Compound comprising polyamine, carboxylate and boron functionalities and its use as a lubricant additive

Abstract

A product resulting from the reaction of at least: an alkali or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group and optionally overbased, a boron compound, an amine component selected from a di-fatty-alkyl(ene) polyalkylamine composition including one or more polyalkylamines of formulae (I) or (II). A lubricant composition including this product. Use of this product as a lubricant for two-stroke marine engines and four-stroke marine engines, more preferably two-stroke marine engines.

1 - 14 . (canceled) 
     
     
         15 . A product resulting from the reaction of at least:
 an alkali or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group and optionally overbased,   a boron compound,   an amine component selected from:   a di-fatty-alkyl(ene) polyalkylamine composition comprising one or more polyalkylamines of formulae (I) or (II):   
       
         
           
           
               
               
           
         
         wherein,
 each R is, independent of the other R, an alkyl moiety or an alkylene moiety with 4 to 30 carbon atoms, which is linear or branched, 
 n and z are independent of each other either 0, 1, 2, or 3, and 
 when z is superior than 0 then o and p are independent of each other either 0, 1, 2, or 3, 
 
         or derivatives thereof, 
         whereby said polyalkylamine composition comprises at least 3% by weight of branched compounds of formula (I) or (II), with regards to the total weight of polyalkylamine compounds (I) and (II) in the composition, branched compound signifying that: 
         in formula (I) at least one of n and z are superior or equal to 1, 
         in formula (II) n is superior or equal to 1. 
       
     
     
         16 . The product according to  claim 15 , wherein the alkali or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group, is selected from the group consisting of mono-alk(en)yl substituted salicylate salts, di-alk(en)yl substituted salicylate salts, carboxylate functionalized calixarenes salts, and mixtures thereof. 
     
     
         17 . The product according to  claim 15 , wherein the alkali or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group, is chosen from the alkali and/or alkaline earth metal salts of the compounds of formula (III): 
       
         
           
           
               
               
           
         
         wherein: 
         X represents a hydrocarbyl with 1 to 50 carbon atoms, and X can comprise one or more heteroatoms,
 a is an integer, a represents 0, 1 or 2. 
 
       
     
     
         18 . The product according to  claim 17 , wherein the alkali or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group, is chosen from the alkali and/or alkaline earth metal salts of the compounds of formula (IIIA): 
       
         
           
           
               
               
           
         
       
     
     
         19 . The product according to  claim 18 , wherein the alkali and/or alkaline earth metal hydroxybenzoate compound is chosen from alkali and/or alkaline earth metal salicylates. 
     
     
         20 . The product according to  claim 15 , wherein the boron compound is selected from the group consisting of boric acid, boric acid complexes, boric oxide, a trialkyl borate in which the alkyl groups comprise independently from 1 to 4 carbon atoms, a C 1 -C 12  alkyl boronic acid, a C 1 -C 12  dialkyl boric acid, a C 6 -C 12  aryl boric acid, a C 6 -C 12  diaryl boric acid, a C 7 -C 12  aralkyl boric acid, a C 7 -C 12  diaralkyl boric acid, and products deriving from these by substitution of an alkyl group by one or more alkoxy unit. 
     
     
         21 . The product according to  claim 20 , wherein the boron compound is boric acid. 
     
     
         22 . The product according to  claim 15 , wherein the polyalkylamine composition comprises at least 4% w/w of branched compounds of formula (I) or (II), with regards to the total weight of polyalkylamine compounds (I) and (II) in the composition, branched compound signifying that:
 in formula (I) at least one of n or z are superior or equal to 1,   in formula (II) n is superior or equal to 1.   
     
     
         23 . The product according to  claim 15 , wherein the polyalkylamine composition comprises at least 5% by weight, with regards to the total weight of compounds (I) and (II), of products of formulae (I) and (II) with a linear structure, linear meaning n is 0 in formulae (I) and (II) and z is 0 in formula (I). 
     
     
         24 . The product according to  claim 15 , wherein the polyalkylamine composition further comprises derivatives of polyalkylamines of formula (I) or (II), said derivatives are alkoxylates which are optionally methylated. 
     
     
         25 . The product according to  claim 15 , wherein the polyalkylamine composition further comprises derivatives of polyalkylamines of formula (I) or (II), said derivatives are methylated. 
     
     
         26 . The product according to  claim 15 , wherein each R is, independent of the other R, selected from linear or branched alkyl or alkenyl groups comprising 8 to 22 carbon atoms. 
     
     
         27 . The product according to  claim 26 , wherein R groups are derived from animal and vegetal oils and fats, and mixtures thereof. 
     
     
         28 . The product according to  claim 27 , wherein R groups are derived from tallow oil. 
     
     
         29 . The product according to  claim 15 , wherein, in the reaction with the boron compound and the amine component, the alkali and/or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group, is used as a mixture with an alkylphenol. 
     
     
         30 . The product according to  claim 15 , wherein the molar ratio of alkali or alkaline earth metal hydroxybenzoate compound:boron compound of from about 15:1 to about 1:5. 
     
     
         31 . The product according to  claim 15 , wherein the molar ratio of alkali or alkaline earth metal hydroxybenzoate compound:amine component is from about 15:1 to about 1:5. 
     
     
         32 . A lubricant composition comprising a product according to  claim 15  and a base oil. 
     
     
         33 . The lubricant composition according to  claim 32  comprising:
 from 60 to 99.9% of at least one base oil, 
 from 0.1 to 20% of at least one reaction product, 
 the percentage being defined by weight of component as compared to the total weight of the composition. 
 
     
     
         34 . Method for lubricating two-stroke marine engines and four-stroke marine engines comprising application to said marine engines of a product resulting from the reaction of at least:
 an alkali or alkaline earth metal hydroxybenzoate compound, optionally substituted by a hydrocarbyl group and optionally overbased,   a boron compound,   an amine component selected from:   a di-fatty-alkyl(ene) polyalkylamine composition comprising one or more polyalkylamines of formulae (I) or (II):   
       
         
           
           
               
               
           
         
         wherein,
 each R is, independent of the other R, an alkyl moiety or an alkylene moiety with 4 to 30 carbon atoms, which is linear or branched, 
 n and z are independent of each other either 0, 1, 2, or 3, and 
 when z is superior than 0 then o and p are independent of each other either 0, 1, 2, or 3, 
 
         or derivatives thereof, 
         whereby said polyalkylamine composition comprises at least 3% by weight of branched compounds of formula (I) or (II), with regards to the total weight of polyalkylamine compounds (I) and (II) in the composition, branched compound signifying that: 
         in formula (I) at least one of n and z are superior or equal to 1, 
         in formula (II) n is superior or equal to 1 
         or a lubricant composition according to  claim 32 .