Motor having improved properties

Abstract

The present invention describes a motor designed for Fuel compatibility comprising a lubricant composition comprises at least one ester group containing polymer having a high polarity.

1 : A motor, comprising a lubricant composition,
 wherein the motor is suitable for a flexible-fuel vehicle or a dual-fuel vehicle and the lubricant composition comprises at least one ester group containing polymer having a high polarity.   
     
     
         2 : The motor according to  claim 1 , comprising a compression rate of at least 10:1. 
     
     
         3 : The motor according to  claim 1 , comprising a fuel injection pump. 
     
     
         4 : The motor according to  claim 1 , comprising a multi valve. 
     
     
         5 : The motor according to  claim 1 ,
 wherein the motor meets a requirement of exhaust emission standard Euro 5.   
     
     
         6 : The motor according to  claim 1 , comprising an exhaust gas recirculation. 
     
     
         7 : The motor according to  claim 1 , comprising a secondary-air system. 
     
     
         8 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer is a statistical copolymer comprising at least 7% by weight of dispersing repeat units derived from a dispersing monomer.   
     
     
         9 : The motor according to  claim 8 ,
 wherein the at least one ester group containing polymer is a statistical copolymer comprising at least 7% by weight of dispersing repeat units derived from at least one heterocyclic vinyl compound.   
     
     
         10 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer is a graft copolymer having an nonpolar polymer as a graft base and a dispersing monomer as a graft layer.   
     
     
         11 : The motor according to  claim 10 ,
 wherein the at least one ester group containing polymer comprises at least one heterocyclic vinyl compound as the graft layer.   
     
     
         12 : The motor according to  claim 11   wherein the at least one ester group containing polymer is the graft copolymer comprising from 0.5 to 10% by weight of dispersing repeat units derived from the at least one heterocyclic vinyl compound.   
     
     
         13 : The motor according to  claim 12 ,
 wherein the at least one ester group containing polymer is the graft copolymer comprising from 1 to 5% by weight of dispersing repeat units derived from the at least one heterocyclic vinyl compound.   
     
     
         14 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer has a —CO—NR 2 — peak of 1689 to 1692 cnf 1  as measured by FTIR spectroscopy.   
     
     
         15 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer is selected from the group consisting of a polyalkyl (meth)acrylate (PAMA), a polyalkyl fumerate, a polyalkyl maleate, and a combination thereof.   
     
     
         16 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer has a weight-average molecular weight of from 10 000 to 600 000 g/mol.   
     
     
         17 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer is a graft copolymer comprising a graft base obtained by a process comprising polymerizing a monomer composition comprising:   a) from 0 to 40% by weight, based on a weight of the monomer composition for preparing a nonpolar segment, of an ethylenically unsaturated ester compound of formula (I):   
       
         
           
           
               
               
           
         
         wherein 
         R is hydrogen or methyl, 
         R 1  is a linear or branched alkyl radical having 1 to 6 carbon atoms, and 
         R 2  and R 3  are each independently hydrogen or a group of formula —COOR′ in which R′ is hydrogen or an alkyl group having 1 to 6 carbon atoms, 
         b) from 5 to 100% by weight, based on the weight of the monomer composition for preparing the nonpolar segment, of an ethylenically unsaturated ester compound of formula (II): 
       
       
         
           
           
               
               
           
         
         wherein 
         R is hydrogen or methyl, 
         R 4  is a linear or branched alkyl radical having 7 to 15 carbon atoms, and 
         R 5  and R 6  are each independently hydrogen or a group of the formula —COOR′ in which R″ is hydrogen or an alkyl group having 7 to 15 carbon atoms, 
         c) from 0 to 80% by weight, based on the weight of the monomer composition for preparing the nonpolar segment, of an ethylenically unsaturated ester compound of formula (III): 
       
       
         
           
           
               
               
           
         
         wherein 
         R is hydrogen or methyl, 
         R 7  is a linear or branched alkyl radical having 16 to 30 carbon atoms, and 
         R 8  and R 9  are each independently hydrogen or a group of formula —COOR′″ in which R′″ is hydrogen or an alkyl group having 16 to 30 carbon atoms, and 
         d) from 0 to 50% by weight, based on the weight of the monomer composition for preparing the hydrophobic segments, of a comonomer. 
       
     
     
         18 : The motor according to  claim 1 ,
 wherein the at least one ester group containing polymer comprises at least one heterocyclic vinyl compound selected from the group consisting of 2-vinylpyridine, 3-vinylpyridine, 2-methyl-5-vinylpyridine, 3-ethyl-4-vinylpyridine, 2,3-dimethyl-5-vinylpyridine, vinylpyrimidine, vinylpiperidine, 9-vinylcarbazole, 3-vinylcarbazole, 4-vinylcarbazole, 1-vinylimidazole, N-vinylimidazole, 2-methyl-1-vinylimidazole, N-vinylpyrrolidone, 2-vinylpyrrolidone, N-vinylpyrrolidine, 3-vinylpyrrolidine, N-vinylcaprolactam, N-vinylbutyrolactam, vinyloxolane, vinylfuran, vinylthiophene, vinylthiolane, a vinylthiazole and a hydrogenated vinylthiazole, a vinyloxazole, a hydrogenated vinyloxazole, and a combination thereof.   
     
     
         19 : The motor according to  claim 1 ,
 wherein the lubricant composition comprises at least one additional additive which is not a polymer comprising an ester group having a high polarity.   
     
     
         20 : The motor as claimed in  claim 19 ,
 wherein the at least one additive is a viscosity index improver, a pour point improver, a dispersant, a detergent, a defoamer, a corrosion inhibitor, an antioxidant, an antiwear additive, an extreme pressure additive, a friction modifier, or a combination thereof.   
     
     
         21 : The motor as claimed in  claim 20 ,
 wherein the antiwear additive, the extreme pressure additive, or both is selected from the group consisting of a phosphorous compound, a compound comprising sulfur and phosphorous, a compound comprising sulfur and nitrogen, a sulfur compound comprising elemental sulfur and ¾S-sulfurized hydrocarbon, a sulfurized glyceride and a fatty acid ester, an overbased sulfonate, a chlorine compound, graphite, molybdenum disulfide, and a combination thereof.   
     
     
         22 : A process for producing an emulsion stabilizer in a lubricant, comprising:
 contacting the lubricant with a polymer comprising an ester group having a high polarity.