Additives for lubricating oils, and lubricating oils containing such additives
申请人:UNION OIL COMPANY OF CALIFORNIA
公开号:EP0314843A1
公开(公告)日:1989-05-10
Additives for lubricating oils, especially automatic transmission fluids, are disclosed comprising a heterocyclic compound containing boron and of the formula
wherein R is inorganic or organic and R₁ and R₂ are the same or different organic radicals, in admixture with or as the reaction product of reaction with an ester of a polyhydric alcohol. The boron-containing heterocyclic compound may contain sulfur. It may comprise the product of reacting together ammonia or a primary amine, an aliphatic or aromatic epoxide and a boric acid in a ratio of 1: 2: 1. Lubricating oils and transmission fluids containing these additives are also disclosed.
Modified advanced epoxy resins are prepared by reacting (A) an advanced epoxy resin prepared by reacting (1) an epoxy resin having at least one aromatic ring, an average of more than one, but not more than about 2 vicinal epoxy groups per molecule and which contains at least one oxyalkylene or substituted oxyalkylene group per molecule; with (2) a dihydric phenol; with (B) a monoamine. Curable compositions comprising the modified advanced epoxy resin and cured products resulting from curing the curable compositions are also disclosed.