US2011192076A1PendingUtilityA1

Composition having improved filterability

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Assignee: EVONIK ROHMAX ADDITIVES GMBHPriority: Feb 5, 2010Filed: Feb 5, 2010Published: Aug 11, 2011
Est. expiryFeb 5, 2030(~3.6 yrs left)· nominal 20-yr term from priority
Inventors:Brian J. HessRobert CybertMarie MalitskyFrank-Olaf MaehlingRene KoschabekRonny Sondjaja
Y02E50/10C10L 10/14C10L 1/1963C10L 10/16
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Claims

Abstract

The present invention describes a fuel oil composition comprising at least one biodiesel oil and at least one additive for improving the filterability. In addition thereto, the present invention discloses a method for improving the filterability of a fuel oil comprising a biodiesel and a use of a polyalkyl(meth)acrylate polymer to improve the filterability of a fuel oil comprising a biodiesel

Claims

exact text as granted — not AI-modified
1 . A fuel oil composition comprising a biodiesel oil characterized in that the fuel composition comprises at least one additive for improving the filterability. 
     
     
         2 . The fuel oil composition according to  claim 1  wherein the additive for improving the filterability comprises at least one polymer comprising ester groups having a number average molecular weight Mn of from 750 to 100000 g/mol and a polydispersity Mw/Mn of from 1 to 8. 
     
     
         3 . The fuel oil composition according to  claim 2  wherein said polymer comprising ester groups comprises a weight average molecular weight Mw in the range of 1000 to 60000 g/mol. 
     
     
         4 . The fuel oil composition according to  claim 2  wherein said polymer comprising ester groups is a polyalkyl(meth)acrylate polymer having a number average molecular weight Mn of from 750 to 100000 g/mol and a polydispersity Mw/Mn of from 1 to 8. 
     
     
         5 . The fuel oil composition according to  claim 3  wherein said polymer comprising ester groups is a polyalkyl(meth)acrylate polymer comprises a weight average molecular weight Mw in the range of 1000 to 60000 g/mol. 
     
     
         6 . The fuel oil composition according to  claim 4  wherein said polyalkyl(meth)acrylate polymer comprises at least 40% by weight of repeating units being derived from alkyl (meth)acrylates having 7 to 40 carbon atoms in the alkyl residue. 
     
     
         7 . The fuel oil composition according to  claim 4  wherein polydispersity Mw/Mn of said polyalkyl(meth)acrylate polymer is in the range of from 1.2 to 5. 
     
     
         8 . The fuel oil composition according to  claim 4  wherein said polyalkyl(meth)acrylate polymer comprises 5 to 80% by weight of repeating units being derived from alkyl (meth)acrylates having 16 to 40 carbon atoms in the alkyl residue. 
     
     
         9 . The fuel oil composition according to  claim 8  wherein said polyalkyl(meth)acrylate polymer comprises a weight ratio of repeating units being derived from alkyl (meth)acrylates having 16 to 40 carbon atoms in the alkyl residue to repeating units being derived from alkyl (meth)acrylates having 7 to 15 carbon atoms in the alkyl residue being in the range from 3:1 to 1:1. 
     
     
         10 . The fuel oil composition according to  claim 1  wherein said additive for improving the filterability comprises at least two polyalkyl(meth)acrylate polymers. 
     
     
         11 . The fuel oil composition according to  claim 10  wherein one of the polyalkyl(meth)acrylate polymers comprises repeating units being derived from alkyl (meth)acrylates having 16 to 40 carbon atoms in the alkyl residue. 
     
     
         12 . The fuel oil composition according to  claim 11  wherein one of the polyalkyl(meth)acrylate polymers comprises repeating units which are derived from hydroxyl-containing monomers and/or (meth)acrylates of ether alcohols. 
     
     
         13 . The fuel oil composition according to  claim 12  wherein the polyalkyl(meth)acrylate polymers comprises repeating units which are derived from hydroxyl-containing monomers and/or (meth)acrylates of ether alcohols have a lower molecular weight than the other polyalkyl(meth)acrylate polymer. 
     
     
         14 . The fuel oil composition according to  claim 12  wherein the weight ratio of said polyalkyl(meth)acrylate polymers comprising repeating units being derived from alkyl (meth)acrylates having 16 to 40 carbon atoms in the alkyl residue to said other polyalkyl(meth)acrylate polymer is in the range from 10:1 to 1:10. 
     
     
         15 . The fuel oil composition according to  claim 1  wherein said composition comprises at least 70% by weight fuel oil. 
     
     
         16 . The fuel oil composition according to  claim 1  wherein said fuel oil comprises a mineral oil. 
     
     
         17 . The fuel oil composition according to  claim 1  wherein said biodiesel comprises fatty acid enters which are derived from monohydric alcohols having 1 to 4 carbon atoms. 
     
     
         18 . The composition according to  claim 17  wherein said biodiesel comprises at least 10% by weight of fatty acid esters which are derived from methanol and/or ethanol and saturated fatty acids. 
     
     
         19 . The fuel oil composition according to  claim 1  wherein said biodiesel comprises at least 5 ppm steryl glycosides. 
     
     
         20 . The fuel oil composition according to  claim 19  wherein said biodiesel comprises at least 20 ppm steryl glycosides. 
     
     
         21 . The fuel oil composition according to  claim 1  wherein said biodiesel comprises a Ranzimat value of at least 6 hours. 
     
     
         22 . The fuel oil composition according to  claim 1  wherein said biodiesel comprises a CSFT value of 300 ml after 500 seconds without any additive for improving the filterability. 
     
     
         23 . The fuel oil composition according to  claim 22  wherein said biodiesel comprises a CSFT value of at most 250 ml after 720 seconds without any additive for improving the filterability. 
     
     
         24 . The fuel oil composition according to  claim 1  wherein said biodiesel comprises a CSFT value of at most 300 ml after 350 seconds with an effective amount of said additive for improving the filterability. 
     
     
         25 . The fuel oil composition according to  claim 1  wherein said biodiesel comprises 0.15 to 1.0% by weight additive for improving the filterability. 
     
     
         26 . A method for improving the filterability of a fuel oil comprising a biodiesel wherein an additive for improving the filterability is added to said fuel oil composition. 
     
     
         27 . The method according to  claim 26  wherein a polyalkyl(meth)acrylate polymer having a number average molecular weight Mn of from 750 to 100000 g/mol and a polydispersity Mw/Mn of from 1 to 8 is added as an additive for improving the filterability to the fuel oil compositions. 
     
     
         28 . A use of a polyalkyl(meth)acrylate polymer having a number average molecular weight Mn of from 750 to 100000 g/mol and a polydispersity Mw/Mn of from 1 to 8 to improve the filterability of a fuel oil comprising a biodiesel.

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