| 摘要 |
<p>A lubricating oil compsn. comprises (A) a base oil, (B) an amine of general formulae (I) or R3-NH-R4 (II), and (C) at least one cpd. from sulphonates, phenates and salicylates. In formulae, n = 2-6; R1 and R2 are H, 5-30C alkyl, alkenyl, cycloalkyl, alkylaryl, aralkyl or aryl gps.; R1 and R2 are not both H at the same time; R3 and R4 are 4-30C alkyl, alkenyl, cycloalkyl, alkylaryl, aralkyl or aryl gps. The amts. of (B) and (C) are 0.1-5wt.% and 0.1-10wt.%, respectively. The base oil (A) is a sulphur type oil. The oil compsn. opt. contains (D) an oleaginous agent (0.01-40wt.%) besides (A), (B) and (C).</p> |
