Abstract: The present invention relates to a water-soluble solid composition that produces a lubricating liquid when dissolved in water. The composition is preferably prepared by kneading particles of a solid, such as sodium polyacrylate, with water and one or more optional additives to form a mixture. This kneaded mixture is then molded or otherwise formed into a desired shape, preferably one that is easily held such as a lump, sphere, or rod. The shaped composition may also be provided with a partial cover of a water-insoluble material or other modified surface so that it may be held more securely. In use a dry portion of the solid composition can be held in the hand and applied to an area of moistened skin to apply a lubricating liquid without also applying the lubricating liquid to the hand. Similarly, a portion of the solid composition may be moistened and then rubbed on dry skin to apply a lubricating liquid to the skin.

Abstract: The present invention relates to a water-soluble solid composition that produces a lubricating liquid when dissolved in water. The composition is preferably prepared by kneading particles of a solid, such as sodium polyacrylate, with water and one or more optional additives to form a mixture. This kneaded mixture is then molded or otherwise formed into a desired shape, preferably one that is easily held such as a lump, sphere, or rod. The shaped composition may also be provided with a partial cover of a water-insoluble material or other modified surface so that it may be held more securely. In use a dry portion of the solid composition can be held in the hand and applied to an area of moistened skin to apply a lubricating liquid without also applying the lubricating liquid to the hand. Similarly, a portion of the solid composition may be moistened and then rubbed on dry skin to apply a lubricating liquid to the skin.

Abstract: An object of the invention is to provide a solid state laser device design so as to improve a cooling effect in said laser device; whereby an electric power to be applied to an excitation lamp can be increased, a large oscillation power can be obtained, and a thermal lens effect generated in the laser medium can be suppressed. The solid-state laser device includes a laser medium, an excitation lamp for applying excitation light to the laser medium, a transparent first cooling pipe accommodating the laser medium, a transparent second cooling pipe accommodating the excitation lamp, wherein a first cooling system which feeds a cooling water to the first cooling pipe and a second cooling system which feeds a cooling water to the second cooling pipe are independent of each other and the respective systems have a water-feeding pump. The cooling pipes are formed of cerium-doped quartz glass capable of inhibiting transmission of light having a wavelength not longer than 320 nm.

Abstract: A diffusion reflector is formed of mica ceramics or fluorine plastics containing barium sulfate, on the surface of which gold or silver is vapor deposited to enhance a diffusion reflectance. A reflective cylinder is formed from said diffusion reflector, and laser rods and lamps are arranged in an internal space of the reflective cylinder to form a solid laser device. Thereby, light can be diffused without focussing light within the reflective cylinder, and the laser rods can be uniformly excited.

Abstract: A laser output unit according to the present invention comprises a body having a laser output port at an extreme and thereof, lenses provided within said body to condense laser beam introduced to emit it from the laser output port, and a protective glass provided between said laser output port and said lens within said body. A gas jet port and a gas exhaust port opposed to said gas jet port are provided at said body portion between said protective glass and said laser output port. A gas crosses at a position between the protective glass and the laser output port. Flying matter is blown away by the gas and does not arrive at the protective glass.

Abstract: According to the present invention there are provided a solid-state laser device using a laser rod not smaller than 180 mm in length as a laser medium, thereby capable of providing a high output power, facilitating maintenance and inspection, and permitting the reduction of size and simplification in comparison with a conventional laser device using plural laser rods, as well as a machining apparatus using the said laser device as a machining energy source, and a solid-state laser device wherein a laser medium is held in a free state within a resonator so that a longitudinal direction of the laser medium is coincident with an optical axis direction of laser beam and so that the laser medium is capable of expansion or contraction in the said optical axis direction, thereby preventing the breakage of the laser medium and the deviation of the optical axis of laser beam.

Abstract: A head-positioning mechanism of an endless tape useful in, for example, various tape-recorders of an endless cartridge type is disclosed, in which the endless tape on its inner side between a capstan and a tape guide is provided with an electrically conductive sensor and at its predetermined site is provided with a cut-line, while the endless tape on its inner surface is normally supplied with a faint current for disenergizing a power source of a DC motor upon contact of the cut-line with the sensor, thereby to arrest a head of the endless tape at a starting position.

Abstract: A laminate having excellent flameproofing and low-smoke development is disclosed. The laminate comprises an urethane modified polyisocyanurate foam as a core material and an aluminum foil or sheet as a surface material piled on at least one surface of the foam through a self-adhesion of the foam and passes Grade 2 incombustibility according to Japanese Industrial Standard (JIS) A-1321 combustion test.

Abstract: The flexible polyurethane foams having high flame resistance and smoke resistance can be produced by reacting a polyhydroxyl compound and a polyisocyanate with a urea derivative selected from the group consisting of(a) a compound represented by the general formula ##STR1## wherein at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents hydroxylalkyl, alkoxyalkyl, alkyl and aryl groups and the remainder represents hydrogen atom, and(b) a urea-formaldehyde condensation product in the presence of a catalyst, a surfactant and a blowing agent.These polyurethane foams can easily provide the favorable foam sheets by compression-molding these foams under heating.

Abstract: A process for producing a rigid polyurethane foam having excellent flame retardance and low-smoke development is disclosed. When the rigid polyurethane foam is produced by reacting a polyhydroxyl compound with an organic polyisocyanate in the presence of a blowing agent, a surfactant, a catalyst and other additives, 3-methylpentane-1,3,5-triol is used as a part of the polyhydroxyl compound.

Abstract: Polyisocyanurate foams having excellent heat resistance and flame resistance are produced by using no common organic silicone surfactant or using less than 0.2% by weight based on an organic polyisocyanate, of said organic silicone surfactant, when producing a polyisocyanurate foam by reacting an organic polyisocyanate, a blowing agent and a catalyst for trimerizing isocyanate and if necessary a surfactant, a modifier and the other additives.

Abstract: The present invention relates to a process for the preparation of plastic molded articles having a metal film and exhibiting a metallic luster, said process comprising (a) coating an ultraviolet-curing acrylic resin type undercoating paint on the surface of a plastic molded article and irradiating the molded article with ultraviolet rays to form a base coat layer, (b) forming a metal film layer of chromium or stainless steel on the base coat layer by a sputtering process, and (c) coating on the metal film layer a top coating paint comprising as main components an acryl polyol having an OH value of 10 to 200 and an acid value of 1 to 12 and a non-yellowing polyisocyanate and curing the top coating paint to form a top coat layer.

Abstract: The flexible polyurethane foams having high flame resistance and smoke resistance can be produced by reacting a polyhydroxyl compound and a polyisocyanate with a urea derivative selected from the group consisting of(a) a compound represented by the general formula ##STR1## wherein at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents hydroxylalkyl, alkoxyalkyl, alkyl and aryl groups and the remainder represents hydrogen atom, and(b) a urea-formaldehyde condensation product in the presence of a catalyst, a surfactant and a blowing agent.These polyurethane foams can easily provide the favorable foam sheets by compression-molding these foams under heating.

Abstract: A flame-resistant and smoke-retardant polyurethane foam is produced by reacting a polyisocyanate with a polyhydroxyl compound in the presence of an alkaline earth metal salt of a carboxylic acid and a foaming agent.

Abstract: A flame- and smoke-retarded, non-shrinkable flexible polyurethane foam is prepared by reactingA. a polyol having at least two active hydrogen atoms and a molecular weight of from 1,000 to 10,000,B. a low molecular weight polyhydroxyl compound having a molecular weight of from 60 to 700,C. a polyisocyanate andD. an ammonium compound which generates ammonia gas at a temperature below 100.degree. C,wherein the equivalent weight ratio of (B) to (A) is ranging from 0.5 to 2.0 and the amount of (D) based upon 100 parts by (A) ranges from 0.5 to 10 parts by weight.

Abstract: An excellent flame- and smoke-resistant flexible polyurethane foam is produced by reacting a polyisocyanate with a mixture ofA. polyether polyol containing secondary hydroxyl group of at least 50 mol% of total hydroxyl content and having a number average molecular weight of 3,000-6,000 andB. a low molecular weight polyhydroxyl compound, an equivalent weight ratio of said low molecular weight polyhydroxyl compound (B) to said polyether polyol (A) being 0.5-2.0, if desired, the flame retardancy of the foam may be enhanced by the addition of a small amount of flame retardant.

Abstract: Aldehyde functional polymers having a molecular weight of about 500 to 50,000 and containing aldehyde functional groups at both ends and/or on side chains of the molecule are produced by subjecting some of the double bonds in a high polymer containing olefinically unsaturated double bonds to ozone-decomposition by ozone-containing gas and reducing the ozone-decomposition products by means of a trivalent phosphorus compound as a reducing agent into substantially only aldehyde functional groups.