997-03-15
WO1995001465A1 (en) 1995-01-12
EP0706583A1 (en) 1996-04-17
DE4321883A1 (en) 1995-01-12
DE4321883C2 (en) 2003-05-15

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8327 Change in the person/name/address of the patent owner

Owner name: HENKEL AG & CO. KGAA, 40589 DUESSELDORF, DE

Owner name: KODIAK WASSERTECHNOLOGIE GMBH, 40878 RATINGEN, DE

8327 Change in the person/name/address of the patent owner

Owner name: BK GIULINI GMBH, 67065 LUDWIGSHAFEN, DE

Owner name: KODIAK WASSERTECHNOLOGIE GMBH, 41334 NETTETAL, DE

8339 Ceased/non-payment of the annual fee