申请人:Shishiai-Kabushikigaisha
公开号:EP2554621A1
公开(公告)日:2013-02-06
Disclosed is a cooling liquid composition, which has an excellent ability to prevent the corrosion of mainly a metal constituting a cooling system for an internal combustion engine or the like, particularly an iron-based metal, or alumninum or an aluminum alloy, and also can effectively inhibit cavitation damage. The composition contains a glycol as a base material, wherein the composition does not contain p-tert butyl benzoate or an alkali metal salt thereof, but contains (a) 0.05-0.5% by mass of silicic acid or an alkali metal salt thereof, (b) 0.1-8% by mass of sebacic acid or an alkali metal salt thereof, (c) 0.1-10% by mass of toluic acid or an alkali metal salt thereof, and (d) 0.001-0.5% by mass of at least one compound selected from a strontium compound, a magnesium compound, and a calcium compound.
本发明公开了一种冷却液组合物,该组合物对主要构成内燃机或类似设备冷却系统的金属(尤其是铁基金属、铝或铝合金)具有出色的防腐蚀能力,还能有效抑制气蚀破坏。该组合物含有乙二醇作为基础材料,其中该组合物不含对叔丁基苯甲酸酯或其碱金属盐,但含有 (a) 0.05-0.5% 质量百分比的硅酸或其碱金属盐,(b) 0.1-8%(质量百分比)的癸二酸或其碱金属盐,(c) 0.1-10%(质量百分比)的甲苯酸或其碱金属盐,以及 (d) 0.001-0.5%(质量百分比)的至少一种选自锶化合物、镁化合物和钙化合物的化合物。