Non-aqueous heat transfer fluid and use thereof

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 5/00 (2006.01) C09K 3/00 (2006.01) C09K 3/18 (2006.01) C09K 5/20 (2006.01)

Patent

CA 2453970

A non-aqueous, reduced toxicity polyhydric alcohol based heat transfer fluid is provided comprised of at least one polyhydric alcohol that acts as an ADH enzyme inhibito, such as for example propylene glycol, thereby reducing the toxicity of ethylene glycol is ethylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the polyhydric alcolhols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines, a coolant for cooling electrical or electronic components, as a heat transfer fluid for solar energy heating systems, or a heat transfer fluid for maintaining temperatures in industrial processes. A low toxicity preparation fluid for absorbing water from heat exchange systems prior to installation of the heat transfer fluid is also provided that is comprised of ethylene glycol sna at least one polyhydric alcohol, preferably propylene glycol, that acts as an ADH enzyme inhibitor.

L'invention concerne un fluide caloporteur non aqueux à base d'alcool polyhydrique à toxicité réduite, comprenant au moins un alcool polyhydrique qui agit comme un inhibiteur d'enzyme ADH, tel que par exemple un propylène glycol, ce qui permet de réduire la toxicité d'un éthylène glycol, le cas échéant. Ledit fluide caloporteur peut également comprendre des inhibiteurs de corrosion solubles dans les alcools polyhydriques utilisés par ledit fluide caloporteur. On peut utiliser ce fluide caloporteur comme réfrigérant pour des moteurs à combustion interne tels que des moteurs d'automobiles ou pour des composants électriques ou électroniques; et comme fluide caloporteur pour des systèmes de chauffage par énergie solaire ou pour maintenir des températures dans des processus industriels. L'invention concerne également un fluide de préparation à faible toxicité destiné à absorber l'eau provenant de systèmes d'échange thermique avant l'installation du fluide caloporteur comprenant un éthylène glycol et au moins un alcool polyhydrique, notamment un propylène glycol agissant comme un inhibiteur d'enzyme ADH.

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