Abstract:
Derivatives of nuclear coupled alkylphenols, that is nuclear carbon-to-carbon coupling, have higher activity as lubricating oil addition agents than the same derivatives of the parent alkylphenols. For example, sulfonamides or products of the Mannich Reaction derived from coupled p-alkylphenolsulfonyl chloride and an amine or coupled alkylphenol, amine and formaldehyde have higher activity than the same derivatives from the parent p-alkylphenol. Two, three, four, five, six and up to seven molecules of alkylphenol can be coupled through nuclear carbon-to-carbon coupling in the presence of a lower alkanoic acid (e.g., acetic acid) solution of potassium dichromate and manganese acetate.
Abstract:
Lubricant additives exhibiting dispersant and viscosity-index (V.I.) improving properties are obtained by the amination of oxidized high molecular weight amorphous copolymers of essentially ethylene and propylene having a number average molecular weight of from about 1,500 to about 200,000 or more, and at least about 150 pendant methyl groups per 1,000 chain carbon atoms, with a primary or secondary aliphatic amine or polyamine, said reactants being employed in the molar ratio of from about 1:2 to about 1:20, respectively; the aminated oxidized copolymers having a number average molecular weight in the range of from about 1,500 to about 20,000 exhibit excellent dispersancy properties, while those having a number average molecular weight of at least about 20,000 exhibit bi-functional dispersancy and V.I. improving properties.
Abstract:
High molecular weight Mannich condensation products of (1) high molecular weight alkyl-substituted hydroxyaromatic compounds whose alkyl substituent has upward from 40 to 20,000 carbon atoms, (2) an amine which contains an AND (3) AN ALDEHYDE IN THE RESPECTIVE REACTANT MOLAR RATIO OF 1: 0.1-10:1.0-10 CONDENSED WITH A BORON COMPOUND ARE NOVEL DISPERSANT-DETERGENT LUBRICANT OIL ADDITION AGENTS. Solutions of those addition agents in lubricant oil are novel and unique compositions affording anti-sludge and varnish deposition and corrosion inhibition.
Abstract:
Nitration of an alkene with dinitrogen tetroxide under oxidizing conditions forms the corresponding vicinal nitro-, nitratosubstituted alkane. Reaction of about 1-4 mols of the nitronitrato alkane with 1 mol of an alkylamine or alkylene polyamine forms alkane nitro-amines containing vicinal nitro-, aminonitrogen groups. The alkane nitro-amines are useful as surfactants, rust or corrosion inhibitors, flotation agents and as additives in petroleum products.