Patent GB-749354-A (GB)
Title: Lubricating oil compositions
Inventor: DAVID VERNON WARNER
IPC: C10M161/00
Filed: 1954-06-11
Abstract: A liquid lubricating composition comprises a major proportion of a lubricating oil, a minor proportion of an oil-soluble halogen-containing organic compound containing at least two halogen atoms and no atoms other than halogen, carbon, hydrogen, oxygen and sulphur, and a minor proportion of an oil-soluble polyvalent metal salt of an alkylphenol-aldehyde condensation product containing no nitrogen.  The halogen-containing compound may be a halogenated lubricating oil or paraffin wax containing 20 to 70 per cent by weight of halogen, particularly a paraffin wax having a melting point of 100 DEG F. to 130 DEG F. chlorinated until it has a chlorine content of 30 to 50 per cent by weight; a halogenated fatty acid, such as a chlorostearic acid or chlorinated fatty oil or fat; a halogenated aromatic compound, such as chlorinated diphenyl, chlorinated diphenyl ether, chlorinated naphthalene containing at least two chlorine atoms in the molecule, and 1.1.1-trichloro-2.2-bis (41-chlorophenyl) ethane; a product obtained by the addition reaction of a carbon tetrahalide or a trihalomethane and an alkene-1 containing 8 or more carbon atoms, as described in Specification 622,311; a compound such as 2-trichloromethyl -4- phenyl -5- keto-1, 3-dioxolane or 1.1.1-trichloro -4- (41-chlorophenyl) but-2-en-4-one, as described in Specification 640,530; or a compound containing both sulphur and at least two halogen atoms in the molecule such as the reaction product of an olefin containing 6 or more carbon atoms with a sulphur halide.  The salt of an alkylphenol-aldehyde condensation product may be a calcium, barium, magnesium, strontium, zinc, aluminium, lead, iron, nickel, cobalt, copper, cadmium, manganese, chromium or tin salt of the product of an alkylphenol, preferably containing at least four carbon atoms in the alkyl group, such as octylphenol, isooctylphenol, amylphenol, diisobutylphenol, octylnaphthol and diisobutylphenol sulphonic acid, reacted with formaldehyde or acetaldehyde or a polymer thereof, or crotonaldehyde, benzaldehyde or furfuraldehyde.  The lubricating oil may be a mineral oil or a synthetic oil, and may be mixed with fatty oil, such as castor oil or lard oil.  Suitable synthetic oils are those produced by polymerizing olefins or by alkylating aromatic hydrocarbons with olefins or alkyl halides, ester lubricating oils, such as dialkyl esters of dicarboxylic acids, e.g. di-(2-ethylhexyl) sebacate or adipate, and alkyl and alkaryl esters of inorganic acids, e.g. trioctyl or tricresyl phosphate and tetraoctyl silicates, polymers and copolymers of polyalkylene glycols and esters and ethers thereof, and polyorganosiloxanes. The composition may comprise 0.1 to 2.5 per cent by weight of halogen-containing compound and 0.001 to 2.5 per cent by weight of the metal salt.  Lists are given of detergents anti-oxidants, antirusting compounds, and extreme pressure agents, which may be added.  The composition may also include pour point depressants, viscosity index improvers and antifoaming agents. Specification 650,291 is referred to