| abstract |
Lubricating and fuel oil compositions comprise, as detergents and dispersants, amines of formula <FORM:1083610/C4-C5/1> where R is a branched chain alkyl or halogen-substituted alkyl radical having a molecular weight of 420 to 3000 and at least one branch per 6 chain carbon atoms, and A and B are hydrogen, C1- 10 hydrocarbyl or hydroxyhydrocarbyl, or are joined to form with the nitrogen a 5- or 6-membered heterocyclic ring. The compounds may be prepared by reacting a chlorinated or brominated olefin polymer, e.g. a polymer of propylene, isobutylene, butene-1, pentene-1, 3-methylbutene-1 or 4-methylpentene-1, or a copolymer of ethylene and isobutylene, with ammonia or an amine. The lubricating oil may be a naphthenic, paraffinic or asphaltic oil, synthetic hydrocarbon oil, e.g. propylene, butylene or octene-1 polymers, polyalkylene oxide, carboxylic ester, e.g. octyl adipate, nonyl azelate, decyl suberate or butyl alkenylsuccinate, or a phosphate or silicate ester; and may also contain oxidation inhibitors, e.g. metal dithiophosphates and S-alkyl or S-polyoxyalkylene phosphorodithioates, extreme pressure agents, pour-point depressants, viscosity index improvers, antiwear agents, rust and corrosion inhibitors and other detergents and dispersants. The fuel may be a gasoline containing anti-knock agents, e.g. tetraethyl lead or tetramethyl lead, and lead scavengers, e.g. dichlorobenzene or ethylene dibromide. Products obtained by reacting chlorinated polyisobutylene with (1,2 and 8) ammonia, (4) methylamine, (5) ethanolamine and (7) dimethylamine; and by reacting chlorinated polypropylene with (3 and 6) ammonia are added to SAE 30 base lubricating oils and gasoline.ALSO:Amines of formula <FORM:1083610/C3/1> where R is a branched chain alkyl or halogen-substituted alkyl radical having a molecular weight of 420 to 3000 and at least one branch per 6 chain carbon atoms, and A and B are hydrogen, C1- 10 hydrocarbyl or hydroxyhydrocarbyl, or are joined to form with the nitrogen a 5- or 6-membered heterocyclic ring, may be prepared by reacting an aliphatic branched chain hydrocarbon halide with ammonia or an amine. The halide may be a halogenated olefin polymer, e.g. a chlorinated or brominated polymer of propylene, isobutylene, butene-1, pentene-1, 3 - methylbutene - 1 or 4 - methylpentene - 1 or copolymer of ethylene and isobutylene, and may be reacted with the amine in the absence or presence of an inert solvent, e.g. hydrocarbons and alcohols. The products may be used as detergents and dispersants in lubricating and fuel oil compositions. Many examples of amines according to the invention are given and examples describe the halogenation of polyisobutylene in benzene or carbon tetrachloride with chlorine gas; the reaction of the resulting polyisobutenyl chloride with (1, 2 and 8) ammonia, (4) methylamine, (5) ethanolamine and (7) dimethylamine; and the reaction of polypropenyl chloride with (3 and 6) ammonia. |