Patent GB-830727-A (GB)
Title: Compositions suitable as lubricating oil additives
IPC: C07F3/00
Filed: 1958-05-23
Abstract: A composition suitable as a lubricating oil additive comprises a neutralized mixture of (a) a phosphosulphurized alcohol, phenol or alkyl phenol and (b) the product obtained by phosphosulphurizing (i) a polymer or copolymer of an unsaturated ester or (ii) a hydrocarbon substance.  Phosphosulphurization may be effected by reacting the materials with one or more phosphorus sulphides or with a mixture of phosphorus and sulphur, while the neutralization may be effected with calcium or barium hydroxide or with an amine.  Materials which may be phosphosulphurized to obtain (a) are oxo alcohols, cyclohexanol, or alkyl phenols containing 4-15 carbon atoms in the alkyl groups. Esters which may be polymerized to produce (i) are esters of unsaturated alcohols with alpha, betaunsaturated carboxylic acids (which may carry halogen or hydroxyl or thiol groups as substituents), especially maleic or fumaric acid or the corresponding alkyl-substituted acids.  These esters may be copolymerized with other unsaturated esters (e.g. methacrylates or vinyl acetate), hydrocarbons (e.g. styrene), nitriles (e.g. acrylonitrile) or acid anhydrides (e.g. maleic anhydride).  The hydrocarbon substance may be a paraffin, olefin, diolefin, or olefin polymer, an acetylenic, aromatic, alkyl aromatic or cycloaliphatic hydrocarbon, a lubricating oil fraction or a condensation product of any of these with an aromatic hydrocarbon.  Lubricating oils to which the composition may be added are mineral, synthetic, animal or vegetable oils, and an anti-foaming agent may also be added to the lubricating oil.  In the examples, (a) is P2S5-treated C9 oxo alcohol or C12 alkyl phenol and (b) is P2S5-treated polybutene or oleyl fumarate/vinyl acetate copolymer.  The mixture of (a) and (b) is neutralized with barium hydroxide and added to mineral oil.ALSO:A composition suitable as a lubricating oil additive (see Group III) comprises a neutralized mixture of (a) a phosphosulphurized alcohol, phenol or alkyl phenol, and (b) the product obtained by phosphosulphurizing (i) a polymer or copolymer of an unsaturated ester, or (ii) a hydrocarbon substance. Phosphosulphurization may be effected by reacting the materials with one or more phosphorus sulphides or with a mixture of phosphorus and sulphur, while the neutralization may be effected with calcium or barium hydroxide or with an amine.  Materials which may be phosphosulphurized to obtain (a) are oxo alcohols, cyclohexanol, or alkyl phenols containing 4-15 carbon atoms in the alkyl groups.  The hydrocarbon substance (ii) may be a paraffin, olefin, diolefin, or olefin polymer, an acetylenic, alkyl aromatic or cycloaliphatic hydrocarbon, a lubricating oil fraction or a condensation product of any of these with an aromatic hydrocarbon.  In the examples, (a) is P2S5-treated C9 oxo alcohol or C12 alkyl phenol.ALSO:A composition suitable as a lubricating oil additive (see Group III) comprises a neutralized mixture of (a) a phosphosulphurized alcohol, phenol or alkyl phenol, and (b) the product obtained by phosphosulphurizing, (i) a polymer or copolymer of an unsaturated ester, or (ii) a hydrocarbon substance.  Phosphosulphurization may be effected by reacting the materials with one or more phosphorus sulphides or with a mixture of phosphorus and sulphur, while the neutralization may be effected with calcium or barium hydroxide or with an amine. Materials which may be phosphosulphurized to obtain (a) are oxo alcohols. cyclohexanol or alkyl phenols containing 4-15 carbon atoms in the alkyl groups. Esters which may be polymerized to produce (i) are esters of unsaturated alcohols with alpha, beta unsaturated carboxylic acids (which may carry halogen or hydroxyl or thiol groups as substituents), especially maleic or fumaric acid of the corresponding alkyl-substituted acids.  These esters may be copolymerized with other unsaturated esters (e.g. methacrylates or vinyl acetate), hydrocarbons (e.g. styrene), nitriles (e.g. acrylonitrile) or acid anhydrides (e.g. maleic anhydride).  The hydrocarbon substance may be an olefin polymer or a condensation product thereof with an aromatic hydrocarbon.  In the examples, (a) is P2S5-treated C9 oxo alcohol or C12 alkyl phenol, and (b) is P2S5-treated polybutene or oleyl fumarate/vinyl acetate copolymer. The mixture of (a) and (b) is neutralized with barium hydroxide.