Patent ID: 9453153
Filing Date: 2016-09-27
CPC Classification: C09K,C23F

Claim Text:
1. A heat transfer fluid concentrate comprising: a freezing point depressant in an amount of 85 wt. % to 99 wt. % based on a total weight of the heat transfer fluid concentrate; a carboxylate in an amount of 1 wt. % to 10 wt. % based on the total weight of the heat transfer fluid concentrate; an inorganic phosphate in an amount of 0.10 wt. % to 0.60 wt. % based on the total weight of the heat transfer fluid concentrate; an azole compound in an amount of 0.01 wt. % to 3 wt. % based on the total weight of the heat transfer fluid concentrate; magnesium ions in an amount of 16 ppm to 80 ppm by weight of the heat transfer fluid concentrate; and an acrylate-based polymer in an amount wherein a ratio of the acrylate-based polymer to the magnesium ions is from 1 to 25.