Deposit control and dispersant additives

Claim 2

A fuel composition comprising a major portion of hydrocarbon boiling in the gasoline range, and from 30 to about 2,000 ppm of a hydrocarbylpoly(oxyalkylene) polyamine of molecular weight from about 500 to about 10,000; wherein said hydrocarbyl group contains from 1 to about 30 carbon atoms, said poly(oxyalkylene) moiety comprises 8-100 oxyalkylene units selected from oxyalkylene units having from 2 to 5 carbon atoms at least a sufficient number of said oxyalkylene units being branched C 3 -C 5 oxyalkylene units to render said hydrocarbylpoly(oxyalkylene) polyamine soluble in said fuel composition, and said polyamine moiety comprises from 2 to about 12 amine nitrogen atoms and from 2 to 40 carbon atoms.

Claim 3

A fuel composition according to claim 1 in which said oxyalkylene units are selected from oxyalkylene units having from 3 to 4 carbon atoms.

Claim 4

A fuel composition according to claim 1 in which said hydrocarbylpoly(oxyalkylene) polyamine has a molecular weight of about 800 to about 5,000.

Claim 5

A fuel composition according to claim 1 in which said hydrocarbyl group contains from 2 to 20 carbon atoms.

Claim 6

A fuel composition according to claim 1 in which said hydrocarbyl group is selected from butyl and alkylphenyl groups.

Claim 7

A fuel composition according to claim 1 in which said polyamine moiety is derived from lower polyalkylene polyamines and contain at least one primary or secondary amine nitrogen atom.

Claim 8

A fuel composition according to claim 6 in which said lower polyalkylene polyamine is ethylenediamine or diethylenetriamine.

Claim 9

Compounds of the formula ##STR2## wherein two R 3 groups attached to the same nitrogen atom may be taken together to form a 5-6 membered ring heterocyclic radical; wherein R 3 may be the same or different and selected from hydrogen, hydrocarbyl from 1 to 10 carbon atoms, hydrocarbonyl of 2 to 10 carbon atoms and a poly(oxyalkylene) group of the formula R--OC g H 2g -- j in which g is an integer from 2 to 5, j is an integer such that the molecular weight of the poly(oxyalkylene) group is from about 500 to about 5000, and R is a hydrocarbyl group of from 1 to about 30 carbon atoms; R 1 is the same or different alkylene or hydroxy-substituted alkylene group of 2 to 6 carbon atoms, R 2 is carbonyl, alkylene carbonyl or alkylene of 2 to 4 carbon atoms with vicinal linkages; wherein at least one of the R 3 groups is the poly(oxyalkylene) group, and at least a sufficient number of the oxyalkylene units, --OC g H 2g --, are branched-chain C 3 -C 5 units to render the compound soluble in oils of lubricating viscosity or hydrocarbons boiling in the gasoline range; and wherein a is 0 or 1, b is an integer from 0 to 4, c is 0 or 1, d is 0 or 1, f is 0 or 1 and equal to 1 when c is 0, and f+b+2c+e is equal to or greater than 2.

Claim 10

Compounds of the formula ##STR2## wherein two R 3 groups attached to the same nitrogen atom may be taken together to form a 5-6 membered ring heterocyclic radical; wherein R 3 may be the same or different and selected from hydrogen, hydrocarbyl from 1 to 10 carbon atoms, hydrocarbonyl of 2 to 10 carbon atoms and a poly(oxyalkylene) group of the formula R--OC g H 2g -- j in which g is an integer from 2 to 5, j is an integer such that the molecular weight of the poly(oxyalkylene) group is from about 500 to about 5000, and R is a hydrocarbyl group of from 1 to about 30 carbon atoms; R 1 is the same or different alkylene or hydroxy-substituted alkylene group of 2 to 6 carbon atoms, R 2 is carbonyl, alkylene carbonyl or alkylene of 2 to 4 carbon atoms with vicinal linkages; wherein at least one of the R 3 groups is the poly(oxyalkylene) group, and at least a sufficient number of the oxyalkylene units, --OC g H 2g --, are branched-chain C 3 -C 5 units to render the compound soluble in oils of lubricating viscosity or hydrocarbons boiling in the gasoline range; and wherein a is 0 or 1, b is an integer from 0 to 4, c is 0 or 1, d is 0 or 1, f is 0 or 1 and equal to 1 when c is 0, and f+b+2c+e is equal to or greater than 2.

Claim 11

A compound of claim 8 in which R 1 is propylene or ethylene.

Claim 12

Compounds of claim 8 in which c and d are equal to 0 and R 1 is selected from propylene and ethylene.

Claim 13

A fuel composition comprising a major portion of hydrocarbon boiling at the gasoline range and from 30 to 2000 ppm of the compond of claim 8.

Claim 14

A fuel composition comprising a major portion of hydrocarbon boiling in the gasoline range and from 30 to 2,000 ppm of the compound of claim 10.

Claim 15

The fuel composition of claim 1 which also contains from 100 to 5000 ppm of a fuel-soluble poly(oxyalkylene) alcohol, glycol or polyol.

Claim 16

The fuel composition of claim 13 in which the poly(oxyalkylene) is poly(oxypropylene).

Claim 17

A concentrate comprising an inert, stable oleophilic organic solvent boiling in the range from 150° to 400° F. and from 10 to 50 weight percent of the compound of claim 1.

Claim 18

A concentrate according to claim 15 which also contains poly(oxyalkylene) alcohol, glycol or polyol in the amount from 5 to 80 weight percent.