申请人:Smiths Industries Public Limited Company
公开号:EP0010918A1
公开(公告)日:1980-05-14
An antifreeze agent comprises a water-soluble alcohol component, such as ethylene glycol, together with the following percentages by weight (all with reference to the alcohol component) of the following substances:
about 0.02 to about 1% alkali metal or ammonium metasilicate (calculated as pentahydrate), such as sodium metasilicate;
about 0.1 to about 5% alkali metal or ammonium salt of an α,β-ethylenically unsaturated carboxylic acid, such as sodium cinnamate;
about 0.5 to about 5% alkali metal or ammonium salt of boric acid, such as borax decahydrate;
0 to about 1% alkali metal or ammonium hydroxide, such as caustic soda;
0 to about 0.15% polycyclic heterocyclic copper corrosion inhibitor, such as benzotriazole;
0 to about 1% alkali metal or ammonium nitrite, such as sodium nitrite; and
0 to about 1 % alkali metal or ammonium nitrate, such as sodium nitrate.
防冻剂由水溶性醇类成分(如乙二醇)和以下重量百分比的物质(均指醇类成分)组成:
约 0.02 至约 1%的碱金属或偏硅酸铵(以五水计算),如偏硅酸钠;
约 0.1%至约 5%的α,β-乙烯不饱和羧酸的碱金属盐或铵盐,如肉桂酸钠;
约 0.5%至约 5%的硼酸碱金属盐或铵盐,如十水硼砂;
0 至约 1%的碱金属或氢氧化铵,如烧碱;
0 至约 0.15%的多环杂环铜缓蚀剂,如苯并三唑;
0 至约 1%的碱金属或亚硝酸铵,如亚硝酸钠;以及
0 至约 1%的碱金属或硝酸铵,如硝酸钠。