摘要:
A process for drawing wire employing a lubricant comprising perfluorocarbon compounds (PFCs), including aliphatic perfluorocarbon compounds ( alpha -PFCs) having the general formula CnF2n+2, perfluoromorpholines having the general formula CnF2n+1ON, perfluoroamines (PFAs) and highly fluorinated amines (HFAs), and perfluoroethers (PFEs). Such fully and highly fluorinated carbon compounds exhibit a very high degree of thermal and chemical stability due to the strength of the carbon-fluorine bond. Further, because the compounds are fully fluorinated, and therefore do not contain chlorine and bromine, they have zero ozone depletion potential (ODP). Further, because the compounds are photochemically non-reactive in the atmosphere, they are not precursors to photochemical smog and are exempt from the United States Environmental Protection Agency (EPA) volatile organic compound (VOC) definition. Further, because they are volatile, the compounds are easily removed at the end of the process without need for an additional cleaning step. The process provides wire at significantly higher production speeds and longer die life with improved quality and less byproduct debris.
摘要:
Azeotrope-like compositions comprising C2F5CF(OCH3)CF(CF3)2 (1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane) and an organic solvent, and uses thereof, are described.
摘要:
The present invention provides compositions that are useful for compatabilizing a conventional, non-polar, compression refrigeration lubricant and a hydrofluorocarbon and/or hydrochlorofluorocarbon refrigerant in a compression refrigeration apparatus. Additionally, these composition promote efficient return of lubricant from the non-compressor zones to the compressor zones of the aforesaid refrigeration apparatus.
摘要:
A mold releasing agent comprising a silicon-containing compound represented by the formula: R nSiR 4-n wherein R is (R and R are a hydrocarbon group having 1 to 4 carbon atoms), R is a hydrocarbon group having 1 to 4 carbon atoms or a halogenated hydrocarbon group having 1 to 4 carbon atoms, n is 3 or 4, and a silicon- and/or fluorine-containing compound having at least two hydroxyl groups or alkoxyl groups in one molecule. The mold releasing agent of the present invention is excellent in mold releasing property, has a long life, provides a good surface finishing of molded article, and has no influence on secondary processability.
摘要:
Fire resistant hydraulic fluid compositions comprising (a) one or more esters of polyhaloaromatic acids per se or in combination with (b) one or more hydraulic fluids independently selected from mineral oil, poly- alpha -olefins, alkylated aromatics, cycloaliphatics, esters of dibasic acids, polyol esters, polyglycols, silicones, silicate esters, phosphate esters, and halogenated compositions other than (a); a method for imparting fire resistant properties to known hydraulic fluids by adding one or more esters of polyhaloaromatic acids alone or combined; and the use of the inventive compositions as fire resistant hydraulic fluids. The fire resistant compositions may, optionally, contain one or more shear-stable polymers which have been found to increase the fire resistance of the hydraulic fluid composition.
摘要:
Disclosed is a lubricant oil composition comprising :
(A) a fluorine-containing aromatic compound, and (B) an alkyl- or alkyl derivative-substituted aromatic compound having a kinetic viscosity of from 0.1 to 500 cSt as measured at 40 °C, wherein :
the compound (A) is represented by the formula :
wherein X represents an oxygen or a sulfur atom ; n is an integer of from 1 to 4 ; R represents an n-valent, unsubstituted or substituted aromatic group having from 6 to 60 carbon atoms ; and R f represents an unsubstituted or partially substituted fluorocarbon group having from 1 to 25 carbon atoms; and
the compound (B) comprises at least one substituted aromatic nucleus, wherein a substituent is an unsubstituted or substituted alkyl group having from 1 to 30 carbon atoms, or a derivative thereof. The lubricant oil composition having a kinetic viscosity of from 2 to 500 cSt as measured at 40 °C. The lubricant oil composition exhibits not only excellent miscibility with hydrofluorocarbon refrigerants and hydrofluoroether refrigerants over a wide temperature range, but also satisfy all requirements of properties for use thereof as a lubricant in refrigeration equipment, that is, low temperature fluidity, low moisture absorption properties, high electrical insulation, prolonged durability, and excellent lubricating properties.
摘要:
A nonflammable composition that is useful for applying silicone lubricants to the surfaces of medical articles is described. The composition includes a highly fluorinated organic compound, a fluorine-free solvent, and a silicone lubricant.
摘要:
Beschrieben werden als Trenn- und Kühlschmiermittel geeignete flüssige Zusammensetzungen, die 1-Chlor-2,2,2-trifluorethyl-difluormethylether und ein schmierend und/oder trennend wirkendes Agens und gegebenenfalls weitere für Trenn- und Kühlschmiermittel übliche Zusätze enthalten. Ebenfalls beschrieben wird deren Verwendung als Trenn- oder Kühlschmiermittel sowie ein Verfahren zu deren Herstellung.