发明公开
- 专利标题： An engine coolant composition and a method of reducing corrosion
- 专利标题（中）： 发动机冷却剂和方法，用于减少腐蚀
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申请号： EP01305379.8申请日： 2001-06-21
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公开(公告)号： EP1170348A3公开(公告)日： 2004-01-02
- 发明人: Hudgens, R. Douglas
- 申请人： FLEETGUARD, INC.
- 申请人地址： 100 BNA Corporate Center, Suite 500 Nashville, Tennessee 32717 US
- 专利权人： FLEETGUARD, INC.
- 当前专利权人： FLEETGUARD, INC.
- 当前专利权人地址： 100 BNA Corporate Center, Suite 500 Nashville, Tennessee 32717 US
- 代理机构： Smith, Norman Ian
- 优先权： US611413 20000706
- 主分类号： C09K5/20
- IPC分类号： C09K5/20 ; C09K5/10 ; C23F11/10
摘要：
In general this invention relates to an antifreeze composition that can be used in the cooling systems of internal combustion engines, for example, in heavy-duty diesel engines, light duty trucks and cars. The antifreeze composition can be added to water or other suitable liquid coolant in the cooling system, to lower the freezing point temperature of the coolant and inhibit corrosion of metallic components associated with the cooling system. The antifreeze composition is particularly well suited, although not exclusively, for use with hard water. The antifreeze composition includes an organic acid component comprising adipic acid and at least one of benzoic acid and one or more C 9 -C 12 dicarboxylic acid--or salts of these acids. The antifreeze composition also includes other anti-corrosive additive, for example, molybdate, nitrite, nitrate silicate azoles and a variety of buffer agents.
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