| 摘要 |
PURPOSE:A composition that is made by adding a novel metal inactivator of a specific tetrazole derivative to a mineral oil or synthetic oil of a specific viscosity, thus being suitably used as an additive for a lubricant such as turbine oil, operation oil or gear oil. CONSTITUTION:The objective composition is obtained by adding (A) 0.001- 10.0wt% of a metal inactivator of tetrazole derivative of formula I and/or II (R1- R3 are H, 1-20C alkyl, 2-20C alkenyl) to (B) a mineral and/or synthetic oil of 10-10,000cst dynamic viscosity at 40 deg.C and of more than 80 viscosity index. The compound of formula I is obtained, preferably by the Mannich reaction between tetrazole, a secondary amine satisfying the condition of R1 and R2 and formaldehyde and the one of formula II, by the Mannich reaction between tetrazole, a primary amine satisfying the condition of R3 and formaldehyde. |
