Patent ID: 7387748
Filing Date: 2008-06-17
Classification: C09K,C23F

Abstract:
1. A thermally stable coolant composition having a pH from about 7.8 to about 11.1 and consisting of water and a glycol in a weight ratio of about 95:5 to about 5:95 respectively, and about 0.01 weight % to about 5.0 weight % of at least one additive selected from the group consisting of 3-hydroxybenzoic acid; 4-hydroxybenzoic acid; 2,3-dihydroxybenzoic acid; 2,4-dihydroxybenzoic acid; 2,5-dihydroxybenzoic acid; 2,6-dihydroxybenzoic acid; 3,4-dihydroxybenzoic acid; 3,5-dihydroxybenzoic acid; 2,4,6-trihydroxybenzoic acid; isocitric acid; acetylsalicylic acid; resorcylic acid and the alkali salts of each of said acids.