High Performance Lubricating Compositions

Abstract

An oleaginous corrosion-resistant lubricating composition comprising at least one poly-alpha olefin synthetic oil and effective amounts of metal salts of sulfonic acids metal salts of carboxylic acids, metal salts of mixtures or combinations of sulfonic and carboxylic acids, alkylated aromatic compounds as solubility modifiers, pour-point depressants, at least one antioxidant, and metal deactivator compounds.

1 . A corrosion-preventing free-flowing lubricating composition consisting essentially of, in parts by weight of:
 70 to 85 parts of poly-alpha olefin synthetic lubricating oil,   5.0 to 15 parts of at least one oil soluble corrosion inhibitor selected from the group consisting of sulfonic acid metal compounds, carboxylic acid metal compounds and compounds derived from the stoichiometric reaction of a combination of sulfonic acids and carboxylic acids with a metal compound.   5.0 to 15 parts of an oil soluble alkylated aromatic compound,   0.1 to 1.0 parts of a pour-point consisting essentially of a heavy-paraffinic compound,   0.1 to 2.0 parts of an oil soluble antioxidant, and 0.1 to 0.5 parts of a metal deactivator compound.   
     
     
         2 . A corrosion-preventing free-flowing lubricating composition consisting essentially of from about, in parts by weight,
 70 to 85 parts of at least one poly-alpha olefin synthetic lubricating oil,   5.0 to 15 parts of at least one sulfonic metal compound,   5.0 to 15 parts of an oil soluble alkylated aromatic compound,   0.1 to 1.0 parts of a pour-point consisting essentially of a heavy-paraffinic compound,   0.1 to 2.0 parts of an oil soluble antioxidant, and 0.1 to 0.5 parts of a metal deactivator compound.   
     
     
         3 . A corrosion-preventing free-flowing lubricating composition consisting essentially of from about, in parts by weight,
 70 to 85 parts of at least one poly-alpha olefin synthetic lubricating oil,   5.0 to 15 parts of at least one carboxylic acid metal compound,   5.0 to 15 parts of at least an oil soluble alkylated aromatic compound,   0.1 to 1.0 parts of a pour-point consisting essentially of a heavy-paraffinic compound,   0.1 to 2.0 parts of an oil soluble antioxidant, and 0.1 to 5.0 parts of a metal deactivator compound.   
     
     
         4 . A corrosion-preventing free-flowing lubricating composition consisting essentially of from about, in parts by weight,
 70 to 85 parts of at least one poly-alpha olefin synthetic lubricating oil,   5.0 to 15 parts of a compound derived from the stoichiometric reaction of a sulfonic acid and a carboxylic acid with a metal compound,   5.0 to 15 parts of an oil soluble alkylated aromatic compound,   0.1 to 1.0 parts of a pour-point consisting essentially of a heavy-paraffinic compound,   0.1 to 2.0 parts of an oil soluble antioxidant, and 0.1 to 0.5 parts of a metal deactivator compound.   
     
     
         5 . The composition of  claim 1  wherein the free-flowing lubricant is a mixture of poly-alpha olefin oils having different viscosities and boiling points. 
     
     
         6 . The composition of  claim 1  wherein the free-flowing lubricant is a mixture of poly-alpha olefin lubricating oils having kinematic viscosity of 1509 at −40° C. 
     
     
         7 . The composition of  claim 1  wherein the pour-point depressant consists essentially of hydrated distillate heavy-paraffinic compounds. 
     
     
         8 . The composition of  claim 1  wherein the sulfonic acid compound is an alkaline earth metal compound of a dialkylnaphthalene sulfonic acid. 
     
     
         9 . The composition of  claim 8  wherein the dialkylnaphthalene sulfonic acid is a dialkylnaphthalene sulfonic acid metal compound wherein the alkyl group of said sulfonic acid has two to twelve carbon atoms. 
     
     
         10 . The composition of  claim 1  wherein the pour-point is an acrylic compound. 
     
     
         11 . A process of preventing corrosion of metal which comprises applying an effective amount of a corrosion-preventing free-flowing lubricating composition on said metal; said composition consisting essentially of, in parts by weight,
 70 to 85 parts of a poly-alpha olefin lubricating oil,   5 to 15 parts of at least one corrosion inhibitor selected from the group consisting of sulfonic acid metal compounds, carboxylic acid metal compounds and a compound derived from the stoichiometric reaction of a sulfonic acid and a carboxylic acid with a metal compound.   5.0 to 15 parts of an oil soluble alkylated-aromatic compound   0.1 to 1.0 parts of a pour-point consisting essentially of a heavy-paraffinic compound.   0.1 to 2.0 parts of an oil soluble antioxidant and 0.1 to 0.5 parts of a metal deactivator compound.   
     
     
         12 . The process of  claim 11  wherein the poly-alpha olefin synthetic oil is a mixture of synthetic oils having different viscosities. 
     
     
         13 . The process of  claim 11  wherein the pour-point is a hydrotreated distillate heavy paraffinic compound. 
     
     
         14 . The process of  claim 11  wherein the corrosion inhibitor is an alkaline earth metal compound of an alkylnaphalene sulfonic acid. 
     
     
         15 . The process of  claim 11  wherein the corrosion inhibitor is an alkaline earth carboxylic acid metal compound. 
     
     
         16 . The process of  claim 11  wherein the pour-point is an ester of methacrylic acid. 
     
     
         17 . The process of  claim 11  wherein the antioxidant is diphenylamine. 
     
     
         18 . The process of  claim 11  wherein the lubricating composition has a viscosity of about 1509 at −40° C.