C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 5/14 (2006.01)
Patent
CA 2455944
Solid free-flowing compositions of a magnesium salt of bis(hexamethylene)triamino penta(methylenephosphonic) acid are disclosed. The compositions exhibit desirable scale inhibitor properties and can be used in water treatment. In addition, a method of scale control is disclosed using the magnesium phosphonic acids under ambient conditions of relative humidity of at least 30% as can apply under subtropical or tropical conditions of high relative humidity. The preferred molar ratios of magnesium to phosphonic acid are in the range of from 1 : 1 to 3 : 1.
L'invention concerne des compositions solides à écoulement facile d'un sel de magnésium de bis (hexaméthylène) triamino penta (acide méthylènephosphonique). Ces compositions qui présentent des propriétés inhibitrices de tartre voulues, peuvent être utilisées dans le traitement de l'eau. En outre, l'invention concerne un procédé d'élimination de dépôts qui utilise les acides phosphoniques de magnésium dans des conditions ambiantes d'humidité relative d'au moins 30 %, comme on peut l'appliquer dans des conditions subtropicales et tropicales d'humidité relative élevée. De préférence, les taux molaires de magnésium par rapport à l'acide phosphonique se situent entre 1:1 et 3:1.
Borden Ladner Gervais Llp
Solutia Europe Nv/sa
Thermphos Trading Gmbh
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