Abstract:
Compositions containing a reverse micelle comprising a first compound and a second compound are disclosed, wherein the second compound is configured to change conformation in response to a stimulus, a first conformation selected for formation of the reverse micelle, and a second conformation selected for disruption of the reverse micelle; and wherein the first compound is selected to interact with the first conformation of the second compound to form the reverse micelle.
Abstract:
The invention relates to a high-temperature lubricant for use in the hot-forming of high-grade steels and carbon steels, said lubricant containing graphite, organic aerating agents and inorganic parting agents. The invention also relates to the use of such a lubricant. The aim of the invention is to provide a high-temperature lubricant that can be used for a wide range of steel qualities for various wall thicknesses and extensions to be obtained by rolling and that is temperature-stable, allows uniform rolling results with varying wall thicknesses and/or steel qualities and does not lead to the undesired carburization of the rolling stock. For this purpose, the high-temperature lubricant according to the invention comprises at least the following components in weight percent, based on the solids content: (a) 40 to 90% by weight of graphite, (b) 2 to 50% by weight of organic aerating agents, (c) 5 to 50% by weight of inorganic parting agents, the organic aerating agent (b) being selected from the group consisting of melamine, melam, melem, melon, phosphate salts and polyphosphate salts of the aforementioned compounds having phosphate chain lengths in the range of n = 1 to 1000, reaction products and addition products of the aforementioned compounds with cyanuric acid or isocyanuric acid and mixtures thereof, and the inorganic parting agent (c) being a layered silicate or a mixture of layered silicates.
Abstract:
A lubrication system having an oil filter modified to replace or supplement the performance of lubricant additives that may be used within an internal combustion engine to increase the performance of a lubricant is described. The formulation of the lubricant is changed in accordance with the chemicals placed in the oil filter. For example, when the oil filter contains a strong base, the lubricant concentration of detergent will decrease, in some cases to zero, while the dispersant concentration in the lubricant will increase. The dispersant is the ideal weak base to neutralize combustion acid at the piston ring zone, carry the resultant weak base- combustion acid complex to the strong base in the oil filter, undergo ion exchange with the strong base, immobilize the acid in the oil filter and recycle the dispersant back to the piston ring zone for reuse as an acid neutralization agent. The reduction or elimination of detergent from the lubricant will reduce the fouling of the emission filter and of deposit formation on engine parts such as the piston. The oil filter may also contain an additive which is slowly released into the lubricant. For example, a ZnDDP anti-wear additive may be slowly released from the oil filter to the lubricant. Because the ZnDDP has low molecular weight alkyl groups it has limited solubility in the lubricant. The rate of release is limited by the equilibrium concentration of the additive in the lubricant. As a result, a relatively constant concentration of the additive may be maintained in the lubricant. The resultant closed system allows the oil drain intervals to be significantly extended.
Abstract:
La présente invention concerne des compositions sous forme d'émulsion d'huile silicone destinées ô être appliquées sur les vessies de vulcanisation en tant que qu'agent démoulant lors de la fabrication de pneumatiques.
Abstract:
An additive composition containing an antioxidant and a dispersant that reduces the soot content in lubricating oil in an engine and/or the emission of an engine. Further, a process for employing the additive composition to decrease the amount of soot in the lubricating oil of an engine and/or decrease the emissions from an engine.
Abstract:
Two high temperature lubricants adapted to be applied by an airless spray system are disclosed. The first is designed for use at temperatures of between 200 to 315 ° C and comprises a combination of water, graphite, montmorillonite, xanthan gum, surfactant/defoamer and a preservative. The second is designed for use of temperatures between 425 and 540 ° C and includes any combination of water, silicate resin, surfactant/defoamer,
Abstract:
A silicon elastomer compatible constant velocity joint grease comprises a urea grease composed of a lubricating oil and a urea thickener and an effective amount of a friction reducing additive package comprising vermiculite, molybdenum oxysulfide dithiocarbamate, polyphenylene sulfide and potassium triborate. The additive package solids have particle sizes below about 40 microns.
Abstract:
The invention relates to a swellable phylloscilicate on the basis of smectite or sepiolith/palygorskite for use in media that reduce swellability and that contain bivalent or polyvalent cations, characterized by a swelling volume of about 5 to 50 ml, measured by adding 2 g phyllosilicates (absolutely dry) to 100 ml water, and by a fineness of maximally 5 % by weight > 40 mu m or maximally 20 % > 20 mu m, as the dry screening refuse.