Abstract: The invention provides a retardation film, composed primarily of an acrylic polymer, with transparency, heat resistance, and large retardation. The retardation film of the present invention is composed primarily of an acrylic polymer. The film has an in-plane retardation of from 130 nm to 500 nm, inclusive, per 100 ?m thickness at a wavelength of 589 nm. The film has a total light transmittance of not less than 85%. The retardation film has a glass transition temperature of preferably from 110° C. to 200° C., inclusive. The acrylic polymer, which is the primary component, preferably has a lactone ring structure.

Abstract: A display device capable of easily and reliably obtaining an intermediate tone and reliably maintaining individual colors including the intermediate tone even at stoppage of application of an electrical voltage, a manufacturing method of a display device capable of easily and reliably manufacturing the display device, and an electronic apparatus provided with the display device are provided. The display device has a display surface.

Abstract: An electrophoretic display sheet capable of increasing pressure resistance and bleed resistance of microcapsules and constructing an electrophoretic display device stably operable for a long period of time, a highly reliable electrophoretic display device and a highly reliable electronic apparatus are provided. The electrophoretic display sheet includes a base substrate having one major surface, and a microcapsule-containing layer provided on the side of the one major surface of the base substrate and having one major surface, the microcapsule-containing layer including a plurality of microcapsules, each of the microcapsules having a shell and an electrophoretic dispersion liquid containing at least one kind of electrophoretic particles and encapsulated into the shell, wherein the microcapsules exist in a generally spherical shape within the microcapsule-containing layer.

Abstract: The coating composition for electrophoretic display devices according to the present invention contains microcapsules for electrophoretic display devices and a binder resin, wherein the binder resin has a glass transition temperature (Tg) in a range of from ?85° C. to ?10° C. as calculated by FOX formula and has a residual monomer concentration of 500 ppm or lower in a solid content thereof. The sheet for electrophoretic display devices according to the present invention has a microcapsule layer formed from the above-described coating composition for electrophoretic display devices on a base material sheet. The sheet for electrophoretic display devices according to the present invention can be used, as its applications, for electrophoretic display devices using the sheets, and electronic equipments using the electrophoretic display devices.

Abstract: The preservation method of microcapsules for electrophoretic display devices according to the present invention includes preserving microcapsules for electrophoretic display devices in a water-based medium having an electric conductivity of 500 ?S/cm or lower. The preservation under such conditions makes it possible to preserve microcapsules for electrophoretic display devices over a long period of time without deteriorating their electrophoretic properties. The microcapsules for electrophoretic display devices, which have been preserved by the preservation method of the present invention, can be used, as its applications, for sheets for electrophoretic display devices and electrophoretic display devices using the sheets.

Abstract: An object of the present invention is to provide a metal oxide particle which exercises more excellent ultraviolet absorbency as a matter of course and combines therewith merits of, for example, either being shifted in ultraviolet absorption edge toward the longer wavelength side and being excellent also in the absorption efficiency of a long-wavelength range of ultraviolet rays, or having good transparency and, for example, even in cases where added into or coated onto substrates, not damaging the transparency or hue of the substrates.

Abstract: The present invention provides: a fine particles-dispersed composition that has extremely good dispersibility even if a polyamidic acid is contained in the composition; and a production process for such a composition. The polyamidic acid-containing and fine particles-dispersed composition comprises fine particles and a polar solvent solution, wherein the fine particles are dispersed in the polar solvent solution using an organic polymer as a dispersant, and this composition further comprises a polyamidic acid.

Abstract: A process for preparing an aqueous resin dispersion includes the steps of copolymerizing a polymeric monomer whose ratio of (meth) acrolein to a total amount of the (meth) acrolein and a vinyl monomer is in the range from 10 weight % to 80 weight % in an organic solvent to obtain a copolymer solution, dispersing the obtained copolymer solution in an aqueous medium and removing an unreacted (meth) acrolein. Since the above process can extremely reduce contents of the unreacted (meth) acrolein and of an oligomer whose number-average molecular weight is less than 1000, an aqueous resin dispersion where problems of a pungent smell, toxicological properties, etc. due to the (meth) acrolein and the oligomer are eliminated can be provided.