US2005044780A1PendingUtilityA1

Polyoxyalkylene monoethers with reduced water affinity

46
Priority: Apr 2, 1997Filed: Sep 8, 2004Published: Mar 3, 2005
Est. expiryApr 2, 2017(expired)· nominal 20-yr term from priority
Inventors:George CombsKenneth G. Mcdaniel
C08G 65/2606C10L 1/1985C10L 1/2383C10L 1/143C10L 1/1852C10L 1/238C10L 1/198C10L 10/04C10L 10/00
46
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Claims

Abstract

Oleophilic polyoxyalkylene monoethers having reduced water affinity are disclosed. The monoethers have a hydrocarbyl residue, a polyoxyalkylene moiety, and a hydroxyl end group. The monoethers contain less than about 6 mole percent of alkoxylated unsaturates, and preferably less than about 5 mole percent of polyoxyalkylene diols. The monoethers offer substantial advantages for fuel compositions, particularly reduced water affinity. By using deposit-control additives based on the monoethers, formulators can offer better fuels for cleaner engines.

Claims

exact text as granted — not AI-modified
1 - 31 . (Cancelled).  
     
     
         32  A fuel deposit-control additive comprising an oleophilic polyoxyalkylene monoether of the structure,  
         Z—(A) n —OH  
       in which 
 A represents an oxyalkylene group,  
 Z represents a hydrocarbyl residue chosen from C 4 -C 60  alkyl, aryl and aralkyl, and  
 n represents the average number of oxyalkylene groups and is within the range of greater than 17 to about 500,  
 wherein the monoether contains less than about 3 mole percent of alkoxylated unsaturates impurities.  
 
     
     
         33  The fuel deposit-control additive according to  claim 32  further including at least one detergent.  
     
     
         34  The fuel deposit-control additive according to  claim 32 , wherein A represents oxypropylene or a combination of oxypropylene and another oxyalkylene group.  
     
     
         35  The fuel deposit-control additive according to  claim 32 , wherein Z represents the hydrocarbyl residue of nonylphenol.  
     
     
         36  The fuel deposit-control additive according to  claim 32 , wherein Z represents the hydrocarbyl residue of a C 12 -C 15  aliphatic alcohol.  
     
     
         37  The fuel deposit-control additive according to  claim 32 , wherein Z is chosen from C 4 -C 30  alkyl, aryl and aralkyl.  
     
     
         38  The fuel deposit-control additive according to  claim 32  containing less than about 1.5 mole percent of alkoxylated unsaturates.  
     
     
         39  A composition comprising: 
 at least one fuel; and    a fuel deposit-control additive comprising an oleophilic polyoxyalkylene monoether of the structure,      Z—(A) n —OH    in which    A represents an oxyalkylene group,    Z represents a hydrocarbyl residue chosen from C 4 -C 60  alkyl, aryl and aralkyl, and    n represents the average number of oxyalkylene groups and is within the range of greater than 17 to about 500,    wherein the monoether contains less than about 3 mole percent of alkoxylated unsaturates impurities.    
     
     
         40  The composition according to  claim 39  further including at least one detergent.  
     
     
         41  A method of reducing the water affinity of a fuel composition, the method comprising adding to the fuel composition an oleophilic polyoxyalkylene monoether of the structure,  
         Z—(A) n —OH  
       in which 
 A represents an oxyalkylene group,  
 Z represents a hydrocarbyl residue chosen from C 4 -C 60  alkyl, aryl and aralkyl, and  
 n represents the average number of oxyalkylene groups and is within the range of greater than 17 to about 500,  
 wherein the monoether contains less than about 3 mole percent of alkoxylated unsaturates impurities.  
 
     
     
         42  The method according to  claim 41  further including adding at least one detergent.  
     
     
         43  The method according to  claim 41 , wherein A represents oxypropylene or a combination of oxypropylene and another oxyalkylene group.  
     
     
         44  The method according to  claim 41 , wherein Z represents the hydrocarbyl residue of nonylphenol.  
     
     
         45  The method according to  claim 41 , wherein Z represents the hydrocarbyl residue of a C 12 -C 15  aliphatic alcohol.  
     
     
         46  The method according to  claim 41 , wherein Z is chosen from C 4 -C 30  alkyl, aryl and aralkyl.  
     
     
         47  The method according to  claim 41 , wherein the monoether contains less than about 1.5 mole percent of alkoxylated unsaturates.  
     
     
         48  A fuel deposit-control additive comprising an oleophilic polyoxyalkylene monoether of the structure,  
         Z—(A) n —OH  
       in which 
 A represents an oxyalkylene group,  
 Z represents a hydrocarbyl residue chosen from C 4 -C 60  alkyl, aryl and aralkyl, and  
 n represents the average number of oxyalkylene groups and is within the range of from about 10 to about 500,  
 wherein the monoether contains less than about 0.5 mole percent of alkoxylated unsaturates impurities.  
 
     
     
         49  The fuel deposit-control additive of  claim 48 , wherein A represents oxypropylene or a combination of oxypropylene and another oxyalkylene group.  
     
     
         50  The fuel deposit-control additive of  claim 48 , wherein Z represents the hydrocarbyl residue of nonylphenol.  
     
     
         51  The fuel deposit-control additive of  claim 48 , wherein Z represents the hydrocarbyl residue of a C 12 -C 15  aliphatic alcohol.  
     
     
         52  The fuel deposit-control additive of  claim 48 , wherein Z is chosen from C 4 -C 30  alkyl, aryl and aralkyl.  
     
     
         53  The fuel deposit-control additive of  claim 48 , wherein n is from about 10 to about 30.  
     
     
         54  A composition comprising: 
 at least one fuel; and    a fuel deposit-control additive comprising an oleophilic polyoxyalkylene monoether of the structure,      Z—(A) n —OH    in which    A represents an oxyalkylene group,    Z represents a hydrocarbyl residue chosen from C 4 -C 60  alkyl, aryl and aralkyl, and    n represents the average number of oxyalkylene groups and is within the range of from about 10 to about 500,    wherein the monoether contains less than about 0.5 mole percent of alkoxylated unsaturates impurities.    
     
     
         55  The composition according to  claim 54  further including at least one detergent.  
     
     
         56  A method of reducing the water affinity of a fuel composition, the method comprising adding to the fuel composition an oleophilic polyoxyalkylene monoether of the structure,  
         Z—(A) n —OH  
       in which 
 A represents an oxyalkylene group,  
 Z represents a hydrocarbyl residue chosen from C 4 -C 60  alkyl, aryl and aralkyl, and  
 n represents the average number of oxyalkylene groups and is within the range of from about 10 to about 500,  
 wherein the monoether contains less than about 0.5 mole percent of alkoxylated unsaturates impurities  
 
     
     
         57  The method according to  claim 56  further including adding at least one detergent.  
     
     
         58  The method according to  claim 56 , wherein A represents oxypropylene or a combination of oxypropylene and another oxyalkylene group.  
     
     
         59  The method according to  claim 56 , wherein Z represents the hydrocarbyl residue of nonylphenol.  
     
     
         60  The method according to  claim 56 , wherein Z represents the hydrocarbyl residue of a C 12 -C 15  aliphatic alcohol.  
     
     
         61  The method according to  claim 56 , wherein Z is chosen from C 4 -C 30  alkyl, aryl and aralkyl.  
     
     
         62  The method according to  claim 56 , wherein n is from about 10 to about 30.

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