High Temperature Oil

Abstract

The invention relates to novel high temperature oils based on aromatic esters, such as trimellitic acid esters, pryomellitic acid esters, trimesic acid esters or a mixture thereof or derivatives of phloroglucinol and a fully hydrated or a hydrated polyisobutylene or a mixture thereof.

1 . A high-temperature oil for lubrication of chains, chain rollers and belts of continuous presses, comprising
 40 to 91.9% by weight of an aromatic ester of the general formula (I)   
       
         
           
           
               
               
           
         
         where R1 is a linear or branched alkyl group having 6 to 16 carbon atoms and n is an integer of 3 to 4, 
         or 40 to 91.9% by weight of a compound of the general formula (II) 
       
       
         
           
           
               
               
           
         
         where R is a linear or branched alkyl group having a chain length of 8 to 16 carbon atoms and n is equal to 3, 
         and 5 to 50% by weight of a hydrogenated polyisobutylene, of a fully hydrogenated polyisobutylene or of a mixture of a fully hydrogenated and a hydrogenated polyisobutylene. 
       
     
     
         2 . The high-temperature oil as claimed in  claim 1 , further comprising 0.1 to 6% by weight of an antioxidant. 
     
     
         3 . The high-temperature oil as claimed in  claim 1 , further comprising 1 to 4% by weight of an antiwear agent. 
     
     
         4 . The high-temperature oil as claimed in  claim 1 , further comprising 0.1 to 0.5% by weight of an anticorrosive. 
     
     
         5 . The high-temperature oil as claimed in  claim 1 , further comprising 0 to 2% by weight of an ionic liquid. 
     
     
         6 . The high-temperature oil as claimed in  claim 1 , wherein the ester compound of the general formula (I) is selected from the group consisting of esters of trimellitic acid, pyromellitic acid, trimesic acid or of a mixture thereof. 
     
     
         7 . The high-temperature oil as claimed  claim 1 , wherein the compound of the general formula (II) is a derivative of phloroglucinol (benzene-1,3,5-triol). 
     
     
         8 . The high-temperature oil as claimed in  claim 7 , in which the derivative of phloroglucinol is phloroglucinol trioctanoate, phloroglucinol tridecanoate or phloroglucinol tridodecanoate. 
     
     
         9 . The high-temperature oil as claimed in  claim 2 , wherein the antioxidant bears sulfur and/or nitrogen and/or phosphorus in the molecule, and is selected from the group consisting of aromatic aminic antioxidants such as alkylated phenyl-alpha-naphthylamine, dialkyldiphenylamine, sterically hindered phenols such as butylhydroxytoluene (BHT), phenolic antioxidants having thioether groups, zinc dialkyldithiophosphates or molybdenum dialkyldithiophosphates or tungsten dialkyldithiophosphates, and phosphites. 
     
     
         10 . The high-temperature oil as claimed in  claim 3 , wherein the antiwear agent is selected from the group consisting of antiwear additives based on diphenyl cresyl phosphate, amine-neutralized phosphates, alkylated and nonalkylated triaryl phosphates, alkylated and nonalkylated triaryl thiophosphates, zinc dialkyldithiophosphates or molybdenum dialkyldithiophosphates or tungsten dialkyldithiophosphates, carbamates, thiocarbamates, zinc dithiocarbamates or molybdenum dithiocarbamates or tungsten dithiocarbamates, dimercaptothiadiazole, calcium sulfonates and benzotriazole derivatives. 
     
     
         11 . The high-temperature oil as claimed in  claim 4 , wherein the anticorrosive is selected from the group consisting of additives based on overbased calcium sulfonates, amine-neutralized phosphates, alkylated calcium naphthalenesulfonates, oxazoline derivatives, imidazole derivatives, succinic monoesters, N-alkylated benzotriazoles. 
     
     
         12 . The high-temperature oil as claimed in  claim 5 , wherein the ionic liquid is selected from the group consisting of tetraalkylammonium bis(trifluoromethylsulfonyl)imides and tetraalkylphosphonium bis(trifluoromethylsulfonyl)imides, for example trihexyl(tetradecyl)phosphonium bis(trifluoromethylsulfonyl)imide (HPDimide) and methyltrioctylammonium bis(trifluoromethylsulfonyl)imide (Moimide), and tetraalkylammonium tris(perfluoroethyl)trifluorophosphate and tetraalkylphosphonium tris(perfluoroethyl)trifluorophosphate, especially tetrabutylphosphonium tris(perfluoroethyl)trifluorophosphate (BuPPFET), trihexyl(tetradecyl) tris(perfluoroethyl)trifluorophosphate (HDPPFET), pyrrolidinium tris(perfluoroethyl)trifluorophosphates, tetraalkylammonium, tetraalkylphosphonium perfluorobutanesulfonates, trihexyl(tetradecyl)phosphonium perfluorobutanesulfonate (HDPnonaflate). 
     
     
         13 . The use of the high-temperature oil as claimed in any of  claim 1  for industrial chain lubrication in conveying systems, painting lines, the textile industry, the insulating materials industry, the glass industry, or for belt lubrication in continuous wood pressing plants. 
     
     
         14 . The high-temperature oil as claimed in  claim 2 , further comprising 1 to 4% by weight of an antiwear agent. 
     
     
         15 . The high-temperature oil as claimed in  claim 2 , further comprising 0.1 to 0.5% by weight of an anticorrosive. 
     
     
         16 . The high-temperature oil as claimed in  claim 3 , further comprising 0.1 to 0.5% by weight of an anticorrosive. 
     
     
         17 . The high-temperature oil as claimed in  claim 2 , further comprising 0 to 2% by weight of an ionic liquid. 
     
     
         18 . The high-temperature oil as claimed in  claim 3 , further comprising 0 to 2% by weight of an ionic liquid. 
     
     
         19 . The high-temperature oil as claimed in  claim 4 , further comprising 0 to 2% by weight of an ionic liquid.