摘要:
To provide a composition for a heat cycle system having less influence over the ozone layer, having a low global warming potential and having excellent durability, and a heat cycle system. A composition for a heat cycle system comprising a working fluid containing trifluoroethylene and difluoromethane, and a lubricating oil, wherein the interaction distance (Ra 1123 ) between trifluoroethylene and the lubricating oil as determined from the Hansen solubility parameters is shorter than the interaction distance (Ra 32 ) between difluoromethane and the lubricating oil.
摘要:
The invention relates to novel electrorheological fluids (ERF) based on polymers, comprising organic dopants. The invention also relates to uses of said fluids.
摘要:
1. A liquid composition for use in compression refrigeration, air-conditioning and heat pump systems comprises: (A) a fluoroalkene containing from 2 to 5 carbon atoms and at least 1 but no more than 2 double bonds; and (B) an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight per cent of lubricant is added to said fluoroalkene the mixture has one liquid phase at at least one temperature between -40 and +70°C, wherein said organic lubricant is a polyalkylene glycol having a viscosity in the range from 20 to 200 centistokes at about 37°C.
摘要:
Disclosed is a lubricant for solid surfaces, especially skis, comprising a partially fluorinated compound of formula RF-(A)a-(O)b-(B)c-(D)d-(RF)e, wherein RF represents a perfluorinated radical of formula F(CF2)n-, n represents a number between 1 and 20, A represents C1-C30 alkylene, preferably C1-C18 alkylene, B represents arylene having 6 to 14 C atoms or a saturated or unsaturated monocyclic or polycyclic hydrocarbon having 3 to 30, preferably 3 to 18, C atoms, D represents hydrogen or C1-C30 alkyl, preferably C1-C18 alkyl, a represents zero or 1, b, c, and d represent zero, 1, or 2, and e represents zero or 1 provided that b and c do not simultaneously represent zero.
摘要:
High cohesion silicone grease, characterized in that it comprises at least one diorganopolysiloxane oil polymer, 10 -30 % organometallic soap by weight and 5 - 20 % chlorinated paraffin by weight. Use of said grease as a treatment agent and/or protection and/or lubrication agent in the field of moveable metal parts, offering good cohesion, particularly when cold, making it possible to prevent slip inter alia, particularly when cold, between parts which are involved in a drive device.
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 compatibilizing a conventional, non-polar, compression refrigeration lubricant and a hydrofluorocarbon and/or hydrochlorofluorocarbon refrigerant in a compression refrigeration apparatus. Additionally, these compositions promote efficient return of lubricant from the non-compressor zones to the compressor zones of the aforesaid refrigeration apparatus.
摘要:
The present invention provides a composition for cutting or abrasive working operations that comprises at least one lubricious additive and at least one hydrofluorocarbons. The present invention also provides a method for cutting or abrasive working.