发明名称 ANTICORROSIVE FOR COOLING WATER CIRCULATING IN INTERNAL COMBUSTION ENGINE
摘要 PURPOSE:To allow an anticorrosive to show an anticorrosive effect equal or superior to the effect of a nitrite inhibitor and to make the anticorrosive effective even in a high temp. range by adding a small amount of sodium nitrite to sodium silicate as the principal component. CONSTITUTION:an anticorrosive for cooling water circulating in an internal combustion engine is prepared by adding a small amount of sodium nitrite to nontoxic sodium silicate causing no environmental pollution as a principal component. In a corrosion resistance test conducted in an aqueous soln. contg. 200ppm sodium silicate and 500ppm sodium nitrite at 30 deg.C for 14 days, the degrees mdd of corrosion of mild steel, Cr-Mo cast steel, cast iron (''Tercalloy '') and brass were 0.38, 0.5, 4.61 and 0.39, respectively.
申请公布号 JPS57164988(A) 申请公布日期 1982.10.09
申请号 JP19810048953 申请日期 1981.03.31
申请人 MITSUI ZOSEN KK 发明人 KUMADA MAKOTO;MIYAKE YOSHIAKI;MIYAZAKI YOSHIAKI
分类号 C23F11/18 主分类号 C23F11/18
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