Lubricating composition containing an oxyalkylated hydrocarbyl phenol

Abstract

The invention provides lubricating composition comprising: an oil of lubricating viscosity, and an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substituted with at least one aliphatic hydrocarbyl group of 40 to 96 carbon atoms, and wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups. The invention further relates to a method of lubricating a mechanical device (such as an internal combustion engine) with the lubricating composition. The invention further relates to the use of the oxyalkylated hydrocarbyl phenol in the lubricating composition to a passenger car internal combustion engine at least one of (i) control of fuel economy, (ii) control of corrosion, (iii) cleanliness, and (iv) control of bore wear.

1 - 29 . (canceled) 
     
     
         30 . A lubricating composition comprising: an oil of lubricating viscosity, and an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups,
 wherein the oxyalkylated hydrocarbyl phenol is represented by formula:   
       
         
           
           
               
               
           
         
         wherein each R 2  is independently hydrogen or a hydrocarbyl group of 1 to 6 carbon atoms; 
         R 3  is hydrogen, a hydrocarbyl group of 1 to 24 carbon atoms, or an acyl group represented by —C(═O)R 5 , 
         R 5  is a hydrocarbyl group of 1 to 24 carbon atoms; 
         each R 4  is independently a hydrocarbyl group, wherein at least one R 4  contains 35 to 140 carbon atoms; 
         n=1 to 10; and m=1 to 3. 
       
     
     
         31 . The composition according to  claim 30 , wherein m=1; and
 R 4  is a hydrocarbyl group of 35 to 140 carbon atoms.   
     
     
         32 . The composition according to  claim 31 , wherein n=2 to 8;
 one R 2  is methyl, and the second R 2  is hydrogen; and   R 4  is a polyalk(en)yl group.   
     
     
         33 . The composition of  claim 31 , wherein the R 4  group is located on the phenol in the para-position relative to the oxyalkylated group. 
     
     
         34 . The composition of  claim 31 , wherein R 4  is a polyisobutenyl group. 
     
     
         35 . The composition of  claim 30 , wherein the oxyalkylated hydrocarbyl phenol is present in an amount ranging from 0.1 wt % to 5 wt % of the lubricating composition. 
     
     
         36 . The composition of  claim 30  further comprising an overbased detergent, wherein the overbased detergent is selected from the group consisting of non-sulphur containing phenates, sulphur containing phenates, sulphonates, salixarates, salicylates, and mixtures thereof. 
     
     
         37 . The composition of  claim 36 , wherein the overbased detergent is selected from the group consisting of non-sulphur containing phenates, sulphur containing phenates, sulphonates and mixtures thereof. 
     
     
         38 . The composition of  claim 36 , wherein the overbased detergent is present at 3 wt % to 8 wt of the lubricating composition. 
     
     
         39 . The composition of  claim 36 , wherein the overbased detergent is present at 0.15 wt % to less than 3 wt % of the lubricating composition. 
     
     
         40 . The composition of  claim 30 , wherein the lubricating composition is comprises at least one of (i) a sulphur content of 0.5 wt % or less, (ii) a phosphorus content of 0.15 wt % or less, and (iii) a sulphated ash content of 0.5 wt % to 1.5 wt %. 
     
     
         41 . The composition of  claim 40 , wherein the lubricating composition comprises: (i) a sulphur content of 0.2 wt % to 0.4 wt % or less, (ii) a phosphorus content of 0.08 wt % to 0.15 wt %, and (iii) a sulphated ash content of 0.5 wt % to 1.5 wt %. 
     
     
         42 . A lubricating composition comprising:
 (i) an oil of lubricating viscosity,   (ii) an oxyalkylated hydrocarbyl phenol, wherein the oxyalkylated hydrocarbyl phenol is substantially free of aromatic hydrocarbyl groups,   
       wherein the oxyalkylated hydrocarbyl phenol is represented by formula: 
       
         
           
           
               
               
           
         
       
       wherein each R 2  is independently hydrogen or a hydrocarbyl group of 1 to 6 carbon atoms; 
       R 3  is hydrogen, a hydrocarbyl group of 1 to 24 carbon atoms, or an acyl group represented by —C(═O)R 5 , 
       R 5  is a hydrocarbyl group of 1 to 24 carbon atoms; 
       R 4  is a polyisobutenyl group having a number average molecular weight of 550 to 2300; and 
       n=1 to 10; and
 (iii) an overbased detergent, wherein the overbased detergent is selected from the group consisting of non-sulphur containing phenates, sulphur containing phenates, sulphonates, salixarates, salicylates, and mixtures thereof. 
 
     
     
         43 . The composition of  claim 42 , wherein the overbased detergent is selected from the group consisting of non-sulphur containing phenates, sulphur containing phenates, sulphonates and mixtures thereof. 
     
     
         44 . The composition of  claim 43 , wherein the overbased detergent is present at 3 wt % to 8 wt of the lubricating composition. 
     
     
         45 . The composition of  claim 43 , wherein the overbased detergent is present at 0.15 wt % to less than 3 wt % of the lubricating composition. 
     
     
         46 . The composition of  claim 43 , wherein the lubricating composition is comprises at least one of (i) a sulphur content of 0.5 wt % or less, (ii) a phosphorus content of 0.15 wt % or less, and (iii) a sulphated ash content of 0.5 wt % to 1.5 wt %. 
     
     
         47 . The composition of  claim 46 , wherein the lubricating composition comprises: (i) a sulphur content of 0.2 wt % to 0.4 wt % or less, (ii) a phosphorus content of 0.08 wt % to 0.15 wt %, and (iii) a sulphated ash content of 0.5 wt % to 1.5 wt %. 
     
     
         48 . The composition of  claim 43 , wherein n=2 to 5 and one R 2  is methyl and the second R 2  is hydrogen. 
     
     
         49 . A method of lubricating an internal combustion engine comprising supplying to the internal combustion engine a lubricating composition of  claim 30 . 
     
     
         50 . The method of  claim 49 , wherein the internal combustion engine is a diesel fueled internal combustion engine. 
     
     
         51 . The method of  claim 49 , wherein the internal combustion engine is a gasoline fueled internal combustion engine.