CORROSION INHIBITOR AND WATER CONDITIONING AGENT

• Main Author: BADGER, Steven, Michael
• Format: Patent
• Language: English; French
• Published: 11.05.2017
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; PHYSICS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TESTING

A composition with corrosion inhibiting properties is provided that includes a first phosphate salt of at least one of trimetaphosphate, hexametaphosphate, or tripolyphosphate. A second phosphate salt of at least one of a disodimn phosphate and tetrasodium pyrophosphate is also present with the first phosphate salt present in a weight ratio relative to the second phosphate salt of from 1-4: 1. Upon dissolution from 0.1 to 5 total weight percent in a solvent a corrosion inhibiting solution results that is well suited for usage as a water conditioner in cooling systems. A process of protecting an iron containing metal from corrosion is also provided that includes exposing the metal to the solution. The corrosion of the metal over time is monitored to assure the protection of the metal. L'invention concerne une composition présentant des propriétés d'inhibition de la corrosion, qui comprend un premier sel de type phosphate constitué d'au moins l'un d'un trimétaphosphate, d'un hexamétaphosphate ou d'un tripolyphosphate. Un second sel de type phosphate constitué d'au moins l'un du phosphate disodique et du pyrophosphate tétrasodique est également présent, le premier sel de type phosphate étant présent en un rapport pondéral par rapport au second sel de type phosphate de 1-4:1. Après dissolution de 0,1 à 5 % en poids total dans un solvant, on obtient une solution inhibitrice de corrosion qui est bien appropriée pour être utilisée en tant qu'agent de traitement d'eau dans des systèmes de refroidissement. L'invention concerne également un procédé de protection d'un métal contenant du fer contre la corrosion, comprenant l'exposition du métal à la solution. La corrosion du métal au cours du temps est suivie pour s'assurer de la protection du métal.