Abstract: Europium-containing fluorescent nanoparticles and methods of preparing such nanoparticles are provided. The nanoparticles are comprised of an aluminum oxide framework having a europium activator, a magnesium, calcium, strontium, or barium energy reservoir, and at least one co-activator selected from the group consisting of scandium, yttrium, and certain lanthanide elements. The nanoparticles may be optionally coated with a silane coating containing reactive functional groups that allow for attachment of the nanoparticle to a desired biological or chemical target molecule. The coated nanoparticles may be used to detect a variety of protein ligand interactions, and may also be used in assays for nucleic acids.

Abstract: The invention provides a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer, wherein the shell contains an organosilicon compound, and a process for producing a thermally foamable microsphere having a structure with a foaming agent encapsulated in a shell formed of a polymer by suspension polymerization of a polymerizable mixture containing at least a foaming agent and a polymerizable monomer in an aqueous dispersion medium, wherein the polymerizable mixture is suspension polymerized in the presence of the organosilicon compound.

Abstract: An improved coated phosphor filler for an optical device includes a plurality of individual phosphor filler particles, and a coating layer having a plastic substance coated on each of the phosphor filler particles.

Abstract: A chromium-free, stable, water dispersion of zinc powder is produced by incorporation, into a zinc powder, of a silane coupling agent having a mercapto group in its molecules. The coupling agent is present in an amount ranging from 0.1 to 10 parts by weight for every 100 parts by weight of the zinc powder. The composition may be used in a water base paint.

Abstract: A magnetic recording medium using black magnetic acicular composite particles produced by forming a single carbon black coat between the surface of magnetic acicular cobalt-coated iron oxide particle or magnetic acicular metal particle and a coating comprising at least one organosilicon compound, in an amount of from more than 10 to 40 parts by weight based on 100 parts by weight of the magnetic acicular particles, exhibits not only a smooth surface, a smaller light transmittance and a lower surface electrical resistivity value, but also a small friction coefficient and an excellent running durability.

Abstract: A method of protecting dyes printed on print media against ozonolysis is provided. The method comprises: (a) providing a first reaction product comprising the reaction of a phenylenediamine or derivative thereof (an anti-ozonant) with a silica or silicate; and (b) reacting the first reaction product in the presence of a water-free solvent with silica groups to form a second reaction product. Also provided is the reaction product resulting from the reaction of (1) the anti-ozonant-silica (or silicate) and (2) silica groups on a substrate. The anti-ozonant-silica (or silicate) is covalently attached to the particles of silica in the media and cannot escape or evaporate away. The use of phenylenediamines as anti-ozonants solves the problem of the fading of dyes on porous media by ozone pollution.

Abstract: A ceramic mass includes one ceramic material and at least a second different ceramic material. Glass material is arranged between the ceramic materials. The glass material reduces the sintering temperature of the ceramic mass and prevents the various ceramic materials from forming a mixed crystal when the ceramic mass is sintered. The ceramic mass is suitable for use in LTCC technology for the production of capacitors whose permittivity is dependent upon a specific temperature range.

Abstract: A surface modified inorganic oxide powder is provided, which includes inorganic oxide particles having a surface modified with a mixed solution, which includes an organopoly-siloxane and a silane compound, in the presence of an acid or a base.

Abstract: Treating compositions for application to particles of a filler consist of 5-95 percent by weight of a silicon atom containing hydrophobic-type treating agent, and 5-95 percent by weight of a silicon atom containing functional-type treating agent, based on the weight of the composition. Useful functional-type treating agents include bis(alkoxysilylalkyl)polysulfides and mercaptoorganosilicon compounds. Useful hydrophobic-type treating agents include polyorganohydrogensiloxanes and silanol terminated silicone oligomers. The filler most preferred is precipitated (i.e., synthetic) calcium carbonate.

Abstract: A gypsum wallboard may have a paper-covered first face with shaped regions formed along side portions near the wallboard edges, and a fibrous mat-covered second face. The fibrous mat material covering the second face extends around the wallboard edges and is overlapped by portions of the paper on the first face. The wallboard can be manufactured by depositing a gypsum slurry onto a moving web of the fibrous mat material, applying a web of the paper to the deposited gypsum slurry, and forming shaped regions in the side portions of the top surface.

Abstract: A silicone rubber composition comprising (A) an organopolysiloxane having at least two aliphatic unsaturated groups, (B) finely divided silica, (C) a metal powder or an electrically conductive metal-plated powder, (D) an adhesive aid, and (E) a curing agent cures into silicone rubber having a low volumetric resistivity and a stable high conductivity, exhibiting improved adhesion to resin and metal substrates, and thus suitable as electrically conductive parts and electrical contacts in electrical equipment.

Abstract: The invention is a polymer resin that includes between about 20 and 200 ppm of an inert particulate additive, preferably selected from the group consisting of surface-modified talc and surface-modified calcium carbonate. The polymer resin is capable of being formed into low-haze, high-clarity bottles and films possessing reduced coefficient of friction.

Abstract: Europium-containing fluorescent nanoparticles and methods of preparing such nanoparticles are provided. The nanoparticles are comprised of an aluminum oxide framework having a europium activator, a magnesium, calcium, strontium, or barium energy reservoir, and at least one co-activator selected from the group consisting of scandium, yttrium, and certain lanthanide elements. The nanoparticles may be optionally coated with a silane coating containing reactive functional groups that allow for attachment of the nanoparticle to a desired biological or chemical target molecule. The coated nanoparticles may be used to detect a variety of protein ligand interactions, and may also be used in assays for nucleic acids.

Abstract: High-temperature resistant polymerizable metal oxide particles having a glass transition temperature of the homopolymerizable ≧100° C. and a core A. The core includes an oxide of a metal or semimetal of the third to sixth main group, of the first to eighth subgroup of the periodic table, or of the lanthanides, and has at least one group —(B)w—X bound via the oxygen atom of the oxide or hydroxide, in which B represents a binding link, and X represents a reactive functional group, and w is equal to 0 or 1. The inventive particles are useful, in particular, for producing coating materials, molding materials and adhesives.

Abstract: A method of preparing a hydrophobic partially aggregated colloidal silica, the method comprising reacting (a) a silica sol comprising at least one hydrophilic partially aggregated colloidal silica with (b) an organosilicon compound selected from (i) at least one organosilane having the formula R1aHbSiX4-a-b, (ii) at least one organocyclosiloxane having the formula (R12SiO)m, (iii) at least one organosiloxane having the formula R13SiO(R1SiO)nSiR13, and (iv) a mixture comprising at least two of (i) (ii), and (iii), in the presence of (c) water (d) an effective amount of a water-miscible organic solvent, and (e) an acid catalyst, to produce the hydrophobic partially aggregated colloidal silica and an aqueous phase, wherein R1 is hydrocarbyl or substituted hydrocarbyl; X is a hydrolysable group; a is 0, 1, 2, or 3; b is 0 or 1; a+b=1, 2, or 3, provided when b=1, a+b=2 or 3; m has an average value of from 3 to 10; and n has an average value of from 0 to 10; and the hydrophobic partia

Abstract: This invention relates to novel fluorinated dendrons and to a universal strategy for producing functional fluorinated dendrons programmed to self-assemble into supramolecular nanocylinder compositions containing p-stacks of high electron or hole mobility donors (D), acceptors (A), or D-A complexes in the core. Such nanocylinder compositions are uniquely applicable to devices spanning from single supramolecule to nanoscopic and to macroscopic scales including transistors, photovoltaics, photoconductors, photorefractives, light emissives, and optoelectronics.

Abstract: A sealing material for sealing the edges on at least one side of a solid polymer fuel cell separator is provided. This sealing material includes (A) an organopolysiloxane with at least two alkenyl groups bonded to silicon atoms within each molecule, (B) an organohydrogenpolysiloxane with at least two hydrogen atoms bonded to silicon atoms within each molecule, (C) a fumed silica with a specific surface area of 50 to 250 m2/g which has undergone surface treatment with at least two different surface treatment agents, and (D) an addition reaction catalyst. This sealing material displays excellent moldability, heat resistance and elasticity, has a compression set within air and within an acidic aqueous solution which can be suppressed to a low value, and produces an excellent seal, particularly in an acidic aqueous solution.

Abstract: Protection products and armored products made of a fiber-reinforced composite material with a ceramic matrix, include a protection element for partial or complete absorption of at least one impact-like load focussed at a point. The protection element has a body having at least one dimension at least equal to 3 cm, in a direction perpendicular to a load to be absorbed. The body includes a fiber-reinforced composite material having a ceramic matrix with at least 10% by weight of silicon carbide and having reinforcing fibers. At least 5% by weight of the reinforcing fibers are carbon fibers and/or graphite fibers.

Abstract: Modified silica fillers are prepared by a method in which silica surfaces are contacted with compositions containing organosilicon compounds. The organosilicon compounds in the compositions are only of types of structural groups of monomeric dichlorosilanes and trialkoxysilanes. The compositions may be (i) mixtures or blends of alkyl and aryl group containing dichlorosilanes and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces, (ii) mixtures or blends of substituted alkyl and substituted aryl group containing dichlorosilanes in which the dichlorosilanes are free of hydrocarbon or organofunctional groups reactive with silica surfaces and trialkoxysilanes free of hydrocarbon or organofunctional groups reactive with silica surfaces, or (iii) substituted and unsubstituted alkyl and aryl group containing dichlorosilanes in which the dichlorosilanes are free of hydrocarbon or organofunctional groups reactive with silica surfaces.

Abstract: A material for chromatographic separations, processes for its preparation, and separation devices containing the chromatographic material. In particular, porous inorganic/organic hybrid materials are provided with a decreased concentration of surface organic groups. These particles may be surface modified and have enhanced stability at low pH.

Abstract: A semiconductor nanocrystal compound is described capable of linking to an affinity molecule. The compound comprises (1) a semiconductor nanocrystal capable of emitting electromagnetic radiation and/or absorbing energy, and/or scattering or diffracting electromagnetic radiation—when excited by an electromagnetic radiation source or a particle beam; and (2) at least one linking agent, having a first portion linked to the semiconductor nanocrystal and a second portion capable of linking to an affinity molecule. The compound is linked to an affinity molecule to form a semiconductor nanocrystal probe capable of bonding with a detectable substance. Subsequent exposure to excitation energy will excite the semiconductor nanocrystal in the probe, causing the emission of electromagnetic radiation.

Abstract: Organosilicon nano/microhybrid systems or microhybrid systems having nanoscale and/or microscale oxide particles (KA—O), and an organosilicon shell with at least one organosilicon constituent of the general formula Ia wherein the organosilicon constituent of the shell B is attached to the oxide particles via one or more covalent linkages of formula Ib A process for preparing a composition comprising organosilicon nano/microhybrid systems or microhybrid systems directly in a synthetic resin composition allows in situ preparation of a curable resin. The compositions may be used as coating materials for producing scratch resistant and abrasion resistant coatings.

Abstract: Printed wiring boards improved in the drilling processability and insulation properties are produced either by treating the surfaces of base materials or inorganic fillers with silicone oligomers having specified structures, particularly, a three-dimensionally crosslinked silicone oligomer, or by using resin varnish prepared by compounding such a silicone oligomer with a resin varnish for impregnation of the base materials, or by dipping the inorganic fillers in a solution of such a silicone oligomer for surface treatment and then directly compounding resin materials with the solution.

Abstract: The present invention provides an organosilicon nanocapsule, which includes: a nanoscale core A, which includes: at least one particle including at least one oxide or mixed oxide, KA—O, of at least one metal or semimetal selected from the group including main groups 2 to 6 of the Periodic Table, transition groups 1 to 8 of the Periodic Table, lanthanides, and mixtures thereof; and an organosilicon shell B, which includes: at least one organosilicon compound having the formula (Ia): (Si′O—)xSi—R  (Ia) wherein R is a linear, branched, cyclic or substituted alkyl group having from 1 to 50 carbon atoms; wherein x is a number from 0 to 20; wherein remaining free valences of Si are each independently (KA—O)—, SiO— or —Z; wherein remaining free valences of Si′ are each independently (KA—O)—, SiO—, —R, or —Z; wherein the Z's are each independently hydroxyl or alkoxy radicals; and wherein each Si and Si′

Abstract: A magnetic recording medium including a non-magnetic base film; and a magnetic recording layer formed on the non-magnetic base film. The magnetic recording layer contains a filler, a binder resin and surface-modified magnetic particles having an average particle diameter of 0.01 to 0.7 &mgr;m and contains magnetic particles and a silane monomer coat formed on surface of the magnetic particle by a dry-mixing method.

Abstract: The disclosed invention relates to a composite material for use in recovery of radionuclides, metals, and halogenated hydrocarbons from aqueous media. The material has very high surface area, and includes nanometer sized, zero-valent iron on a support. The material can be used to remediate aqueous media which have contaminants such as radionuclides, metals and halogenated hydrocarbons from aqueous media.

Abstract: Novel material for chromatographic separations, processes for its preparation, and separations devices containing the chromatographic material. In particular, the disclosure describes porous inorganic/organic hybrid particles having a chromatographically-enhancing pore geometry, which desirably may be surface modified, and that offer more efficient chromatographic separations than that known in the art.

Abstract: Regarding the metal oxide fine powder, which is used as the additive of a powder material and is hydrophobic treated on the surface, the peak of the particle size distribution of the agglomerated particle is made to be less than the same level of average size of the powder material, so that said powder has high dispersibility in the powder material. When this metal oxide fine powder is used as the external additive, such as the toner for the electronic photograph, the standup of the electrostatic charge, the image quality, and the cleaning characteristic are improved remarkably.

Abstract: Nano-wrapped molecular materials comprising molecule, molecular aggregate, or nanoparticle which has the surface at least partially covered with an ultrathin film containing oxygen-metal bond was disclosed. The nano-wrapped molecular materials successfully retain or are dramatically improved in the intrinsic physical and chemical properties of the individual molecules or nanoparticles.

Abstract: The present invention relates to a process for producing sol-gel condensates by A1) reacting an aqueous silica sol with a silicon alkoxide and subsequently A2) converting the condensate obtained from A1) with a polyfunctional organosilane.

Abstract: The invention pertains to methods of forming monolayers on various surfaces. The surfaces can be selected from a wide array of materials, including, for example, aluminum dioxide, silicon dioxide, carbon and SiC. The substrates can be planar or porous. The monolayer is formed under enhanced pressure conditions. The monolayer contains functionalized molecules, and accordingly functionalizes a surface of the substrate. The properties of the functionalized substrate can enhance the substrate's applicability for numerous purposes including, for example, utilization in extracting contaminants, or incorporation into a polymeric matrix.

Abstract: A magnetic recording medium of the present invention comprises a non-magnetic base film; a non-magnetic undercoat layer formed on the non-magnetic base film, comprising non-magnetic acicular composite particles and a binder resin; and a magnetic recording layer formed on the non-magnetic undercoat layer, comprising magnetic particles and a binder resin, the non-magnetic acicular composite particles having an average major axis diameter of 0.01 to 0.

Abstract: A coated ferromagnetic particle comprises a ferromagnetic core and a coating. The coating comprises a residue resulting from a thermal treatment of a coating material comprising a polymer selected from the group consisting of polyorganosiloxanes, polyorganosilanes, and mixtures thereof. A composite magnetic article comprises a compacted and annealed article of a desired shape. The composite magnetic article comprises a plurality of coated ferromagnetic articles. Each coated ferromagnetic particle comprises a ferromagnetic core and a coating. The coating comprises a residue resulting from a thermal treatment of a coating material comprising a polymer selected from the group consisting of polyorganosiloxanes, polyorganosilanes, and mixtures thereof.

Abstract: The invention provides a zinc oxide particle having suppressed surface activity which gives safe and effective UV ray shielding ability (especially at longer wavelengths) to a variety of products such as resin molds, coating compositions or cosmetics, and a process for the production of the same. The zinc oxide particle of the invention has on the surface a cover layer formed of zinc silicate in an amount of 0.5-50% by weight in terms of zinc silicate (Zn2SiO4) relative to the zinc oxide. The zinc oxide particle which contains solid solution iron or cobalt therein as well as a cover layer formed of zinc silicate has effective UV ray shielding ability at much longer wavelengths while it is suppressed in the surface activity.

Abstract: Metal Nanoshells having partial coverage of a substrate or core particle and methods of making them are provided. A method of making a partial metal nanoshell preferably includes asymmetrically confining a substrate particle and selectively layering a metallic material over the substrate particle according to the asymmetry. Confining the substrate particle may include attaching it to a support defining an exposed portion and a contact portion. The method may include either chemically modifying the substrate particle. The solid angle of coverage of the partial metal nanoshell may be influenced by the nature of the chemical modification, such as alternatives of activating and passivating the exposed portion.

Abstract: The invention provides a heat resistant aerogel insulation composite comprising an insulation base layer comprising hydrophobic aerogel particles and an aqueous binder, and a thermally reflective top layer comprising a protective binder and an infrared reflecting agent. The invention also provides a method of preparing a heat resistant aerogel insulation composite, as well as methods of preparing an aerogel binder composition and aerogel binder compositions so prepared.

Abstract: Amphiphilic block copolymers are used as structure-directing agents for the production of superparamagnetic nanostructured material. A block copolymer solution containing an amphiphilic block copolymer is formed. A sol-gel precursor is formed by hydrolyzing and condensing a silicate precursor solution. An iron precursor is added to either the block copolymer solution or the sol-gel precursor. The sol-gel precursor is mixed with the block copolymer solution to form a hybrid inorganic nanostructured material. Solvent is then removed resulting in the formation of individual nanostructured material which is calcinated to form the superparamagnetic nanostructured material. The resulting superparamagnetic nanostructured material may be in the shape of a sphere, a cylinder, lamellae, or a mesoporous structure.

Abstract: Non-magnetic composite particles composed of non-magnetic core particles having an average particle size of 0.01 to 0.3 &mgr;m, and inorganic fine particles having an average particle size of 0.001 to 0.07 &mgr;m. The fine particles are present in an amount of 0.1 to 20% by weight based on the weight of the non-magnetic particles are on the surface of each non-magnetic particle, and are fixed or anchored on the surface of each non-magnetic particle through a silicon compound The non-magnetic composite particles have a high polishing effect and a high dispersibility, and are useful as a non-magnetic undercoat layer for a magnetic recording medium.

Abstract: Multi-layered macromolecules wherein the layers are covalently bonded together and wherein the macromolecules are covalently bonded to solid particulate substrates, methods for the preparation of such compositions, and methods for their uses in a multitude of end use applications ranging from the purification of waste chemical and metal process streams to the separation and identification of proteins, peptides, and oligionucleotides.

Abstract: Dental composites containing hybrid fillers and process for their production. Dental compounds are disclosed which contain two- or multi-phase inorganic fillers in an organic polymer matrix. These are characterized by improved abrasion resistance.

Abstract: The present invention describes preparation of nanocomposite particles and structures by polymerizing monomers onto a functional inorganic colloid comprising a polymerization initiation site. The polymerization process is preferably a controlled/living polymerization process, including but not limited to, atom transfer radical polymerization and stable free radical polymerization. The nanocomposite particles can self-organize in solution, on surfaces or in films forming nanocomposite structures. Tethered AB block nanocomposite particles bring size control, solubility control and control over micro- and macro-functionality to the particles. The process may be catalyzed by a transition metal complex which participates in a reversible redox cycle with at least one of the group and a compound having a radically transferable atom or group, to form a nanocomposite particle with a tethered polymer chain. The process may be continued to form tethered copolymer chain.

Abstract: A curable composition comprising (A) a fluorinated amide compound having alkenyl radicals, (B) a fluorinated organohydrogensiloxane having SiH radicals, (C) a platinum group compound, (D) a silica powder, (E) an organosilane or organosiloxane having a monovalent perfluorooxyalkyl or perfluoroalkyl, divalent perfluorooxyalkylene or perfluoroalkylene radical and a hydroxy and/or alkoxy radical, and (F) an organosilane or organosiloxane having an alkenyl radical, a monovalent perfluorooxyalkyl or perfluoroalkyl, divalent perfluorooxyalkylene or perfluoroalkylene radical, and a hydroxy and/or alkoxy radical cures into a fluorinated elastomer that has good solvent resistance, chemical resistance, heat resistance, low-temperature properties, mold release, water and oil repellency and weather resistance as well as significantly improved mechanical strength and compression set.

Abstract: Dental glass powders, methods for producing the powders and dental compositions including the glass powders. The powders preferably have a well-controlled particle size, narrow size distribution and a spherical morphology. The method includes forming the particles by a spray pyrolysis technique. The invention also includes dental filler and restorative compositions that include the glass powders.

Abstract: A process for preparing a composition for producing nanostructured mouldings and layers comprises contacting an aqueous and/or alcoholic sol of a compound of an element selected from silicon sand metals of the main groups and transition groups of the Periodic Table with species possessing hydrolysable alkoxy groups and comprising at least one organically modified alkoxysilane or a precondensate derived therefrom, under conditions which lead to (further) hydrolysis of the species, and subsequent removal of the alcohol formed and any alcohol already present originally. The process is characterized in that the alcohol is removed in an amount such that the residual alcohol content of the composition is not more than 20% by weight.

Abstract: A wiper blade made of a compound having a methyl vinyl silicone polymer, a filler, and a friction-reducing additive is provided. The friction-reducing additive is present in an amount from between about 5-42 weight percent, preferably 11 percent. The average particle size of the friction-reducing additive is preferably less than 6 microns, thereby permitting extrusion of the compound into the shape of a wiper blade. Polytetrafluoroethylene is preferred as a friction-reducing additive, but other substances, such as boron nitride or graphite could be used.

Abstract: Modified silica fillers are prepared by contacting silica with blends or mixtures containing diorganodihalosilanes and monoorganotrihalosilanes in weight ratios of 1:0.1 to 1:2, respectively. While dialkyldichlorosilanes and monoalkyltrichlorosilane such as dimethyldichlorosilane and methyltrichlorosilane, respectively, are most preferred, the blends or mixtures may also comprise compositions containing n-propyltrichlorosilane, phenyltrichlorosilane, cyanopropyltrichlorosilane, and mercaptopropyltriethoxysilane.

Abstract: The invention relates to essentially water-insoluble amphiphilic particles or molecules having predominantly hydrophilic and predominantly hydrophobic domains distributed anisotropically over their surface and a particle size ranging from 1 nm to 100 &mgr;m, consisting of antagonistic partial amounts of particles or molecules, which in each case have predominantly hydrophilic or predominantly hydrophobic domains, the partial amounts of the particles or molecules being agglomerated or associated over polar interactions or hydrogen bonds, as well as to a method for producing these particles or molecules and to the selective use of the particles or molecules.

Abstract: A vibration damping silicone composition that exhibits an excellent vibration damping performance and long-term storage stability comprising a silicone oil, a silicone resin powder that is solid at room temperature, and a surface-hydrophobic silica powder having a pH of greater than 6 but less than 9. The composition is particularly useful in shock absorbers for electronic and/or electrical equipment such as compact disk players, compact disk changers, mini-disk players, and car navigation devices.

Abstract: In-organic fillers are modified by in-situ co-polymerization of vinyl silane and another vinyl monomer. Vinyl silane couples with the filler by Si—O bonds. The remaining vinyl groups on the surface of the treated fillers then co-polymerize with the other vinyl monomer. The modified in-organic fillers treated by the in-situ co-polymerization are subsequently used to fill the polymer matrix. Tensile and impact strength of filler-reinforced polymer composites are improved remarkably.

Abstract: The present invention relates to a novel organosilicon particle having the formula SiaObCcHd. The particle may be coated with an organic film, preferably a rigid connector compound. The present invention also provides a method of using the organosilicon particle and/or rigid connector compound in the formation of a low-k dielectric film.