Abstract:
A lubricating composition of about 90 to about 99% by weight of a lubricant and about 1 to about 5% by weight of a polymeric organometallic phthalocyanine complex, including nitrogen-substituted analogues thereof, where the complexed metal ion is preferably a Group IVA metal and provides increased time of machine operation to failure by improving grease or oil lubricated bearing performance. The phthalocyanine is doped with an electrically conductive dopant to bleed internal charge build up from the internals of turbines and large drive motors.
Abstract:
A lubricant composition having improved extreme pressure and antiwear properties comprising a base lubricant and an additive consisting of from about 0.01 to about 30 weight percent of said lubricant of a mixture of a metal thiosulfate and a metal phosphate.
Abstract:
A sliding material used under a boundary lubricating conditions or mixed lubricating condition, and having improved, wear-resistance, low-friction property, and seizure-resistance, and consisting of (a) 10 to less than 69% of polyimide and/or polyamide-imide, from more than 30 to 68% of graphite, and, 1 to less than 30% of polytetrafluroethylene, MoS.sub.2, Pb, and/or BN, or (b) 20 to 90% of polyimide and/or polyamide-imide, and from 0.5 to 20% clay, mullite, silica, and/or alumina, and at least 5% and balance of graphite.
Abstract:
Reciprocating engine parts which involve substantially continuous frictional contact are coated with a solid film lubricant having excellent wear characteristics and adhesion. The parts in question are pistons, and the area to which the wear resistant solid lubricant film is bonded is the piston skirt--i.e., all or a portion of the area below the piston rings. The lubricant film is composed of a polyimide of 2,2-bis[4-(4-aminophenoxy)phenyl]hexafluoropropane ("4-BDAF") and an aromatic tetracarboxylic acid (or dianhydride or ester thereof) containing from 25 to 125 parts by weight of fluorinated carbon per 100 parts by weight of the polyimide resin ("phr"), and preferably about 30 to about 100 phr of the fluorinated carbon.
Abstract:
The present invention is a fluid which exhibits excellent electrorheological properties at low current densities, at high temperatures, and in the complete absence of absorbed water or water of hydration. In a preferred embodiment, the fluid comprises lithium hydrazinium sulfate dispersed in silicone oil, and in the presence of an appropriate suspension stabilizing agent.
Abstract:
A kit and process are provided for working metals, said kit comprising a metal nitride and/or metal carbonitride coated metal working tool and a water soluble metal working fluid, said fluid including a relatively large alkoxylated amine, an alkanol amine and an acid-derived compound selected from the group consisting of organic acids, inorganic acids, and salts thereof, and said process comprising contacting a metal workpiece with said metal working tool and said fluid to effectuate working of said metal.
Abstract:
Complex sulfides of antimony combined with either molybdenum disulfide or graphite are used as mixtures to impart synergistic effects in imparting extreme pressure and antiwear properties to lubricants.
Abstract:
An improved lubricating oil composition comprising a major amount by weight of oil of lubricating viscosity, a minor amount by weight of solid particles effective to improve the lubricating properties of the composition; and a minor amount of certain dispersant --VI improver materials. This composition provides improved inhibition of sludge and varnish formation in use.
Abstract:
Metal working operations, especially drawing, are facilitated by applying to the metal a composition which provides lubricity thereto and which melts within the range of about 30.degree.-100.degree. C. The composition comprises at least one ester of a carboxylic acid, with a carboxylic acid or derivative thereof, a phosphorus acid salt and an antioxidant being preferred optional ingredients. The composition may be applied in liquid from and solidifies on cooling to ambient and normal storage temperatures. Prior to application, the composition is preferably heated to a temperature higher than its melting temperature for ease of flow and uniform dispersion thereof onto the metal. In a preferred method of application, a reservoir is located beneath the composition applicator and composition is pumped therefrom to the applicator, preferably a roller coater, with excess composition being recirculated. Steam may be used both to heat the composition to melting point and purge the pump and circulation piping at the start and finish of each run.
Abstract:
An improved lubricating oil composition comprising a major amount by weight of oil of lubricating viscosity; a minor amount by weight of solid particles effective to improve the lubricating properties of the composition; and a minor amount of an oxidized olefin polymer which has been reacted with an aliphatic amine or polyamine. Preferably, this reaction occurs in the presence of a formaldehyde-yielding reactant. This composition provides improved inhibition of sludge and varnish formation in use.