Organo transition metal salt/ashless detergent- dispersant phenolic antioxidant combinations

Claim 2

A hydrocarbon-soluble composition comprising: (A) one or more transition metal salts of at least one organic acid; (B) at least one hydrocarbon-soluble ashless dispersant; and (C) at least one phenolic antioxidant.

Claim 3

A composition as claimed in claim 1 wherein the organic acid is a carboxylic acid, phosphoric acid, sulfonic acid or mixture of two or more of these.

Claim 4

A composition as claimed in claim 2 wherein the organic acid contains at least about 7 carbon atoms.

Claim 5

A composition as claimed in claim 3 wherein the metal is chosen from the group consisting of copper, scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel and mixtures of two or more of these.

Claim 6

A composition as claimed in claim 4 wherein the acid is a carboxylic acid, sulfonic acid or mixture thereof.

Claim 7

A composition as claimed in claim 5 wherein the metal is manganese.

Claim 8

A composition as claimed in claim 6 wherein the salt (A) is an overbased salt.

Claim 9

A composition as claimed in claim 7 wherein the dispersant (B) is a nitrogen-containing dispersant, a nitrogen free ester dispersant or a mixture thereof.

Claim 10

A composition according to claim 1 wherein the phenolic antioxidant (C) is selected from the group consisting of hindered phenols and hindered bisphenols corresponding to the formulae: (I) (II) wherein said R groups are independently hydrogen or aliphatic hydrocarbon radicals containing from 1 to about 8 carbon atoms with the proviso that at least one of said R groups is said aliphatic hydrocarbon radical in a position ortho to the phenolic hydroxyl group and wherein X is a radical selected from the group consisting of alkylidene radicals containing from 1 to about 4 carbon atoms and thio and dithio radicals.

Claim 11

A composition according to claim 9 wherein the phenolic antioxidant is at least one hindered phenol corresponding to the formula (I) wherein two of said R groups are aliphatic hydrocarbon radicals containing from 1 to about 8 carbon atoms and substituted in both positions ortho to the phenolic hydroxyl group.

Claim 12

A hydrocarbon-soluble composition comprising: (A) one or more transition metal salts of at least one organic acid; (B) at least one hydrocarbon-soluble ashless dispersant; (C) at least one phenolic antioxidant; (D) at least one demulsifier; and (E) substantially inert solvent-diluent.

Claim 13

A hydrocarbon-soluble composition comprising: (A) one or more transition metal salts of at least one organic acid; (B) at least one hydrocarbon-soluble ashless dispersant; (C) at least one phenolic antioxidant; (D) at least one demulsifier; and (E) substantially inert solvent-diluent.

Claim 14

A composition as claimed in claim 11 where (A) is an overbased manganese salt of a carboxylic acid, a sulfonic acid or mixture thereof; (B) is an acylated nitrogen-containing dispersant; and (C) is a phenolic antioxidant substituted in at least one of the positions ortho to the phenolic hydroxyl group with a branched-chain alkyl radical containing from 1 to about 8 carbon atoms.

Claim 15

A fuel composition comprising a major amount of fuel and a minor amount of the composition of claim 1.

Claim 16

A fuel composition as claimed in claim 13 wherein the fuel is normally liquid.

Claim 17

A normally liquid fuel composition comprising a major amount of distillate fuel oil and an amount of those compositions of claim 1 sufficient to give the fuel composition a transition metal content of about 1-500 ppm.

Claim 18

A normally liquid fuel composition comprising a major amount of distillate fuel oil and an amount of those compositions of claim 12 sufficient to give the fuel composition a transition metal content of about 5-200 ppm.

Claim 19

An additive concentrate comprising about 10-99% by weight of the composition of claim 1 and a substantially inert, normally liquid organic diluent.

Claim 20

An additive concentrate comprising about 10-99% by weight of the composition of claim 11 and a substantially inert, normally liquid organic diluent.