456 results about "Organic media" patented technology

The present invention is directed to an electroconductive thick film composition comprising: (a) electroconductive metal particles selected from (1) Al, Cu, Au, Ag, Pd and Pt; (2) alloy of Al, Cu, Au, Ag, Pd and Pt; and (3) mixtures thereof; (3) glass frit wherein said glass frit is Pb-free; dispersed in (d) an organic medium, and wherein the average diameter of said electroconductive metal particles is in the range of 0.5-10.0 μm. The present invention is further directed to an electrode formed from the composition as detailed above and a semiconductor device(s) (for example, a solar cell) comprising said electrode.

The present invention provides a thick-film paste for printing the front side of a solar cell device having one or more insulating layers. The thick-film paste comprises an electrically conductive metal and a lead-tellurium-boron-oxide dispersed in an organic medium.

A method of removing organic iodides from non-aqueous organic media includes contacting the organic media with a silver or mercury-exchanged cationic ion exchange substrate at a temperature greater than about 50° C. The method is particularly effective for removing high molecular weight organic iodides from organic media such as acetic acid or acetic anhydride. Particular species removed include decyl iodides and dodecyl iodides from organic media such as acetic acid.

A process for preparing a crystalline rapamycin analog includes: combining the rapamycin analog with an organic medium to form a mixture; incubating the mixture until the rapamycin analog crystallizes; and recovering the crystalline rapamycin analog. The organic medium can be a solvent, and the process can include causing the rapamycin analog to dissolve into the solvent, and incubating the solvent until the rapamycin analog crystallizes. The following can also be performed: forming a slurry of crystalline rapamycin analog; stirring the rapamycin analog mixture until the rapamycin analog crystallizes; saturating the rapamycin analog solution; forming a supersaturated rapamycin analog solution; combining an antisolvent with the rapamycin analog and the solvent to form a biphasic mixture, and incubating the biphasic mixture to cause a liquid-liquid phase split.

A solar cell, comprising: a substrate, including p-n doping structure formed within said substrate; material attached to the back of said substrate, where said material includes glass mixture, aluminum material, organic medium and additive. Wherein said glass needs to be formed by combining two or more glasses: the main composition for post-mixed glass should include Al₂O₃, Bi₂O₅, B₂O₃, SiO₂, PbO, Tl₂O₃ and other metal and non-metal oxides. For the material composition, aluminum powder content is 60˜80 mass %, with approximately 90 to 99.99% purity. Additives include C₁₀˜C₂₄ stearic acid, with the content of less than 5 mass %. The C₁₀˜C₂₄ stearic acid may include oleic acid. Organic medium content is roughly 20˜35 mass %. Wherein said organic medium includes 60˜90 mass % ether class organic solvent, 10˜20 mass % cellulosic resin and 1˜5 mass % of leveling agent, rheological agent or thixotropic agent.

A composition of matter having a metal powder or powders of specified characteristics in a Reactive Organic Medium (ROM). These compositions can be applied by any convenient printing process to produce patterns of electrical conductors on temperature-sensitive electronic substrates. The pattern can be thermally cured in seconds to form pure metal conductors at a temperature low enough to avoid damaging the substrate.

A thick-film composition comprising: (a) conductive metal; (b) one or more inorganic binders; (c) antimony, antimony oxide, antimony-containing compound capable of forming an antimony oxide upon firing, or mixtures thereof; dispersed in (d) organic medium. The windshield defogger element and a method of forming a windshield defogger element comprising: (a) providing the thick film composition as above; (b) providing a glass substrate; (c) printing the composition of (a) onto said glass substrate; and (d) firing said composition and substrate. A vehicle having as the conductive element in the windshield defroster system a windshield defogger element comprising an antimony oxide containing layer as a protective layer. A windshield defogger element comprising an antimony oxide containing layer as a protective layer.

The present invention is directed to a thick film conductor composition comprised of (a) aluminum-containing powder; (b) amorphous silicon dioxide (c) and one or more optional glass frit compositions; dispersed in (d) organic medium. The amorphous silicon dioxide contributes to significant bow reduction tendency for solar cells thinner than 270 microns and larger than five inches square without significant effect on reducing the electrical performance of the fired solar cell. In addition and as preferred by solar cell manufacturers, the addition of glass frit reduces the dusting tendency of the aluminum thick film composition.

Carbon-silicon carbide brake preforms are manufactured by carbonizing a blend of carbon (e.g., polyacrylonitrile) fibers and thermosetting pitch resin, optionally along with a lubricant such as graphite, to provide an intermediate product having open porosity and subsequently filling the pores of the intermediate product with silicon by a melt infiltration process. Molded articles that consist principally of carbon, that have relatively high strength and resistance to decomposition by frictional heat, and that are suitable for melt infiltration with silicon, are produced by, e.g.: coating randomly oriented polyacrylonitrile-derived carbon fibers, optionally mixed with finely divided carbon powder, with a thermosetting blend of (a) pitch and (b) an organic medium, at an elevated temperature to form a viscous molding compound; molding the compound at a low pressure and elevated temperature so that a solid compact is obtained; stripping a molded article made of said compound from the mold; optionally heating the molded article at gradually increasing temperatures to insure complete condensation within the article; and carbonizing the condensed molded article in an inert atmosphere at gradually increasing temperatures to produce a molded C/C intermediate article suitable for melt-infiltration with silicon. The preforms may be configured in the form of a disc brake rotor or a disc brake pad.

The invention discloses a titanium dioxide/lignin-based composite nanoparticle, and a preparation method and application thereof, belonging to the technical field of composite nanoparticles. The method provided by the invention comprises the following steps: adding a quaternization reagent into an alkaline alkali lignin solution for a reaction so as to obtain quaternized lignin; subjecting the quaternized lignin to acid regulation, adding an anionic surfactant so as to obtain a quaternized lignin/anionic surfactant compound, and adding the compound into an ethanol suspension of nanometer titanium dioxide so as to obtain a mixed solution of titanium dioxide/lignin-based compound; and adding water with a pH value of 1 to 7 into the mixed solution and carrying out ageing so as to obtain titanium dioxide/lignin-based composite nanoparticle. The composite nanoparticle is low in cost, uniform in particle size, good in dispersibility and strong in compatibility with organic mediums; when applied to skin care products and anti-UV materials, the composite nanoparticle can substantially improve anti-UV capability; and titanium dioxide wrapped by the lignin-based compound can effectively shield the photocatalytic activity of the composite nanoparticle and improve the photostability of the composite nanoparticle.

Method for production of nanocomposites from nanopowders present in agglomerated form and organic binders. Through surface modification of the nanofillers in an organic medium it is possible to divide the agglomerates permanently to such an extent that transparent nanocomposites can be preserved. The modified nanopowder is preferably isolated as a dry intermediate. The production of the disclosed nanocomposites is simpler than the production of nanocomposites by the sol-gel technique and in addition is more flexible and has wider applicability. An important application for the nanocomposites is scratch-resistant paints.

The invention discloses an organic medium special for raising rice by mechanical seedling transplantation and belongs to the technical field of rice culture media. The organic medium is characterized by comprising the following components in percentage by weight: 10 to 30 percent of biomass power plant ash, 20 to 40 percent of monosodium glutamate leftovers, 20 to 40 percent of powdered rice hulls, 3 to 8 percent of water retainer, 2 to 5 percent of adhesive and 0.2 to 0.5 percent of root promoter. The organic medium special for raising rice by mechanical seedling transplantation is pollution-free and toxin-free, meets the requirements on environmental protection and low carbon, and is an optimized medium for developing mechanical rice seedling transplanting production.

The invention discloses a preparation method of a paddy seedling raising medium. In the preparation method, livestock and poultry feces is used as foodstuff for earthworm to provide an environment suitable for growth of earthworm, and the earthworm feces generated by earthworm treatment is screened into earthworm feces with the particle size of 1-4mm, and uniformly mixed with nutrient soil and vermiculite to prepare a novel organic medium, wherein the particle sizes of vermiculite and the nutrient soil are 3-5mm. The medium comprises the components by volume percent: 50-60% of earthworm feces, 30-40% of vermiculite and 10-20% of nutrient soil. The medium is simple in preparation method, rich in resources, inexpensive in materials, sufficient in nutrients and stable in property, changes wastes into valuables, and reduces environmental pollution; and used for paddy seedling raising, the medium improves the paddy plug seedling raising quality, reduces the seedling raising steps (like fertilization) and the cost, and promotes the industrialized development of paddy machine seedling transplanting.

The invention relates to a photovoltaic and organic Rankine cycle coupling combined heat and power supply system and belongs to the technical field of energy and environment. The photovoltaic and organic Rankine cycle coupling combined heat and power supply system comprises a heat transfer fluid circulation loop, a biomass burner smoke discharge loop, a heat supply hot water loop and a cooling loop, and further comprises a high temperature stage organic Rankine circulation loop, a low temperature stage organic Rankine circulation loop and a solar cell cooler / organic medium preheater. The high temperature stage organic Rankine circulation loop is connected with the heat transfer fluid circulation loop, the low temperature stage organic Rankine circulation loop is connected with the high temperature stage organic Rankine circulation loop, and the cooling loop is connected with the low temperature stage organic Rankine circulation loop. By adoption of a two-stage overlaid type organic Rankine cycle, the photovoltaic and organic Rankine cycle coupling combined heat and power supply system can achieve gradient heat utilization, greatly lower cost, improve utilization efficiency of energy and photovoltaic power generation efficiency, save materials and cost, and facilitate achievement of an individual distributed power generation system.

The invention relates to a method of manufacturing a p-type electrode comprising the steps of: preparing an N-type base semiconductor substrate comprising an n-base layer, a p-type emitter on the n-base layer, a first passivation layer on the p-type emitter, and a second passivation layer on the n-base layer; applying a conductive paste onto the first passivation layer, wherein the conductive paste comprises (i) 100 parts by weight of a conductive powder comprising a metal selected from the group consisting of silver, nickel, copper and a mixture thereof, (ii) 0.3 to 8 parts by weight of aluminum powder with particle diameter of 3 to 11 μm, (iii) 3 to 22 parts by weight of a glass frit, and (iv) an organic medium; and firing the conductive paste.