Abstract:
A monobasic aliphatic carboxylic acid is used with low levels of molybdate and a hydrocarbyl triazole to produce a well balanced corrosion inhibiting formulation with very low solids to minimize potential deposits and exhibit surprising long life characteristics in engine coolant applications.
Abstract:
The present invention relates to a monocarboxylic acid based antifreeze coolant formulation for applications such as for gasoline engines which may be used for inhibition and prevention erosion and corrosion of aluminum and the corrosion of other metals exposed to an aqueous liquid in automotive coolant systems. The formulation further inhibits mineral scale. It may be packaged as an ethylene glycol based additive for use in new engines or in a concentrate d inhibition package as an additive as for reinhibition of used coolant. The combination of a mixture of ethylene or propylene glycol, a monobasic carboxylic organic acid, azoles, and low levels of molybdates provides corrosion resistance. A heavy duty formula more suited for diesel engines al so contains a nitrite salt and/or nitrate salt and a siloxane stabilized silicate, and combinations thereof to provide a synergistic protective effec t against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations varying pH ranges.
Abstract:
The present invention relates to a monocarboxylic acid based antifreeze coolant formulation for applications such as for gasoline engines which may be used for inhibition and prevention erosion and corrosion of aluminum and the corrosion of other metals exposed to an aqueous liquid in automotive coolant systems. The formulation further inhibits mineral scale. It may be packaged as an ethylene glycol based additive for use in new engines or in a concentrated inhibition package as an additive as for reinhibition of used coolant. The combination of a mixture of ethylene or propylene glycol, a monobasic carboxylic organic acid, azoles, and low levels of molybdates provides corrosion resistance. A heavy duty formula more suited for diesel engines also contains a nitrite salt and/or nitrate salt and a siloxane stabilized silicate, and combinations thereof to provide a synergistic protective effect against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations varying pH ranges.
Abstract:
The present invention relates to an acid based antifreeze coolant formulation for heavy duty applications such as for diesel engines which may be used for inhibition and prevention erosion and corrosion of aluminum and the corrosion of other metals exposed to an aqueous liquid in automotive coolant systems. The formulation further inhibits mineral scale. It may be packaged as an ethylene glycol based additive for use in new engines or in a concentrated inhibition package as an additive as for reinhibition of used coolant. The combination of a mixture of ethylene or propylene glycol, a monobasic aliphatic organic acid, azoles, low levels of molybdates, a combination of nitrite and/or nitrate salts, polyvinylpyrrolidone, a hydroxide salt, silicates and/or siloxane stabilized silicates with transition metal compounds provide a synergistic protective effect against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations and varying pH ranges.
Abstract:
A monobasic aliphatic carboxylic acid is used with low levels of molybdate a nd a hydrocarbyl triazole to produce a well balanced corrosion inhibiting formulation with very low solids to minimize potential deposits and exhibit surprising long life characteristics in engine coolant applications.
Abstract:
A monobasic aliphatic carboxylic acid is used with low levels of molybdate and a hydrocarbyl triazole to produce a well balanced corrosion inhibiting formulation with very low solids to minimize potential deposits and exhibit surprising long life characteristics in engine coolant applications.
Abstract:
A monobasic aliphatic carboxylic acid is used with low levels of molybdate and a hydrocarbyl triazole to produce a well balanced corrosion inhibiting formulation with very low solids to minimize potential deposits and exhibit surprising long life characteristics in engine coolant applications.
Abstract:
The present invention relates to a monocarboxylic acid based antifreeze coolant formulation for applications such as for gasoline engines which may be used for inhibition and prevention erosion and corrosion of aluminum and the corrosion of other metals exposed to an aqueous liquid in automotive coolant systems. The formulation further inhibits mineral scale. It may be packaged as an ethylene glycol based additive for use in new engines or in a concentrate d inhibition package as an additive as for reinhibition of used coolant. The combination of a mixture of ethylene or propylene glycol, a monobasic carboxylic organic acid, azoles, and low levels of molybdates provides corrosion resistance. A heavy duty formula more suited for diesel engines al so contains a nitrite salt and/or nitrate salt and a siloxane stabilized silicate, and combinations thereof to provide a synergistic protective effec t against the cavitation corrosion of aluminum in aqueous liquids reducing the corrosion rate and is effective at relatively low concentrations varying pH ranges.