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511results about "Sol preparation" patented technology
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Multi-component particles comprising inorganic nanoparticles distributed in an organic matrix and processes for making and using same
Multi-component particles comprising inorganic nanoparticles distributed in an organic matrix and processes for making and using same. A flowing aerosol is generated that includes droplets of a precursor medium dispersed in a gas phase. The precursor medium contains a liquid vehicle and at least one precursor. At least a portion of the liquid vehicle is removed from the droplets of precursor medium under conditions effective to convert the precursor to the nanoparticles or the matrix and form the multi-component particles.
Owner:CABOT CORP
Nanoparticulate titanium dioxide coatings, and processes for the production and use thereof
Nanoparticulate titanium dioxide coating produced by educing flocculates of titanium dioxide nanoparticles from a titanyl sulfate solution and dispersing the nanoparticles in a polar sol-forming medium to make a sol suitable as a coating usable to impart photocatalytic activity, U.V. screening properties, and fire retardency to particles and to surfaces. The photocatalytic material and activity is preferably localized in dispersed concentrated nanoparticles, spots or islands both to save costs and leverage anti-microbial effects.
Owner:SHERMAN JONATHAN
Copolymer surfactants
InactiveUS20090076211A1Improved flow and levelingSpeed up the flowOther rubber coatingsTransportation and packagingSURFACTANT BLENDPolymer chemistry
Owner:COLUMBIA INSURANCE CO
Nanoparticulate titanium dioxide coatings, and processes for the production and use thereof
Nanoparticulate titanium dioxide coating produced by educing flocculates of titanium dioxide nanoparticles from a titanyl sulfate solution and dispersing the nanoparticles in a polar sol-forming medium to make a sol suitable as a coating usable to impart photocatalytic activity, U.V. screening properties, and fire retardency to particles and to surfaces. The photocatalytic material and activity is preferably localized in dispersed concentrated nanoparticles, spots or islands both to save costs and leverage anti-microbial effects.
Owner:SHERMAN JONATHAN
Colloidal rod particles as nanobar codes
Owner:SURROMED +1
Method of manufacture of colloidal rod particles as nanobarcodes
Owner:SURROMED +1
Process for Solvent Shifting a Nanoparticle Dispersion
ActiveUS20100152077A1Less polar phaseEfficient and economical processSolvent extractionTransportation and packagingSolventNanometre
A process for replacing the continuous phase of a nanoparticle dispersion with a less polar phase, includes filtering the dispersion through a semi-permeable membrane filter to remove the continuous phase, and introducing a less polar phase.
Owner:CERION
Production of metal and metal-alloy nanoparticles with high repetition rate ultrafast pulsed laser ablation in liquids
ActiveUS20100196192A1Prevent coagulationFaster throughputMaterial nanotechnologyOther chemical processesUltrashort laserFocal volume
Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.
Owner:IMRA AMERICA
Method of manufacture of colloidal rod particles as nanobar codes
InactiveUS7045049B1Speed up the processMaterial nanotechnologyNanomagnetismNanoparticleSynthesis methods
Owner:SICPA HLDG SA +1
Colloidal nanosilver solution and method for making the same
InactiveUS20030185889A1Suitable for useHigh concentrationPowder deliveryBiocideAlginic acidColloidal Solution
The present invention provides a colloidal nanosilver solution which contains nanosilver particles having diameters between 1 nm and 100 nm. The silver content in the colloidal solution is between 0.001% to 0.4% by weight. The colloidal nanosilver solution also contains a gelling agent which includes, but is not limited to, starch or its derivative, cellulose or its derivative, polymer or copolymer of acrylate or acrylate derivative, polyvinyl pyrrolidone, alginic acid, and xanthogenated gel. The present invention also provides a method for making the colloidal nanosilver solution. The colloidal nanosilver solution prepared by this method does not contain any toxic or impure substances.
Owner:CC TECH INVESTMENT
Method and apparatus for producing colloidal nanoparticles in a dense medium plasma
InactiveUS7128816B2Easy to convertEasily interchangeablePowder deliveryPhotography auxillary processesConductive materialsColloidal nanoparticles
A method and apparatus is utilized for producing colloidal dispersions of nanoparticles of electrically conducting materials. The colloidal dispersions are produced in a dense media plasma reactor comprising at least one static electrode and at least one rotating electrode. The plasma reaction sputters off minute particles of the electrically conducting material from which the electrodes are made. Methods of using the colloidal dispersions thus made are also described. Colloidal dispersions of silver produced in this manner are highly effective for bactericidal purposes.
Owner:WISCONSIN ALUMNI RES FOUND
Microfluidic ser(r)s detection
InactiveUS20050042615A1Easy to identifyIncrease effective size/weightFlow mixersOther chemical processesAnalyteColloid
The present invention relates to a microfluidic method of generating in situ a colloid for use in detecting an an using for example SER(R)S, as well as a method of detecting an analyte using SER(R)S in a microfluidic system. The invention also relates to microfluidic devices for use in detecting analytes such as by way of SER(R)S signals.
Owner:UNIV OF STRATHCLYDE +1
Treatment of humans with colloidal silver composition
Owner:AMERICAN SILVER LLC
Method and apparatus for production of uniformly sized nanoparticles
ActiveUS20130001833A1Reduce in quantityLightweight productionMetal-working apparatusNanotechnologyTarget surfaceNanoparticle
An apparatus and process for creating uniformly sized, spherical nanoparticles from a solid target. The solid target surface is ablated to create an ejecta event containing nanoparticles moving away from the surface. Ablation may be caused by laser or electrostatic discharge. At least one electromagnetic field is placed in front of the solid target surface being ablated. The electromagnetic field manipulates at least a portion of the nanoparticles as they move away from the target surface through the electromagnetic field to increase size and spherical shape uniformity of the nanoparticles. The manipulated nanoparticles are collected.
Owner:EVOQ NANO INC
High flash point additives for treating carbon-based fuels
Owner:LIQUID MINERALS GRP LTD
Metal colloid and catalyst produced from such metal colloid
InactiveUS20060079396A1Inhibit aggregationHigh water-solubility of the colloidOther chemical processesOrganic-compounds/hydrides/coordination-complexes catalystsAluminum IonMischmetal
Disclosed is a metal colloid comprising: a solvent composed of water or a mixed solvent of water and an organic solvent; cluster particles comprising one or more metal species; and a protective agent for protecting the cluster particles, characterised in that the protective agent comprises a polymeric material which can be bound to one or more ion species selected from the group consisting of alkali earth metal ions, transition metal ions, rare earth metal ions, an aluminum ion and a gallium ion, and the protective agent has one or more ion species selected from the group consisting of alkali earth metal ions, transition metal ions, rare earth metal ions, an aluminum ion and a gallium ion bounded thereto.
Owner:TANAKA PRECIOUS METAL IND
Copolymer surfactants
ActiveUS20050039635A1Improved pigment dispersionTransportation and packagingInksSolvent basedSURFACTANT BLEND
The present invention relates to copolymer surfactants and their use in, e.g., coatings such as latex paint and solvent-based paint, and to a method of dispersing colored pigments using the copolymer surfactant, colorant compositions in which at least one pigment is dispersed by a copolymer surfactant of the invention, a paint which has a colorant composition of the invention, and a method for making a paint having a colorant composition of the invention.
Owner:BENJAMIN MOORE & CO
Gas dispersion manufacture of nanoparticulates, and nanoparticulate-containing products and processing thereof
In one aspect, the present invention relates to a method of making multi-phase particles that include nanoparticulates and matrix, which maintains the nanoparticulates in a dispersed state. A flowing gas dispersion is generated that includes droplets of a precursor medium dispersed in a gas phase. The precursor medium contains liquid vehicle and at least a first precursor to a first material and a second precursor to a second material. The multi-phase particles are formed from the gas dispersion by removing at least a portion of the liquid vehicle from the droplets of precursor medium. The nanoparticulates in the multi-phase particles include the first material and the matrix in the multi-phase particles includes the second material.
Owner:SICPA HLDG SA
High-concentration nanoscale silver colloidal solution and preparing process thereof
InactiveUS20080064767A1Good dispersionProvide energyMaterial nanotechnologyOther chemical processesHigh concentrationHigh density
The present invention relates to a high-concentration nanoscale silver colloidal solution and the preparing process thereof. The colloidal solution of the present invention comprises a high content of silver particles, i.e. approximately 1.5 wt %. The mean size of the nanoscale silver is less than 10 nm. In the preparing process, silver salt, ionic chelating agent, stabilizing agent, reducing agent, solvent and reaction accelerator are homogeneously mixed together. The increase of reaction temperature by external heat source accelerates completed reaction. By using the specified reaction accelerator and chelating agent and under the operating condition of the present invention, high-density silver colloidal solution is obtained while inhibiting particle aggregation. Therefore, the resulting nanoscale silver colloidal solution contains very small-sized particles and the stability thereof is satisfactory.
Owner:NATIONAL TSING HUA UNIVERSITY
Nanoparticle colloid, method for its production and its use in the growth of carbon nanotubes
InactiveUS20070202304A1Small sizeStable chemical degradationMaterial nanotechnologyDecorative surface effectsCarbon nanotubeMaterials science
A method for producing a colloid of metallic nanoparticles including the steps of: providing metal ions in solution; providing a stabilizing agent; and reducing said metal ions in the presence of said stabilizing agent, so that metallic nanoparticles are formed with a surrounding layer of said stabilizing agent, wherein the reduction step is carried out at a temperature of not less than 20° C. and not more than 150° C. The metallic nanoparticles are formed of a mixture of transition metal and noble metal, such as Ni—Pd. The resultant nanoparticles have a high stability in terms of size and chemical degradation and so can be stored for long periods. They are therefore particularly suited for forming patterned nanoparticle arrays on a substrate by nanocontact printing for the subsequent formation of a corresponding array of carbon nanotubes or nanofibers via plasma enhanced CVD.
Owner:CAMBRIDGE UNIV TECH SERVICES LTD
Metal nano-particles and method for preparing the same, dispersion of metal nano-particles and method for preparing the same, and thin metallic wire and metal film and method for preparing these substances
ActiveUS7628840B2Reduce in quantityImprove conductivityMaterial nanotechnologySemiconductor/solid-state device detailsMetal particleAlloy
Each of the metal nano-particles present in a dispersion, which comprises at least one metal selected from the group consisting of precious metals and transition metals or an alloy of at least two metals selected from the foregoing metals, comprises a metal particle in which an organic metal compound of a fatty acid and / or an amine-metal complex is adhered to the periphery of the metal particle. This organic metal compound and the amine-metal complex are admixed together in a solvent and then the resulting mixture is subjected to a reducing treatment to thus form a dispersion containing metal nano-particles in a concentration of not less than 5% by mass and not more than 90% by mass. The resulting dispersion is applied onto the surface of a base material, followed by drying the applied layer of the dispersion and then firing the dried layer of the dispersion at a low temperature to thus form a thin metallic wire or a metal film having conductivity.
Owner:ULVAC INC +1
Supercrystalline Colloidal Particles and Method of Production
ActiveUS20110150938A1Complex structureUltrasonic/sonic/infrasonic diagnosticsOrganic active ingredientsNanoparticleOrganic dye
The present invention concerns size- and shape-controlled, colloidal superparticles (SPs) and methods for synthesizing the same. Ligand-functionalized nanoparticles such as nonpolar-solvent-dispersible nanoparticles, are used, and the solvophobic interactions can be controlled. Advantageously, supercrystalline SPs having a superlattice structure, such as a face-centered cubic structure, can be produced. Further, the methods of the invention can provide SPs that self-assemble and are monodisperse. The SPs can be doped with organic dyes and further assembled into more complex structures.
Owner:UNIV OF FLORIDA RES FOUNDATION INC
Encoded nanoparticles in paper manufacture
Owner:SURROMED
High flash point additives for treating carbon-based fuels
A simple method is disclosed to produce oil soluble nano particle size additives with significantly higher flash points to improve the safety aspects of these products especially when used in, around, and near high temperature combustion equipment.
Owner:LIQUID MINERALS GRP LTD
Materials and methods for the preparation of nanocomposites
Disclosed herein is an isolable colloidal particle comprising a nanoparticle and an inorganic capping agent bound to the surface of the nanoparticle, a method for making the same in a biphasic solvent mixture, and the formation of structures and solids from the isolable colloidal particle. The process can yield photovoltaic cells, piezoelectric crystals, thermoelectric layers, optoelectronic layers, light emitting diodes, ferroelectric layers, thin film transistors, floating gate memory devices, phase change layers, and sensor devices.
Owner:UNIVERSITY OF CHICAGO
Method of making and using nanoscale metal
InactiveUS20050217427A1Large specific surface areaFavorable reaction kineticsMaterial nanotechnologyTransportation and packagingEnvironmental remediationColloid
The invention provides methods of producing colloids of nanoscale metallic particles particularly useful in the in situ environmental remediation of chlorinated solvents. The methods include ball milling an elemental metal to form a colloid of nanoscale metallic particles having ideal size and metallurgical properties to enhance the reductive dehalogenation of halogenated hydrocarbons.
Owner:ARCADIS U S
Stable colloidal gold nanoparticles with controllable surface modification and functionalization
ActiveUS20120225021A1Ultrasonic/sonic/infrasonic diagnosticsMaterial nanotechnologySource materialColloid
In the present invention, a method of producing stable bare colloidal gold nanoparticles is disclosed. The nanoparticles can subsequently be subjected to partial or full surface modification. The method comprises preparation of colloidal gold nanoparticles in a liquid by employing a top-down nanofabrication method using bulk gold as a source material. The surface modification of these nanoparticles is carried out by adding one or multiple types of ligands each containing functional groups which exhibit affinity for gold nanoparticle surfaces to produce the conjugates. Because of the high efficiency and excellent stability of the nanoparticles produced by this method, the fabricated gold nanoparticle conjugates can have surface coverage with functional ligands which can be tuned to be any percent value between 0 and 100%.
Owner:IMRA AMERICA
Hydrophilic functionalized colloidal silica compositions, methods of making, and uses therefor
Owner:GENERAL ELECTRIC CO
Gas dispersion manufacture of nanoparticulates, and nanoparticulate-containing products and processing thereof
In one aspect, the present invention relates to a method of making multi-phase particles that include nanoparticulates and matrix, which maintains the nanoparticulates in a dispersed state. A flowing gas dispersion is generated that includes droplets of a precursor medium dispersed in a gas phase. The precursor medium contains liquid vehicle and at least a first precursor to a first material and a second precursor to a second material. The multi-phase particles are formed from the gas dispersion by removing at least a portion of the liquid vehicle from the droplets of precursor medium. The nanoparticulates in the multi-phase particles include the first material and the matrix in the multi-phase particles includes the second material.
Owner:CABOT CORP
Phase transfer of nanoparticles
The invention relates to phase transfers of nanoparticles and to a catalysis using said nanoparticles. The aim of the invention is to facilitate a transfer of nanoparticles from an organic solution to an inorganic, especially, aqueous solution. To this end, a generically describable substance class, for example the commercially available 4-dimethylaminopyridine (DMAP), which is for example dissolved in water, is added to the organic solution in sufficient amounts. This measure has the effect that the nanoparticles are readily transferred in a one-step process from the organic phase (in each case in the top section) to the inorganic phase (in each case in the lower section) in the sample container.
Owner:CARUSO FRANK +1
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