Abstract: A cleaning agent for removing a residue of soldering flux, which essentially consists of mono-, di-, or tri-alkylene glycol mono branched C.sub.3 -C.sub.5 alkyl ether, which can remove with high safety both ionic residues and resinous materials contained in a soldering flux, which remain on the surface of a soldered electronic substrate. The cleaning agent of the present invention does not adversely affect the insulation and materials used in an electronic device.

Abstract: Herein is provided a color filter prepared by providing red, green and blue image elements, comprising as photosensitive resin and a pigment, and a black matrix on a transparent substrate and further providing thereon a transparent electrode layer, wherein said photosensitive resin is so formulated that it comprises a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator comprising a 2-mercapto-5-substituted thiadiazole compound represented by general formulas (I) and/or general formulas (II), a phenyl ketone compound represented by general formulas (III) and 2,4,5-triphenylimidazolyl dimer composed of two lophine residues combined to each other through intermediation of a single covalent bond.A pattern having a high precision and a good surface smoothness can be obtained owing to the photosensitive resin, and a color filter having a good environmental resistance can be obtained owning to the pigment.

Abstract: A composition of nonlinear optical materials is disclosed which comprises two or more organic compounds, at least one of which is a first organic compound with a .pi.-electron conjugated system containing an electron-donative substituent group and an electron-attractive substituent group.

Abstract: A color filter prepared by providing red, green and blue picture elements and a black matrix, all comprising a photosensitive resin and a pigment, on a transparent substrate and a transparent electrode layer on the surface, wherein said photosensitive resin comprises a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator composed of at least one member selected from the group consisting of halomethyloxadiazole compounds and halomethyl-triazine compounds.The color filter provided herein gives a pattern having a high precision and a high surface smoothness owing to the photosensitive resin and exhibits a good environment resistance owing to the pigment.

Abstract: A method for making a relief pattern of a cured resin on a transparent colored layer which comprises applying a coating of a photocurable resin composition whose spectral sensitivity varies depending on the pH of the composition, on a transparent colored layer, adjusting the pH of the composition to a predetermined level, and exposing the coating to visible light irradiation through the transparent colored layer. The irradiated layer is developed to obtain a relief pattern corresponding to visible spectra transmitted through the transparent colored layer.

Abstract: Color sheets for thermal transfer printing comprise a substrate having a colorant layer on one side of the substrate and a resin layer formed on one side of the substrate and a resin layer formed on the other side of the substrate, the resin layer being made of a resin composition comprising fine particles and a lubricating material dispersed in a binder resin. The resin layer is made rough on the surface there of due to the presence of the fine particles whereby the color sheets do not stick to thermal heads and the resulting images are free of dropout defects and good in quality.

Abstract: Dye-receiving sheets for thermal recording which comprise a support and a dye-developing or receiving layer formed on the support. The layer is made of a composition comprising a dispersion of inorganic fine particles uniformly dispersed throughout a binder of a mixture comprising a first resin having good dye receptivity or good affinity for dyes and a second resin immiscible with the first resin. The binder mixture of two different types of resins allows microscopic interstices to exist at or along boundaries of the resins, through which interstices dye molecules penetrate and chemically combine with and/or adsorb on active sites of the inorganic particles and the first resin.

Abstract: A dye transfer sheet for heat-sensitive recording is described which comprises a substrate, and a thin layer of at least one sublimable dye formed on one side of the substrate. The dye layer comprises non-sublimable particles uniformly distributed throughout the layer to form irregularities on the layer surface.

Abstract: An oil-impregnated capacitor comprising a thin insulator sheet solely consisting of a plastic film and impregnated with an insulating oil, the aptitude of which is defined by both the oil absorption and the expansion coefficient of the film.

Abstract: There is disclosed an oil impregnated electric device in which an element of the device is impregnated with a mixture of an arylalkane compound such as 1,1-phenylxylyl ethane and an organic phosphorus compound such as phosphate or phosphite. Such electric device has a high power density (i.e., capable of withstanding high electric field) and a high reliability.