Abstract: The invention provides an aqueous painting material composition. which provides a coating film such that, after it has dried, it neither runs nor dissolves in water even if waterdrops adhere thereto, and such that it has water resistance in such a degree that, even if an extra layer of a second aqueous painting material composition is added thereon, it is not shifted, like the conventionally known emulsion paints, and further such that, even if it has adhered to a palette or a paintbrush, and dried, it can be readily washed away by washing it with water. The aqueous painting material composition comprises water, a coloring pigment, a water-soluble resin, and a resin emulsion, wherein the aqueous painting material composition contains a hydroxyalkyl cellulose only as the water-soluble resin, and the resin emulsion in an amount of 0.1% by weight or more and less than 5% by weigh in a solid basis.

Abstract: The invention provides a crayon which comprises an alternative plasticizer in place of the conventional phthalate ester plasticizers and yet provides writings excellent in water resistance, the crayon comprising a colorant, a gelling agent, an organic solvent, a resin component, and a plasticizer, wherein the plasticizer is at least one selected from diisononyl adipate, acetyltributyl citrate, 1,2-cyclohexanedicarboxylic acid diisononyl, and alkylsulfonic acid phenyl ester and is contained in an amount of 1 to 20% by weight based on the crayon.

Abstract: The subject invention provides a process for efficiently producing electret coarse powder useful as electrophoretic particles for a large-screen display. The process for producing electret coarse powder comprises irradiating a fluorine-containing resin sheet with an electron beam or a radial ray to convert the fluorine-containing resin sheet into an electret sheet, and pulverizing the electret sheet.

Abstract: An object of the present invention is to provide a process challenge device for a high-pressure steam sterilizer capable of reuse with little trouble. A process challenge device 1 for a high-pressure steam sterilizer, includes a plurality of stacked steam permeable bodies 7, 8, and 9 formed by a material capable of permeating of steam 11 and an indicator 10. The steam permeable bodies 8 (except the steam permeable bodies 7 and 9 arranged at both sides among the stacked steam permeable bodies 7, 8, and 9) each have an opening 8a for accommodating the indicator 10. The steam permeable bodies 7, 8, and 9 are stacked, so that the indicator 10 is surrounded by the inner wall of a cavity 24 formed by the openings 8a of the intermediate steam permeable bodies communicated with one another and the steam permeable bodies 7 and 9 arranged at both sides.

Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component and carbon black having a pH of not less than 5.0 in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.

Abstract: A liquid applicator adapted to prevent an application liquid from leaking or drying with a small biasing force. A tip unit for a liquid applicator of the present invention includes a tubular member and a valve member. The valve member is biased toward a distal end thereof by a biasing member so as to seal a distal opening portion of the tubular member. The distal opening portion includes a first tapered surface and a second tapered surface located at a proximal side of the first tapered surface. The first and the second tapered surfaces are in contact with a tapered area and a ring of the valve member, respectively, so as to seal the distal opening portion.

Abstract: The invention provides a process for producing a crayon having a desired hardness stably without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises: dissolving and dispersing a resin component, carbon black having a pH of less than 5.0 and an organic amine in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating to prepare a raw material solution, pouring the raw material solution into a molding container, and cooling and gelling the raw material solution.

Abstract: The invention provides a discolorable ink composition which is irreversibly erasable by heating to about 40° C. to 120° C. A discolorable ink composition, where an electron-donating color-forming organic compound and an electron-accepting compound are incorporated in wax particles, whereby the electron-donating color-forming compound in a state color-developed by the electron-accepting compound is separated from a decolorizer and kept in the color-developed state, while when the wax is liquefied by heating, the decolorizer reacts with the electron-accepting compound to convert the electron-donating color-forming organic compound into a decolorized state.

Abstract: The invention provides a dual color ink composition which comprises: (a) at least one pigment selected from a pearlescent pigment and a metal powder pigment; (b) water; (c) at least one water-soluble organic solvent selected from alcohols, glycols and glycol ethers, any of which have a branched hydrophobic group; (d) a water-soluble dye; and (e) a modified starch as a water-soluble fixing agent.

Abstract: There is provided a stick-shaped body advancing holder or a combination of a holder and an eraser adapted to advance a stick-shaped body and to ensure chucking of the body or the eraser without enlargement of the entire configuration. A stick-shaped body advancing holder has an outer barrel, an inner barrel, and urging members, the urging members each being of a sawtooth shape and having bent portions. The urging members are arranged in a gap between flat faces of the outer barrel and flat faces of the inner barrel. On a knocking operation, the bent portions are deformed, thereby generating an urging force.

Abstract: In a water-based ink composition of the present invention, 2.5 to 50 wt % of white-colored resin particles and 2.5 to 50 wt % of film-forming resin emulsions in a solid content are contained with respect to the total amount of the ink, the ratio of said white-colored resin particles to film-forming resin emulsions is 1:0.2 to 1:3, and not less than 20 wt % of said white-colored resin particles and film-forming resin emulsions in a solid content are contained in total.

Abstract: The subject invention provides a process for efficiently producing electret coarse powder useful as electrophoretic particles for a large-screen display. The process for producing electret coarse powder comprises irradiating a fluorine-containing resin sheet with an electron beam or a radial ray to convert the fluorine-containing resin sheet into an electret sheet, and pulverizing the electret sheet.

Abstract: A clipping structure includes a main body, a clip member, and an urging member for urging the clip member. The main body has a connecting protrusion, whereas the clip member has two lateral parts, between which the connecting protrusion is arranged. Further, the connecting protrusion has receptacles on its outer surfaces, whereas the lateral parts have shaft projections on its inner surfaces respectively. Fitting of the shaft projections into the respective receptacles connects the clipping member swingably to the main body. The connecting protrusion, where the receptacles are formed, has tapered portions formed on its outer surfaces respectively. Gradual opening of a gap between the lateral parts with distal ends of the shaft projections brought into contact with the respective tapered portions fits the shaft projections in the respective receptacles.

Abstract: An object of the present invention is to provide a material for more easily and accurately detecting treatment status using gas exposure. The present invention relates to an ink composition for detecting an oxidizing gas, or the like, comprising at least one type of azo dye, methine dye, triarylmethane dye and thiazine dye.

Abstract: The invention provides a process for producing a crayon without poor gelation using a benzylidene sorbitol gelling agent together with the use of carbon black as a black pigment. The process comprises dissolving and dispersing carbon black and a resin component in an organic solvent, dissolving at least one gelling agent selected from the group consisting of dibenzylidene sorbitol, tribenzylidene sorbitol and derivatives thereof in the resultant under heating, pouring the obtained raw material solution into a molding container, and then cooling and solidifying the solution, wherein carbon black having an average particle diameter of primary particles of 20 to 100 nm is used as the carbon black.

Abstract: A stamp marker capable of adhering an application liquid to a target. The stamp marker includes a liquid-permeating member and a container containing an application liquid, the liquid-permeating member including a distal member, a base, and a fixing member. The distal member has a surface having a contacting part and a noncontacting part, the contacting part having a shape, so as to copy the shape onto the target by bringing the surface of the distal member into contact with the target to make the liquid adhere to the target, so that an adhesion mark of a predetermined shape is formed on the target.

Abstract: A tip unit (1) incorporated in a liquid applicator such as a ball-point pen, the tip unit being capable of an increased rate of liquid discharge with no leaking or clogging problem. To achieve it, the tip unit (1) is accommodated in a tip body (11) having a ball housing (15), a ball (10), a capillary hole (16), and a proximal bore, the ball housing (15) being a passage for allowing liquid to flow therethrough, the ball (10) being rotatively held in the ball housing (15). The ball housing (15) is provided with at least one ink channel (47) adapted to communicate the ball housing (15) with the capillary hole (16) or the proximal bore. The ball housing (15) has a ball resting seat (45) and a side wall (41) that are connected by a connecting surface (71) having a shape of a truncated conical surface with its apex toward the distal end of the tip unit (1).

Abstract: The ink backflow preventive of the present invention contains at least refractory and/or involatile organic liquid substances and gelling agents, wherein the oil separation degree under the specific condition is prepared to be 1 to 15 %, in which as at least said gelling agents, styrene-based thermoplastic elastomer is contained and said styrene-based thermoplastic elastomer is composed of two or more of said styrene-based thermoplastic elastomer with the same molecular weight and with the different average molecular weight.