摘要:
An antioxidant for lubricating oils comprising an amine compound selected from substituted benzylamines or a substituted 1-amino-1,2,3,4- tetrahydro-naphthalene. The preferred antioxidants are N-(alpha -methyl -p -octylbenzyl) aniline, N-(alphamethylbenzyl)- p -nonylaniline or 1-( p -dodecylanilino)-1,2,3,4- tetrahydronaphthalene.
摘要:
The invention comprises a novel stabilizing system useful for imparting resistance to oxidative breakdown comprising:
(1) a metal deactivator azine of the formula: where:
R, and R 2 can be hydrogen, alkyl with 1-12 carbon atoms, alkoxy with 1-12 carbon atoms, carbalkoxy with 1-12 carbon atoms, halogen, hydroxy, nitro and amino groups and X 1 and X 2 can be hydrogen, alkyl with 1-12 carbon atoms or di-, tri- or tetramethylene bridges to the aromatic ring.
(2) an amine; (3) a metal compound selected from the group consisting of metals or metal salt; and (4) a lubricating oil selected from the group consisting of polyester based oils, mineral oils or synthetic hydrocarbon oils.
摘要:
Lubricating oils are stabilized against oxidative degradation by the use of a stabilizer system comprising (A) an amine wherein the amine is a substituted benzylamine, or a substituted 1-amino-1,2,3,4-tetrahydronaphthalene, (B) a metal deacturator and (C) a metal or metal salt. Optionally a metal deactivator can be incorporated into the system. The preferred substitute benzylamine is N-(alphamethylbenzyl)aniline, the preferred naphthalamine is phenyl-alphanaphthalamine.