Patent ID: 7588695
Filing Date: 2009-09-15
Classification: C09K,C23F

Abstract:
1. An antifreeze concentrate based on alkylene glycol, glycerol, 1,3-propanediol, or a combination thereof, said antifreeze concentrate comprising: a) from 0.05 to 10% by weight, based on a total amount of the concentrate, of tripropylene glycol; b) from 0.01 to 10% by weight, based on a total amount of the concentrate, of p-toluenesulfonamide; c) from 0.05 to 10% by weight, based on a total amount of the concentrate, of triethanolamine; and d) from 0.05 to 10% by weight, based on a total amount of the concentrate, of 1H-1,2,4-triazole.