摘要:
The invention provides a heterocycle-substituted aromatic compound represented by the following Formula (I). In Formula (I), one of R2, R3, and R4 is Ry at a meta- or para-position with respect to Rx, R1, R2, R3, R4 and R5 not including Ry each independently representing a hydrogen atom, a substituted or unsubstituted aliphatic group having 1 to 30 carbon atoms, or a sulfonate group, where R1, R2, R3, R4 and R5 not including Ry are not hydrogen atoms all together; Rx and Ry each independently represent the following heterocyclic substituent, R6 and R7 in the heterocyclic substituents each independently representing a hydrogen atom or methyl group, and A representing a five-membered or six-membered heterocyclic group containing at least one nitrogen atom.
摘要:
A lubricating oil composition, which comprises a perfluoropolyether base oil, and a fluorine-containing polyether diphosphonic acid ester, represented by the following general formula: (R2O)(R1O)P(O)(CH2)aCF(CF3)[OCF2CF(CF3)]bO(CF2)cO[CF(CF3)CF2O]dCF(CF3)(CH2)eP(O)(OR3)(OR4) (where R1, R2, R3, and R4 are hydrogen atoms, alkyl groups, cycloalkyl groups, aryl groups, alkylaryl groups, aralkyl groups, or any of the foregoing groups can be halogen atom-substituted groups, subscripts a, b, c, d, and e are in conditions of 2≦a+e≦8, b+d≦28, and 1≦c≦10, and b and d can be 0), and a grease composition which further contains a thickening agent in addition to the lubricating oil composition, have distinguished abrasion resistance and rust preventiveness without deteriorating the heat resistance inherent in the lubricating oil and the grease containing a perfluoropolyether oil as a base oil.
摘要:
Polymeric polyol ester additives for metal working applications are described that have lower pour points and improved solubility in API Group II and III basestocks. The polymeric polyol ester contains linear monocarboxylic acid, alkanedioic acid, alk(en)yl substituted succinic acid or anhydride, trihydric alcohol and pentaerythritol.
摘要:
In an electro-rheological composition comprising an electrical insulating medium and solid particles dispersed therein, insulating solid particles possessed of morphological anisotropy are used as the solid particles. In a preferred embodiment, the insulating solid particles mentioned above are plate-like insulating solid particles, preferably plate-like insulating solid particles having a diameter (particle diameter) not less than 1 μm, more preferably plate-like aluminum oxide particles having a diameter not less than 1 μm. In another preferred embodiment, the insulating solid particles which have undergone a surface treatment with organic molecules or a semiconducting inorganic material, particularly the insulating solid particles having a metal oxide such as tin oxide and titanium oxide adhered to the surfaces thereof are used as the particles. Still another preferred embodiment is the ER composition of which electrical insulating medium is gelled.
摘要:
The use of sealants based on organosilanes for refrigeration and air conditioning systems is made possible by control of the rate of introduction and viscosity of the sealant mixture within certain ranges. An appropriate choice of organosilane sealant is made to allow effective sealing of small pinhole size leaks in the air conditioning or refrigeration system. The organosilane is then combined with a miscible lubricant at particular ratios to provide the proper mixture viscosity for injection into the refrigerant system to prevent bearing seizure. Specific orifice sizes are selected for an apparatus to ensure that the composition is injected at the flow rates required to prevent liquid slugging and subsequent compressor shutdown or failure. In addition, effective introduction of the mixture requires certain procedures be performed. Injection procedures are also described that prevent temporary or catastrophic equipment shutdown.
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 efficeint return of lubricant from the non-compressor zones to the compressor zones of the aforesaid refrigeration apparatus.
摘要:
The present invention relates to compositions comprising flammable refrigerant, fire hazard-reducing agent, and optionally a lubricant suitable for use in a refrigeration or air conditioning apparatus. Further, the present invention relates to compositions comprising lubricant and fire hazard-reducing agent and methods for reducing flammability of flammable refrigerant, for delivering a fire hazard-reducing agent to a refrigeration or air conditioning apparatus, and for replacing a non-flammable refrigerant with a flammable refrigerant.
摘要:
Provided are azeotrope-like compositions comprising difluoroethane and trifluoroiodomethane, azeotrope-like compositions comprising difluoroethane, tetrafluoropropene and trifluoroiodomethane, and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
摘要:
Oil composition is provided containing a major amount of a natural and/or synthetic base oil and, as a marking substance, a detectable level of one or more compounds of formula IV compound supported thereon, such that the marking substance gives a colour reaction A method for detecting the presence of a marking substance in an oil composition is provided, wherein the oil composition is contacted with a test strip having an acidic upon contact with the test strip.
摘要:
The invention relates to resource operating medium compositions containing additivated lubricants based on polyalkylene glycols and/or neopentyl polyol esters, which are additivated with alkylated triaryl phosphate esters which are suitable for lubricating refrigerators, air-conditioning systems, heat pumps and similar systems which are operated using carbon dioxide as an operating medium.