US2008216390A1PendingUtilityA1

Biodiesel Fuel Mixture Containing Polyoxymethylene Dialkyl Ether

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Assignee: BASF AGPriority: Jun 29, 2005Filed: Jun 26, 2006Published: Sep 11, 2008
Est. expiryJun 29, 2025(expired)· nominal 20-yr term from priority
Inventors:Gerd-Dieter TebbenHeiner SchellingEckhard StroeferRolf PinkosAndrea HaunertMatthias EiermannJorn Karl
C10L 1/14C10L 1/185C10L 10/12Y02E50/10C10L 1/1985C10L 10/02C10G 2300/307C10G 2300/80Y02P30/20C10L 1/1852C10L 1/1616C10L 1/19C10L 1/026C10G 2300/1011
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Claims

Abstract

A biodiesel fuel mixture having a cetane number of >40, comprising a) from 1 to 100% by weight of biodiesel, b) from 0 to 98.9% by weight of diesel oil of fossil origin, c) from 0.1 to 20% by weight of polyoxyalkylene dialkyl ether of the formula RO(CH 2 O) n R  in which R is an alkyl group having from 1 to 10 carbon atoms and n=from 2 to 10, and d) from 0 to 5% by weight of further additives.

Claims

exact text as granted — not AI-modified
1 - 6 . (canceled) 
     
     
         7 . A biodiesel fuel mixture comprising:
 a) 5-90 wt. % biodiesel;   b) 0-94 wt. % diesel oil of fossil origin;   c) 1-20 wt. % polyoxymethylene dialkyl ether represented by the following general formula:
   RO(CH 2 O) n R 
    wherein R is an alkyl group having from 1 to 10 carbon atoms, and n is from 2 to 10; and   d) 0-5 wt. % further additives,   wherein the biodiesel fuel mixture has a cetane number of >40.   
     
     
         8 . The biodiesel fuel mixture according to  claim 7 , wherein the polyoxymethylene dialkyl ether of c) comprises 3, 4 or 5 oxymethylene repeat units, or a mixture thereof. 
     
     
         9 . The biodiesel fuel mixture according to  claim 7 , wherein the polyoxymethylene dialkyl ether of c) is a polyoxymethylene dimethyl ether. 
     
     
         10 . The biodiesel fuel mixture according to  claim 7 , wherein the biodiesel fuel mixture has a cetane number of >45. 
     
     
         11 . A biodiesel fuel mixture comprising:
 a) 5-90 wt. % biodiesel;   b) 6-92 wt. % diesel oil of fossil origin;   c) 3-11 wt. % polyoxyalkylene dialkyl ether; and   d) 0-1 wt. % cetane number improver,   wherein the biodiesel fuel mixture has a cetane number of >40.   
     
     
         12 . The biodiesel fuel mixture according to  claim 11 , wherein the polyoxyalkylene dialkyl ether of c) is a polyoxymethylene dialkyl ether represented by the following general formula:
   RO(CH 2 O) n R   wherein R is an alkyl group having from 1 to 10 carbon atoms, and n is from 2 to 10.   
     
     
         13 . The biodiesel fuel mixture according to  claim 12 , wherein the polyoxymethylene dialkyl ether of c) comprises 3, 4 or 5 oxymethylene repeat units, or a mixture thereof. 
     
     
         14 . The biodiesel fuel mixture according to  claim 12 , wherein the polyoxymethylene dialkyl ether of c) is a polyoxymethylene dimethyl ether. 
     
     
         15 . The biodiesel fuel mixture according to  claim 12 , wherein the biodiesel fuel mixture has a cetane number of >45. 
     
     
         16 . An additive for increasing the cetane number in a biodiesel fuel mixture having at least 1% by weight of biodiesel, wherein the additive comprises a polyoxymethylene dialkyl ether represented by the following general formula:
   RO(CH 2 O) n R   wherein R is an alkyl group having from 1 to 10 carbon atoms, and n is from 2 to 10.   
     
     
         17 . The additive according to  claim 16 , wherein the polyoxymethylene dialkyl ether comprises 3, 4 or 5 oxymethylene repeat units, or a mixture thereof. 
     
     
         18 . The additive according to  claim 16 , wherein the polyoxymethylene dialkyl ether is a polyoxymethylene dimethyl ether. 
     
     
         19 . The additive according to  claim 16 , having a cetane number of >40. 
     
     
         20 . The additive according to  claim 16 , having a cetane number of >45.

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