Abstract:
PROBLEM TO BE SOLVED: To obtain a lubricant molding slightly cracking or chipping at a low cost regardless of a production method. SOLUTION: The lubricant molding 3a is composed of at least two kinds of higher fatty acid metal salts having different numbers of carbons. The higher fatty acid metal salt contains at least one kind of a filler selected from preferably silica, alumina, tungsten disulfide, molybdenum disulfide, graphite fluoride, graphite, boron nitride, polytetrafluoroethylene (PTFE), ethylene-tetrafluoroethylene (ETFE) and polyvinylidene fluoride (PVDF). The higher fatty acid metal salt is preferably composed of at least two kinds of higher fatty acid metal salts having different metal salts. The higher fatty acid metal salts may comprise resin foam pieces or resin foam blocks mixed therein. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A process for producing molybdenum oxysulfide dithiocarbamate (MoDTC) by reacting ÄAÜ an aqueous solution or suspension prepared by reacting (a) a compound having hexavalent molybdenum, with (b) an alkali hydrogensulfide or an alkali sulfide, ÄBÜ a carbon disulfide, ÄCÜ a secondary amine and ÄDÜ a mineral acid, wherein ÄEÜ a reducing agent is added and reacted at any stage, and a lubricating oil composition containing the compound obtained according to said process. MoDTC can be efficiently produced in high yields by using a hexavalent molybdenum compound as a starting material, and the produced MoDTC has low corrosive action, excellent wear characteristics and excellent lubricating properties.
Abstract:
1438215 High temperature metal working lubricant LONZA Ltd 15 Oct 1974 [8 May 1974 6 Sept 1974] 44571/74 Heading C5F A high temperature metal working lubricant comprising by wt. (a) 10-90% graphite, (b) 2-60% polymer or copolymer of an ethylenically unsaturated compound, (c) 0À2-8% dispersion or suspension agent, (d) 0-40% film stabilizer. The unsaturated monomers may be vinyl esters, allyl esters, mono- or diolefins, acrylic acid or esters thereof, styrene or unsaturated dicarboxylic acid esters. The dispersion or suspension agent (c) may be a polysaccharide, an alkyl cellulose, or an alginate. The film stabilizer (d) may be a sodium silicate, boron oxide, a phosphate, silicic acid or a mixture thereof. Polymers used in the examples are a vinylacetate-dibutyl maleate copolymer, polyisobutylene, acrylic acid-styrene copolymer, ethylene - vinylacetate copolymer and polyvinylacetate.
Abstract:
PURPOSE: A modified graphite fluoride, obtained by partially decomposing a graphite fluoride by irradiation with electromagnetic waves, having improved lubricity characteristics, and suitable for a solid lubricants. CONSTITUTION: A modified graphite fluoride obtained by decomposing and modifying within 0.01W50wt%, preferably 0.1W10wt%, range graphite fluoride (GF), consisting of (CF) n or/and (C 2 F) n , and having generally 0.01W100μ particle diameter under irradiation with electromagnetic waves. Electromagnetic waves of any wavelengths generally called the electromagnetic waves within about 10 -17 W10 5 m wavelength region, may be used, but preferably the wavelength is within 10 -4 W10 -7 cm range. An organic solvent, e.g. ethanol, or water containing a surfactant is used as a dispersing agent for the GF. An aqueous solution of an alkali, e.g. NaOH, is used for accelerating the decomposition rate of the GF. When the resultant modified GF is used as a lubricant, the moldability of a molding material is improved due to the good dispersibility in oil, etc. and good compatibility with a resin, and a lower specific abrasion ratio than the unmodified GF is exhibited. COPYRIGHT: (C)1984,JPO&Japio
Abstract:
The invention concerns a threaded portion of a tubular element for a threaded tubular connection hiving an axis of revolution, the portion comprising a threading extending over its outer or inner peripheral surface, and a first sealing surface on the peripheral surface, the first sealing surface being capable of producing metal-metal interference with a corresponding second sealing surface belonging to a complementary threaded portion of a tube. The threading and the first sealing surface are coated with a metallic anti-corrosion and anti-galling layer wherein zinc (Zn) is tie major element by weight.
Abstract:
Lubrication and friction reduction improves fuel efficiency and reduces energy consumption. Effective and controllable material removal results in superior surface finishing and planarization. Nanosheets are developed with specific functionalization that can be used to reduce friction and wear, improve the fluidic property, and rheological performance.. The nanosheets can be from the graphite family, transition metal dichalcogenides, transition metal trichalcogenides, semiconducting chalcogenides, metal oxides, layered hydroxides, clays, ternary transition metal carbides and nitrides, and zirconium phosphates and phosphonates, and their corresponding dopants. Tribological, rheological, and polishing applications include lubricants, viscosity modification, and chemical-mechanical planarization. The nanosheets are useful in improving efficiency and lifetime of machinery, saving energy for mechanical operations, and optimizing manufacturing processes in surface engineering.