Abstract:
A lubricating agent including an ionic liquid formed from a Bronsted acid (HX) and a Bronsted base (B), wherein the Bronsted base has a linear hydrocarbon group having 10 or more carbon atoms and the difference between the pKa value of the Bronsted acid in water and the pKa value of the Bronsted base in water is 12 or more.
Abstract:
This invention relates to the use of ionic liquids as lubricants in vapor compression systems for cooling or heating. This invention also relates to an apparatus for adjusting temperature that operates a vapor compression cycle.
Abstract:
A solid lubricant for being embedded in pores or grooves formed at a sliding surface of a sliding member body, comprises 5 to 30% by volume of a polyethylene resin, 20 to 60% by volume of a hydrocarbon-based wax and 10 to 60% by volume of melamine cyanurate. Such a solid lubricant can exhibit sliding properties identical to or higher than those of lead-containing solid lubricants, even under high load conditions.
Abstract:
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, Cl, Br, I, CF3, NO2 and N(CH3)3+, Y represents H or CH3, 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 an unsubstituted C1-C20 linear aliphatic alkyl group, or a C1-C20 linear aliphatic alkyl group partially or completely substituted with F, and a method of preparing this layer and its use as an epilame or barrier film.
Abstract:
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.
Abstract:
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, Cl, Br, I, CF3, NO2 and N(CH3)3+, Y represents H or CH3, or Y forms a 5- or 6-atom heterocycle with X, T represents NH, CO, CONH or NH2−U−, U− being a soluble anion such as e.g. F−, Cl−, Br−, I, OH−, NO3−, HSO4−, SO42−, CO32−, HCO3− or SCN−, and B represents an unsubstituted C1-C20 linear aliphatic alkyl group, and a method of preparing this layer and its use as an epilame.
Abstract:
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, Cl, Br, I, CF3, NO2 and N(CH3)3+, Y represents H or CH3, or Y forms a 5- or 6-atom heterocycle with X, T represents NH, CO, CONH or NH2+U−, U− being a soluble anion such as e.g. F−, Cl−, Br−, I, OH−, NO3−, HSO4−, SO42−, CO32−, HCO3− or SCN−, 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 an epilame.
Abstract:
In a fluid dynamic pressure bearing device using ionic liquid as lubricant, a shaft member and a sleeve member are not corroded by the ionic liquid and static electricity generated is not accumulated. Aluminum with an oxide film formed on its surface is used as the material of the shaft member 11 and the sleeve member 12 and aluminum exposure portions B1, B2 are provided on the surfaces making contact with the ionic liquid, other than dynamic pressure generating grooves, of the shaft member 11 and the sleeve member 12. Accordingly, the shaft member 11 and the sleeve member 12 are kept substantially in the same electric potential through the ionic liquid.
Abstract:
Embodiments relate to lubricants disposed over magnetic storage media, such as rotatable thin film magnetic discs. One embodiment comprises a lubricant compound of a fluoropolyether chain having one or more carbonyl-imide pairs. In one aspect, the carbonyl-imide pair may be located at one end, both ends, and/or in the middle of the fluoropolyether chain. Another embodiment comprises a method of manufacturing a magnetic storage medium comprising forming a magnetic layer over a substrate. Then, a lubricant topcoat is applied over the magnetic layer. The lubricant topcoat may comprise a fluoropolyether having one or more carbonyl-imide pairs. Still another embodiment comprises a magnetic storage medium including a substrate, a magnetic layer formed over the substrate, and a lubricant topcoat formed over the magnetic layer. The lubricant topcoat may comprise a fluoropolyether having one or more carbonyl-imide pairs.