Method and fuel composition for control of octane requirement increase

Claim 3

The method of claim 1 wherein said oil-soluble iron compound is selected from the group consisting of cyclopentadienyl iron and substituted derivatives thereof.

Claim 4

The method of claim 2 wherein said soluble iron compound is selected from the group consisting of cyclopentadienyl iron and C 1 and C 3 alkyl substituted derivatives thereof wherein one or both of the cyclopentadienyl rings are substituted with one to two alkyl groups.

Claim 5

The method of claim 1 wherein said oil-soluble iron compound is dicyclopentadienyl iron.

Claim 6

The method of claim 1 wherein said carboxylic acid or ester is selected from the group consisting of the esters of C 2 to C 10 monocarboxylic acids.

Claim 7

The method of claim 5 wherein said ester is the derivative of a C 2 to C 4 monocarboxylic acid and a C 4 to C 8 tertiary alkyl alcohol.

Claim 8

The method of claim 6 wherein said ester is t-butyl acetate.

Claim 9

The method of claim 1 wherein said oil-soluble iron compound is dicyclopentadienyl iron and said oxygen-containing compound is t-butylacetate.

Claim 10

The method of claim 1 wherein said oil-soluble iron compound is introduced into said engine at a concentration of from at least about 0.0001 to about 10 grams of iron per gallon of said fuel composition.

Claim 11

The method of claim 9 wherein said monocarboxylic acid or ester is introduced into said engine at a concentration of from at least about 0.001 to about 10 grams per gallon of said fuel composition.

Claim 12

The method of claim 8 wherein dicyclopentadienyl iron is introduced into said engine at a concentration of from at least about 0.001 to about 5 grams of iron and said t-butylacetate is introduced into said engine at a concentration of at least about 0.001 to about 10 grams per gallon of said fuel composition.

Claim 13

The method of claim 1 wherein said polar compound comprises a polar radical selected from the group consisting of acetoxy, amino, ammonium, carbamido, carbamyl, carbonyl, carboxy, carboxylate, cyano, formamido, formyl, hydrazino, hydroxamino, hydroxy, imino, mercapto, nitro, nitroso, phosphono, phosphonate, sulfamino, sulfamyl, sulfino, sulfinyl, sulfo, sulfonate and thiocyano radicals.

Claim 14

The method of claim 12 wherein said radical is covalently bound to a non-polar hydrocarbyl or polyoxyalkylene radical having an average molecular weight of from about 200 to about 10,000.

Claim 15

The method of claim 13 wherein said polyalkylene radical is selected from the group consisting of polyoxypropylene and polyoxybutylene.

Claim 16

The method of claim 14 wherein said hydrocarbyl radical is a polybutenyl radical.

Claim 17

The method of claim 14 or 15 wherein said polar radical is selected from the group consisting of primary and secondary amino, formamido, and sulfo radicals.

Claim 18

The method of claim 12 wherein said polar compound is selected from the group consisting of aliphatic hydrocarbyl substituted hydrazines, monocarboxylic acid salts of hydrocarbylamines, hydrocarbylpoly(oxyalkylene)aminoesters, hydrocarbylpoly(oxyalkylene)ureylenecarbamates, hydrocarbylcarbonates.

Claim 19

The method of claim 17 wherein said polar compound is selected from the group consisting of polyisobutenylphenylhydrazine, polyisobutenylhydroxyethylhydrazine, polyisobutenyldimethylhydrazine, polyisobutenylethylenediamine, polyisobutenylethylenediamineoxalate, polyisobutenylethylenediaminecitrate, polyisobutenylethylenediamineacetate, polyisobutenylethylenediaminelactate, polyisobutenylethylenediamineformate, polyisobutenylethylenediaminecarbonate, polypropenyldimethylpropanediamineacetate, polybutenylethylenediaminestearate, polypropenyl N',N-(dimethyltetraethylenepentamine)acetate, polyisobutenylmethylaminestearate, butylpoly(oxypropylene)N-(2-aminoethyl-2-aminopropionate, dodecylphenylpoly(oxybutylene)aminopropionate, butylpoly(oxypropylene)N-(3-dimethylaminoproply)amino-acetate, dodecylphenylpoly(oxybutylene)5-(2-aminoethylamino) valerate, butylpoly(oxypropylene)ureylene aminocarbamate, dodecylphenyl poly(oxybutylene)ureyleneaminocarbamate, polybutenyl(trimethylol propenyl)carbonate, and the reaction product of polybutenylchloroformate and N,N,N',N'-tetra-(2-hydroxypropyl)-ethylenediamine or tetra-(]-hydroxyethyl)-ethylene diamine.

Claim 20

The method of claim 1 wherein said non-volatile polar compound comprises an alkyl phenyl poly(oxyalkylene)-N-(2-aminoethylcarbamate).

Claim 21

The method of claim 11 wherein said non-volatile polar compound comprises an alkyl phenyl poly(oxy-alkylene)-N-(2- aminoethylcarbamate).

Claim 22

A motor fuel composition comprising a mixture of a hydrocarbon of the gasoline boiling range and an octane requirement increase-inhibiting amount of (a) an oil-soluble iron compound, (b) a volatile mono carboxylic acid or ester, and (c) a nonvolatile polar compound capable of solubilizing carbonaceous engine deposits.

Claim 23

A motor fuel composition comprising a mixture of a hydrocarbon of the gasoline boiling range and an octane requirement increase-inhibiting amount of (a) an oil-soluble iron compound, (b) a volatile mono carboxylic acid or ester, and (c) a nonvolatile polar compound capable of solubilizing carbonaceous engine deposits.

Claim 24

The composition of claim 21 wherein said oil-soluble iron compound is selected from the group consisting of cyclopentadienyl iron and substituted derivatives thereof.

Claim 25

The composition of claim 22 wherein said soluble iron compound is selected from the group consisting of cyclopentadienyl iron and C 1 and C 3 alkyl substituted derivatives thereof wherein one or both of the cyclopentadienyl rings are substituted with one to two alkyl groups.

Claim 26

The composition of claim 21 wherein said oil-soluble iron compound is dicyclopentadienyl iron.

Claim 27

The composition of claim 21 wherein said carboxylic acid or ester selected from the group consisting of the esters of C 2 to C 10 monocarboxylic acids.

Claim 28

The composition of claim 25 wherein said ester is the derivative of a C 2 to C 4 monocarboxylic acid and a C 4 to C 8 tertiary alkyl alcohol.

Claim 29

The composition of claim 26 wherein said ester is t-butyl acetate.

Claim 30

The composition of claim 31 wherein said oil-soluble iron compound is dicyclopentadienyl iron and said oxygen-containing compound is t-butylacetate.

Claim 31

The composition of claim 21 wherein said oil-soluble iron compound comprises from about 0.0001 to about 10 grams of iron per gallon of said fuel composition.

Claim 32

The composition of claim 29 wherein said monocarboxylic acid or ester is introduced into said engine at a concentration of from at least about 0.001 to about 10 grams per gallon of said fuel composition.

Claim 33

The composition of claim 28 wherein dicyclopentadienyl iron comprises from about 0.001 to about 5 grams of iron and said t-butylacetate comprises from about 0.001 to about 10 grams per gallon of said fuel composition.

Claim 34

The composition of claim 31 wherein said polar compound comprises a polar radical selected from the group consisting of acetoxy, amino, ammonium, carbamido, carbamyl, carbonyl, carboxy, carboxylate, cyano, formamido, formyl, hydrazino, hydroxamino, hydroxy, imino, mercapto, nitro, nitroso, phosphono, phosphonate, sulfamino, sulfamyl, sulfino, sulfinyl, sulfo, sulfonate and thiocyano radicals.

Claim 35

The composition of claim 32 wherein said radical is covalently bound to a non-polar hydrocarbyl or polyoxyalkylene radical having an average molecular weight of from about 200 to about 10,000.

Claim 36

The composition of claim 33 wherein said polyalkylene radical is selected from the group consisting of polyoxypropylene and polyoxybutylene.

Claim 37

The composition of claim 34 wherein said hydrocarbyl radical is a polybutenyl radical.

Claim 38

The composition of claim 34 or 35 wherein said polar radical is selected from the group consisting of primary and secondary amino, formamido, and sulfo radicals.

Claim 39

The composition of claim 32 wherein said polar compound is selected from the group consisting of aliphatic hydrocarbyl substituted hydrazines, monocarboxylic acid salts of hydrocarbylamines, hydrocarbylpoly(oxyalkylene)aminoesters, hydrocarbylpoly(oxyalkylene)ureylenecarbamates, and hydrocarbylcarbonates.

Claim 40

The composition of claim 37 wherein said polar compound is selected from the group consisting of polyisobutenylphenylhydrazine, polyisobutenylhydroxyethylhydrazine, polyisobutenyldimethylhydrazine, polyisobutenylethylenediamine, polyisobutenylethylenediamineoxalate, polyisobutenylethylenediaminecitrate, polyisobutenylethylenediamineacetate, polyisobutenylethylenediaminelactate, polyisobutenylethylenediamineformate, polyisobutenylethylenediaminecarbonate, polypropenyldimethylpropanediamineacetate, polybutenylethylenediaminestearate, polypropenyl N',N-(dimethyltetraethylenepentamine)acetate, polyisobutenylmethylaminestearate, butylpoly(oxypropylene)N-(2-aminoethyl-2-aminopropionate, dodecylphenylpoly(oxybutylene)aminopropionate, butylpoly(oxypropylene)N-(3-dimethylaminoproply)aminoacetate, dodecylphenylpoly(oxybutylene)5-(2-aminoethylamino) valerate, butylpoly(oxypropylene)ureylene aminocarbamate, dodecylphenyl poly(oxybutylene)ureyleneaminocarbamate, polybutenyl(trimethylol propenyl)carbonate, and the reaction product of polybutenylchloroformate and N,N,N',N'-tetra-(2-hydroxypropyl)-ethylene-diamine or tetra-(]-hydroxyethyl)ethylene diamine.

Claim 41

The composition of claim 21 wherein said non-volatile polar compound comprises an alkylphenyl poly(oxyalkylene)-N-(2-aminoethyl carbamate).

Claim 42

The composition of claim 31 wherein said non-volatile polar compound comprises an alkyl phenyl poly(oxyalkylene)-N-(2-amino ethyl carbamate).

Claim 43

A concentrate suitable for use in a liquid hydrocarbon fuel in the gasoline boiling range comprising (a) an oil-soluble iron compound, (b) a volatile mono carboxylic acid or ester, and (c) a nonvolatile polar compound capable of solubilizing carbonaceous engine deposits, and (d) a fuel compatible diluent boiling in the range of from about 50° C. (122° F.) to about 232° C. (450° F.), wherein said (a), (b) and (c) are present in an amount sufficient to provide octane increase inhibiting-effect to said liquid hydrocarbon fuel.

Claim 44

A concentrate suitable for use in a liquid hydrocarbon fuel in the gasoline boiling range comprising (a) an oil-soluble iron compound, (b) a volatile mono carboxylic acid or ester, and (c) a nonvolatile polar compound capable of solubilizing carbonaceous engine deposits, and (d) a fuel compatible diluent boiling in the range of from about 50° C. (122° F.) to about 232° C. (450° F.), wherein said (a), (b) and (c) are present in an amount sufficient to provide octane increase inhibiting-effect to said liquid hydrocarbon fuel.

Claim 45

The concentrate of claim 41 wherein said oil-soluble iron compound is selected from the group consisting of cyclopentadienyl iron and substituted derivatives thereof.

Claim 46

The concentrate of claim 41 wherein said volatile carboxylic acid or ester is selected from the group consisting of the esters of C 2 to C 10 monocarboxylic acids.

Claim 47

The concentrate of claim 41 wherein said monocarboxylic acid or ester is introduced into said engine at a concentration of from at least about 0.001 to about 10 grams per gallon of said fuel composition.

Claim 48

The concentrate of claim 42 or 43 wherein said oil-soluble iron compound comprises from about 0.01 to about 50 grams of iron and said volatile carboxylic acid or ester comprises from about 0.1 to about 100 grams per gallon of said fuel composition.

Claim 49

The concentrate of claim 41 wherein said polar compound comprises a polar radical selected from the group consisting of acetoxy, amino, ammonium, carbamido, carbamyl, carbonyl, carboxy, carboxylate, cyano, formamido, formyl, hydrazino, hydroxamino, hydroxy, imino, mercapto, nitro, nitroso, phosphono, phosphonate, sulfamino, sulfamyl, sulfino, sulfinyl, sulfo, sulfonate and thiocyano radicals.

Claim 50

The concentrate of claim 46 wherein said radical is covalently bound to a non-polar hydrocarbyl or polyoxyalkylene radical having an average molecular weight of from about 200 to about 10,000.

Claim 51

The concentrate of claim 47 wherein said polyalkylene radical is selected from the group consisting of polyoxypropylene and polyoxybutylene.

Claim 52

The concentrate of claim 48 wherein said hydrocarbyl radical is a polybutenyl radical.

Claim 53

The concentrate of claim 48 or 15 wherein said polar radical is selected from the group consisting of primary and secondary amino, formamido, and sulfo radicals.

Claim 54

The concentrate of claim 46 wherein said polar compound is selected from the group consisting of aliphatic hydrocarbyl substituted hydrazines, monocarboxylic acid salts of hydrocarbylamines, hydrocarbylpoly(oxyalkylene)aminoesters, hydrocarbylpoly(oxyalkylene)ureylenecarbamates, and hydrocarbylcarbonates.

Claim 55

The concentrate of claim 51 wherein said polar compound is selected from the group consisting of polyisobutenylphenylhydrazine, polyisobutenylhydroxyethylhydrazine, polyisobutenyldimethylhydrazine, polyisobutenylethylenediamine, polyisobutenylethylenediamineoxalate, polyisobutenylethylenediaminecitrate, polyisobutenylethylenediamineacetate, polyisobutenylethylenediaminelactate, polyisobutenylethylenediamineformate, polyisobutenylethylenediaminecarbonate, polypropenyldimethylpropanediamineacetate, polybutenylethylenediaminestearate, polypropenyl N',N-(dimethyltetraethylenepentamine)acetate, polyisobutenylmethylaminestearate, butylpoly(oxypropylene)N-(2-aminoethyl-2-aminopropionate, dodecylphenylpoly(oxybutylene)aminopropionate, butylpoly(oxypropylene)N-(3-dimethylaminoproply)aminoacetate, dodecylphenylpoly(oxybutylene)5-(2-aminoethylamino) valerate, butylpoly(oxypropylene)ureylene aminocarbamate, dodecylphenyl poly(oxybutylene)ureyleneaminocarbamate, polybutenyl(trimethylol propenyl)carbonate, and the reaction product of polybutenylchloroformate and N,N,N',N'-tetra-(2-hydroxypropyl)-ethylene-diamine or tetra-(]-hydroxyethyl)-ethylene diamine.

Claim 56

The concentrate of claim 41 wherein said non-volatile polar compound comprises an alkylphenyl poly(oxyalkylene)-N-(2-aminoethyl carbamate).

Claim 57

The concentrate of claim 45 wherein said non-volatile polar compound comprises an alkyl phenyl poly(oxyalkylene)-N-(aminoethyl carbamate).

Claim 58

The concentrate of claim 54 wherein said oil-soluble iron compound is dicyclopentadienyl iron and said carboxylic acid or ester is t-butylacetate.

Claim 59

The concentrate of claim 41 wherein said diluent is selected from the group consisting of hydrocarbons boiling in the range of from about 50° C. to about 232° C.

Claim 60

The concentrate of claim 56 wherein said hydrocarbon is an aromatic hydrocarbon.

Claim 61

The method of claim 1 wherein said nonvolatile polar compound is introduced during said intermission in a separate fuel composition.

Claim 62

The method of claim 1 wherein said nonvolatile polar compound is introduced simultaneously with said fuel composition containing (a) and (b).