Additives for lubricants and fuels

A method for making an amination product for use as an additive for fuels and lubricants, the amination product having combined dispersant and antioxidant functionality, the method comprising the steps of:

• providing a hydrocarbyl substituted succinic acylating agent to a reaction vessel;
• heating the acylating agent to an elevated temperature above room temperature;
• contacting an aromatic polyamine with an aliphatic polyamine to provide a polyamine mixture, wherein the molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10;
• and
• reacting the amine mixture with the heated acylating agent under an inert atmosphere to provide the novel amination product, wherein the amination product contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the hydrocarbyl substituted succinic acylating agent, wherein the composition further comprises a bis-succinimide-amide of the structure:
• wherein PIB is polyisobutylene, x is an integer from 1 to 6, y is an integer from 1 to 10, and R7 is selected from the group consisting of H, amine salt, and a metal salt.

An oil-soluble composition comprising a compound of the formula:

• wherein R4 is selected from the group consisting of linear and branched polyolefins and substituted olefins wherein the olefin-substituent has the structure:
• wherein R6 is selected from one or more linear or branched aliphatic polyamines, aromatic polyamino group derived from N-phenyl-1,4-phenylenediamine, N-phenyl-1,3-phenylenediamine, and N-phenyl-1,2-phenylenediamine, and mixtures thereof and substituted aromatic polyamines of the structure:
• wherein R1 is selected from the group consisting of H, —NH2, —NH-aryl-NH2, —NH-aryl-alkyl-NH2, —NH-alkyl-NH2, —NH-aryl, —NH-aryl-alkyl, —NH-alkyl, or a branched or straight chain radical having 4 to 24 carbon atoms that can be alkyl, alkenyl, alkoxy, arylalkyl, hydroxylakyl, and aminoalkyl, R2 is selected from the group consisting of —NH2, —NH(CH2)n)mNH2, —CH2—(CH)n—NH2, and -aryl-NH2, in which n and m have a value from 1 to 10, R3 is selected from the group consisting of —H, alkyl, alkenyl, alkoxy, arylalkyl, and alkaryl having 4 to 24 carbon atoms and with the proviso that only one of R2 and R3 has a terminal NH2 group, and R5 is selected from one or more linear or branched aliphatic polyamines, aromatic polyamino group derived from N-phenyl-1,4-phenylenediamine, N-phenyl-1,3-phenylenediamine, and N-phenyl-1,2-phenylenediamine, and mixtures thereof and substituted aromatic polyamines of the structure:
• wherein R1, R2, and R3 are defined above, and substituted linear or branched aliphatic polyamines, wherein the substituent is selected from H, a hydrocarbyl-substituted succinic anhydride group, an amido acid group, and a diamido group, wherein the composition further comprises a bis-succinimide-amide of the structure:
• wherein PIB is polyisobutylene, x is an integer from 1 to 6, y is an integer from 1 to 10, and R7 is selected from the group consisting of H, amine salt, and a metal salt.

A multi-functional composition for use as an additive for fuels and lubricants comprising a reaction product of a polyamine mixture and a hydrocarbyl substituted succinic acylating agent, said reaction product comprising a bis-succinimide of the structure:

• wherein x is an integer ranging from 1 to 6, and y is an integer ranging from 1 to 10, and PIB is a linear or branched polyisobutylene group;
• and wherein the polyamine mixture contains aliphatic and aromatic polyamines each having one or more amino groups and the molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10;
• and wherein the composition contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the bis-succinimide, wherein the reaction product further comprises a bis-succinimide-amide of the structure:
• wherein PIB, x and y are as defined above, and R7 is selected from the group consisting of H, amine salt, and a metal salt.

A multi-functional composition for use as an additive for fuels and lubricants comprising a reaction product of a polyamine mixture and hydrocarbyl-substituted succinic acylating agent, said reaction product a compound of the structure:

• wherein R2 is selected from the group consisting of —NH2, —NH(CH2)n)mNH2, —CH2—(CH2CH2)n—NH2, and -aryl-NH2, in which n and m have a value of from 1 to 10, and R3 is selected from the group consisting of —H, alkyl, alkenyl, alkoxy, arylalkyl, and alkaryl having 4 to 24 carbon atoms;
• and wherein the polyamine mixture contains aliphatic and aromatic polyamines each having one or more amino groups and the molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10;
• and wherein the composition contains at least about 0.1 molar equivalent of the polyamine mixture to 1 molar equivalent of the compound, wherein the reaction product further comprises a bis-succinimide-amide of the structure:
• wherein PIB is polyisobutylene, x is an integer from 1 to 6, y is an integer from 1 to 10, and R7 is selected from the group consisting of H, amine salt, and a metal salt.