Patent GB-793608-A (GB)
Title: Process for the preparation of oil-soluble metal containing complexes
IPC: C10L1/18
Filed: 1956-04-20
Abstract: Lubricating or liquid fuel compositions comprise oil-soluble metal-containing complexes prepared by reacting wholly or partially hydrolysed copolymers of vinyl esters, e.g. vinyl acetate, and alkenes having at least 8 carbon atoms, e.g. C16-C18 alkenes, dissolved in an oil, with an oil-insoluble metal compound formed in situ in the reaction mixture.  Specified metal compounds are the oxides, hydroxides, carbonates, sulphides, sulphites and oxalates of calcium, aluminium, lead, manganese, iron, cobalt, nickel, copper, zinc, sodium, potassium, lithium and ammonium.  The oil, i.e. a liquid having a dielectric constant of 10 or less, may be benzene, toluene, xylene, pentane, heptane and gasoline to lubricating oil petroleum fractions, preferably mixed with water and/or water-miscible oxygen-containing organic liquids, e.g. methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, acetone, methyl ethyl ketone, diethyl ketone, methyl propyl ketone, cyclohexanone, diisopropyl ether, monomethyl and monoethyl ethers of glycol, 1,3-dioxane, 1,4-dioxane, ethyl acetate, ethyl lactate, ethyl propionate, n-propyl acetate and isopropyl acetate.  The metal-containing complexes may be added to mineral lubricating oil or to liquid fuels such as gasoline or fuel oil.  In an example the calcium carbonate complex of a hydrolysed vinyl acetate-alkene copolymer is added to a mineral lubricating oil.  Specification 754,773 is referred to.ALSO:Oil-soluble metal-containing complexes are prepared by reacting a wholly or partially hydrolysed copolymers of vinyl esters, e.g. vinyl acetate, and alkenes having at least 8 carbon atoms, e.g. C16-C18 alkenes, dissolved in an oil, with an oil-insoluble metal compound formed in situ in the rection mixture. The metal compounds may be oxides, hydroxides, carbonates, sulphides, sulphites or oxalates of calcium, aluminium, lead, manganese, iron, cobalt, nickel, copper, zinc, sodium, potassium, lithium or ammonium. The oil, i.e. a liquid having a dielectric constant of 10 or less, may be benzene, toluene, xylene, pentane, heptane and gasoline to lubricating oil petroleum fractions, preferably mixed with water and/or water - miscible oxygen - containing organic liquids, e.g. methanol, ethanol, propanol, isopropanol, n-butanol, isobutanol, acetone, methyl ethyl ketone, diethyl ketone, methyl propyl ketone, cyclohexanone, diisopropyl ether, monomethyl and monoethyl ethers of glycol, 1,3-dioxane, 1,4-dioxane, ethyl acetate, ethyl lactate, ethyl propionate, n-propyl acetate and isopropyl acetate.  The metal compounds may be formed by adding calcium or sodium hydroxide, dry or dissolved or suspended in water or an alcohol, and passing in carbon dioxide or sulphur dioxide, or by adding sodium carbonate to calcium chloride, or sodium or potassium hydroxide to calcium chloride or barium nitrate.  The reaction mixture may be heated to remove water and oxygen-containing liquids, the product air-blown, filtered and the solvent removed by distillation.  The complexes may be added to lubricating oils and greases, liquid fuels, e.g. fuel oils and gasolines, used as paint driers, biocides, catalysts and for preparing metal mirrors.  Specification 754,773 is referred to.