Additive composition

Abstract

A release additive composition including at least one dispersant viscosity index improver present in a form chosen from a semi-solid and a solid is disclosed.

1 . A release additive composition comprising at least one dispersant viscosity index improver present in a form chosen from a solid and a semi-solid.  
     
     
         2 . The composition of  claim 1 , wherein the at least one dispersant viscosity index improver is a solid.  
     
     
         3 . The composition of  claim 2 , wherein the at least one dispersant viscosity index improver is a semi-solid.  
     
     
         4 . The composition of  claim 1 , wherein the at least one dispersant viscosity index improver has a number average molecular weight from about 700 to about 500,000.  
     
     
         5 . The composition of  claim 1 , wherein the at least one dispersant viscosity index improver has a number average molecular weight from about 700 to about 100,000.  
     
     
         6 . The composition of  claim 1 , wherein the at least one dispersant viscosity index improver has a degree of graft ranging from about 1.0 to about 3.0.  
     
     
         7 . The composition of  claim 1 , wherein the at least one dispersant viscosity index improver comprises an amine chosen from N-phenyl-phenylene diamine and amino guanidine bicarbonate.  
     
     
         8 . The composition of  claim 1 , further comprising an antioxidant.  
     
     
         9 . The composition of  claim 8 , wherein the antioxidant is a semi-solid.  
     
     
         10 . The composition of  claim 8 , wherein the antioxidant is an alkyl-substituted phenol.  
     
     
         11 . A lubricant composition comprising: 
 a major amount of a base oil; and    a minor amount of a release additive composition comprising at least one dispersant viscosity index improver present in a form chosen from a solid and a semi-solid.    
     
     
         12 . The lubricant composition of  claim 11 , wherein the base oil is selected from the group consisting of mineral oils, vegetable oils, paraffinic oils, naphthenic oils, aromatic oils, synthetic oils, derivatives thereof, and mixtures thereof.  
     
     
         13 . A lubrication system comprising at least one release additive composition according to  claim 1  located in at least one of a filter, drain pan, oil bypass loop, canister, housing, reservoir, pockets of a filter, canister in a filter, mesh in a filter, canister in a bypass system, mesh in a bypass system, and the like.  
     
     
         14 . The system of  claim 13 , wherein the at least one dispersant viscosity index improver is a semi-solid.  
     
     
         15 . The system of  claim 13 , wherein the release additive composition is located in the filter.  
     
     
         16 . The system of  claim 13 , wherein the filter comprises at least one pocket, and wherein each of the at least one pocket comprises the at least one release additive composition.  
     
     
         17 . The system of  claim 16 , wherein each of the at least one pocket comprises a different at least one release additive composition.  
     
     
         19 . A method for improving the drain interval of engine oil comprising adding to a lubrication system a release additive composition comprising at least one dispersant viscosity index improver present in a form chosen from a solid and a semi-solid.  
     
     
         20 . The method of  claim 19 , further comprising an antioxidant.