Abstract: A composite material is constituted by fine nano-oxide particles, a dispersant, and a transparent resin material. The dispersant includes a polymer of vinyl monomer having a binding acidic group. When ? is a dimensionless number defined by an average particle size (nm) of the fine nano-oxide particles divided by nm, the polymer has a degree of polymerization of an integer of 3 or more and 8×? or less with the proviso that the integer is a numerical value obtained by dropping a decimal fraction. The composite material is produced through a step of obtaining a dispersant comprising a polymer by polymerizing a vinyl monomer having a binding acidic group in the presence of polyamine or in an aqueous dilute dispersion, and a step of mixing the dispersant, fine nano-oxide particles, and a transparent resin material.

Abstract: High friction and radar attenuating coating formulations are provided and include a resin matrix, a particulate friction additive dispersed in the resin matrix in an amount sufficient to achieve a minimum coefficient of friction according to MIL-PRF-24667B(SH), and a particulate dielectric filler dispersed in the resin matrix in an amount sufficient to achieve a permitivitty (??) of less than about 10 and a loss tangent (tan ?) of less than about 0.05. A substrate surface may be coated with the coating formulation so as to provide a topcoat layer thereon. The topcoat layer may thus be applied directly onto the substrate surface. Alternatively, the coating formulation is present as a topcoat layer component of a coating system on the substrate which further comprises an intermediate layer interposed between the topcoat layer and a surface of the substrate and/or a primer layer coated directly onto the surface of a substrate between the topcoat layer and the substrate.

Abstract: The present invention relates to a colloidal metal solution comprising colloidal metal particles with a sulfur compound of low molecular weight such as mercaptoacetic acid, mercaptopropionic acid, mercaptoethanol, etc. as a protective colloid on the particle surfaces and having a pH of 8-14. According to the present invention, a colloidal metal solution having a high concentration and a distinguished dispersion stability with a small amount of the protective colloid can be provided with a commercially and economically high advantage without any operation such as centrifuge, etc.

Abstract: There is provided an electromagnetic (EM) shielding composite and its method of manufacture having low observability and a low loading level, e.g., 1.5 weight percent, of nanotubes mixed in a base host polymer, wherein the EM shielding composite is an effective shield and absorber for broadband plane wave EM radiation. The loading levels of nanotubes are sufficiently low to leave the mechanical properties of the base polymers essentially unchanged, making this approach widely applicable to a broad range of applications.

Abstract: The invention relates to a photosensitive dispersion with adjustable viscosity for metal deposition on an insulating substrate, which combines the following: a pigment providing oxidation-reduction properties under light irradiation, a metallic salt, a complex-forming agent for the metallic salt, a liquid film-forming polymer formulation, a basic compound, an organic solvent and water. The invention also relates to the use of said dispersion.

Abstract: An electromagnetic wave absorbing heat conductive composition is used to form an electromagnetic wave absorbing heat dissipating article that is placed between a heat generating electronic component which, when operated, generates heat, reaches a temperature higher than room temperature and acts as an electromagnetic wave generating source, and a heat dissipating component. The composition is non-fluid at room temperature prior to operation of the electronic component, but acquires a low viscosity, softens or melts under heat generation during operation of the electronic component, to fluidize at least a surface of the composition so that the composition substantially fills any gaps between the electronic component and the heat-dissipating component.

Abstract: An electromagnetic wave absorber is formed by injection-molding a thermoplastic resin blended with approximately 20-60% by volume of soft magnetic material powder, and blended with a molding assistant and a kneading assistant. The electromagnetic wave absorber includes a unit cell having a bore extending from a top face to a bottom face. A portion of the bore located more adjacently to the bottom face than to the top face has a smaller cross-sectional area than the bore at the top face, and a height of the unit cell from the bottom face to the top face is approximately at least 1.2 times and approximately at most 10 times as large as the maximum width of the bore at the top face of the unit cell.

Abstract: The present invention provides a mixture containing a) at least 26 wt. % of gadolinium and b) one or more elements, alloys and/or compounds from the group consisting of barium, indium, tin, lanthanum, molybdenum, niobium, tantalum, zirconium and tungsten, a process for the preparation of this mixture, use of the mixture as radiation protection, use of the mixture to prepare polymeric radiation protection substances, a process for preparing radiation screening rubbers, thermoplastic materials and polyurethanes, a process for preparing products from the polymeric radiation protection substances and products made from these polymeric radiation protection substances.

Abstract: The present invention provides a mixture containing a) at least 26 wt. % of gadolinium and b) one or more elements, alloys and/or compounds from the group consisting of barium, indium, tin, lanthanum, molybdenum, niobium, tantalum, zirconium and tungsten, a process for the preparation of this mixture, use of the mixture as radiation protection, use of the mixture to prepare polymeric radiation protection substances, a process for preparing radiation screening rubbers, thermoplastic materials and polyurethanes, a process for preparing products from the polymeric radiation protection substances and products made from these polymeric radiation protection substances.

Abstract: The present invention provides radioprotective materials and products produced using the materials, the materials and products being easily usable for blocking the effects of radiation, exposure to which occurs unconsciously in daily life or in the working environment. Specifically stated, the present invention provides radioprotective materials comprising at least one member selected from the group consisting of collagens, keratins, silk fibroins and their derivatives. The present invention also provides radioprotective products produced using the radioprotective materials.

Abstract: Methods for preparing low resistivity nanocomposite layers that simultaneously offer optical clarity, wear resistance and superior functional performance. Nanofillers and a substance having a polymer are mixed. Both low-loaded and highly-loaded nanocomposites are included. Nanoscale coated and un-coated fillers may be used. Nanocomposite films may be coated on substrates.

Abstract: Methods for preparing optical filter nanocomposites from nanopowders. Both low-loaded and highly-loaded nanocomposites are included. Nanoscale coated and un-coated fillers may be used. Nanocomposite filter layers may be prepared on substrates. Gradient nanocomposites for filters are discussed.

Abstract: Calibration devices for optical scanners and methods for their use are provided. The subject devices are characterized by having a polymeric coating with at least one fluorescent agent, where the devices have minimal local and global nonuniformities. The subject device may also include one or more photobleached regions. In using the subject devices, a surface is illuminated with at least one light source, fluorescence data is obtained from the surface and the optical system is calibrated based upon the obtained fluorescence data. The subject invention finds use in a variety of optical scanners, including biopolymeric array optical scanners. Also provided are kits for use in verifying and calibrating optical scanners.

Abstract: A flame-retardant and electromagnetic wave-shielding thermoplastic resin composition is provided, which comprises 100 parts by weight of a thermoplastic resin (A); from 0.5 to 30 parts by weight of a flame retardant of a halogen-free phosphate (B) represented by the following general formula (1): wherein R1, R2, R3, and R4 each independently represent a hydrogen atom or a monovalent organic group, at least one of R1, R2, R3, and R4 is a monovalent organic group, X is a bivalent organic group, k, l, m, and n are each independently 0 or 1, and N is an integer of 0 to 10; from 5 to 35 parts by weight of a metal-coated fiber (C); and from 3 to 30 parts by weight of a filler in a scaly shape or an acicular shape (D). Such a composition has excellent flame retardance, good appearance, and excellent molding flowability.

Abstract: An electromagnetic wave-absorbing composition is obtained by dispersing in a base polymer a magnetic powder coated with electrically insulating inorganic fines and optionally, a heat conductive powder. The composition has a high breakdown voltage, and can be applied to any adequate site within electronic equipment without a need to pay substantial attention to short-circuits.

Abstract: Polyamide resin compositions suitable for molded articles comprising polyamide, thermoplastic polyphenol, and of carbon fiber are disclosed. These may optionally include aramid fiber and zinc oxide whisker. Such compositions show remarkable shielding performance when subjected to electromagnetic fields, and with outstanding control of warpage and toughness.

Abstract: A high specific-gravity EPDM composition consisting of a mixture of EPDM containing diene at less than 4.5 wt % and ethylene at not less than 58 wt % nor more than 80 wt % and having a Mooney viscosity ML1+4 not less than 50 nor more than 170 at 125° C. and a powdery material, containing powder whose specific gravity is not less than 12 as a main component thereof, added to the EPDM at not less than 80 wt % nor more than 97.5 wt % of a whole amount of the high specific-gravity EPDM composition.

Abstract: Anti-reflective coating materials for deep ultraviolet photolithography include one or more organic dyes incorporated into spin-on-glass materials. Suitable dyes are strongly absorbing over wavelength ranges around wavelengths such as 248 nm and 193 nm that may be used in photolithography. A method of making dyed spin-on-glass materials includes combining one or more organic dyes with alkoxysilane reactants during synthesis of the spin-on-glass materials.

Abstract: Anti-reflective coating materials for deep ultraviolet photolithography include one or more organic light-absorbing compounds incorporated into spin-on-glass materials. Suitable absorbing compounds are strongly absorbing over wavelength ranges around wavelengths such as 365 nm, 248 nm, and 193 nm that may be used in photolithography. A method of making absorbing spin-on-glass materials includes combining one or more organic absorbing compounds with alkoxysilane or halosilane reactants during synthesis of the spin-on-glass materials.

Abstract: A nanocomposite structure comprising a nanostructured filler or carrier intimately mixed with a matrix, and methods of making such a structure. The nanostructured filler has a domain size sufficiently small to alter an electrical, magnetic, optical, electrochemical, chemical, thermal, biomedical, or tribological property of either filler or composite by at least 20%.

Abstract: A conductive paste based on an elastomer of the polyoxypolyolefin type or on a member of the polyolefin family is described, provided with an admixture of conductive particles for the production, in the electronics industry, of a sealing element, of a contact element or of a heat-conduction element. This material is particularly suitable for the production of EMI-RFI gaskets, and, compared with materials known hitherto and based on silicone, has improved performance characteristics and environmental properties.

Abstract: An electromagnetic wave absorber for use in the high frequency range above 1 Ghz and a composite member are characterized by the fact that magnetic metal grains are covered with ceramic above 20 volume %. Further, a method of manufacturing the electromagnetic absorber and the composite member is characterized by the fact that composite magnetic particles, in which a plurality of magnetic metal grains and ceramic are unified, are formed through a mechanical alloying method applied to a composite powder composed of magnetic metal powder and ceramic powder. The electromagnetic wave absorber can be used in a semiconductor device, an optical sending module, an optical receiving module, an optical sending and receiving module, an automatic tollgate in which erroneous operation due to electromagnetic wave disturbance is provided by use of the electromagnetic wave absorber.

Abstract: Laminates are disclosed having interlayers containing an infrared absorbing amount of lanthanum hexaboride (LaB6) coated on or dispersed in a thermoplastic polymeric matrix. Preferably, the LaB6 is combined with other materials, such as indium tin oxide, antimony tin oxide, organic dyes or pigments in a polymeric matrix of polyvinyl butyral (PVB). Alternatively, LaB6 is coated on a sheet of polyethylene terephthalate and encapsulated with one or more sheets of PVB. The interlayers having LaB6 dispersed therein or coated thereon are advantageously combined with encapsulation layers, reflective layers, dyed layers and/or pigmented layers.

Abstract: A thermal conductive material is obtained by kneading an organic material, having the melting transition in the range of 30-70° C. and the viscosity at 100° C. equal to or above 70,000 cP, and a filler at the ratio of 100:40-900. It has a property of flexibly changing its form by being plasticized due to liquidation of the composing organic material upon receipt of heat from an electronic component. Accordingly, adhesion of the thermal conductive material toward the electronic component and a heat sink is increased and thermal conductivity is improved. Additionally, since the thermal conductive material changes its form according to the outer shape of the electronic component, load is evenly applied to the whole electronic component and does not concentrate on part of the electronic component.

Abstract: A method for making a radiation absorbing material (RAM) coating may include providing an iron-silicon alloy powder, forming the iron-silicon alloy powder into flakes, and passivating the flakes. The method may further include selecting passivated flakes having a desired size, and combining the selected passivated flakes with a carrier to provide the RAM coating. The coating may be applied to a substrate to impart the radiation absorbing property thereto.

Abstract: A polymer-chain-grafted carbon nanocapsule. The polymer-chain-grafted carbon nanocapsule includes a carbon nanocapsule and at least one kind of polymer chain grafted thereon, forming a polymer-chain-grafted carbon nanocapsule in which the carbon nanocapsule is the core thereof. The polymer-chain-grafted carbon nanocapsules have the following formula: F(−P)m, in which F is the carbon nanocapsule, P is the polymer chain, and m is the number of the polymer chain. By grafting high-purity carbon nanocapsules with polymer chains, the application thereof is expanded.

Abstract: Anti-reflective coating materials for ultraviolet photolithography include at least one organic light-absorbing compound incorporated into spin-on-glass materials. Suitable absorbing compounds are strongly absorbing over wavelength ranges around wavelengths such as 365 nm, 248 nm, 193 nm and 157 nm that may be used in photolithography. A method of making absorbing spin-on-glass materials includes combining at least one organic absorbing compound with alkoxysilane or halosilane reactants during synthesis of the spin-on-glass materials.

Abstract: There is disclosed a composition which is layered in a reflective board to constitute a radio wave absorber. In this composition, an electroconductive titanium oxide is compounded with a substrate. With regard to the substrate, there may be used thermoplastic resin, thermosetting resin, rubber or elastomer.

Abstract: Calibration devices for optical scanners and methods for their use are provided. The subject devices are characterized by having a polymeric coating with at least one fluorescent agent, where the devices have minimal local and global nonuniformities. The subject device may also include one or more photobleached regions. In using the subject devices, a surface is illuminated with at least one light source, fluorescence data is obtained from the surface and the optical system is calibrated based upon the obtained fluorescence data. The subject invention finds use in a variety of optical scanners, including biopolymeric array optical scanners. Also provided are kits for use in verifying and calibrating optical scanners.

Abstract: Flame retardant EMI shielding materials with improved retention of shielding properties are disclosed. The shielding materials are provided with a dispersed flame retardant on the surfaces of the internal interstices. Methods of making the flame retardant shielding materials are also disclosed.

Abstract: The invention relates to a thermosetting resin composition including a radically curable resin mixture of: a) 50-100 parts by weight of a radically curable resin that also contains a free monomer capable of copolymerising with it; b) 0-50 parts by weight of a shrink-resistant compound that can also contain an amount of copolymerisable free monomer, the total of (a) and (b) adding up to 100, and 2D-randomly distributed, discontinuous carbon fibres obtained by chopping split, continuous carbon fibre bundles to form packages of carbon filaments, which carbon bundles are provided with a sizing that is at least partially chemically bonded thereto, and with a binder whose solubility at room temperature in the copolymerisable free monomer present in the radically curable resin mixture amounts to at least 10% by weight, the weight percentage of carbon fibres relative to the resin composition being between 5 and 65% by weight, and optionally a filler also being present.

Abstract: A tungsten-precursor composite having a polymer matrix and a tungsten precursor therein. The tungsten precursor may be tungsten oxide, ammonium paratungstate, ammonium metatungstate or other precursor or combination of tungsten precursors. The polymer may be any of a very wide range of materials or combinations thereof. Binder, secondary fillers or other third components may be added. By means of use of various tungsten precursors, polymers, and third components, the physical, radiological and electrical properties of the finished products may be tailored to achieve desired properties. In addition, the invention teaches that radiation shielding, insulators, and combined radiation shield/insulators may be fashioned from the composite. A wide range of production methods may be employed, including but not limited to liquid resin casting.

Abstract: Plasticized polyvinyl butyral sheet containing dispersed therein, an infrared-absorbing effective amount of at least one quaterrylenetetracarboxylic diimide infrared-absorbing additive of formula I in the specification. A glass laminate having visible light transmitting and infrared light absorbing properties contains such sheet sandwiched between glass layers.

Abstract: An electromagnetic wave absorbing heat conductive composition is used to form an electromagnetic wave absorbing heat dissipating article that is placed between a heat generating electronic component which, when operated, generates heat, reaches a temperature higher than room temperature and acts as an electromagnetic wave generating source, and a heat dissipating component. The composition is non-fluid at room temperature prior to operation of the electronic component, but acquires a low viscosity, softens or melts under heat generation during operation of the electronic component, to fluidize at least a surface of the composition so that the composition substantially fills any gaps between the electronic component and the heat-dissipating component.

Abstract: A method and apparatus for initiating a rapid and long-lasting pH change to a pH dependent polymer or other pH driven reactant is provided by a pH jump molecule in solution. Visible light is used to excite the pH jump molecule. The attendant pH change occurs rapidly (in nanoseconds) and can be maintained by continuous wave light or by an appropriately pulsed light. Heat resulting from the light activation is efficiently discharged by radiative decay through room temperature phosphorescence lifetimes existing on the order of milliseconds.

Abstract: Polyamide resin compositions suitable for molded articles comprising polyamide, thermoplastic polyphenol, and of carbon fiber are disclosed. These may optionally include aramid fiber and zinc oxide whisker. Such compositions show remarkable shielding performance when subjected to electromagnetic fields, and with outstanding control of warpage and toughness.

Abstract: The invention provides a composition and method for obtaining both light and dark laser marks of varying shades and intensities on a single plastic article by selectively controlling laser parameters. The invention further provides compositions and methods for obtaining pre-selected one-color and multi-colored designs on plastic articles, by selectively controlling material formulations and laser parameter settings.

Abstract: The present invention relates to a colloidal metal solution comprising colloidal metal particles with a sulfur compound of low molecular weight such as mercaptoacetic acid, mercaptopropionic acid, mercaptoethanol, etc. as a protective colloid on the particle surfaces and having a pH of 8-14. According to the present invention, a colloidal metal solution having a high concentration and a distinguished dispersion stability with a small amount of the protective colloid can be provided with a commercially and economically high advantage without any operation such as centrifuge, etc.

Abstract: A radio wave absorber-assembling member comprises an incombustible base material enabled to assemble a desired-shape structure, and radio wave-absorbent incombustible materials fixed to predetermined regions of the base material. The base material is folded at regions to which no incombustible material is fixed. Then, end portions of the base material are bonded to each other so that a radio wave absorber is obtained.

Abstract: The present invention relates to the use of water soluble melanin in solid plastic films of polyvinyl alcohol to be used in conjunction with other plastics to make laminated sheets or lenses. Such laminates will be used as filters to protect against photochemical damage from electromagnetic radiation.

Abstract: A radiation shielding material is manufactured from an elastomer that is blended with a radiation-absorbing filler material. The filler material comprises a powder of a metal with a high atomic member, or compounds thereof. The filler material is represented by more than 80 percent weight and has a grain size distribution in the range of 20 &mgr;m to 120 &mgr;m. The filler material is mixed with a loading material in powdered form. That mixture is kneaded with the elastomer within a mixer while the temperature is maintained below 180° C. The kneaded mixture is cooled and then cut into strips. The strips are passed through a strainer having a mesh width of between 5 &mgr;m and 1000 &mgr;m. The strained strips are then formed into a foil.

Abstract: The present invention relates to laser-markable plastics, in particular thermoplastic polyurethanes, which are distinguished by the fact that they contain pigments having a coating of doped tin dioxide.

Abstract: Anti-reflective coating materials for deep ultraviolet photolithography include one or more organic light-absorbing compounds incorporated into spin-on-glass materials. Suitable absorbing compounds are strongly absorbing over wavelength ranges around wavelengths such as 365 nm, 248 nm, and 193 nm that may be used in photolithography. A method of making absorbing spin-on-glass materials includes combining one or more organic absorbing compounds with alkoxysilane or halosilane reactants during synthesis of the spin-on-glass materials.

Abstract: A method for making a radiation absorbing material (RAM) coating may include providing an iron-silicon alloy powder, forming the iron-silicon alloy powder into flakes, and passivating the flakes. The method may further include selecting passivated flakes having a desired size, and combining the selected passivated flakes with a carrier to provide the RAM coating. The coating may be applied to a substrate to impart the radiation absorbing property thereto.

Abstract: A thermally conductive and electromagnetic interference and radio frequency reflective polymer composition and a method for creating the same is disclosed. Thermally conductive filler material is coated with a thermally conductive and electromagnetic interference and radio frequency reflective coating material and mixed with a base polymer matrix. The mixture is molded into the desired shape. The electromagnetic interference and radio frequency reflective coating material prevents the absorption and transfer of EMI and RF waves through the filler material thus resulting in an EMI and RF reflective composition.

Abstract: A radio wave absorbent capable of absorbing radiowaves in the space saving and efficient manner and capable of coping with up to high frequency bands, as well as a manufacturing method thereof are provided. In a radio wave absorbent in which magnetic particles comprising a soft magnetic metal material are mixed with a matrix of a polymeric material or ceramics, the magnetic particles are formed into elliptic plate particles.

Abstract: An electromagnetic wave suppressor sheet formed into a sheet-like shape out of a material made of synthetic resin in which powder of conjugated magnetic particles surface-treated with an insulating inorganic material has been dispersed.

Abstract: Disclosed are electrically conductive microgel and preparation thereof. The electrically conductive microgel is prepared by adding 3 to 30 weight % of a monomer for synthesizing electrically conductive polymer and 1 to 20 weight % of a dopant to 15 to 80 weight % of an organic solution containing 5 to 60 weight % of microgel particles and polymerizing said monomer at a temperature of 0 to 80 ° C. under the addition of 2 to 40 weight % of an aqueous solution containing 1 to 40 weight % of an oxidative polymerization catalyst, in which the polymer adsorbed on the surface of the microgel particles. The electrically conductive microgel takes a core/shell structure in which electrically conductive polymers or oligomers are physically adsorbed onto the internal crosslinked microgel particles.

Abstract: There is provided an electromagnetic (EM) shielding composite and its method of manufacture having low observability and a low loading level, e.g., 1.5 weight percent, of nanotubes mixed in a base host polymer, wherein the EM shielding composite is an effective shield and absorber for broadband plane wave EM radiation. The loading levels of nanotubes are sufficiently low to leave the mechanical properties of the base polymers essentially unchanged, making this approach widely applicable to a broad range of applications.

Abstract: Disclosed is an electromagnetic wave-shielding coating material which is superior in both paintability and a electromagnetic wave shielding activity. Also, the coating material is of antistatic activity. The coating material comprises polyaniline (ES) with a solid content of 1-50%, a matrix polymer with a solid content of 1-50%, and additives at a predetermined amount. Also disclosed is an electromagnetic wave-shielding coating material, which is prepared by mixing polyaniline (ES, 100%), an acrylic resin and additives at predetermined amounts and adding the mixture with a hardener and a mixed solvent at predetermined amounts just before use. The electromagnetic-shielding coating material is able to effectively shield electromagnetic waves with a broad band of frequencies and be coated onto cases of various electromagnetic apparatuses, thereby protecting the body from electromagnetic wave pollutions.