Invert emulsions of improved extreme pressure properties
AssigneeElco Corporation
InventorsDonald A. Lee, Philip S. Korosec
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Abstract
Stable water-in-oil invert emulsions suitable for use as fire-resistant lubricants and as fire-resistant hydraulic fluids of improved extreme pressure (E.P.) properties are disclosed. A mixture of polyisobutenyl succinic anhydride, a member selected from the group consisting of a vegetable or animal oil or a mixture thereof, and a mono alpha-unsaturated olefin is sulfurized under heat. The sulfurized mixture is then reacted with a hydrophile on an equivalent basis. This compound is then blended with suitable base stock to form an invert emulsion with improved E.P. and anti-wear properties.
Claims9
A stable water-in-oil emulsion, suitable as a fire resistant fluid, comprising 50-80 parts mineral oil, 20-50 parts water and 2-10 parts of the reaction product of (1) the reaction product of sulfur with a mixture of polyisobutenyl succinic anhydride, at least one member selected from the group consisting of animal oil, mono esters of unsaturated fatty acids and vegetable oil, and a mono-alpha-unsaturated olefin and (2) a hydrophile selected from the group consisting of ammonia, alkyl amines, aryl amines, polyamines, alcohols and alcoholamines wherein the reaction product (1) is formed at a temperature within the range of from about 175.degree. to 200.degree. C, and, wherein the reaction product of (1) and (2) is formed at the reflux temperature of the mixture of components (1) and (2).
Dependencies are inferred from the claim text.