Preparation of a molybdenum amide additive composition and the lubricating oil compositions containing same

Abstract

The invention is directed to oil soluble additive compositions, lubricating oil compositions, and additive concentrates comprising the salt of (1) a molybdenum oxide, sulfide, or oxysulfide and (2) an amide reaction product of a carboxylic acid component and a polyamine component wherein the charge mole ratio (CMR) of the carboxylic acid component to the polyamine component is about 2:1 to 1:1.

1 . An oil soluble additive composition comprising a salt of:
 (1) a molybdenum component which is a molybdenum oxide, sulfide, or oxysulfide of the general formula MoO x S y  wherein x≧0, y≧0, and 12≧(x+y)≧2; and   (2) an amide wherein said amide comprises the reaction product of a carboxylic acid component and a polyamine component, wherein the charge mole ratio of the carboxylic acid component to the polyamine component is about 2:1 to 1:1.   
   
   
       2 . The oil soluble additive composition of  claim 1 , wherein the molybdenum component is a molybdenum oxide. 
   
   
       3 . The oil soluble additive composition of  claim 1 , wherein the molybdenum component is a molybdenum oxysulfide. 
   
   
       4 . The oil soluble additive composition of  claim 1 , wherein the molybdenum component is a molybdenum sulfide. 
   
   
       5 . The oil soluble additive composition of  claim 1 , wherein the amide contains at least one basic nitrogen. 
   
   
       6 . The oil soluble additive composition of  claim 1 , wherein the carboxylic acid component is a carboxylic acid, carboxylic acid salt, carboxylic acid anhydride, carboxylic acid ester, or mixtures thereof. 
   
   
       7 . The oil soluble additive composition of  claim 1 , wherein the carboxylic acid component is a fatty acid. 
   
   
       8 . The oil soluble additive composition of  claim 1 , wherein the carboxylic acid component is isostearic acid, stearic acid, or mixtures thereof. 
   
   
       9 . The oil soluble additive composition of  claim 1 , wherein the charge mole ratio of the carboxylic acid component to the polyamine component is about 1.7:1 to 1:1. 
   
   
       10 . The oil soluble additive composition of  claim 1 , wherein the polyamine is a polyalkylenepolyamine of the general formula
   H 2 N(—R—NH) n —H   
     and wherein R is an alkylene group of 2-3 carbon atoms and n is an integer of from 1 to 11. 
   
   
       11 . The oil soluble composition of  claim 1 , wherein the polyamine is tetraethylenepentamine (TEPA), diethylenetriamine (DETA), ethylenediamine (EDA), or mixtures thereof. 
   
   
       12 . The oil soluble additive composition of  claim 1 , wherein the mole ratio of molybdenum to sulfur is about 1:0 to 1:8. 
   
   
       13 . The oil soluble additive composition of  claim 1 , wherein the molybdenum component is a molybdenum sulfide or oxysulfide and the mole ratio of molybdenum to sulfur is about 1:1 to 1:4. 
   
   
       14 . The oil soluble additive composition of  claim 1 , wherein the molybdenum component is sulfurized. 
   
   
       15 . A lubricating oil composition comprising:
 (1) an oil of lubricating viscosity and   (2) an oil soluble additive composition comprising a salt of:
 (a) a molybdenum component which is a molybdenum oxide, sulfide, or oxysulfide of the general formula MoO x S y  wherein x≧0, y≧0, and 12≧(x+y)≧2; and 
 (b) an amide wherein said amide comprises the reaction product of a carboxylic acid component and a polyamine component, wherein the charge mole ratio of the carboxylic acid component to the polyamine component is about 2:1 to 1:1. 
   
   
   
       16 . The lubricating oil composition of  claim 15 , wherein the molybdenum content of the lubricating oil composition is between about 50 ppm and 5000 ppm. 
   
   
       17 . The lubricating oil composition of  claim 15 , wherein the oil soluble additive composition content is between 0.05 to 15% by weight. 
   
   
       18 . The lubricating oil composition of  claim 15 , wherein the charge mole ratio of the carboxylic acid component to the polyamine component is about 1.7:1 to 1:1. 
   
   
       19 . A process for preparing an oil soluble additive composition which comprises reacting:
 (1) a molybdenum component which is, or is capable of forming, a molybdenum oxide, sulfide, or oxysulfide; and   (2) an amide wherein said amide comprises the reaction product of a carboxylic acid component and a polyamine component, wherein the charge mole ratio of the carboxylic acid component to the polyamine component is about 2:1 to 1:1 to form a molybdenum-containing reaction product.   
   
   
       20 . The process of  claim 19 , wherein the molybdenum-containing reaction product is sulfurized in an amount sufficient to provide 0.01 to 12 atoms of sulfur per atom of molybdenum. 
   
   
       21 . The process of  claim 19 , wherein said reaction of said molybdenum component and said amide is in the presence of a polar promoter. 
   
   
       22 . The process of  claim 21 , wherein the polar promoter is selected from the group consisting of 1,3-propanediol, 1,4-butanediol, diethylene glycol, butyl cellosolve, propylene glycol, 1,4-butyleneglycol, methyl carbitol, ethanolamine, ammonium hydroxide, alkyl ammonium hydroxide, metal hydroxide, N-methyl-diethanol amine, dimethyl formamide, N-methyl acetamide, dimethyl acetamide, methanol, ethylene glycol, dimethyl sulfoxide, hexamethyl phosphoramide, tetrahydrofuran, water, inorganic acid, and mixtures thereof. 
   
   
       23 . The process of  claim 22 , wherein the polar promoter is water. 
   
   
       24 . The process of  claim 20 , wherein the sulfurization is carried out with a sulfur source selected from sulfur, hydrogen sulfide, phosphorus pentasulfide, R2Sx where R is hydrocarbyl, and x is at least 2, inorganic sulfides or inorganic polysulfides, thioacetamide, thiourea, mercaptans of the formula RSH where R is hydrocarbyl, or a sulfur-containing antioxidant. 
   
   
       25 . The process of  claim 19 , wherein the molybdenum component is selected from the group consisting of molybdic acid, ammonium molybdate, sodium molybdate, potassium molybdate, metal molybdates, MoOC14, MoO2Br2, Mo2O3C16, molybdenum trioxide, and mixtures thereof. 
   
   
       26 . The process of  claim 19 , wherein the molybdenum component molybdenum trioxide. 
   
   
       27 . The process of  claim 19 , wherein the carboxylic acid component comprises a fatty acid. 
   
   
       28 . The process of  claim 19 , wherein the carboxylic acid component comprises isostearic acid, stearic acid, or mixtures thereof. 
   
   
       29 . The process of  claim 19 , wherein the polyamine component comprises a polyalkylenepolyamine represented by the general formula
   H 2 N(—R—NH) n —H   
     and wherein R is an alkylene group of 2-3 carbon atoms and n is an integer of from 1 to 11. 
   
   
       30 . The process of  claim 19 , wherein the polyamine component is tetraethylenepentamine (TEPA), diethylenetriamine (DETA), ethylenediamine (EDA), or mixtures thereof. 
   
   
       31 . The product prepared by the process of  claim 19 . 
   
   
       32 . An oil soluble additive composition comprising the reaction product of:
 (1) a molybdenum component which is, or is capable of forming, a molybdenum oxide, sulfide, or oxysulfide of the general formula MoO x S y  wherein x≧0, y≧0, and 12≧(x+y)≧2; and   (2) an amide wherein said amide comprises the reaction product of a carboxylic acid component and a polyamine component, wherein the charge mole ratio of the carboxylic acid component to the polyamine component is about 2:1 to 1:1.