摘要:
Compositions are provided that include blends that consist essentially of 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-(trifluoromethyl)pentane, trans-1,2-dichloroethylene, and a third component. The third component is selected from methanol, ethanol, isopropanol, t-butanol, and 1-propanol. The blends form ternary azeotropes. Provided compositions can be useful for cleaning electronic parts, as coating solvent components, as heat transfer fluids, and as lubricants.
摘要:
Provided is a working fluid which is sealed in a liquid-sealed space in a device to be used, including: a first liquid and a second liquid which are insoluble with each other, wherein a weight of the second liquid contained is smaller than that of the first liquid, and the second liquid has a higher vapor pressure than that of a main component of the first liquid at the same temperature.
摘要:
The invention relates to a novel ultra-thin hydrophobic and oleophobic layer, formed by self-assembly on a solid substrate surface, of compounds of the general formula A-B in which A represents a group of the formula in which Z represents C or N+, X represents C—H or C-L, L being an electron-attracting group selected from F, CF3, NO2 and N(CH3)3+, Y represents H or CH5, or Y forms a 5- or 6-atom heterocycle with X, T represents NH, CO, CONH or NH2+U−, U− being a soluble anion, and B represents a C1-C20 linear aliphatic alkyl group partially or completely substituted with F, and a method of preparing this layer and its use as a harrier film.
摘要:
Disclosed is a method of manufacturing magnetic disks, comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate. In the process, a lubricant alpha comprising a compound denoted by chemical formula HO—CH2—CH(OH)—CH2—O—CH2—CF2(—O—C2F4)p-(O—CF2)q-O—CF2—CH2—O—CH2—CH(OH)—CH2—OH wherein p and q are natural number,and a compound denoted by chemical formula HO—CH2—CF2(—O—C2F4)m-(O—CF2)n-O—CF2—CH2—OH wherein m and n are natural number,is fractionated by molecular weight to prepare a lubricant a having a weight average molecular weight (Mw) of from 3,000 to 7,000 and a molecular weight dispersion of less than or equal to 1.2;a lubricant beta comprising a compound denoted by the chemical formula HO—CH2—CF2(—O—C2F4)m-(O—CF2)n-O—CF2—CH2—OH wherein m and n are natural number,is fractionated by molecular weight to prepare a lubricant b having a weight average molecular weight (Mw) of from 2,000 to 5,000 and a molecular weight dispersion of less than or equal to 1.2;a lubricant c comprising a mixture of lubricants a and b is prepared; anda film of lubricant c is formed on a protective layer provided on a substrate to form a lubricating layer. A magnetic disk comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate, in which the lubricating layer has been formed on the protective layer is also enclosed.
摘要:
High-temperature inhibitor materials for use with electrical connections in energy transmission and distribution systems where operating temperatures exceed 150° C. The high-temperature inhibitor materials comprise base oils and conductive particles, wherein the high-temperature inhibitor is stable at temperatures above 150° C.
摘要:
Disclosed is a method of manufacturing magnetic disks, comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate. In the process, a lubricant alpha comprising a compound denoted by chemical formula HOnullCH2nullCH(OH)nullCH2nullOnullCH2nullCF2(nullOnullC2F4)p-(OnullCF2)qnullOnullCF2nullCH2nullOnullCH2nullCH(OH)nullCH2nullOH wherein p and q are natural number, and a compound denoted by chemical formula HOnullCH2nullCF2(nullOnullC2F4)m-(OnullCF2)nnullOnullCF2nullCH2nullOH wherein m and n are natural number, is fractionated by molecular weight to prepare a lubricant a having a weight average molecular weight (Mw) of from 3,000 to 7,000 and a molecular weight dispersion of less than or equal to 1.2; a lubricant beta comprising a compound denoted by the chemical formula HOnullCH2nullCF2(nullOnullC2F4)m-(OnullCF2)nnullOnullCF2nullCH2nullOH wherein m and n are natural number, is fractionated by molecular weight to prepare a lubricant b having a weight average molecular weight (Mw) of from 2,000 to 5,000 and a molecular weight dispersion of less than or equal to 1.2; a lubricant c comprising a mixture of lubricants a and b is prepared; and a film of lubricant c is formed on a protective layer provided on a substrate to form a lubricating layer. A magnetic disk comprising a magnetic layer, a protective layer, and a lubricating layer on a substrate, in which the lubricating layer has been formed on the protective layer is also enclosed.
摘要:
High-temperature inhibitor materials for use with electrical connections in energy transmission and distribution systems where operating temperatures exceed 150null C. The high-temperature inhibitor materials comprise base oils and conductive particles, wherein the high-temperature inhibitor is stable at temperatures above 150null C.
摘要:
A lubricant composition comprising a perfluoropolyether lubricant and fluorinated ketone solvent is described. The lubricant composition can be applied as a coating to a substrate such as magnetic media. After the coating dries, a thin uniform lubricant film covers the substrate surface. The fluorinated ketone solvent can solubilize a wide range of perfluoropolyether compounds but not potential contaminants such as water and hydrocarbons. Additionally, the solvent has low potential to adversely affect global warming.
摘要:
A refrigerating machine oil composition which comprises, in the form of a blend, a base oil comprising a mineral oil or a synthetic oil and at least one species selected from the group consisting of a metallic salt of an inorganic phosphoric acid, e.g. potassium phosphate, an amine salt of an inorganic phosphoric acid, e.g. octylamine phosphate, a metallic salt of an organic phosphoric acid, e.g. dipotassium lauryl phosphate, an amine salt of an organic phosphoric acid, e.g. monooctylamine dioleyl phosphate, a metallic salt of an organic phosphonic acid, e.g. dipotassium oleyl phosphonate, an amine salt of an organic phosphonic acid, e.g. octylamine dilauryl phosphonate, a metallic salt of an organic phosphorous acid, e.g. sodium dioleyl phoshite, and an amine salt of an organic phosphorous acid, e.g. octylamene dioleyl phosphate.The refrigerating machine oil composition according to the present invention has excellent lubricating performance, enhances lubricity between an aluminum material and steel material, can suppress seizure and wear therebetween, does not bring about environmental pollution and thus is well suited as the lubricating oil for a refrigerating machine using, as the refrigerant, a hydrogen-containing Flon compound such as R134a.
摘要:
Phosphorus-free and ashless high-temperature aircraft and turbo engine lubricant that contains no halogens or hazardous substances is disclosed. The phosphorus-free lubricating oil may be prepared from pentaerythritol tetraester, methylolpropane triester, or their combinations, ashless dithiocarbamate additives, a dialkydiphenylamine, an alkylphenylnaphthylamine, a triazole derivative, a rest inhibitor or metal deactivator, and an anti-foam. The use of this lubricating oil in addition to its superior wear and friction performance over the standard lubricating oil provides a safe and an environmentally benign gas turbine engine oil for aircraft and turbo engines.