Abstract:
The use of tris 2,4,4''-alkyldiphenylamines for stabilizing organic material and compositions thereof especially synthetic lubricating oils. Such compositions are stabilized against oxidative deterioration.
Abstract:
The invention relates to synthetic lubricants used at very high temperatures in the process of continuous casting of molten metals. The lubricants are applied as a liquid film to the surfaces of the molds into which the metal is poured. In continuous casting of steel the molten steel is poured into an open-bottomed mold of the desired product shape. The steel is cooled in the mold just enough to harden the exterior surface of the casting, which forms a shell or container that holds the balance of the liquid metal. The inner walls of the mold are continuously coated with a liquid lubricant as the metal is poured therein. The partially solidified casting is then continuously withdrawn from the bottom of the mold, where it is further cooled by water sprays until all the metal is solidified. The casting is cut as it descends through the equipment into desired lengths. The polyol esters of fatty acids having 12 to 22 carbon atoms, or mixtures thereof, are excellent lubricants for molds used in continuous casting of metals. The preferred polyols have two to 12 hydroxy groups and at least five carbon atoms, including for example, pentaerythritol or polymers thereof, trimethylol ethane, trimethylol propane, and glycols containing from two to 40 carbon atoms. Also included in these polyols are inositol, mannitol, sorbitol, glucose, sucrose, trimethylol benzene, hexamethylol benzene, methyl glucosides, polyglycerols and, in fact, any polyol capable of reacting with at least two selected fatty acid molecules to form a minimum of a diester.
Abstract:
HIGH TEMPERATURE LUBRICANTS COMPRISING HOMOGENEOUS MIXTURES OF 10 TO 90 PERCENT BY WEIGHT OF PERARYLATED SILANES WITH 90 TO 10 PERCENT BY WEIGHT OF SOLID MOS2, GRAPHITE, BN, ALUMINUM POWDER, OR LOW MELTING GLASS. THE COMPOSITIONS DISCLOSED HEREIN HAVE UTILITY IN MEETING THE ELEVATED TEMPERATURE LUBRICATION REQUIREMENTS OF THE METALWORKING INDUSTRY.
Abstract:
A LUBRICANT CONCENTRATE COMPOSITION WHICH COMPRISES FROM ABOUT 3 TO 75 PERCENT BY WEIGHT OF AN ALKALI METAL ORTHOPHOSPHATE, ABOUT 15 TO 97 PERCENT BY WEIGHT OF AN ALKALI METAL FATTY ACID SOAP, CONTAINING FROM ABOUT 8 TO 22 CARBON ATOMS, AND AT LEAST 0.1 PERCENT BY WEIGHT OF A SURFACE ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF NON-IONIC ETHYLENE OXIDE-ALCOHOL CONDENSATES AND AMPHOTERIC BIODEGRADABLE SURFACE ACTIVE AGENTS. ADDITIONALLY, THE CONCENTRATE COMPOSITION MAY CONTAIN FROM ABOUT 0.1 TO 80 PERCENT BY WEIGHT OF A WATER DISPERSIBLE DILUENT SELECTED FROM WATER SOLUBLE AND COLLOIDALLY SUSPENDABLE DILUENTS, SUCH AS SUGAR AND POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT FROM ABOUT 100 TO 10,000. AN AQUEOUS LUBRICANT COMPOSITION CONTAINING FROM ABOUT 10 TO 400 POUNDS OF THIS CONCENTRATE PER HUNDRED GALLONS OF SOLUTION MAY BE USED TO FORM A LUBRICANT COATING ON A CHEMICALLY COATED METAL SURFACE, SUCH AS A PHOSPHATE COATED METAL SURFACE, WHICH SURFACE MAY THEN BE DEFORMED AFTER THE LUBRICANT COATING HAS BEEN DRIED.