| abstract |
(57) [Summary] The molybdate dispersant composition represented by the formula (R 1 -NR 2 R 3 H + ) m-n X n (MoHPA) m- gives a lubricant good friction properties. In this formula, R 1 —NR 2 R 3 represents an amine-containing dispersant, R 1 is a group that imparts dispersant properties to the dispersant composition, and R 2 and R 3 are each independently hydrogen, a hydrocarbyl group or additional R 1 groups,; X is hydrogen, a monovalent metal ion, a single valence of a polyvalent metal ion, an ammonium ion or amine cation, m is 3 or 4 When m is 3, n is 0 to about 2.5, and when m is 4, n is 0 to about 3.5, and (MoHPA) m- is the charge m Molybdenum heteropolyacid anion. |