Abstract:
THIS INVENTION CONCERNS SYNERGESTIC COMBINATIONS OF INORGANIC NITRITES AND CERTAIN AMINES WHICH WHEN INCORPORATED INTO ALKALI-METAL SOAP AND/OR ALKALINE EARTH METAL SOAP BASED GREASES INHIBIT CORROSION.
Abstract:
GREASES THICKENED WITH CONVENTIONAL GREASE THICKENERS AND CONTAINING A CLOUDY-TYPE OVERBASED ALKALI METAL OR ALKALINE EARTH METAL SULFONATE OR CARBOXYLATE DISPERSANT AND A WATER-SOLUBLE CORROSION INHIBITING SALT. CORROSION INHIBITING CONCENTRATES ARE ALSO SET FORTH WHICH COMPRISES LUBRICATING OIL, CLOUDY-TYPE OVER-BASED DISPERSANTS, AND WATER-SOLUBLE CORROSION INHIBITING SALTS.
Abstract:
AN ALKALI METAL SALT AND PARTICULARLY A LITHIUM SALT OF SALICYLIC ACID OR RELATED HYDROXY BENZOIC ACID IS INCORPORATED INTO A LUBRICATING OIL OR GREASE AS AN ANTIOXIDANT BY SPONIFYING AN ALIPHATIC ALCOHOL ESTER OF THE HYDROXY BENZOIC ACID AND THEN REMOVING THE WATER AND ALCOHOL FORMED IN THE REACTION. IMPROVEMENTS OVER PRIOR ART METHODS INCLUDE BETTER PARTICLE SIZE DISTRIBUTION AND LOWER COST.
Abstract:
A lubricating grease having extreme pressure (e.p.) properties comprising a major amount of lubricating oil and minor amounts of colloidal asbestos, finely divided polymeric fluorocarbon powder having a melting point (m.p.) above 450* F. and a powdered inorganic grease thickener. The colloidal asbestos is characterized by its chrysolite configuration and by its separate distinct fibers. The polymeric fluorocarbon is selected from the group consisting of polytetrafluoroethylene and fluorinated ethylene propylene copolymer. The inorganic thickeners are selected from the group consisting of talc, graphite and Group I, II and IV metal oxides and carbonates.
Abstract:
A lubricating grease containing lubricating oil, a complex fatty acid salt thickener, a complex aluminum salt and colloidal asbestos demonstrates excellent structural stability, extreme pressure properties and resistance to hardening under static conditions at high temperatures. The colloidal asbestos is distinguished over art-known asbestos by its randomly oriented, mattelike flakes and agglomerates of visible asbestos filaments.
Abstract:
Aqueous compositions, useful per se as lubricants or for forming dry lubricating films, comprising a finely divided solid lubricant suspended in an aqueous solution of an alkali metal silicate and an alkali metal lignosulfonate. Methods for making such compositions and for coating metal fasteners therewith. Metal fasteners lubricated with such compositions.
Abstract:
THE RECOVERY OF MANNITOL FROM AQUEOUS SOLUTIONS OF MANNITOL AND SORBITOL IS IMPROVED BY SEPARATING THE MANNITOL IN THE FORM OF PLATE CRYSTALS, GROWN BY SEEDING THE SAID SOLUTION, AT A TEMPERATURE BELOW THE SATURATION TEMPERATURE FOR MINNITOL, WITH MANNITOL CRYSTALS IN PLATE FORM. MANNITOL CRYSTALS IN PLATE FORM ARE OBTAINED BY FEEDING AN AQUEOUS SOLUTION CONTAINING DISSOLVED MANNITOL AND SORBITOL INTO A VESSEL CONTAINING A SLURRY OF MANNITOL CRYSTALS IN AN AQUEOUS SOLUTION OF MANNITOL AND SORBITOL, WHILE MAINTAINING THE SLURRY AT A TEMPERATURE BELOW THE SATURATION TEMPERATURE OF THE FEED SOLUTION WITH RESPECT TO MANNITOL, AND WITHDRAWING TOTLA MIXTURE FROM THE VESSEL AT THE SAME RATE AS THE FEED SOLUTION IS ADDED, THE SAID RATE BEING SUCH AS TO ESTABLISH AN AVERAGE HOLDING TIME OF FROM 2 TO 15 HOURS IN THE VESSEL, AND CONTINUING THE ADDITION OF FEED SOLUTION AND WITHDRAWAL OF TOTAL MIXTURE UNTIL THE SUSPENDED MANNITOL CRYSTALS ARE IN THE FORM THE PLATES.
Abstract:
A water-insensitive hydraulic fluid composition comprising from about 54.5 to about 92 percent by weight of at least one borate ester, from 0 to about 20 percent by weight of a polyoxyalkylene glycol and from about 3 to about 43 percent by weight of a glycol monoether or diether diluent together with minor amounts of an alkaline buffer and an antioxidant, if desired. Such waterinsensitive hydraulic fluids are high boiling compositions suitable for use as brake fluids.
Abstract:
Lubricating compositions useful for lubricating high-temperature alloys are prepared by adding organosilicon compounds containing silicon-bonded ethyl groups substituted with iodine, with bromine or chlorine, and with alkoxy, acyloxy or hydroxy groups to oils of lubricating viscosity.