Metal corrosion inhibitive coolant composition containing alkenylsuccinic acid or alkali metal salt thereof
AssigneeCCI Corporation
InventorsYuji Miyake, Yasuaki Mori
Life of this patent
Estimating the term…
Abstract
An effective metal corrosion inhibitive coolant composition having an excellent pH stabilizing property is disclosed, comprising a glycol as a main ingredient, at least one C 4-C 16 alkenylsuccinic acid or its alkali metal salt in an amount of 0.5-5.0 wt. %, and at least one benzoic acid or its derivative in an amount of 0.5-5.0 wt. %. This coolant composition is further characterized in that no phosphates, amine salts, silicates, borates, or nitrites are contained to avoid their detrimental side effects.
Claims6
A coolant composition consisting essentially of a glycol as a main ingredient, at least one C 4 to C 16 alkenylsuccinic acid or alkali metal salt thereof in an amount of 0.5-5.0 wt. %, and at least one benzoic acid or derivative thereof in an amount of 0.5-5.0 wt. %, further characterized in that no phosphates, amine salts, silicates, borates, or nitrites are included.
Dependencies are inferred from the claim text.