Lubricant additive composition

Abstract

A lubricant additive composition includes oil soluble metal salts of inorganic and organic acids, and abrasive particles. Use of a lubricant additive composition includes oil soluble metal salts of inorganic and organic acids abrasive particles for wear protection of friction surfaces.

1 . Lubricant additive composition comprising oil soluble metal salts of inorganic and organic acids, wherein the additive composition comprises from 0.005 wt % to 0.1 wt %, preferably from 0.01 wt % to 0.05 wt %, most preferably from 0.01 wt % to 0.03 wt % abrasive particles. 
     
     
         2 . Lubricant additive composition according to  claim 1 , wherein the average diameter size of abrasive particles ranges from 0.5 μm to 20 μm, preferably from 1 μm to 10 μm, most preferably from 1 μm to 3 μm. 
     
     
         3 . Lubricant additive composition according to  claim 1 , wherein abrasive particles have a hardness of at least 7 on the Mohs scale. 
     
     
         4 . Lubricant additive composition according to  claim 1 , wherein abrasive particles comprise carbonates, nitrides, carbides and/or oxides of elements of boron, carbon and/or alkaline earth metal groups. 
     
     
         5 . Lubricant additive composition according to  claim 1 , wherein the additive composition comprises at least one of the following: an aliphatic alcohol, a succinimide derivative, an aromatic amine, an epoxy resin and/or a 2-iminosubstituted indoline. 
     
     
         6 . Use of a lubricant additive composition comprising oil soluble metal salts of inorganic and organic acids and from 0.005 wt % to 0.1 wt %, preferably from 0.01 wt % to 0.05 wt %, most preferably from 0.01 wt % to 0.03 wt % abrasive particles for wear protection of friction surfaces. 
     
     
         7 . Use of a composition according to  claim 6 , wherein the average diameter size of abrasive particles ranges from 0.5 μm to 20 μm, preferably from 1 μm to 10 μm, most preferably from 1 μm to 3μm. 
     
     
         8 . Use of a composition according to  claim 6 , wherein abrasive particles have a hardness of at least 7 on the Mohs scale. 
     
     
         9 . Use of a composition according to  claim 6 , wherein the additive composition comprises at least one of the following: an aliphatic alcohol, a succinimide derivative, an aromatic amine, an epoxy resin and/or a 2-iminosubstituted indoline. 
     
     
         10 . A method for wear protection of friction surfaces comprising
 applying to friction surfaces a lubricant comprising from 1 wt % to 5 wt % additive composition, said additive composition comprising oil soluble metal salts of inorganic and organic acids and from 0.005 wt % to 0.1 wt %, preferably from 0.01 wt % to 0.05 wt %, most preferably from 0.01 wt % to 0.03 wt % abrasive particles.