Use Of Compounds Revealing The Efficiency Of Filterability Additives In Hydrocarbon Distillates, And Synergic Composition Containing Same

Abstract

The invention relates to the use, in a hydrocarbon distillate with a boiling temperature of between 150 and 450° C. and a crystallization onset temperature as measured by Differential calorimetric Analysis of greater than or equal to −50° C., preferably of −5° C. to +10° C., of a homopolymer obtained from an olefinic ester of carboxylic acid of 3 to 12 carbon atoms and from a fatty alcohol containing a chain of more than 16 carbon atoms and optionally an olefinic double bond, as a compound for revealing the efficiency of filterability additives based on copolymer and/or terpolymers of ethylene and of vinyl ester of a carboxylic acid of 3 to 12 carbon atoms, and of a monoalcohol containing 1 to 10 carbon atoms. The invention is also directed to an additive composition comprising a conventional hydrocarbon filterability additive in combination with an efficiency reveal additive, and also to the combustion fuels, motor fuel and oil fuel that comprise these additive combinations.

1 . A composition comprising a mixture further comprising:
 A) a filterability additive based on a copolymer and/or terpolymer of ethylene and of a vinyl ester of a carboxylic acid with 2 to 5 carbon atoms and of a monoalcohol comprising 1 to 10 carbon atoms; and   B) a polvacrylate comprising side hydrocarborn chains with 18-40, wherein the polyacrvlate is not a polymethacrylate;   A and B being in a ratio producing a synergic effect as regards the filterability temperature LFT as measured according to the NF EN116 standard, of hydrocarbon distillates with a boiling temperature comprised between 150 and 450° C. and an onset crystallization temperature as measured by differential scanning calorimetry analysis greater than or equal to −5° C.   
     
     
         2 . A composition comprising (A) from 85 to 99% by weight of at least one filterability additive based on a copolymer and/or terpolymer of ethylene and of a vinyl ester of a carboxylic acid with 2 to 5 carbon atoms, of a monoalcohol comprising 1 to 10 carbon atoms; and (B) from 1 to 15% by weight of a polyacrylate comprising side hydrocarbon chains with 18-40 carbon atoms, wherein the polyacrylate is not a polymethacrylate. 
     
     
         3 . The composition according to  claim 2 , wherein the polyacrylate has a weight average molecular weight Mw comprised between 5,000 and 20,000. 
     
     
         4 - 5 . (canceled) 
     
     
         6 . The composition according to  claim 2 , wherein the filterability additive is selected from copolymers and terpolymers of ethylene containing more than 20% of ester units, these ester units being themselves selected from esters of the vinyl acetate, vinyl propionate, alkyl acrylate, and alkyl methacrylate type, taken alone or as a mixture, the alkyl group containing 1 to 7 carbon atoms. 
     
     
         7 . The composition according to  claim 2 , wherein the filterability additives are selected from copolymers or terpolymers of ethylene and vinyl acetate, and/or vinyl propionate, and/or vinyl versatate, of ethylene and/or (alkyl)acrylates, and/or (alkyl)methacrylates, taken alone or as a mixture, comprising 20 to 40% by weight of ester units. 
     
     
         8 . The composition according to  claim 2 , wherein the filterability additives are selected from copolymers or terpolymers of ethylene and vinyl acetate, and/or vinyl priopionate, and/or vinyl versatate, of ethylene and/or (alkyl)acrylates, and/or (alkyl)methacrylates, with a weight molecular weight comprised between 3,000 and 20,000. 
     
     
         9 . The composition according to  claim 2 , further comprising from 85 to 98% by weight of copolymers of ethylene and vinyl acetate comprising 25 to 30% by weight of vinyl acetate units and 2 to 15% by weight of polyacrylate comprising side hydrocarbon chains with 18 to 40 carbon atoms and with an average molecular weight ranging from 10,000 to 19,000. 
     
     
         10 . A hydrocarbon distillate comprising from 0 to 5,000 ppm of sulfur, containing from 10 to 5,000 ppm of the composition according to  claim 1 , optionally mixed with other additives, detergents, dispersants, de-emulsifiers, antifoam agents, biocidal agents, reodorant agents, cetane enhancers, anticorrosion agents, friction modifiers, enhancers of lubricity, combustion, cloud point, flow point, antisedimentation and conductivity. 
     
     
         11 . The distillate according to  claim 10  further comprising at least one hydrocarbon cut derived from the group formed by the distillates with a boiling temperature comprised between 150 and 450° C., with an onset crystallization temperature Tcc greater than or equal to −5° C., comprising the distillates from direct distillation, in vacuo distillates, hydrotreated distillates, distillates stemming from catalytic cracking and/or hydrocracking of distillates in vacuo, distillates resulting from ARDS type conversion and/or viscosity breaking methods, distillates stemming from valuation of Fisher Tropsch cuts, distillates resulting form the BTL conversion of vegetable and/or animal biomass, taken alone or as a combination, and esters of vegetable and animal oils or their mixtures. 
     
     
         12 . The distillate according to  claim 10 , further comprising a content of n-paraffins containing more than 18 carbon atoms, greater than 4% by weight. 
     
     
         13 . The distillate according to  claim 10 , further comprising a content greater than or equal to 0.7% by weight of n-paraffins, the carbon number of which is greater than 24. 
     
     
         14 . The distillate according to  claim 10 , further comprising from 0.7 to 2% of n-paraffins having a carbon number ranging from C 24  to C 40 . 
     
     
         15 . A diesel fuel comprising from 0 to 500 ppm of sulfur comprising at least one distillate according to  claim 10 . 
     
     
         16 . A heating fuel oil comprising from 0 to 5,000 ppm of sulfur comprising at least one distillate according to  claim 10 . 
     
     
         17 . A heavy fuel oil comprising at least one distillate according to  claim 10 . 
     
     
         18 . The composition according to  claim 1 , wherein the filterability additive is based on a copolymer and/or terpolymer of ethylene and of vinyl acetate or of ethylene and a vinyl ester of a carboxylic acid with 3 to 5 carbon atoms and of a monoalcohol comprising 1 to 10 carbon atoms. 
     
     
         19 . The composition according to  claim 2 , wherein the filterability additive is based on a copolymer and/or terpolymer of ethylene and of vinyl acetate or of ethylene and a vinyl ester of a carboxylic acid with 3 to 5 carbon atoms and of a monoalcohol comprising 1 to 10 carbon atoms.