Grease composition

Abstract

A grease composition includes: at least one mineral-based, synthetic-based, or natural-based oil, a thickener predominantly consisting of at least one simple or complex aluminium soap; at least one molybdenum dithiocarbamate; and graphite. The grease can be used for the lubrication of open systems.

1 .- 12 . (canceled) 
     
     
         13 . A grease composition comprising:
 (a) one or more base oils of mineral, synthetic or natural origin;   (b) a thickener comprising mainly of one or more simple or complex aluminium soaps;   (c) one or more molybdenum dithiocarbamates; and   (d) Graphite.   
     
     
         14 . The grease composition according to  claim 13  comprising as base oils (a) one or more mineral base oils, alone or in a mixture. 
     
     
         15 . The grease composition according to  claim 13  comprising at least one complex aluminium soap as thickener (b). 
     
     
         16 . The grease composition according to  claim 13  where the simple or complex aluminium soap(s) constitutes at least 80% by weight of the thickener (b) in the composition. 
     
     
         17 . The grease composition according to  claim 13  comprising at least one additive chosen from: anti-wear and extreme pressure additives. 
     
     
         18 . The grease composition according to  claim 13  comprising at least one polymer. 
     
     
         19 . The grease composition according to  claim 13  in which the molybdenum content is comprised between 500 and 5000 ppm. 
     
     
         20 . The grease composition according to  claim 13  wherein the content by mass of the graphite is comprised between 0.5 and 3%. 
     
     
         21 . A method for lubricating open systems, wherein the open systems are brought into contact with a grease composition comprising:
 (a) one or more base oils of mineral, synthetic or natural origin;   (b) a thickener comprising mainly of one or more simple or complex aluminium soaps;   (c) one or more molybdenum dithiocarbamates; and   (d) Graphite.   
     
     
         22 . The method according to  claim 21 , wherein the open systems are used in the field of at least one of: industry or public works. 
     
     
         23 . An open mechanical movement system to which a grease composition is applied, the grease composition comprising:
 (a) one or more base oils of mineral, synthetic or natural origin;   (b) a thickener comprising mainly of one or more simple or complex aluminium soaps;   (c) one or more molybdenum dithiocarbamates; and   (d) Graphite.   
     
     
         24 . The open mechanical movement system of  claim 23 , further comprising at least one of the following unsealed components to which the grease composition is applied:
 (a) bearings;   (b) gears;   (c) cables; and   (d) chains.