Abstract:
A process is disclosed for manufacturing a lubricant composition comprising combining a superabsorbent polymer with a material for decreasing friction between moving surfaces. The superabsorbent polymer absorbs from about 25 to greater than 100 times its weight in water and may comprise a polymer of acrylic acid, an acrylic ester, acrylonitrile or acrylamide, including co-polymers thereof or starch graft co-polymers thereof or mixtures thereof. A product produced by the process includes the material for decreasing friction comprising a petroleum lubricant containing an additive, water containing an additive, synthetic lubricant, grease, solid lubricant or metal working lubricant, wherein the synthetic lubricant, grease, solid lubricant or metal working lubricant optionally contain an additive. A process comprising controlling the delivery of a lubricant to at least one of two moving surfaces in order to decrease friction between said moving surfaces, is also disclosed. This process includes applying the lubricant composition to at least one of the surfaces. The lubricant composition in this instance comprises a superabsorbent polymer combined with a material for decreasing friction between moving surfaces, wherein the material for decreasing friction comprises a petroleum lubricant, water, synthetic lubricant, grease, solid lubricant or metal working lubricant, and optionally an additive.
Abstract:
A method for treatment of bacterial infections with rifalazil administered once-weekly, or twice-weekly. A method for treatment of tuberculosis caused by Mycobacterium tuberculosis, infections caused by Mycobacterium avium complex, infections caused by Chlamydia pneumoniae and infections caused by Helicobacter pylori by administering to a patient suffering from the bacterial infection 1-100 mg of rifalazil once or twice a week. In this dose regimen, the treatment is fast, efficacious and eliminates undesirable secondary symptoms observed with daily doses of 1-50 mg of rifalazil.
Abstract:
A method for treatment of bacterial infections with rifalazil administered once-weekly or twice-weekly. A method for treatment of tuberculosis caused by Mycobacterium tuberculosis, infections caused by Mycobacterium avium complex, infections caused by Chlamydia pneumoniae and infections caused by Helicobacter pylori by administering to a patient suffering from the bacterial infection 1-100 mg of rifalazil once or twice a week. In this dose regimen, the treatment is fast, efficacious and eliminates undesirable secondary symptoms observed with daily doses of 1-50 mg of rifalazil.
Abstract:
A lubricant coating disposed between a substrate and a counter surface comprises a reaction layer immediately adjacent the substrate. A bonding layer is immediately adjacent the reaction layer, with the bonding layer comprising a first composition. A low friction, lubricious layer is immediately adjacent the bonding layer, with the lubricious layer comprising a second composition that is different from the first composition.
Abstract:
A threaded joint for an oil well pipe is provided which prevents the occurrence of galling at the time of repeated tightening and loosening and which provides a high degree of air tightness and has excellent galling resistance and air tightness without using a liquid lubricant such as a compound grease. 1. A lubricating film of an inorganic polymeric compound which has an M (metal element)nullO (oxygen) backbone and has a solid lubricant dispersed therein is formed on a threaded portion or an unthreaded metal contact portion. 2. A phosphate film and the lubricating film of the inorganic polymeric compound is formed on the threaded portion or the unthreaded metal contact portion. 3. A Cu plating layer and the lubricating film of the inorganic polymeric compound or a lubricating film of a resin in which a solid lubricant is dispersed is formed on the threaded portion or the unthreaded metal contact portion. 4. A lubricating film of the inorganic polymeric compound or a lubricating film of the polymer and a rust preventing film containing an alkali metal salt of a carboxylic acid or an alkali earth metal salt of a carboxylic acid are formed on the threaded portion or the unthreaded metal contact portion.
Abstract:
An article having a multiphase composite lubricant coating of a hard refractory matrix phase of titanium nitride dispersed with particles of a solid lubricating phase of molybdenum disulfide is prepared by heating the article to temperatures between 350.degree. and 850.degree. C. in a reaction vessel at a reduced pressure and passing a gaseous mixture of Ti((CH.sub.3).sub.2 N).sub.4, MoF.sub.6, H.sub.2 S and NH.sub.3 over the heated article forming a multiphase composite lubricant coating on the article.
Abstract:
Lubricant composition for use on workpieces in the hot forming of metals, which contains: (a.sub.1) 0 to 80 percent by weight of a glass powder, (a.sub.2) 0 to 50 percent by weight of a glass frit whereby the content of at least one component (a.sub.1) or (a.sub.2) in the lubricant composition is not 0 percent by weight, (b) 10 to 25 percent by weight of natural or synthetic graphite, (c) 5 to 20 percent by weight of one or more alkali metal silicates of the general formula Me.sub.2 O.n SiO.sub.2, where Me is lithium, potassium or sodium and n is a number between 1 and 4, (d) 1 to 6 percent by weight of a water-soluble sodium polymetaphosphate, (e) 0 to 3 percent by weight of a water-insoluble sodium polymetaphosphate,(f) 0.5 to 4 percent by weight of a thickener, and (g) 0 to 1 percent by weight of borax.
Abstract:
The present invention provides a specific hybrid series of transition metal polymer matrix composite sets which create durable friction reducing, wear, and corrosion resistance characteristics which can be used in a powder or liquid form, or, which can be bonded to a desired surface at ambient temperature. The specific components are combinations of polytetrafluoroethylene and molybdenum disulfide, polytetrafluoroethylene and tungsten disulfide, or tungsten disulfide and molybdenum disulfide. This invention brings together the unique properties of organic chemistry (polytetrafluoroethylene) and inorganic chemistry (tungsten disulfide, or molybdenum disulfide). This invention creates a synergistic interaction which enhances the wear resistance properties of polytetrafluoroethylene while simultaneously improving the friction reducing properties of molybdenum disulfide, or tungsten disulfide. The material functionality of this invention is greatly improved over the individual friction-reducing and wear-resistance capabilities of its constituent components being use independently. The invention comprises varying mixture sets of polytetrafluoroethylene and molybdenum disulfide, polytetrafluoroethylene and tungsten disulfide, or molybdenum disulfide and tungsten disulfide, depending upon the desired friction and wear-resistance needed. This invention can be introduced into the lubrication of mechanical components in powder form, in a colloidal dispersion, or, can be applied and caused to bond directly to a substrate surface through a variety of mechanisms and manners to form a lubricious and wear-resistant layer ranging from 0.5 microns to 60 microns thick.
Abstract:
A composition of matter for depositing a thin anti-friction film that has a coefficient of friction of 0.06 or less. The composition comprises (a) a mixture of solid lubricant particles, a thermoset resin, and a catalyst for setting the resin, and (b) an evaporative medium for carrying the mixture during deposition. A solid film lubricant system for protecting metal wear interfaces subject to high temperatures and wet lubrications, comprising an oil-attracting solid lubricant mixture with at least two elements selected from the group of graphite, MoS.sub.2 and BN; a support for the mixture to loads of at least 10 psi at temperatures of 600.degree.-800.degree. F. while being thermally stable; a thermally stable thermoset polymer matrix, the polymer having inherent hydrocarbon chemical attraction to form a tenacious oil film of the lubricating oil on the wearing surface. A method of making anti-friction coated surfaces comprising providing a light metal based cylinder surface; exposing nonoxidized metal of the surface; applying a high elastic modulus load-supporting metal layer onto at least portions of the light metal cylinder surface; and simultaneously distributing a solvent-based solid film lubricant mixture and thermoset polymer onto at least portions of the layer at about room temperature to form a coating of desired thickness.
Abstract:
An oxide type solid lubricant is formed of a powder of a fired composite ceramic material resulting from heating a mixture of BaZrO.sub.3 and Cr.sub.2 O.sub.3 powders in which the Cr.sub.2 O.sub.3 content is up to 80% by weight.
Abstract translation:氧化物型固体润滑剂由烧结的复合陶瓷材料的粉末形成,其通过加热其中Cr 2 O 3含量高达80重量%的BaZrO 3和Cr 2 O 3粉末的混合物而得到。