Abstract: Use of a compound having a hydrophobic moiety attached to a hydrophilic moiety, wherein the hydrophilic moiety comprises a ?-keto acid group and the hydrophobic moiety is attached via a bond from a carbon or an oxygen of the hydrophobic moiety to a carbon of the ?-keto acid group, provided that the ?-carbon of the ?-keto acid group does not form part of a carboxyl or ester group, or a salt thereof, as a surfactant. A dispersion comprising said surfactant as a dispersing agent. A microemulsion comprising said surfactant. A method for breaking a dispersion comprising said surfactant as a dispersing agent, said method comprising the steps of a) providing said dispersion at a temperature where it is substantially stable; and b) setting the temperature of said dispersion, so as to achieve a desired decomposition rate of the surfactant. A method for reducing the surface tension between a liquid and another phase, comprising adding to the liquid said surfactant.

Abstract: The present invention provides nanoparticle based recording mediums, inks and ink compositions, methods of making nanoparticle based recording mediums and inks, nanoparticles and methods for making nanoparticles, methods for stabilizing colorants against electromagnetic radiation (including radiation in the visible wavelength range), methods for enhancing the substrate independent durability performance of inks, and methods for color density control. The nanoparticle based inks deliver better color, color density control, improved printability, enhanced durability, and increased lightfastness, and are capable of being printed on woven and non-woven fabrics and paper products without special treatment or other limitations.

Abstract: An electric device comprising a conductor and a porous conductor insulation impregnated with a dielectric fluid. Where the dielectric fluid comprises; a polymer; and a hydrocarbon-based fluid. The dielectric fluid being composed such that a part of the polymer molecule interacts with the hydrocarbon based fluid or another part in the polymer molecule in such a way that the dielectric fluid; at temperatures within a first low temperature range is in a highly viscous and elastic, essentially gelled, state; at elevated temperatures within a second higher temperature range, is in low viscosity easy flowing and essentially newtonian state; and that the viscosity of the dielectric fluid is, over a third limited temperature range, the transition range, changed between the low viscosity state and the highly viscous state. The transition range comprises temperatures between the first and the second temperature ranges.