C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/38 (2006.01) C02F 5/14 (2006.01)
Patent
CA 2260904
The invention is a method for the prevention of scale formation on metal or other surfaces in contact with scale-forming industrial water with an effective scale-inhibiting amount of an ether-1,1-diphosphonate of general formula (I). The invention is also a method for the prevention of corrosion on metal surfaces in contact with corrosive industrial water with an effective corrosion-inhibiting amount of an ether-1,1-diphosphonate of the same general formula. A preferred ether-1,1-diphosphonate is 1,1, diphosphono-4,7- dioxaoctane for both methods.
Procédé permettant d'empêcher la formation de tartre sur du métal ou d'autres surfaces en contact avec des eaux industrielles provoquant du tartre à l'aide d'une quantité inhibitrice de tartre d'un éther-1,1-diphosphonate de formule générale (I). La présente invention concerne également un procédé de prévention de la corrosion sur des surfaces métalliques en contact avec des eaux industrielles corrosives à l'aide d'une quantité inhibitrice de corrosion d'un éther-1,1-diphosphonate de la même formule générale. Le diphosphonate d'éther préféré pour les deux procédés est le 1,1, diphosphono-4,7-dioxaoctane.
Carter Phillip W.
Davis Ronald V.
Kamrath Michael A.
Reed Peter E.
Marks & Clerk
Nalco Chemical Company
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