Abstract:
Certain preferred embodiments of the present invention relate to compositions for the production of sintered molded parts, components/parts produced therefrom, and methods for preparing such compositions. In accordance with certain embodiments, compositions for production of sintered molded parts comprise a metal-based, a ceramic-based, and/or a polymer-based powder, and a compaction aid, having 25 to 60 weight percent of a polyglycol, based on the total weight of the compaction aid, and 40 to 75 weight percent of a montan wax, based on the total weight of the compaction aid. The compaction aid may be present in an amount from about 0.1 to 5 weight percent, preferably 0.5 to 1.5 weight percent, based on the total weight of the composition. The composition may also include a lubricant such as, for example, MoS2, WS2, BN, MnS, and/or carbon.
Abstract:
A lubricant suitable for use in an industrial forming process, especially cold pilgering, comprises a polyglycol as base fluid, a water-soluble inorganic filler and an organic filler.
Abstract:
A method for treating the phosphate sludge waste from phosphate conversion baths used in the metal forming and metal working industry is described whereby the phosphate sludge is completely converted into a lubricant additive which can be used in lubricant formulations for the metal forming and metal working industry as well as general purpose lubricants. By operation of this process, waste treatment and waste disposal problems associated with the phosphate sludge are essentially eliminated. Various dry-soap lubricant formulations, warm forming lubricant formulations, non-reactive lubricant formulations, and metal precoat formulations containing the recovered or recycled phosphate sludge additive are described. The lime normally contained in many of these lubricant formulations can be significantly reduced or essentially eliminated by using the recovered phosphate sludge additive of this invention, thereby resulting in improved lubricant formulations. The recovered phosphate sludge is especially useful as an Extreme Pressure Additive.
Abstract:
A process for producing a mixture of sulfides of alkaline earth metal salts of an alkylhydroxybenzoic acid and an alkylphenol comprising the steps of: reacting a mixture of a phenol, a dihydric alcohol and an alkaline earth metal oxide and/or hydroxide (hereinafter referred to as an alkaline earth metal reagent) in an amount of no more than 0.99 gram equivalents per gram equivalent of said phenol; distilling off water and the dihydric alcohol until the amount of the dihydric alcohol becomes no more than 0.6 moles per mole of the alkaline earth metal reagent; reacting the resulting distillation residue with carbon dioxide; and reacting the resulting product with elemental sulfur in an amount of 0.1-4.0 moles per mole of the alkaline earth metal reagent.
Abstract:
A lubricating oil additive is prepared by reacting a triglyceride with a basic nitrogen compound to form a reaction product, reacting said reaction product with an acidic molybdenum compound to form an intermediate reaction product, and reacting said intermediate reaction product with a sulfur compound to produce a lubricating oil additive.
Abstract:
The cloud point of a hydrodewaxed base stock is reduced by direct sulfurization of the base stock, or by direct sulfurization of the base stock in the presence of a magnesium, calcium or barium compound.
Abstract:
Dry powdered wire drawing lubricant compositions are disclosed for the most severe drafting conditions in which mixtures of polymers of Poly (3,5-dithio-1,2,4-thiadiazole) and Poly (2,5-dithio-1,3,4-thiadiazole) act synergistically with molybdenum disulfide as extreme pressure additives. The polymers of Poly(3,5-dithio-1,2,4-thiadiazole) and Poly(2,5-dithio-1,3,4-thiadiazole) can also be used as the sole extreme pressure additive in the wire drawing lubricants.
Abstract:
A stabilized lubricating oil resistant to oxidation and sludge formation upon exposure to an oxidative environment is prepared without forming undesirable color bodies therein by the steps (1) contacting the lubricating oil stock with a small amount of added elemental sulfur of from about 0.05 to about 1.0 percent by weight at a contact temperature of from about 25.degree. C. to about 130.degree. C. and (2) contacting the product of step (1) with hydrogen in the presence of alumina impregnated with at least about 10 weight percent MoO.sub.3 and at least about 2.5 weight percent CoO to remove any unreacted added elemental sulfur therefrom. The impregnated alumina catalyst of step (2) must have at least 50 percent of the pores with a pore diameter of 50 Angstrom Units or more.
Abstract:
THIS SPECIFICATION DISCLOSES INHIBITION OF FOAMING IN A LIQUID SYSTEM CONTAINING WATER AND A HYDROCARBON. INHIBITION IS EFFECTED BY THE PRESENCE IN THE SYSTEM OF PARTICLES OF A SOLID, INSOLUBLE MATERIAL. THESE PARTICLES HAVE A SURFACE AREA OF LESS THAN 50 SQUARE METERS PER GRAM AND A PORTION OF THEIR SURFACES IS OCCUPIED BY POLAR SITES. REPRESENTATIVE SOLID MATERIALS ARE POLY-2,6-DIMETHYL-1,4-PHENYLENE OXIDE, A COPOLYMER OF 2,6-DIMETHYL PHENOL AND 2METHYL-1,6-TETRADECYL PHENOL WHEREIN THE PROPORTION OF THE LATTER COMPOUND DOES NOT EXCEED ABOUT 20 PERCENT BY WEIGHT OF THE COPOLYMER, A COPOLYMER OF VINYL STEARATE AND MALEIC ANHYDRIDE, SUBLIMED SULFUR, SILICON CARBIDE, AND POLYTETRAFLUOROETHYLENE COMMINUTED UNDER CRYOGENIC CONDITIONS.