Novel boron-containing compositions useful as lubricant additives
申请人:The Lubrizol Corporation
公开号:EP0067002A1
公开(公告)日:1982-12-15
Reaction products of boric acid or boron trioxide with an epoxide having at least 8 carbon atoms (especially a straight-chain aliphatic epoxide) are useful anti-wear, friction modifying and rust inhibiting additives for lubricants. They are particularly useful in lubricants containing relatively large amounts of basic alkaline earth metal phenates or salicylates and/or free hydroxy group-containing alkenyisuccinic acid ester dispersants.
A composition of an oil of lubricating viscosity, an antioxidant, an anti-nitration agent, preferably being a hydrocarbylamine phosphate salt and optionally a borated product of an epoxide or the reactive equivalent of an epoxide, provides a desirable lubricant for diesel or natural gas-fueled engines. The composition is substantially free from metals and preferably substantially free from phosphorus. The amount of the antioxidant and the anti-nitration agent are sufficient to reduce the amount of varnish formation in a natural gas engine.
A composition for providing anti-shudder friction durability performance for automatic transmissions
申请人:The Lubrizol Corporation
公开号:EP0747464A1
公开(公告)日:1996-12-11
A composition for use in lubricants and function fluids to provide improved anti-shudder and shudder durability properties to an automatic transmission. The composition comprises alkoxylated fatty amines as well as a mixture of other friction modifiers.
Antiwear enhancing composition for lubricants and functional fluids
申请人:The Lubrizol Corporation
公开号:EP0769546A2
公开(公告)日:1997-04-23
This invention relates to a composition, comprising: (A) a boron-containing overbased material; (B) a phosphorus acid, ester or derivative therof; and (C) a borated epoxide or borated fatty acid ester of glycerol. In one embodiment the inventive composition further comprises (D) a thiocarbamate. These compositions are useful in providing lubricants and functional fluids, particularly automatic transmission fluids, with enhanced antiwear properties. In one embodiment these compositions also provide such lubricants and functional fluids with enhanced extreme-pressure and/or friction-modifying.
Functional fluid compositions having improved frictional and anti-oxidation properties
申请人:The Lubrizol Corporation
公开号:EP0787791A2
公开(公告)日:1997-08-06
A composition containing self condensation reaction products of alkylthio alkanols and dispersants which are found to have utility in lubricating/functional fluids.