Abstract: A one-component system polyurethane gel and a coupler for ultrasonic diagnostic probes comprising the same are disclosed. The gel is obtained by reacting a polyol having a room temperature liquid alkylene oxide chain and/or a polyurethane polyol prepolymer having a room temperature liquid alkylene oxide chain with a polyurethane polyisocyanate prepolymer having a room temperature liquid alkylene oxide chain. The gel causes no bleeding or evaporation of a dispersion medium and is therefore excellent in safety to the human body and preservation stability.
Abstract: Functional films comprising a thermoplastic resin having formed thereon a coating layer and a process for their production are disclosed. The films have improved properties including improved heat resistance, are inexpensive, and are for general-purpose. They are produced by baking a thin film of a phenol resin, an epoxy resin, a silicone resin, etc., onto a thermoplastic resin substrate and can be utilized for flexible printed circuit base, insulating tapes, etc.
Abstract: An ionic conductive polymeric sticking agent comprising: (a) a reaction product of (i) a polyurethanepolyol prepolymer having an alkylene oxide chain and/or a polyol having an alkylene oxide and (ii) a polyurethane polyisocyanate prepolymer having an alkylene oxide chain, and (b) an ionic compound.
Abstract: This invention relates to a chlorine-containing resin molding characterized by its stabilization by aminocarboxylic acid and from which molding substantially no metallic ion is detected, and to material for use with the chlorine-containing resin molding consisting of 100 parts by weight of chlorine-containing resin and 0.5-5.0 parts by weight of aminocarbolyxic acid. According to the molding and the material for use therewith, there is no possibility of metallic ion dissolving from the molding in which a metallic stabilizer is conventionally used, with the result that the molding finds wide application in the industrial field related with electric parts including a semiconductor as a main item, medical treatment, chemicals and pharmaceuticals, and food stuffs, all subject to adverse effects by dissolution of metallic ion. Consideration for application of a nonmetallic agent is also given to the use of a coloring agent and a lubricant with respect to the molding and the material for use therewith.
Abstract: The present invention provides multiblock hydrophilicity-hydrophobicity tapered amphiphilic segment polyurethanes represented by the following general formula (A): ##STR1## wherein (S) is (a) a polyalkylene oxide segment represented by the following general formula (I):--R.sub.1 --O--R.sub.1 --O).sub.
Abstract: An apparatus for molding a sleeve on a corrugated pipe having an inner wall and fusion-bond ridges. Two clamps can close to engage several of the ridges. One to three of the ridges project into a molding space between the clamps. A core is inserted into the pipe and closes the molding space. Hot pressurized resin softens and collapses the projected ridges and fusion bonds the pipe to the sleeve portion of the molding space.
Abstract: A method of molding a sleeve on a corrugated pipe consisting of an inner wall and fusion-bond ridges. Two clamps can close to engage several of the ridges. One to three of the ridges project into a molding space between the clamps. A core is inserted into pipe and closes the molding space. Hot pressurized resin softens and collapses the projected ridges and fusion bonds the pipe to the sleeve portion of the molding space.
Abstract: A dot matrix type luminous display in which flaws such as strains are substantially eliminated during the manufacturing process. A display board bearing light-emitting elements is covered by a flexible member having through-holes formed at locations corresponding to the light-emitting elements. These through-holes, which are filled with a heat-resistant, translucent resin, are offset from through-holes formed in the display board, which are used to provide electrical connections to the light-emitting elements.
Abstract: A plastic underdrainage tube of generally reticular configuration formed by integrally extruding a plastic material is disclosed. The tube is basically composed of axially spaced apart annular bands having relatively greater thicknesses to reinforce or impart to the tube a high stability against surrounding pressures, and circumferentially disposed longitudinal strands in thicknesses less than those of said annular bands. These longitudinal strands are closely spaced apart along the circumference of the tube to form drainage openings between the circumferentially adjacent strands, the openings being disposed across the entire periphery and lengthwise of the tube to allow the water inflow over the entire wall portion thereof.
Abstract: A flocked foam having an embossed pattern provided by a high-frequency welder is disclosed. The foam comprises a partially cross-linked foam substrate (10 to 75% gel fraction in boiling toluene for 15 hours) formed from a 1,2-polybutadiene resin or a polymer blend including a 1,2-polybutadiene resin as one component thereof, and modacrylic pile fibers or a mixture thereof with other pile fibers flocked on the surface of the foam substrate.
Abstract: A process for manufacturing a sheet having a chip-like design composed of a plurality of chips densely aligned in a plane without overlapping and a solidified binder uniformly filling the interstices among the chips and firmly and integrally bonding the chips to one another in sheet form. The sheet is useful as a floor material, wall material, and the like.
Abstract: A process for producing a photodegradable rubber foamed products of excellent softness, which comprises mixing 1,2-polybutadiene with 0.1 to 3.0% of a photosensitizer and with a thermally decomposable foaming agent, irradiating with ultraviolet ray of a wavelength of 240 to 400 m.mu. for 10 minutes or less to form a cross-linked material having a gel fraction of 30 to 80% (in boiling toluene; 7 hours), and heating to 150 to 230.degree. C. to form a foamed product. In particularly preferred embodiments of this invention, the foaming agent is p,p'-oxybis (benzenesulfonylhydrazide).
Abstract: A process for producing an open cell foam by irradiating a composition comprising (a) a thermoplastic resin polymer blend including 1,2-polybutadiene as one component, (b) a photosensitizing agent and (c) a thermally decomposable foaming agent, with ultraviolet light having a wavelength ranging from about 254 to about 400 m.mu. to thereby cross-link mainly the 1,2-polybutadiene, and subsequently foaming the composition at a temperature higher than the softening point of the 1,2-polybutadiene and that of the thermoplastic resin polymer blended therewith and higher than the decomposition temperature of the foaming agent.
Abstract: A method and apparatus for producing synthetic resin sheets having geometric decorative patterns extending through the thickness of the sheet as a substantially identical pattern image corresponding to the image portions of the exposed surfaces thereof, wherein differently colored resin particles are selectively introduced into individual pattern spaces which are confined by enclosing members on a support to provide a regular pattern of differently colored resin particle masses over the surface of the support in a regular pattern, the differently colored resin particle masses are then converted into a pre-formed sheet on the support, the regular color pattern still being retained, and the resulting assembly then being heated at a temperature sufficient to cause fusion or sintering together of the masses of differently colored resin particles comprising the sheet, wherein the original differently colored resin particle masses exist as a repeating pattern of differently colored areas which extend through the th
Abstract: A plurality of elongated, thin wall, light weight synthetic resin, relatively fragile tubular golf club protector bodies are detachably interlinked by protector caps whose cylindrical bodies are composed of spaced coaxial cylindrical inner and outer walls closed at one end and defining an annular space between the walls of a radial dimension slightly less than the wall thickness of the golf club protector bodies, the cap bodies being forcibly pressed onto one end of the golf club protector bodies to mechanically reinforce the ends of the golf club protectors through which the golf club shafts are inserted and removed. Each cap body includes circumferentially spaced integral joint parts which are linked together either by an integral or separate joint member.