Additives for lubricants and fuels
View Patent ↗A multi-functional composition for use as an additive for fuels and lubricants. The composition includes an amination product of a hydrocarbyl substituted succinic acylating agent and a mixture containing an aliphatic polyamine and an aromatic polyamine. The molar ratio of aliphatic polyamine to aromatic polyamine in the mixture ranges from about 10:0.1 to about 0.1:10. 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.
1. An oil-soluble composition comprising a compound selected from the group consisting of bis-succinimide-di-amide-amines of the structure:
wherein PIB is polyisobutylene, x is an integer from 1 to 6, y is an integer from 1 to 10, R 2 is selected from the group consisting of —NH 2 , —NH(CH 2 ) n ) m NH 2 , —CH 2 —(CH 2 CH 2 ) n — NH 2 , and -aryl-NH 2 , in which n and m have a value of from 1 to 10, and R 3 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 R 2 and R 3 has a terminal NH 2 group; bis-succinimides containing an imide-amine substituted olefin of the structure:
wherein PIB, x, y, R 2 , and R 3 are as defined above and bis-succinimide-amides containing an imide-amine substituted olefin of the structure:
wherein PIB, x, y, R 2 , and R 3 are as defined above, and R 7 is selected from the group consisting of H, amine salt, and a metal salt.
2. An oil-soluble composition comprising a bis-succinimide-amide containing an intramolecular-cyclized or intermolecular cross-linked amide-amine containing a structure represented by:
wherein R 8 is bonded to a secondary nitrogen atom in a polyamine of a bis-succinimide.
3. A lubricant additive containing the composition of claim 1 .
4. A lubricant containing the lubricant additive of claim 2 .
5. A fuel additive containing the composition of claim 1 .
6. A fuel containing the fuel additive of claim 4 .