СПОСОБ ИЗГОТОВЛЕНИЯ НАНОЧАСТИЦ ИЛИ НИТЕВИДНЫХ НАНОКРИСТАЛЛОВ, СПОСОБ ИЗГОТОВЛЕНИЯ НЕОРГАНИЧЕСКИХ ФУЛЛЕРЕНОПОДОБНЫХ СТРУКТУР ХАЛЬКОГЕНИДА МЕТАЛЛА, НЕОРГАНИЧЕСКИЕ ФУЛЛЕРЕНОПОДОБНЫЕ СТРУКТУРЫ ХАЛЬКОГЕНИДА МЕТАЛЛА, СТАБИЛЬНАЯ СУСПЕНЗИЯ IF-СТРУКТУР ХАЛЬКОГЕНИДА МЕТАЛЛА, СПОСОБ ИЗГОТОВЛЕНИЯ ТОНКИХ ПЛЕНОК ИЗ IF-СТРУКТУР ХАЛЬКОГЕНИДА МЕТАЛЛА И ТОНКАЯ ПЛЕНКА, ПОЛУЧЕННАЯ ТАКИМ СПОСОБОМ, И НАСАДКА ДЛЯ РАСТРОВОГО МИКРОСКОПА

Изобретение может быть использовано для получения светочувствительных элементов в солнечных батареях, при производстве инертных насадок для микроскопов SPM, аккумуляторных батарей и т.д. Сущность изобретения: предлагается способ приготовления наночастиц металлических оксидов, содержащих введенные частицы металла, относящийся также к получаемым из данных оксидов неорганическим фуллереноподобным (IF) структурам халькогенидов металла с интеркалированным и/или заключенным внутри металлом, который включает нагрев материала из металла I с водяным паром или выпаривание электронным лучом упомянутого материала из металла I с водой или другим подходящим растворителем, в присутствии соли металла II; сбор оксида металла I с присадкой металла II или продолжение процесса путем последующего сульфидирования, дающего достаточные количества IF-структур халькогенида металла I с интеркалированным и/или заключенным внутри металлом II. Соль металла II представляет собой предпочтительно соль щелочного, щелочноземельного ...

ВОЛОКНА НА ОСНОВЕ ОКСИДА ЦИРКОНИЯ/ОКСИДА МЕТАЛЛА

... 1. Способ получения волокна на основе циркония/оксида металла, включающий i) смешивание раствора соли металла или коллоидной дисперсии оксида металла, где упомянутый металл выбирают из группы, состоящей по меньшей мере из одного из металлов Группы IIA, переходного металла, металлов Группы IIIA и металлов Группы IIIB, с коллоидной дисперсией аморфного цирконийсодержащего полимера согласно формуле (I) [Zr4(OH)12(X)2(H2O)4]n (X)2n· 2nH2O, где Х представляет анион, совместимый с цирконийсодержащим полимером; n представляет целое число от 1 до менее 200, для создания смешанной коллоидной дисперсии; формование смешанной коллоидной дисперсии в волокно на основе циркония/металла. 2. Способ по п.1, в котором Х выбирают из группы, состоящей из NO3-, Cl- и ClCH2COO-. 3. Способ по п.2, дополнительно отличающийся тем, что упомянутая коллоидная дисперсия цирконийсодержащего полимера имеет соотношение Х к цирконию в диапазоне от около 1,0-0,98 до около 1,0-1,3 для поддержания упомянутой коллоидной дисперсии ...

КОМПОЗИТ ИЗ НАПОЛНИТЕЛЯ И ВОЛОКОН

... 1. Композит наполнитель-волокно, содержащий (а) подачу гасителя, содержащего лимонную кислоту, в ректор первой ступени, (b) проведение реакции гасителя, содержащего лимонную кислоту, в реакторе первой ступени в присутствии диоксида углерода для получения СаСО3пятки (основы) и (c) добавление гасителя, содержащего бикарбонат натрия, к материалу пятки (основы) в реакторе первой ступени в присутствии СО2для получения шлама из гидроксида кальция, частично превращенного в карбонат кальция, и (d) проведение реакции шлама из гидроксида кальция, частично превращенного в карбонат кальция, в реакторе второй ступени в присутствии диоксида углерода и фибрил для получения композита наполнитель-волокно. 2. Композит наполнитель-волокно по п.1, где волокно имеет толщину от около 0,1 до около 2 мкм и длину от около 10 до около 400 мкм. 3. Композит наполнитель-волокно по п.2, где наполнитель является ромбоэдрическим, имеющим удельную площадь поверхности от около 5 до около 11 м2/г. 4. Композит наполнитель-волокно ...

МИКРОСТРУКТУРИРОВАННЫЕ КОМБИНИРОВАННЫЕ ЧАСТИЦЫ

... 1. Микроструктурированные комбинированные частицы, получаемые способом, в котором большие частицы соединяют с маленькими частицами, причем- большие частицы имеют средний диаметр частиц в области от 0,1 мкм до 10 мм,- средний диаметр маленьких частиц составляет самое большее 1/10 среднего диаметра больших частиц,- большие частицы включают по меньшей мере один полимер,- маленькие частицы включают карбонат кальция,- маленькие частицы располагаются на поверхности больших частицы и/или неоднородно распределены внутри больших частиц, отличающиеся тем, маленькие частицы включают частицы осажденного карбоната кальция со средним размером частиц в области от 0,01 мкм до 1,0 мм.2. Микроструктурированные комбинированные частицы, получаемые способом, в котором большие частицы соединяют с маленькими частицами, причем- большие частицы имеют средний диаметр частиц в области от 0,1 мкм до 10 мм,- средний диаметр маленькие частицы составляет самое большее 1/10 среднего диаметра больших частиц,- большие частицы ...

НАНОЧАСТИЦЫ ВОЛОКОН ОКСИДА КРЕМНИЯ С РАЗВИТОЙ ПОВЕРХНОСТЬЮ

... 1. Наночастица из множества волокон, в которой каждое волокно контактирует с одним другим волокном и каждое волокно имеет длину примерно 1-5000 нм и толщину примерно 1-50 нм.2. Наночастица по п.1, которая состоит из оксида кремния.3. Наночастица по п.1, в которой каждое волокно имеет длину примерно 1-250 нм.4. Наночастица по п.1, в которой каждое волокно имеет толщину примерно 1-25 нм.5. Наночастица по п.1, в которой каждое волокно имеет толщину примерно 1-10 нм.6. Наночастица по п.1, в которой каждое волокно имеет длину примерно 1-250 нм и толщину примерно 1-10 нм.7. Наночастица по п.1, в которой волокна имеют разную толщину и разную длину.8. Наночастица по п.1, в которой волокна имеют равномерную толщину и равномерную длину.9. Наночастица по п.1, которая состоит примерно из 10-10волокон.10. Наночастица по п.9, которая состоит по меньшей мере примерно из 10волокон.11. Наночастица по п.10, которая состоит по меньшей мере примерно из 10волокон.12. Наночастица по п.1, которую определяют как ...

ОГНЕСТОЙКИЙ ПОЛИМЕРНЫЙ КОМПОЗИЦИОННЫЙ МАТЕРИАЛ (ВАРИАНТЫ) И СПОСОБ ЕГО ПОЛУЧЕНИЯ

... 1. Огнестойкий полимерный композиционный материал, содержащий полимерную основу и огнестойкий наполнитель в полимерной основе, включающий затравочный порошкообразный боэмит, имеющий отношение длины к диаметру частиц не менее 3:1, причем композиционный материал имеет класс огнестойкости V-0 или V-1 согласно методу UL 94.2. Композиционный материал по п.1, отличающийся тем, что он имеет класс огнестойкости V-0.3. Композиционный материал по п.1, отличающийся тем, что он имеет указанную огнестойкость в отвержденной форме.4. Композиционный материал по п.3, отличающийся тем, что он является полимерным составляющим элементом.5. Огнестойкий полимерный композиционный материал, содержащий полимерную основу и огнестойкий наполнитель в полимерной основе, включающий затравочный порошкообразный боэмит, имеющий отношение длины к диаметру частиц не менее 3:1, отличающийся тем, что он находится в виде раствора для покрытия поверхности, при этом характеризуется указанной огнестойкостью в покрытии, причем ...

Способ получения водорода и углеродных нановолокон и установка для осуществления такого способа

Группа изобретений относится к химической промышленности. Для получения водорода и углеродных нановолокон проводят каталитический пиролиз легких углеводородов. Сырье, предварительно очищенное от каталитических ядов и механических примесей и разогретое до 500-750 °С, поступает в реактор кипящего слоя, куда также непрерывно подается катализатор, содержащий переходные металлы подгруппы железа, с размерами гранул от 0,1 до 3 мм. Реакция происходит при температуре 500-750 °С и давлении от 1 до 10 атм. В качестве сырья используют метан, природный газ, попутный нефтяной газ или смесь пропана и бутана технических. Катализатор подается выше перфорированной сетки с размером отверстий не более 0,09 мм, расположенной в нижней части реактора. Сырье подается ниже перфорированной сетки. Катализатор, обрастая в ходе реакции углеродным материалом, опускается под собственным весом на перфорированную сетку, которая является частью системы выгрузки углеродного продукта, где осуществляется выгрузка углеродного ...

Способ изготовления брикетов для получения кремния, карбида кремния или ферросилиция в низкошахтных электроплавильных печах

Изобретение относится к металлургии , в частности к способу изготов ления брикетов для получения кремния карбида кремния и ферросилиция в низкошахтных электроплавильных печах. , Целью изобретения является упрощение процесса прц обеспечении высокого качества брикетов за счет снижения загрязнения. Из смеси кварцевого песка, карбюризатора и битумного связующего прессуют заготовки. Насыпной вес сформированных заготовок должен превышать насыпной вес кварцевого песка. Заготовки подвергают термообработке во вращающейся трубчатой печи в засыпке из кварцевого песка. Заготовки формуют из смеси, содержащей масД кварцевого песка, и с удельным весом 1,-1,6 г/см3. Термообработку проводят при нагреве слоя засыпки до 500°С. В предложенном способе заготовки, сформованные без применения горячего брикетирования с помощью битумного связующего и имеющие сравнительно низкую прочность в непросушенном состоянии, удовлетворительно отверждаются во вращающейся печи и готовые брикеты соответствуют всем физическим ...

Magnetische, spindelförmige Legierungsteilchen mit Kobalt und Eisen als Hauptbestandteilen sowie Verfahren zu deren Herstellung

Magnetische, spindelförmige Legierungsteilchen mit Kobalt und Eisen als Hauptbestandteilen sowie Verfahren zu deren Herstellung

VERFAHREN ZUR HERSTELLUNG VON GAMMA-EISEN(III)-OXID

DISPERSIONEN

Wasser- und Feststoff-Rückgewinnung in einer Papiermühle

VERFAHREN ZUR HERSTELLUNG VON MIT KIESELSÄURE BESCHICHTETEN TEILCHEN

Verfahren zur Herstellung von Sonnenschutzmitteln.

Keramische Körper auf Basis von mikrokristallinem Aluminiumoxid.

VERFAHREN ZUR HERSTELLUNG VON FEINTEILIGEN, NADELFOERMIGEN, MAGNETISCHEN EISENOXIDEN

VERFAHREN ZUR HERSTELLUNG EINES SILAZANPOLYMEREN

Free flowing spheroidal agglomerates of basic cobalt (II) carbonate and hydroxide

Agglomerates of fine particles of basic cobalt carbonate of general formula Co(OH)2aCO31-a, where 0.1 <= a <= 0.9, have a spherical form with mean dia. 3-50 mu m. Also claimed is a method of producing such agglomerates by reacting aq. solns. of an alkali metal and/or ammonium carbonate and/or hydrogen carbonate with a soln. of CoCl2, Co(NO3)2 or CoSO4 at 60-90 deg C. The basic cobalt carbonate agglomerate thereby produced is filtered and washed.

VERFAHREN ZUR HERSTELLUNG VON EISENOXIDROTPIGMENTEN

Verfahren zur Herstellung von nadelfoermigem gamma-Eisen(III)-oxid

VERFAHREN ZUR HERSTELLUNG VON OBERFLAECHENBEHANDELTEN PIGMENTEN

Verfahren zur Herstellung von Rutilpigmenten abgerundeter Teilchenform aus Titanchloridloesungen

Method for converting UO3 or U308 into hydrated UO4

METHOD OF PRODUCING METAL OXIDES AND NON-METAL OXIDES

... 1363138 Finely divided oxides INSTITUT METALLURGII IMENI A A BAIKOVA AKADEMII NAUK SSSR and GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT REDKOMETALLICHESKOI PROMYSHLENNOSTI 26 Aug 1971 40031/71 Headings C1A and C1N Finely divided oxides are produced by oxidizing an element or halide thereof at 1000- 6000‹ C. with a gas stream containing at least 5% by volume dissociated oxygen. A gas containing oxygen in at least 5% excess, is passed through an induction discharge into a reaction zone into which the element or halide is introduced at a point where the dissociated oxygen is uniformly distributed in the stream. In examples, TiCl4, Fe powder, and Si powder were oxidized to give TiO2, gamma-Fe2O3 with particles 500-2000 Š in size, and SiO2 with an average particle size of 0À02-0À04 Á. Oxides of Zn, Al, Cu, Ti, B, and Ge may be made similarly by oxidation of the elements.

Method of fabricating nitride crystal,liquid phase growth method,nitride crya l,nitride crystal powders,and vapor phase growth method

PIGMENT DISPERSIONS

... 1352618 Pigments for latices UNION CARBIDE CORP 6 July 1971 31594/71 Heading C3P [Also in Division C4] A pigment dispersion or paint composition comprises liberated, short fibre, cationic colloidally-dispersed chrysotile asbestos fibres having anionic pigment particles held along the lengths thereof, the fibres having a specific surface area of 60-80 m.2/g., a reflectance of 74-77% and a magnetic content of less than 0À60%. The liberated asbestos fibres are obtained from asbestos ore by an hydraulic beneficiation process in which an initial wet grinding and screening is followed by wet mechanical and/or chemical treatment to liberate the individual fibres from bundles thereof, and a further wet grinding to the desired degree of liberation, indicated by the surface area. The anionic pigment may be titanium dioxide, zinc sulphide, zinc oxide, basic white lead silicate, lithopone, iron oxide or antimony oxide, and/or an extender pigment, e.g. whiting, bentonite or other clays, talc ...

FIBROUS SHEET MATERIAL

Preparation of green briquettes for silicon etc. production

A process and apparatus for the preparation of green briquettes for the production of silicon or silicon carbide or ferrosilicon in electric pit furnaces, quartz sand, a carbon carrier and a bituminous binder being mixed together, the mixture being shaped into blanks from which the green briquettes are formed by heat treatment. The process is performed with the use of blanks which are free from melted bituminous caking coal and whose specific weight is made greater than the bulk density of quartz sand by adjustment of the proportions of the mixture and by compacting. The blanks are introduced for the heat treatment into a heated rotating drum furnace whose lower part is filled with quartz sand to an extent such that the heat treatment proceeds in a dip bed of quartz sand.

METHOD OF PREPARING METAL CARBIDES AND THE LIKE AND PRECURSORS USED IN SUCH METHOD

SILICON CARBIDE

PRODUCING SILICON NITRIDE

Whisker Orientation and Shaped Bodies containing Uniaxially Oriented Whiskers

... 1,174,959. Filaments &c. containing oriented "whiskers". CARBORUNDUM CO. 14 Sept., 1967 [16 Sept., 1966], No.41987/67. Heading B5B. [Also in Divisions C1 C3 and D1] Shaped structures including a non-flowable matrix having uniaxially oriented "whiskers" embedded therein are produced by dispersing the whiskers in a flowable dispersion medium which comprise a matrix-forming material, causing the dispersion to flow as a liquid stream and constricting the stream in - such a manner that the whiskers are uniaxially oriented in the stream, and causing the stream to solidify. The shaped body or structure may be a filament or film. The constriction may be effected by spinning the dispersion through an orifice or extruding it through an extrusion die, e.g. a die having a slot-shaped extrusion orifice. The liquid stream, after spinning or extrusion, may be drawn to cause further constriction or attenuation of the liquid stream. The term "whisker" is defined as a short acicular single crystal fibre ...

Method of preparing sunscreens

A method of preparing sunscreens in which a dispersion of zinc oxide particles in an oil is formed by milling in the presence of a particulate grinding medium and mixed with cosmetically acceptable materials is claimed. The particles of zinc oxide have an average size of from 0.005 to 0.15 micron and the dispersion is substantially transparent to visible light but with an extinction coefficient at 308 nm (E(308)) and at 360 nm (E(360)) of at least 9 litres per gram per centimetre. The ratio E(360):E(308) is in the range 0.75:1 to 1.5:1. In a preferred method a mixed dispersion containing titanium dioxide and zinc oxide, having E(308) at least 15 litres per gram per centimetre, E(360) at least 10 litres per gram per centimetre and the ratio E(360):E(308) in the range 0.3:1 to 1.5:1 is used. The mixed dispersion is also claimed. The sunscreens prepared have a good balance of absorption for UVA and UVB radiation and better SPF values than those prepared from titanium dioxide and/or zinc oxide ...

Producing highly-stable hydrophobic silicates

A process for the preparation of a hydrophobic (alumino) silicate or refractory oxide comprises contacting a hydrophilic hydrous (alumino) silicate or refractory oxide with at least one hydrolysable organisilicon compound present in the vapour phase.

Preparation of substantially polycrystalline silicon carbide fibres

Thermally stable, substantially polycrystalline silicon carbide ceramic fibers are prepared using borosilazane resins. The method comprises spinning fibers from the resin, infusibilizing the spun fibers and pyrolyzing the spun fibers at a temperature greater than about 1700‹C. The high temperature pyrolysis reduces oxygen and nitrogen content of the fibres and compacts and re-strengthens the fibres.

Silicone rubber compositions

Preparation of silicon carbide fibers

Silicon carbide fibers suitable for use in the fabrication of dense, high-strength, high-toughness SiC composites or as thermal insulating materials in oxidizing environments are fabricated by a method wherein a mixture of short-length rayon fibers and colloidal silica is homogenized in a water slurry. Water is removed from the mixture by drying in air at 120 DEG C and the fibers are carbonized by (pyrolysis) heating the mixture to 800-1000 DEG C in argon. The mixture is subsequently reacted at 1550-1900 DEG C in argon to yield pure ss-SiC fibers.

METHOD OF PRODUCING FERROMAGNETIC CHROMIUM DIOXIDES

... 1294294 Ferromagnetic chromium dioxide FUJI PHOTO FILM CO Ltd 12 Jan 1970 [12 Feb 1969] 1442/70 Heading C1A [Also in Division H1] Ferromagnetic CrO 2 is made by heating CrO 3 , with or without at least one additive capable of providing an element for incorporation into the crystal lattice of the final material to a temperature higher than 100‹ C. (e.g. 120-800‹ C.) under a pressure of less than one atmosphere, mixing the product with further CrO 3 and heating it above 150‹ C., e.g. 300-1000‹ C., at a pressure higher than atmospheric (e.g. 10-600 ats.). The additive may be an oxide, chloride or nitrate of Te, Sb, Pt, Fe, Co, Ni, Se, Li, Na, K, Be, Mg, Al, Ga, In, Ge, Sn, As, Cu, Zn, Sc, Ti, Zr, Nb or Mn. Examples describe the preparation of acicular ferromagnetic particles from CrO 3 containing TeO 2 , Sb 2 O 5 , H 2 (PtCl 6 ).6H 2 O, Nb 2 O 5 , LiCl FeCl 3 or TeO 2 /Sb 2 O 5 (1:1). The pressures used in the first stage of the process (preparation of seed particles) are 0À1-1 ats.

INORGANIC-ORGANO TITANATE COMPOSITIONS AND PROCESS FOR PROVIDING THE SAME

... 1307399 Coloured and magnetic films FREEPORT SULPHUR CO 5 Oct 1970 [30 Oct 1969 (2)] 47325/70 Heading B5B [Also in Divisions C1 C2 and C3] Films are made from polymeric compositions containing inorganic fillers which have been surface treated with organic titanium compounds. The exemplified polymer is polypropylene, and the filler clay (Example 13). The composition is pelletized and melt extruded to form a slightly yellow, translucent film which is then oriented (Examples 13, 14). A magnetic film may be made by incorporating iron powders or iron oxides in the composition, and extruding as above (Example 15). Films may also be made by pressing (Example XVI).

Improvements in Process for Growing alpha-Alumina Whiskers of the Long Wool Type

... 1,190,283. -Alumina whiskers. GENERAL ELECTRIC CO. 28 June, 1967 [29 Sept., 1966], No. 29846/67. Heading C1A. [Also in Division F4] Long-wool (i.e. averaging 1-10 Á diameter and 5-25 mm. in length) whiskers of -alumina are made by heating aluminium to 1290- 1400‹ C. in hydrogen in a reaction-chamber, at least the upper portion of which is made of a refractory containing the silica required for reaction with the aluminium, the resulting whiskers then being cooled. The reaction chamber is partially closed at least at one end, and may take the form of a semi-cylindrical alumina boat topped by a slip-cast semicylindrical refractory lid open at one flat. Specified refractories are kyanite, mullite, andalusite and a mixture of alumina, silica and trace oxides. The reaction may be effected in presence of sulphur, added as powder, or derived from hydrogen sulphide. Reaction may be carried out by enclosing the loaded reaction chamber in a furnace tube and heating it in flowing or static hydrogen ...

STABILIZATION OF MAGNETIC PIGMENTS USING HETEROCYCLIC NITROGEN COMPOUNDS

PREPARATION AND USE OF PARTICULATE METAL

... 1465908 Ethyl cellulose/metal flake paints DOW CHEMICAL CO 13 Dec 1973 [14 Dec 1972 24 Oct 1973 (2)] 57865/73 Heading C3F [Also in Division C7] A paint comprises metal platelets of a thickness up to 1000 Š and a size of the 5000 microns formed by coating a substrate with metal and then dissolving the substrate. Specific examples describe Al, isopropyl alcohol and ethylcellulose with or without xylene; Al, toluene, and ethylcellulose, with or without diethylbenzene; Al, toluene, and coloured lacquers. The platelets may also be of Mg, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, In, Cd, Pd, Ag, Rh, Ru, Mo, Nb, Zr, Y, La, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl or Pb.

MANUFACTURE OF ACICULAR COBALT-MODIFIED MAGNETIC IRON OXIDE

PROCESSES FOR PRODUCING FERROMAGNETIC CHROMIUM OXIDE MATERIALS

... 1317216 Chromium oxide material INTERNATIONAL BUSINESS MACHINES CORP 3 Sept 1970 [22 Dec 1969] 42098/70 Heading C1A [Also in Division H1] A ferromagnetic, crystalline chromium oxide material, in the form of acicular particles having a tetragonal crystal structure, and comprising 59 to 62% by wt. of chromium, 0À05 to 0À90% of carbon and the remainder oxygen is prepared by mixing a solution of a halogen containing chromium salt with an organic complexing agent for chromium ions which is not a polymer, does not polymerize when heated, and does not contain amino groups, to form a complex, forming an intimate mix of the complex and chromium trioxide, and then heating this mixture at a temperature within the range from 250‹ to 500‹ C. and at a pressure greater than 500 atmospheres. The preferred complexing agents are phthalic acid, benzoic acid, tetrachlorophthalic acid, pyromellitic acid, trimellitic acid, an anhydride of any one of these acids, or -hydroxy quinoline. The chromium salt is preferably ...

METHOD OF MAKING FIBROUS ALKALI METAL TITANATES

... 1485398 Fibrous alkali metal titanates MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 22 Nov 1974 50694/74 Heading C1A Fibrous alkali metal titanates are prepared by melting a mixture of a titanium compound and an alkali metal compound at a temperature by at least 1000‹ C., cooling the product to form a glassy material which is crushed to powder and treated in an autoclave with aqueous solution at temperatures of at least 350‹ C. The molar ratio of M 2 O to TiO 2 should suitably be at least 1. Seeding with fibrous alkali metal titanate improves the yield rate. In the examples, TiO 2 and K 2 CO 3 are heated to give a glassy material and the powdered product is heated in an autoclave with either water or aqueous solutions of 0À5 N KOH, NaOH, CsOH or RbOH. In Example 4, Na 2 CO 3 is used instead of K 2 CO 3 . The resulting fibrous alkali metal titanate has an average diameter of <10 Ám and a length/ diameter ratio of >5.

INORGANIC FIBRES

... 1526165 Fibre reinforced resins and foams thereof SUDDEUTSCHE KALKSTICKSTOFFWERKE AG 10 May 1977 [14 May 1976] 19527/77 Headings C3B C3R and C3C [Also in Divisions C1 and D2] Calcium sulphate or calcium sulphate aluminate dihydrate fibres having a length : diameter ratio of more than 100 : 1 and a length of at least 0À2 mm. are used to reinforce methacrylate resins (Example 11) polyesters (Example 12) epoxide resins or sulphonated melamine-formaldehyde condensates (Example 13). The hydrated fibres may also be used as a blowing agent and in Example 17 they are mixed with epoxide resins and heated, the escaping water of crystallization expanding the resin mass to four times its initial volume.

PROCEDURE FOR THE PRODUCTION OF INORGANIC FIBERS ON BASIS OF CALCIUM SULFATE

KONTAKTUND OF ADSORBENT GRANULATES

VERFAHREN ZUR HERSTELLUNG EINER MODIFIZIERTEN CHROMDIOXIDZUSAMMENSETZUNG

VERFAHREN ZUR HERSTELLUNG VON ROHSTOFF-BRIKETTS FUER DIE ERZEUGUNG VON SILICIUM ODER VON SILICIUMCARBID ODER VON FERROSILICIUM UND ANLAGE FUER DIE DURCHFUEHRUNG DES VERFAHRENS

PROCEDURE FOR THE PRODUCTION OF RAW MATERIAL BRIQUETTES FOR THE PRODUCTION OF SILICON OR OF SILICON CARBIDE OR OF FERROSILICON AND PLANT FOR THE EXECUTION OF THE PROCEDURE

PROCEDURE FOR THE PRODUCTION OF FASERFOERMIGEM MAGNESIUM OXIDE

GLASSLIKE SILICON DIOXIDE PRODUCTS

TAFELFOERMIGE GYPSUM NEEDLES AND PROCEDURES FOR THE FUELLEN OF PAPER.

WATER AND SOLID RECUPERATION IN A PAPER MILL

TREATMENT OF TRANSITION METALS CONTAINING ONE PIGMENTS OF MEANS OF CHELIERENDER OR SILYLIERENDER CONNECTIONS

PROCEDURE FOR THE PRODUCTION OF FIBERS

PROCEDURE FOR THE PRODUCTION OF POLLUTION FREE OF WASSERUNLOSLICHER SULFATE/CSULFITE CONNECTIONS OF THE SODIUM OR AMMONIUM

PROCEDURE FOR THE PRODUCTION OF NANO-PARTICLES FROM COPPER CONNECTIONS

PRECIPITATION SILICIC ACID

PIGMENTÄRES MATERIAL

Tetragonal zirconium oxide fiber or - textilie

Procedure for the production of fibers, which contain a boron and nitrogen a containing connection as a substantial component

METALLIC OXIDE DISPERSION

PROCEDURE FOR THE TREATMENT OF WASTE SUSPENSIONS

IMPROVEMENTS IN OR RELATING TO MAGNETITE PIGMENTS

ALUMINIUM NITRIDE/ALUMINIUM OXYNITRIDE/GROUP IVB METAL NITRIDE ABRASIVE PARTICLES DERIVED FROM A SOL-GEL PROCESS

MICROCRYSTALLINE TRANSITION METAL OXIDE SPINEL ARTICLES

Organic inorganic composite powder, process for producing the same and composition containing the powder

Adsorption container and iron oxide adsorber

Alumina particles and methods of making the same

Surface-treating agent, surface-treated powder, and cosmetic preparation containing same

Multi-metal oxide containing silver, vanadium and one or several elements of thephosphorous group and use thereof

Precipitated silica

Rutile titanium dioxide nanoparticles and ordered acicular aggregates of same

Ordered acicular aggregates of elongated TiO ...

RECOVERING SILICON CARBIDE WHISKERS

PREPARING FIBROUS ALKALI METAL TITANATE

Process for producing calcium carbonate

SUBMICRONMETAL OXIDE PARTICLES

Ultraviolet shielding composite fine particles, method for producing the same, and cosmetics

Contacting and adsorbent granules

SILANE COATED SILICATE MINERALS

FLAME RETARDANT COMPOSITES

PROCESS FOR PRODUCING ACICULAR PARTICLES CONTAINING AN IRON CARBIDE

PROCESS FOR PREPARING FERROMAGNETIC CHROMIUM DIOXIDE

COUPLING AGENTS

COMPOSITIONS COMPRISING INORGANIC METAL COMPOUNDS AND WATER-SOLUBLE ORGANIC SILICONE COMPOUNDS

FIBROUS MAGNESIUM OXIDE AND PROCESS FOR PRODUCTION THEREOF

ALUMINA PARTICLES AND METHODS OF MAKING THE SAME

Alumina particles and compositions containing alumina particles are discl osed. Methods of making alumina particles and methods of using alumina parti cles are also disclosed.

ALUMINUM NITRIDE/ALUMINUM OXYNITRIDE/GROUP IVB METAL NITRIDE ABRASIVE PARTICLES DERIVED FROM A SOL-GEL PROCESS

A multiphase, microcrystalline, nearly fully dense ceramic composite has grains comprising 0 to 95 volume percent aluminum nitride, 0 to 95 volume percent polytypes of aluminum nitricle, 0 to 95 volume percent gamma-aluminum oxynitride, and 5 to 50 volume percent of at least one of titanium nitride, zirconium nitride and hafnium nitride. The composite is useful to prepare a ceramic abrasive grit or article.

SILICON CARBIDE FIBERS HAVING A HIGH STRENGTH AND A METHOD FOR PRODUCING SAID FIBERS

A method for producing a silicon carbide fiber having a high tensile strength which consists of:(1) subjecting a polysilane having an Si-Si bond and no halogen atoms to polycondensation reaction by at least one process of addition of a polycondensation catalyst, irradiation and heating to produce a polycarbosilane containing no halogen atoms,(2) reducing the content of low molecular weight compound contained in said polycarbosilane by treating said polycarbosilane with at least one treatment selected from the group of treatments consisting of contacting said polycarbosilane with a suitable solvent, aging said polycarbosilane at a temperature of 50.degree.-700.degree. C and distilling said polycarbosilane at a temperature of 100.degree.-500.degree. C, to produce a polycarbosilane product having a softening point of higher than 50.degree. C,(3) dissolving said polycarbosilane product in a solvent or melting said polycarbosilane product to prepare spinning solution or spinning melt, and spinning ...

METHOD FOR THE PREPARATION OF FERROMAGNETIC CHROMIUM DIOXIDE

PROCESS AND APPARATUS FOR THE PRODUCTION OF GREEN BRIQUETTES FOR THE FORMATION OF SILICON, SILICON CARBIDE OR FERROSILICON

A process and apparatus for the preparation of green briquettes for the production of silicon or silicon carbide or ferrosilicon in electric pit furnaces, quartz sand, a carbon carrier and a bituminous binder being mixed together, the mixture being shaped into blanks from which the green briquettes are formed by heat treatment. The process is performed with the use of blanks which are free from melted bituminous caking coal and whose specific weight is made greater than the bulk density of quartz sand by adjustment of the proportions of the mixture and by compacting. The blanks are introduced for the heat treatment into a heated rotating drum furnace whose lower part is filled with quartz sand to an extent such that the heat treatment proceeds in a dip bed of quartz sand.

PROCESS OF PRODUCING NEEDLE-SHAPED CALCIUM CARBONATE PARTICLES

Disclosed is a novel process of producing needle-shaped calcium carbonate particles. In the process of the present invention, aqueous calcium hydroxide solution is added to an aqueous medium bath with a temperature of not less than 60.degree.C into which carbon dioxide gas or a carbon dioxide-containing gas is being blown to generate needle-shaped calcium carbonate particles. The temperature of the aqueous medium bath is kept not less than 60.degree.C during the addition of the aqueous calcium hydroxide solution. Then the generated needle-shaped calcium carbonate particles are recovered.

FERRIMAGNETIC SPINEL FIBERS

This invention provides a process for the preparation of ferrimagnetic spinel fibers composed of crystallites corresponding to the formula: MlFe2O4 where M is a divalent metal such as manganese iron, cobalt, nickel, copper, zinc, cadmium, magnesium, barium, strontium, or any combination thereof.

SYNTHETIC GAMMA FERRIC OXIDE

Process for production of magnetic thin film, magnetic thin film, and magnetic material

The present invention provides a process for production of a magnetic thin film which has insulation properties, serves as a permanent magnet, and has improved residual magnetization in comparison with prior arts, the magnetic thin film, and a magnetic material. When a magnetic thin film 3 is formed, an external magnetic field with a predetermined intensity is applied to a coating liquid containing magnetic particles containing epsilon-type iron-oxide-based compounds which have insulation properties and which serve as a permanent magnet, and the coating liquid is let cured in order to form the magnetic thin film 3 . Accordingly, the magnetic particles containing the epsilon-type iron-oxide-based compounds can be fixed while being oriented regularly in a magnetization direction. This realizes the process for production of the magnetic thin film 3 which has insulation properties and which serve as a permanent magnet, the magnetic thin film 3 , and a magnetic material 1.

H4v3o8, a new vanadium(iv) oxide electroactive material for aqueous and non aqueous batteries

A new electroactive material of formula H 4 V 3 O 8 obtainable from H 2 V 3 O 8 is described as well as a method for its production, an electroactive cathode coating material comprising this electroactive material, a method for its production and cathodes as well as aqueous and non aqueous, rechargeable and non rechargeable batteries comprising such cathodes.

Method of producing anode material and the anode materials thereof

The present invention provides a method of producing anode material, and the steps are as follows: TiO 2 and NaOH are in the hydrothermal reaction to generate a fibered precursor; acid pickling the fibered precursor to generate a fibered sodium hydroxo titanate (H 2 Ti 3 O 7 .5H 2 O); disposing the fibered sodium hydroxo titanate on a membrane to dry, and thus to generate a flexible sodium hydroxo titanate membrane; and the flexible sodium hydroxotitanate membrane is reacted with NH 3 flow to generate a titanium oxynitride membrane.

Process for obtaining precipitated calcium carbonate

The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH) 2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH) 2 , based upon moles of Ca(OH) 2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH) 2 in the presence of 0.5 to 5% by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.

Morphologically and size uniform monodisperse particles and their shape-directed self-assembly

Monodisperse particles having: a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology are disclosed. Due to their uniform size and shape, the monodisperse particles self assemble into superlattices. The particles may be luminescent particles such as down-converting phosphor particles and up-converting phosphors. The monodisperse particles of the invention have a rare earth-containing lattice which in one embodiment may be an yttrium-containing lattice or in another may be a lanthanide-containing lattice. The monodisperse particles may have different optical properties based on their composition, their size, and/or their morphology (or shape). Also disclosed is a combination of at least two types of monodisperse particles, where each type is a plurality of monodisperse particles having a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology; and where the types of monodisperse particles differ from one another by composition, by size, or by morphology. In a preferred embodiment, the types of monodisperse particles have the same composition but different morphologies. Methods of making and methods of using the monodisperse particles are disclosed.

Multiplexed spectral lifetime detection of phosphors

New methods and assays for multiplexed detection of analytes using phosphors that are uniform in morphology, size, and composition based on their unique optical lifetime signatures are described herein. The described assays and methods can be used for imaging or detection of multiple unique chemical or biological markers simultaneously in a single assay readout.

MULTIPLEXED SPECTRAL LIFETIME DETECTION OF PHOSPHORS

New methods and assays for multiplexed detection of analytes using phosphors that are uniform in morphology, size, and composition based on their unique optical lifetime signatures are described herein. The described assays and methods can be used for imaging or detection of multiple unique chemical or biological markers simultaneously in a single assay readout. 1. A method for detecting an analyte in a sample , comprising the steps of:(a) contacting the sample with a phosphor particle, wherein the phosphor particle is conjugated to a capture molecule specific for an analyte of interest, to bind and label the analyte of interest; and(b) detecting the labelled analyte by the unique optical lifetime signature of the phosphor particle;wherein the phosphor particle conjugated to the capture molecule has a unique optical lifetime signature and uniform morphology, size, and/or composition.2. The method of claim 1 , wherein the detecting step is performed in a single readout.3. The method of claim 1 , further comprising claim 1 , before step (a) claim 1 , the step of capturing the analyte on an analyte-specific capture molecule attached to a substrate.4. The method of claim 1 , wherein the phosphor particle is an up-converting phosphor particle comprising at least one rare earth element and a phosphor host material.5. The method of claim 1 , wherein the phosphor particle is monodispersed.6. The method of claim 1 , wherein the method is cell sorting method and the analyte of interest is a cell.7. The method of claim 1 , wherein the method is used in flow cytometry.8. The method of claim 1 , wherein the phosphor particle is about 30 nm to about 400 nm in size.9. The method of claim 1 , wherein the sample comprises a bodily fluid.10. The method of claim 9 , wherein the sample comprises blood serum claim 9 , saliva claim 9 , tissue fluid claim 9 , or urine.11. An assay kit for detecting an analyte in a sample claim 9 , comprising a phosphor particle conjugated to a capture ...

Method of producing sulfide compound semiconductor by use of solvothermal method and rod-like crystal of sulfide compound semiconductor

The present invention provides a method of producing a sulfide compound semiconductor containing Cu, Zn, Sn and S, in which the method includes a solvothermal step of conducting a solvothermal reaction of Cu, Zn, Sn and S in an organic solvent, and a rod-like crystal of sulfide compound semiconductor containing Cu, Zn, Sn and S.

ELECTROMAGNETIC WAVE ABSORBING PARTICLE DISPERSOID AND ELECTROMAGNETIC WAVE ABSORBING LAMINATED TRANSPARENT BASE MATERIAL

An electromagnetic wave absorbing laminated transparent base material includes a plurality of sheets of transparent base materials; and an electromagnetic wave absorbing particle dispersoid including at least electromagnetic wave absorbing particles and a thermoplastic resin. The electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency. The tungsten bronze is expressed by a general formula: MWO(where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0 Подробнее

Molybdenum sulfide, method for producing same, and hydrogen generation catalyst

Provided is a molybdenum sulfide that is ribbon-shaped and particularly suitable for a hydrogen generation catalyst. Disclosed are a ribbon-shaped molybdenum sulfide, in which 50 particles as measured by observation with a scanning electron microscope (SEM) have a shape of, on average, 500 to 10000 nm in length, 10 to 1000 nm in width, and 3 to 200 nm in thickness; a method for producing the ribbon-shaped molybdenum sulfide, including: (1) heating a molybdenum oxide at a temperature of 200 to 1000° C. in the presence of a sulfur source; or (2) heating a molybdenum oxide at a temperature of 100 to 800° C. in the absence of a sulfur source, and then heating the molybdenum oxide at a temperature of 200 to 1000° C. in the presence of a sulfur source; and a hydrogen generation catalyst including the ribbon-shaped molybdenum sulfide.

Fibrous Structured Amorphous Silica Including Precipitated Calcium Carbonate and Compositions of Matter Made Therewith

A nano-composite structure. A synthetic nano-composite is described having a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation. The nano-composite may be useful for fillers in paints and coatings. Also, the nano-composite may be useful in coatings used in the manufacture of paper products. 1. A coating composition for coating paper , paperboard , or label stock , said coating composition comprising a water slurry including(a) a nano-composite material, said nano-composite material comprising an amorphous silica component, said amorphous silica component provided in three-dimensional haystack or globular configuration that presents a structure having interstitial spaces between amorphous silica structures with inner layers and outer layers with irregular interlacing amorphous silica structures or filaments which are fixed in relation to each other, and a crystalline calcium carbonate component, said crystalline calcium carbonate component comprising nano aragonite needle structures, said nano aragonite needle structures arising from said amorphous silica component, said nano-composite material having a major axis of length L in the range from 10 microns to 40 microns and a surface area of from 40 meters squared per gram to 200 meters squared per gram;(b) clay; and(c) wherein said coating composition, after mixing, passes through a screen of selected size.2. The coating composition as set forth in wherein said nano aragonite needle structures comprise aragonite crystals having a length of from 1 micron to 10 microns.3. The coating composition as set forth in claim 2 , wherein said nano aragonite crystals have a length of from 3 microns to 5 microns.4. The coating composition as set forth in claim 1 , wherein said nano aragonite needle structures comprise aragonite crystals having a diameter of from 100 nm to 200 nm.5. The coating ...

Novel carbon nanofiber and method of manufacture

A method of producing carbon nanofibers is disclosed that substantially impacts the carbon nanofibers' chemical and physical properties. Such carbon nanofibers include a semi-graphitic carbon material characterized by wavy graphite planes ranging from 0.1 nm to 1 nm and oriented parallel to an axis of a respective carbon nanofiber, the semi-graphitic carbon material also being characterized by an inclusion of 4 to 10 atomic percent of nitrogen heteroatoms, the nitrogen heteroatoms including a combined percentage of quaternary and pyridinic nitrogen groups equal to or greater than 60% of the nitrogen heteroatoms. The method of manufacture includes, for example, preparing a Polyacrylonitrile (PAN) based precursor solution, providing the PAN-based precursor solution to a spinneret and then performing an electro-spinning operation on the PAN-based precursor solution to create the one or more PAN-based nanofibers. The electro-spinning operation includes passing the PAN-based precursor solution from the spinneret to a collector at a distance between 1 cm to 30 cm while providing an Alternating Current (AC) voltage between the spinneret and the collector, the AC voltage including a frequency ranging from 20 Hz to 100,000 Hz and either a Peak-to-Peak (P-P) voltage ranging from 100 V to 30,000 V or a Root-Mean-Square (RMS) voltage ranging from 100 V to 30,000 V. Afterwards, post-electro-spinning operations, stabilizing treatments and pyrolysis treatments are performed. 1. A method of producing one or more carbon nanofibers , the carbon nanofibers including a semi-graphitic carbon material characterized by wavy graphite planes ranging from 0.1 nm to 1 nm and oriented parallel to an axis of a respective carbon nanofiber , the semi-graphitic carbon material also being characterized by an inclusion of 4 to 10 atomic percent of nitrogen heteroatoms , the nitrogen heteroatoms including a combined percentage of quaternary and pyridinic nitrogen groups equal to or greater than 60% ...

METHOD FOR FORMING A COMPOSITE HAVING SEMICONDUCTOR STRUCTURES INCLUDING A NANOCRYSTALLINE CORE AND SHELL EMBEDDED IN A MATRIX

Semiconductor structures having a nanocrystalline core and corresponding nanocrystalline shell and insulator coating, wherein the semiconductor structure includes an anisotropic nanocrystalline core composed of a first semiconductor material, and an anisotropic nanocrystalline shell composed of a second, different, semiconductor material surrounding the anisotropic nanocrystalline core. The anisotropic nanocrystalline core and the anisotropic nanocrystalline shell form a quantum dot. An insulator layer encapsulates the nanocrystalline shell and anisotropic nanocrystalline core. 1. A lighting apparatus , comprising:a light emitting diode; anda composite coating the light emitting diode, the composite comprising a matrix material; and a quantum dot comprising a nanocrystalline core comprising a first semiconductor material and a nanocrystalline shell comprising a second, different, semiconductor material at least partially surrounding the nanocrystalline core, the quantum dot having a photoluminescence quantum yield (PLQY) of at least 90%; and', 'an insulator layer encapsulating the quantum dot., 'a plurality of semiconductor structures embedded in the matrix material, each semiconductor structure comprising2. The lighting apparatus of claim 1 , wherein emission from each quantum dot is mostly claim 1 , or entirely claim 1 , from the nanocrystalline core.3. The lighting apparatus of claim 2 , wherein emission from the nanocrystalline core is at least approximately 75% of the total emission from the quantum dot.4. The lighting apparatus of claim 1 , wherein an absorption spectrum and an emission spectrum of each quantum dot are essentially non-overlapping.5. The lighting apparatus of claim 1 , wherein an absorbance ratio of each quantum dot for absorbance at 400 nanometers versus absorbance at an exciton peak for the quantum dot is approximately in the range of 5-35.6. The lighting apparatus of claim 1 , wherein each quantum dot is a down-converting quantum dot.7. The ...

Ferromagnetic hexagonal ferrite powder, method of manufacturing the same, and magnetic recording medium

An aspect of the present invention relates to ferromagnetic hexagonal ferrite powder, the average particle size of which is equal to or less than 20 nm, and which comprises, on a particle number basis, equal to or more than 50% of ellipsoid hexagonal ferrite powders satisfying relation (1): 1.2<major axis length/minor axis length<2.0 . . . (1).

MORPHOLOGICALLY AND SIZE UNIFORM MONODISPERSE PARTICLES AND THEIR SHAPE-DIRECTED SELF-ASSEMBLY

Monodisperse particles having: a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology are disclosed. Due to their uniform size and shape, the monodisperse particles self assemble into superlattices. The particles may be luminescent particles such as down-converting phosphor particles and up-converting phosphors. The monodisperse particles of the invention have a rare earth-containing lattice which in one embodiment may be an yttrium-containing lattice or in another may be a lanthanide-containing lattice. The monodisperse particles may have different optical properties based on their composition, their size, and/or their morphology (or shape). Also disclosed is a combination of at least two types of monodisperse particles, where each type is a plurality of monodisperse particles having a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology; and where the types of monodisperse particles differ from one another by composition, by size, or by morphology. In a preferred embodiment, the types of monodisperse particles have the same composition but different morphologies. Methods of making and methods of using the monodisperse particles are disclosed. 1. A plurality of monodisperse particles , the particles each having:a single pure crystalline phase of a rare earth-containing lattice,a uniform three-dimensional size, anda uniform polyhedral morphology.2. The plurality of monodisperse particles of claim 1 , wherein the particles are down-converting phosphor particles.3. The plurality of monodisperse particles of claim 1 , wherein the particles are up-converting phosphors.4. The plurality of monodisperse particles of claim 1 , wherein the rare earth-containing lattice is an yttrium-containing lattice.5. The plurality of monodisperse particles of claim 4 , wherein the yttrium-containing lattice is selected from ...

A Method For Producing An Activated Nesquehonite

A method for producing an activated nesquehonite includes activating one or more nesquehonites by heating. The one or more nesquehonites may be formed by the reaction of carbon dioxide with aqueous magnesium ions at elevated pH, and may include barringtonite, nesquehonite, dypingite, hydromagnesite, and/or artinite and/or lansfordite. The activated nesquehonite may be useful in a building material, and have advantageous cementitious properties.

Filler composition

A filler composition comprising fibrous basic magnesium sulfate particles and non-fibrous inorganic micro-particles having an average particle diameter in the range of 0.001 to 0.5 μm in a ratio by weight in the range of 100:0.001 to 100:50, is used for providing a molded resin product which shows impact resistance and rigidity balanced at a high level.

Silica fiber compositions and methods of use

Embodiments of the invention include silica fiber compositions useful for treatment of animal wounds and tissue, as well as for other applications in industry. The fiber compositions may be formed via electrospinning of a sol gel produced with a silicon alkoxide reagent, such as tetraethyl ortho silicate, alcohol solvent, and an acid catalyst.

METHOD FOR PRODUCING FIBERS AND FOAMS CONTAINING SILICON CARBIDE, AND USE THEREOF

The present invention relates to a method for producing silicon carbide-containing fibers or silicon carbide-containing nano- and/or micro-structured foams, and to the use thereof, in particular as anode materials for lithium-ion storage batteries. 1. Method for producing silicon carbide-containing fibers or silicon carbide-containing nano- and/or microstructured foams ,characterized in that(a) introducing precursors containing at least one carbon source and at least one silicon source a first temperature zone, of a reactor heated to temperatures in the range from 1,300 to 2,100° C. so that the precursors are decomposed, and(b) depositing in a second temperature zone; of the reactor, silicon carbide-containing fibers and/or silicon carbide-containing nano- or microstructured foams on a substrate.2. Method according to claim 1 , the silicon carbide-containing fibers and the silicon carbide-containing nano- and/or micro-structured foams include doped nanocrystalline silicon carbide.3. Method according to claim 1 , wherein the silicon carbide-containing fibers and the silicon carbide-containing nano- or micro-structured foams consist of non-stoichiometric silicon carbide or silicon carbide alloys.4. Method according to wherein a temperature gradient is present in the reactor between the first and the second temperature zones of the reactor.5. Method according to claim 1 , wherein the temperature is lower in the second temperature zone of the reactor than in the first temperature zone of the reactor.6. Method according to claim 5 , wherein the temperature in the second temperature zone of the reactor is set to a temperature lower than in the first temperature zone of the reactor wherein the temperature set lower is selected from the group consisting of at least 30° C. lower claim 5 , at least 40° C. lower claim 5 , and at least 50° C. lower.7. Method according to claim 1 , wherein the precursors are carbon and silicon sources having a form selected from the group ...

METHOD FOR REMOVING RADIOACTIVE ELEMENT THORIUM IN RARE EARTH MINERAL

The present invention relates to a method for removing radioactive element thorium in a rare earth mineral, comprising: mixing the rare earth mineral with selenium dioxide in water, reacting radioactive element thorium with selenium dioxide by hydrothermal method, cooling to form a crystal, and separating the crystal to remove the radioactive element thorium. In the invention, tetravalent element thorium is selectively bound to inorganic ligand selenium dioxide in a hydrothermal environment to form a crystal, thereby achieving removal of radioactive element thorium. The method has high crystallization rate and high decontamination efficiency, and removes thorium from trivalent lanthanide element by crystallization solidification under a uniform reaction condition. Compared to a conventional industrial method for thorium separation, the method has low energy consumption and high separation ratio, enables one-step solidification separation, and effectively avoids the disadvantages of redundant separation operations and a large amount of organic and radioactive liquid wastes. 1. A method for removing radioactive element thorium in a rare earth mineral , comprising steps of:mixing the rare earth mineral with selenium dioxide in water,reacting radioactive element thorium in the rare earth mineral with selenium dioxide by a hydrothermal method,cooling the resulting solution to form a crystal, andseparating the crystal to remove the radioactive element thorium.2. The method as claimed in claim 1 , wherein the rare earth mineral comprises a lanthanide element and/or actinide element.3. The method as claimed in claim 2 , wherein a molar ratio of the lanthanide element and/or actinide element to selenium dioxide is 1: 2-10.4. The method as claimed in claim 1 , wherein the hydrothermal method includes performing the reaction at 200-230° C. for 1-3 days.5. The method as claimed in claim 1 , wherein the resulting solution is cooled to room temperature after the reaction is ...

ACTIVATED CARBON AND METHOD FOR MANUFACTURING SAME

The present invention relates to an activated carbon and a method for manufacturing same and, more specifically, to: an activated carbon containing micropores and mesopores, wherein a micropore volume per unit mass is 0.9 cm/g or less and a volume fraction of pores having a diameter of 5 Å or more in the micropore volume per unit mass is 50% or more; and a method for manufacturing same. 1. An activated carbon comprising micropores and mesopores , wherein the activated carbon has a micropore volume per unit mass of 0.9 cm/g or less and a volume fraction of pores having a diameter of 5 Å or more in the micropore volume per unit mass of 50% or more.2. The activated carbon of claim 1 , wherein the activated carbon has a mesopore volume per unit mass of 0.1 cm/g or more.3. The activated carbon of claim 1 , wherein the activated carbon has a mesopore volume per unit mass of 0.13 cm/g or more.4. The activated carbon of claim 1 , wherein the activated carbon has a volume fraction of pores having a diameter of 30 Å or less in the mesopore volume per unit mass of 60% or more.5. The activated carbon of claim 1 , wherein the activated carbon has a specific surface area (BET) of 500 m/g to 4 claim 1 ,200 m/g.6. The activated carbon of claim 1 , wherein the activated carbon has a volume ratio of micropores to the total pores of 0.65 to 0.95.7. The activated carbon of claim 1 , wherein the activated carbon has a shape of at least one of a tube claim 1 , a rod claim 1 , a wire claim 1 , a sheet claim 1 , a fiber claim 1 , and a particle.8. The activated carbon of claim 1 , wherein the activated carbon is activated and manufactured under conditions according to the following Equation 1:{'br': None, '6<σ<9\u2003\u2003[Equation 1]'}σ=0.05 T+M+0.25 H (herein, T: activation temperature (° C.), M: weight of an activation agent/weight of a carbon material (g), H: holding time (hr)).9. A method for manufacturing an activated carbon claim 1 , the method comprising:preparing a carbon ...

Process for the Production of Graphene Nanoribbons

The invention refers to a process for the production of graphene nanoribbons in the presence of an anisotropic metal surface which induces a spatial orientation of the nanoribbons.

Process for obtaining precipitated calcium carbonate

The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH) 2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH) 2 , based upon moles of Ca(OH) 2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH) 2 in the presence of 0.5 to 5% by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.

METHOD FOR PRODUCING OXYGEN SENSOR

A production method for producing an oxygen sensor, includes spinning a precursor consisting of a salt of at least one metal chosen from Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Yb, Sr, Ba, Mn, Co, Mg, and Ga, a solvent, and a macromolecular polymer to produce nanofibers of the precursor containing the salt of the metal. The method further includes calcining the nanofibers of the precursor at a temperature ranging from 550° C. to 650° C. for 2 to 4 hours, and making a solid electrolyte material composed of the nanofibers obtained from the calcining. The resulting solid electrolyte material constitutes a part of the oxygen sensor. 18.-. (canceled)9. A method for producing an oxygen sensor , the method comprising:spinning a compound precursor consisting of a salt of at least one metal selected from Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Yb, Sr, Ba, Mn, Co, Mg and Ga, a solvent, and a macromolecular polymer to produce nanofibers of the precursor containing the salt of the metal;calcining the nanofibers of the precursor containing the salt of the metal at a temperature ranging from 550° C. to 650° C. for 2 to 4 hours, to obtain nanofibers of metal oxide containing the at least one metal,making a solid electrolyte material composed of the nanofibers obtained from the calcining, andproducing a part of the oxygen sensor from the solid electrolyte material.10. The method according to claim 9 , wherein the metal oxide is a metal oxide of at least one metal chosen from Sc claim 9 , Y claim 9 , La claim 9 , Ce claim 9 , Pr claim 9 , Nd claim 9 , Sm claim 9 , and Gd.11. The method according to claim 9 , wherein the nanofibers of the precursor containing the salt of the metal are prepared by electrospinning or liquid phase spinning method.12. The method according to claim 9 , wherein the metal oxide is a metal oxide of at least two metal elements chosen from Sc claim 9 , Y claim 9 , La claim 9 , Ce claim 9 , Pr claim 9 , Nd claim 9 , Sm claim 9 , Gd claim 9 , Dy claim 9 , Ho claim ...

NOVEL CARBON NANOFIBER AND METHOD OF MANUFACTURE

A method of producing carbon nanofibers is disclosed that substantially impacts the carbon nanofibers' chemical and physical properties. Such carbon nanofibers include a semi-graphitic carbon material characterized by wavy graphite planes ranging from 0.1 nm to 1 nm and oriented parallel to an axis of a respective carbon nanofiber, the semi-graphitic carbon material also being characterized by an inclusion of 4 to 10 atomic percent of nitrogen heteroatoms, the nitrogen heteroatoms including a combined percentage of quaternary and pyridinic nitrogen groups equal to or greater than 60% of the nitrogen heteroatoms. The method of manufacture includes, for example, preparing a Polyacrylonitrile (PAN) based precursor solution, providing the PAN-based precursor solution to a spinneret and then performing an electro-spinning operation on the PAN-based precursor solution to create the one or more PAN-based nanofibers. The electro-spinning operation includes passing the PAN-based precursor solution from the spinneret to a collector at a distance between 1 cm to 30 cm while providing an Alternating Current (AC) voltage between the spinneret and the collector, the AC voltage including a frequency ranging from 20 Hz to 100,000 Hz and either a Peak-to-Peak (P-P) voltage ranging from 100 V to 30,000 V or a Root-Mean-Square (RMS) voltage ranging from 100 V to 30,000 V. Afterwards, post-electro-spinning operations, stabilizing treatments and pyrolysis treatments are performed. 1. A method of producing one or more carbon nanofibers , the carbon nanofibers including a semi-graphitic carbon material characterized by wavy graphite planes ranging from 0.1 nm to 1 nm and oriented parallel to an axis of a respective carbon nanofiber , the semi-graphitic carbon material also being characterized by an inclusion of 4 to 10 atomic percent of nitrogen heteroatoms , the nitrogen heteroatoms including a combined percentage of quaternary and pyridinic nitrogen groups equal to or greater than 60% ...

FILLING MATERIAL, RESIN COMPOSITION, PACKAGE, LIGHT-EMITTING DEVICE, AND METHODS OF MANUFACTURING SAME

A filling material for a resin composition includes a base material and a coating material coating at least a portion of a surface of a particle of the base material. The base material comprises a first inorganic compound containing a Group II element. The coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound. A method of manufacturing the filling material is provided. A resin composition comprising the filling material, a package, a light-emitting device, and methods of manufacturing them are also provided. 1. A filling material comprising:a base material, wherein the base material comprises a first inorganic compound containing a Group II element, anda coating material coating at least a portion of a surface of a particle of the base material, wherein the coating material comprises a second inorganic compound containing the Group II element and is different from the first inorganic compound.2. The filling material of claim 1 , wherein the second inorganic compound is selected from the group consisting of a fluoride including the Group II element claim 1 , a phosphate including the Group II element claim 1 , and a sulfate including the Group II element.3. The filling material of claim 1 , wherein the base material and the coating material have an interface therebetween including at least a portion through which the base material and the coating material are continuously formed.4. The filling material of claim 1 , wherein the Group II element is Ca or Mg.5. The filling material of claim 1 , wherein the first inorganic compound is calcium silicate.6. The filling material of claim 1 , wherein the first inorganic compound is wollastonite.7. The filling material of claim 1 , wherein the base material is a fibrous material having an average fiber diameter of 0.1 μm to 15 μm claim 1 , an average fiber length of 1 μm to 100 μm claim 1 , and an average aspect ratio of 3 or more.8. The ...

Ordered stacked sheets of layered inorganic compounds, nanostructures comprising them, processes for their preparation and uses thereof

Provided is a nanostructure including ordered stacked sheets and processes for its preparation and use.

Fibrous Structured Amorphous Silica Including Precipitated Calcium Carbonate and Compositions of Matter Made Therewith

A nano-composite structure. A synthetic nano-composite is described having a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation. The nano-composite may be useful for fillers in paints and coatings. Also, the nano-composite may be useful in coatings used in the manufacture of paper products. 1. A composition of matter , comprising: (a) a fibrous amorphous silica component, said fibrous amorphous silica component provided in three-dimensional haystack configuration that presents a fibrous structure having interstitial spaces between amorphous silica fibers with inner layers and outer layers with irregular interlacing amorphous silica fibers or filaments which are fixed in relation to each other;', '(b) a crystalline calcium carbonate component, said crystalline calcium carbonate component comprising aragonite needle structures, said aragonite needle structures arising from said fibrous amorphous silica component; and', '(c) wherein said nano-composite structure has a major axis of length L in the range from about 10 microns to about 40 microns, and a surface area of from about 40 meters squared per gram to about 200 meters squared per gram., 'a nano-composite structure having'}2. The composition of matter as set forth in wherein said amorphous silica fibers have a length of from about 3 microns to about 4 microns.3. The composition of matter as set forth in claim 1 , wherein said amorphous silica fibers have a diameter of about 10 nm.4. The composition of matter as set forth in claim 1 , wherein said amorphous silica fibers have an aspect ratio of from about 50:1 to about 100:1.5. The composition of matter as set forth in wherein said aragonite needle structures comprise aragonite crystals having a length of from about 1 micron to about 10 microns.6. The composition of matter as set forth in claim 5 , wherein said aragonite crystals ...

ELECTROMAGNETIC-WAVE-ABSORBING PARTICLES, ELECTROMAGNETIC-WAVE-ABSORBING PARTICLE DISPERSION LIQUIDS, AND MANUFACTURING METHODS OF ELECTROMAGNETIC-WAVE-ABSORBING PARTICLES

Electromagnetic wave absorbing particles are provided that include hexagonal tungsten bronze having oxygen deficiency, wherein the tungsten bronze is expressed by a general formula: MWO(where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15≤x≤0.33, and 0 Подробнее

Semi-Tubular Carbon Film for Stable Lithium Metal Anodes and Methods of Manufacture Thereof

A method of forming a battery electrode by forming, on a first substrate, a polymer template comprising interconnected polymer fibers, forming, on the polymer template, a carbon coating to form a carbon-coated polymer template, removing the carbon-coated polymer template from the first substrate, subsequent to removing the carbon-coated polymer template from the first substrate, removing the polymer template from the carbon coating, and disposing the carbon coating on a second substrate. A solid electrolyte interphase layer (SEI) comprising the carbon coating produced via the method, a battery electrode comprising such an SEI layer, and a battery comprising such a battery electrode are also provided.

Fibrous Structured Amorphous Silica Including Precipitated Calcium Carbonate, Compositions of Matter Made Therewith, and Methods of Use Thereof

A nano-composite structure. A synthetic nano-composite is described having a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation. The nano-composite may be useful for fillers in paints and coatings. Also, the nano-composite may be useful in coatings used in the manufacture of paper products.

Thermoplastic Resin Composition and Molded Article Produced from Same

The present invention is characterized by including an aromatic vinyl-based copolymer, glass fiber, and zinc oxide, wherein the zinc oxide has an average particle size (D50) of about 0.5 to 3 μm as measured by a particle size analyzer, and a size ratio (B/A) of peak B, spanning the range of 450 to 600 nm, to peak A, spanning the range of 370 to 390 nm, of about 0.01 to 1.0 when measuring photoluminescence. The thermoplastic resin composition exhibits excellent rigidity, antibacterial properties, weather resistance, external appearance and the like.

Electrode active material for magnesium battery

Provided are an electrode active material for a magnesium battery, including a complex transition metal oxide which is represented by a Formula 1 below and which includes λ-MnO 2 phase having a cubic structure at a percentage of 60% or higher, an electrode and a magnesium battery including the same, and a method of preparing the electrode active material for a magnesium battery: <Formula 1> M x Mn y O z In the Formula 1, 0<x≦1, 0.25≦y≦1, and 1≦z<3; and M is at least one metal selected from Mg 2+ , Ca 2+ , Na + , K + , and Zn 2+ .

MORPHOLOGICALLY AND SIZE UNIFORM MONODISPERSE PARTICLES AND THEIR SHAPE-DIRECTED SELF-ASSEMBLY

Monodisperse particles having: a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology are disclosed. Due to their uniform size and shape, the monodisperse particles self assemble into superlattices. The particles may be luminescent particles such as down-converting phosphor particles and up-converting phosphors. The monodisperse particles of the invention have a rare earth-containing lattice which in one embodiment may be an yttrium-containing lattice or in another may be a lanthanide-containing lattice. The monodisperse particles may have different optical properties based on their composition, their size, and/or their morphology (or shape). Also disclosed is a combination of at least two types of monodisperse particles, where each type is a plurality of monodisperse particles having a single pure crystalline phase of a rare earth-containing lattice, a uniform three-dimensional size, and a uniform polyhedral morphology; and where the types of monodisperse particles differ from one another by composition, by size, or by morphology. In a preferred embodiment, the types of monodisperse particles have the same composition but different morphologies. Methods of making and methods of using the monodisperse particles are disclosed. 1. A method for treating cancer , comprising the steps of: a single pure crystalline phase of a rare earth-containing lattice,', 'a uniform three-dimensional size, and', 'a uniform polyhedral morphology;, 'providing a plurality of monodisperse particles, the particles each havingproviding a photosensitizer adapted for use in Photodynamic Therapy;introducing the plurality of monodisperse particles and the photosensitizer to a cancerous tissue or a cancerous cell; andirradiating the plurality of monodisperse particles with a first wavelength of electromagnetic radiation such that the plurality of monodisperse particles emits a second wavelength of electromagnetic ...

Nickel cobalt complex hydroxide particles and method for producing the same, positive electrode active material for non-aqueous electrolyte secondary battery and method for producing the same, and non-aqueous electrolyte secondary battery

A method for producing a nickel cobalt complex hydroxide includes first crystallization of supplying a solution containing Ni, Co and Mn, a complex ion forming agent and a basic solution separately and simultaneously to one reaction vessel to obtain nickel cobalt complex hydroxide particles, and a second crystallization of, after the first crystallization, further supplying a solution containing nickel, cobalt, and manganese, a solution of a complex ion forming agent, a basic solution, and a solution containing said element M separately and simultaneously to the reaction vessel to crystallize a complex hydroxide particles containing nickel, cobalt, manganese and said element M on the nickel cobalt complex hydroxide particles crystallizing a complex hydroxide particles comprising Ni, Co, Mn and the element M on the nickel cobalt complex hydroxide particles.

X-RAY SHIELDING MATERIAL AND METHOD OF PREPARATION THEREOF

The present disclosure relates to a process for synthesis of barium bismuth sulfide nanofibers, having equivalent shielding capacity as lead. The present disclosure also relates to a radiation shielding articles and cosmeceuticals. 1. A process for synthesis of barium bismuth sulfide nanofibers , said process comprising the following steps;a. dissolving barium nitrate, bismuth nitrate pentahydrate and thiourea in a solvent system to obtain a dispersion containing complex of barium bismuth sulfide; andb. mixing at least one surfactant in the dispersion under continuous agitation to obtain a mixture;c. heating the mixture at a temperature ranging between 120° C. and 180° C. in an apparatus for 24 hours followed by cooling at a temperature ranging between 20° C. and 30° C. to obtain a precipitate; andd. washing the precipitate by employing at least one solvent selected from the group consisting of water, ethanol, methanol, isopropanol and acetone to obtain nanofibers of barium bismuth sulfide.2. The process as claimed in claim 1 , wherein the solvent system is a combination of ethylene glycol and water at a proportion ranging between 1:1 and 3:1.3. The process as claimed in claim 1 , wherein the surfactant is at least one selected from the group consisting of cetyl trimethylammonium bromide claim 1 , polyvinyl alcohol and polyethylene glycol p-(1 claim 1 ,1 claim 1 ,3 claim 1 ,3-tetramethylbutyl)-phenyl ether.4. The process as claimed in claim 1 , wherein the average diameter of the nanofibers is between 20 nm and 50 nm.5. The process as claimed in claim 1 , wherein the average length of the nanofibers is between of 1 μm and 3 μm.6. Barium bismuth sulfide nanofibers obtained by the process as claimed in ; said nanofibres characterized by (a) diameter of 20 nm to 50 nm and (b) the length of 1 μm to 3 μm and the X-Ray diffraction pattern having 20 values at 28.58 claim 1 , 24.95 claim 1 , 46.52 claim 1 , 31.82 claim 1 , 52.7 claim 1 , 45.53 claim 1 , 32.87 claim 1 , 39. ...

METHODS OF MAKING GRAPHENE QUANTUM DOTS FROM VARIOUS CARBON SOURCES

Various embodiments of the present disclosure pertain to methods of making graphene quantum dots from a carbon source by exposing the carbon source to a solution that contains an oxidant. The exposing results in the formation of the graphene quantum dots from the carbon source. The carbon sources can include coal, coke, biochar, asphalt, and combinations thereof. The oxidants can include an acid, such as nitric acid. In some embodiments, the oxidant consists essentially of a single acid, such as nitric acid. Various embodiments of the present disclosure also include steps of separating the formed graphene quantum dots from the oxidant by various methods, such as evaporation. In various embodiments, the methods of the present disclosure also include steps of enhancing a quantum yield of the graphene quantum dots, reducing the formed graphene quantum dots, and controlling the diameter of the formed graphene quantum dots. 1. A method of making graphene quantum dots from a carbon source , wherein the method comprises: wherein the carbon source is selected from the group consisting of coal, coke, biochar, asphalt, and combinations thereof, and', 'wherein the exposing results in formation of the graphene quantum dots from the carbon source., 'exposing the carbon source to a solution comprising an oxidant,'}2. The method of claim 1 , wherein the carbon source comprises biochar.3. The method of claim 2 , wherein the biochar is selected from the group consisting of applewood biochar claim 2 , mesquite biochar claim 2 , pyrolyzed biochar claim 2 , cool terra biochar claim 2 , pallet-derived biochar claim 2 , randomized tree-cutting biochars claim 2 , and combinations thereof.4. The method of claim 1 , wherein the carbon source comprises coal.5. The method of claim 4 , wherein the coal is selected from the group consisting of anthracite claim 4 , asphaltenes claim 4 , bituminous coal claim 4 , sub-bituminous coal claim 4 , metamorphically altered bituminous coal claim 4 , peat ...

Rod shaped crystal of sulfide compound semiconductor

The present invention provides a method of producing a sulfide compound semiconductor containing Cu, Zn, Sn and S, in which the method includes a solvothermal step of conducting a solvothermal reaction of Cu, Zn, Sn and S in an organic solvent, and a rod-like crystal of sulfide compound semiconductor containing Cu, Zn, Sn and S.

METHOD AND SYSTEM FOR RECOVERING RARE EARTH ELEMENTS FROM WITHIN AN OBJECT

Disclosed is a method and system for recovering at least rare earth elements from within an object A consisting of at least one first rare earth portion or a mixture of rare earth elements and a second metal portion. The method includes a solvothermal treatment step that places the object in contact with a fluid for causing at least one rare earth portion and/or mixture of rare earth elements and the metal portion to oxidize in order to separate same, the value of the reaction temperature Tr is selected according to the nature of the object, the reaction following a R-M→R(X)x+M(X)y scheme, where R is the rare earth element or a mixture of rare earth elements, M is the transition metal, and (X) is a group which depends on the fluid used. 111-. (canceled)12. Method for recovering at least rare earth elements contained in an object A composed of at least one first rare earth portion or mixture of rare earth elements and of a second metal portion , the method comprising a solvothermal treatment step performed in the presence of at least one solvent to place the object “A” in contact with a fluid or mixture of fluids adapted to cause at least one rare earth portion and/or mixture of rare earth elements and the metal portion to oxidize in order to separate same , the fluid or mixture of fluids comprising one or more components having a molar mass higher than 2 g·mol , the value of the reaction temperature Tr being chosen according to the type of object , with a maximum value lower than the melting point of the object and a minimum value higher than the evaporation temperature of the solvent , the reaction following a scheme R-M→R(X)x+M(X)y where R is the rare earth element or mixture of rare earth elements , M is a transition metal and (X) is a group dependent on the fluid used.13. The method according to claim 12 , wherein the object “A” is a magnetic component composed of at least one rare earth element and a magnetic alloy claim 12 , the fluid being a solvent adapted ...

METHOD FOR PRODUCING BARIUM SULFATE POWDER AND BARIUM SULFATE POWDER

It is an object of the present disclosure to provide a method for inexpensively producing a high-performance barium sulfate powder which is obtained by using inexpensive barium sulfide as a raw material, has a high whiteness degree, and can suppress the generation of volatile components. 1. A method for producing a barium sulfate powder comprising a step of heat treating a raw barium sulfate powders obtained by using barium sulfide as a raw material at 600 to 1300° C. , wherein a retention time X (minutes) at a heat treatment temperature of t ° C. is more than time expressed by the following general formula:{'br': None, 'i': X', 'A×', '×e, 'sup': 6', '(−0.015×t), '(minutes)=10'}A is 8 or more, and an upper limit of X is 3000 minutes in the formula.2. The method for producing a barium sulfate powder according to claim 1 , wherein the raw barium sulfate powder is coated with at least one compound selected from the group consisting of silica claim 1 , silica hydrates claim 1 , and aluminum compounds.3. The method for producing barium sulfate powders according to claim 1 , wherein the raw barium sulfate powder has a chlorine content of 100 ppm or less claim 1 , and a sodium content of 100 ppm or less.4. A barium sulfate powder which has an L value of 98.3 or more claim 1 , an a value of −0.5 to 0.5 claim 1 , and a b value of 0 to 0.9 as for powder color claim 1 , and shows a weight reduction of 0.5 wt % or less after being heated at 900° C. for 30 minutes claim 1 , and has a sulfur content of 45 ppm or less.5. The barium sulfate powder according to claim 4 , which has an average particle diameter of 0.01 to 50 μm.6. The barium sulfate powder according to for a reflection film claim 4 , which has an L value of 99.0 or more claim 4 , an a value of −0.2 to 0.1 claim 4 , and a b value of 0 to 0.7 as for powder color.7. The barium sulfate powder according to claim 4 , which has a chlorine content of 100 ppm or less claim 4 , and a sodium content of 100 ppm or less.8. The ...

Anode active material for secondary battery, preparation method thereof and secondary battery comprising the same

The present disclosure relates to an anode active material for a sodium ion secondary battery, a method for preparing the same, and a sodium ion secondary battery including the same. More particularly, the anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide obtained by a simple precipitation process, and can be applied to a sodium ion secondary battery having high capacity characteristics.

COMPOSITE HAVING SEMICONDUCTOR STRUCTURES EMBEDDED IN A MATRIX

Semiconductor structures having a nanocrystalline core and corresponding nanocrystalline shell and insulator coating, wherein the semiconductor structure includes an anisotropic nanocrystalline core composed of a first semiconductor material, and an anisotropic nanocrystalline shell composed of a second, different, semiconductor material surrounding the anisotropic nanocrystalline core. The anisotropic nanocrystalline core and the anisotropic nanocrystalline shell form a quantum dot. An insulator layer encapsulates the nanocrystalline shell and anisotropic nanocrystalline core. 1. A method of fabricating a semiconductor structure , the method comprising:forming an anisotropic nanocrystalline core comprising a first semiconductor material;forming an anisotropic nanocrystalline shell from a second, different, semiconductor material to completely surround the anisotropic nanocrystalline core, wherein the nanocrystalline shell has a center, wherein the nanocrystalline shell extends in a first direction along a first axis and the anisotropic nanocrystalline core is off-center with respect to the anisotropic nanocrystalline shell in the first direction along the first axis, wherein the nanocrystalline shell extends in a second direction along a second axis orthogonal to the first axis, and the anisotropic nanocrystalline core is further disposed off-center with respect to the anisotropic nanocrystalline shell in the second direction along the second axis, wherein the nanocrystalline shell is longer in the first direction than in the second direction, and wherein the anisotropic nanocrystalline core and the anisotropic nanocrystalline shell form a quantum dot; andforming an insulator layer encapsulating the anisotropic nanocrystalline shell and anisotropic nanocrystalline core.2. The method of claim 1 , wherein forming the insulator layer comprises bonding the insulator layer directly to the anisotropic nanocrystalline shell.3. The method of claim 2 , wherein bonding the ...

THERMALLY CONDUCTIVE COMPLEX OXIDE, PRODUCTION METHOD THEREFOR, THERMALLY CONDUCTIVE COMPLEX OXIDE-CONTAINING COMPOSITION, AND USE THEREFOR

An object of the present invention is to provide a thermally conductive composite oxide that can realize physical properties required for coating films, films, and molded products obtained by single use of the thermally conductive composite oxide blended into paints and resin compositions without the need for an improvement measure such as surface treatment and that is excellent in thermal conductivity, water resistance, acid resistance, and electric insulation. The object is achieved by a thermally conductive composite oxide and the production process thereof, the thermally conductive composite oxide being a composite oxide having a spinel structure and containing aluminum as a main component metal and at least one metal other than aluminum, and in the thermally conductive composite oxide, the metal other than aluminum is at least one selected from the group consisting of magnesium, zinc, calcium, and strontium, the ratio, (b mol)/(a mol), of the number of moles (b) of the metal other than aluminum to the number of moles (a) of an aluminum element in the alumina-based compound is 0.1 or more and 1.0 or less, and the Mohs hardness of the thermally conductive composite oxide is less than 9. 1. A thermally conductive composite oxide being a composite oxide having a spinel structure , obtained by firing at least an alumina-based compound and a compound of a metal other than aluminum , and comprising:aluminum as a main component metal; andat least one metal other than aluminum,wherein the metal other than aluminum is at least one selected from the group consisting of magnesium, zinc, calcium and strontium,a ratio, (b mol)/(a mol), of a number of moles (b) of the metal other than aluminum to a number of moles (a) of an aluminum element in the alumina-based compound is 0.1 or more and 1.0 or less, anda Mohs hardness of the thermally conductive composite oxide is less than 9.2. The thermally conductive composite oxide according to claim 1 , wherein a content ratio of each ...

Method for producing silica sol having elongated particle shape

A method for producing a silica sol containing a small amount of metal impurities and wherein colloidal silica having an elongated particle shape is dispersed in a solvent, by addition of a compound as an anion source and ammonia as an alkali source and heating of the resultant mixture at a predetermined temperature, includes the following steps: (a) preparing a raw material liquid by adding at least one compound as an anion source selected from the group of inorganic acids, organic acids, and ammonium salts of these acids, and ammonia to a silica sol as a raw material having SiO 2 of 1% by mass to 30% by mass and a pH of 2 to 5 so the mass ratio of the compound to SiO 2 is 0.5% to 1.9%; and (b) heating the raw material liquid prepared in step (a) at 80° C. to 200° C. for 0.5 hours to 20 hours.

Positive manganese lithium oxide-stabilised electrode for a secondary lithium battery and a method for producing same

The present invention provides the compound LiMn2--x-yNaxMyO4/Na1-zMnLizMtO2/Na2CO3, to be used as a positive electrode for rechargeable lithium ion battery, where M is a metal or metalloid, 0.0≤x≤0.5; 0.0≤y≤0.5; 0.1≤z≤0.5; 0.0≤t≤0.3; as well as the method for producing it. The synthesis process includes disolving or mixing the precursor metals and then calcining them in air or controlled atmosphere in a temperature range between 250° C. and 1000° C., and for a time range of 0.5 h to 72 h to obtain the composite proposed with the interaction of its three present phases, presenting a high retention capacity during repeated loading/unloading cycles and excellent discharge capacity both at room temperature and up to 55° C.

Improved process for preparing silica coated inorganic particles

An improved process for preparing non-agglomerated water insoluble inorganic particles having a dense amorphous silica coating by using a dispersion aid.

Particulate material

Composite particles, process for producing the same, and pigment, paint and resin composition using the same

Composite particles having an average particle diameter of 0.001 to 10.0 μm, comprise: white inorganic particles as core particles; a gluing agent coating layer formed on surface of the white inorganic particle; and an organic pigment coat formed onto said gluing agent coating layer in an amount of from 1 to 500 parts by weight based on 100 parts by weight of the white inorganic particles. The composite particles are substantially free from desorption of an organic pigment from the surface thereof and contain no harmful element.

Pigments coated with inorganic compounds and cosmetics

White or colored pigments suffering from no change in the color tone or hiding power while sustaining the coloring and hiding performances of the pigments per se, even when the surfaces thereof are moistened with water or contaminated with oil, etc. These pigments are surface-coated with inorganic compounds having a refractive index of 1.8 or below. A preferable example of the inorganic compounds is silicone oxide, while preferable examples of the pigments are inorganic pigments comprising titanium oxide, zinc oxide and iron oxide. The cosmetics of the invention contain the above pigments.

Iron oxide hydroxide composite particles, pigment, paint and resin composition.

Iron oxide hydroxide composite particles having an average particle diameter of 0.005 to 1.0 µm, comprises: iron oxide hydroxide particles as core particles, a coating formed on surface of said iron oxide hydroxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and an organic pigment coat formed on said coating layer comprising said organosilicon compound, in an amount of from 1 to 30 parts by weight based on 100 parts by weight of said iron oxide hydroxide particles. The iron oxide hydroxide composite particles of the present invention contain no harmful elements and exhibit not only excellent chemical resistances such as acid resistance and alkali resistance, but also excellent heat resistance.

Method for producing spherical silica particles

Alumina powder, process for producing the same and polishing composition

Production of an alumina powder characterized by having a single or multiple crystal structure selected from the group consisting of γ, δ and θ-forms, a primary particle size of 10 to 50 nm, a mean secondary particle size of 100 to 500 nm, and a granular primary particle shape, or an alumina powder characterized by having an a-form crystal structure, a primary particle size of 60 to 150 nm, a mean secondary particle size of 200 to 500 nm, and a granular primary particle shape, using as a raw material an alumina hydrate comprising rectangular plate-like primary particles having a boehmite structure and having a length of one side of 10 to 50 nm; and preparation of a polishing composition comprising the alumina powder, water and a polishing accelerator.

Ultraviolet shielding composite fine particles, method for producing the same, and cosmetics

The present invention is directed to ultraviolet shielding composite fine particles having transparency in a visible light region include (a) matrix particles comprising an aggregate of primary particles having an average particle diameter of from 0.001 to 0.3 μm, the aggregate being formed while the primary particles retain their shapes; and (b) daughter particles having an average particle diameter of from 0.001 to 0.1 μm, the daughter particles being dispersed in and supported by the matrix particles. In the composite fine particles, the daughter particles have a smaller band gap energy than the particles constituting the matrix particles and are capable of absorbing ultraviolet light, and the resulting ultraviolet shielding composite fine particles have substantially no catalytic activity.

Inorganic compound-coated pigments and cosmetics using the same

White or colored pigments which do not suffer from color tone or hiding performances thereof even when the surface is moistened with water or oil, without spoiling coloring performance or hiding performance of the pigments themselves. These pigments are surface-coated with an inorganic compound having the refractive index of 1.8 or below. The inorganic compound is preferably silicon oxide, and the pigments are preferably inorganic pigments comprising titanium oxide, zinc oxide, or iron oxide. The cosmetics of the invention are blended the pigments therein.

Cerium oxide sol and abrasive

There is provided an abrasive used for polishing a substrate which comprises silica as a main component, for example a rock crystal, a quartz glass for photomask, for CMP of an organic film, Inter Layer Dielectric (ILD) and shallow trench isolation of a semiconductor device, or for polishing a hard disk made of glass. A sol which particles are dispersed in a medium, wherein the particles have a particle size of 0.005 to 1 μm and comprise as a main component crystalline cerium oxide of the cubic system and as an additional component a lanthanum compound, a neodymium compound or a combination thereof, wherein the additional component is contained in X/(Ce+X) molar ratio of 0.001 to 0.5 in which X is lanthanum atoms, neodymium atoms or a combination thereof. The sol is prepared by reacting an aqueous solution which a cerium (III) salt is mixed with a lanthanum (III) salt and/or a neodymium (III) salt, with an alkaline substance to give a suspension in which cerium (III) hydroxide is homogeneously mixed with lanthanum (III) hydroxide and/or neodymium (III) hydroxide, and blowing oxygen or a gas containing oxygen into the suspension.

Process for the preparation of silicon nitride by carbonitriding silica and silicon nitride in the form of whisker-free particles

Abrasive particulate material, and method of planarizing a workpiece using the abrasive particulate material

An abrasive particulate material is disclosed that includes alumina particles. The alumina particles include a transition alumina and at least 5.0 wt % of an amorphous phase. The transition alumina particles also have a density not greater than about 3.20 g/cm 3 .

Organic polymer/inorganic fine particle-dispersed aqueous solution having excellent stability and uses thereof

An organic polymer/inorganic fine particle-dispersed aqueous solution having excellent dispersion stability comprising a water-slightly soluble inorganic fine particle (B) having a particle diameter of 500 nm or less obtained by reacting (a) a compound of a second group element in the periodic table with (b) at least one compound selected from organic acids, inorganic acids and salts thereof in the presence of a water-soluble or water-dispersible synthetic high molecular compound (A) having a carboxyl group in a proportion of (A):(B)=10:90 to 99.99:0.01 (weight ratio). The above dispersed aqueous solution can be used as a paper-making chemical, an ink jet recording chemical, medical materials and cosmetic raw materials.

Alumina powder, process for producing the same and polishing composition

Production of an alumina powder characterized by having a single or multiple crystal structure selected from the group consisting of η, δ and υ-forms, a primary particle size of 10 to 50 nm, a mean secondary particle size of 100 to 500 nm, and a granular primary particle shape, or an alumina powder characterized by having an α-form crystal structure, a primary particle size of 60 to 150 nm, a mean secondary particle size of 200 to 500 nm, and a granular primary particle shape, using as a raw material an alumina hydrate comprising rectangular plate-like primary particles having a bohemite structure and having a length of one side of 10 to 50 nm. Preparation of a polishing composition comprising the alumina powder, water and a polishing accelerator.

Abrasive particulate material, and method of planarizing a workpiece using the abrasive particulate material

An abrasive particulate material is disclosed that includes alumina particles. The alumina particles include a transition alumina and at least 5.0 wt % of an amorphous phase. The transition alumina particles also have a density not greater than about 3.20 g/cm 3 .

Aluminum Oxide Dispersion and Method of Preparing Same

An aluminum oxide dispersion comprising from 30 to 99.9% (w/w) of a solvent; and from 0.1 to 70% (w/w) of aluminum oxide nanofibers suspended in the solvent, wherein the nanofibers comprise from 0 to 99.99% (w/w) of γ-AlO(OH) and from 0.01 to 100% (w/w) of γ-Al 2 O 3 ; and a method of preparing the aluminum oxide dispersion.

Aluminum oxide dispersion and method of preparing same

An aluminum oxide dispersion comprising from 30 to 99.9% (w/w) of a solvent; and from 0.1 to 70% (w/w) of aluminum oxide nanofibers suspended in the solvent, wherein the nanofibers comprise from 0 to 99.99% (w/w) of γ-AlO(OH) and from 0.01 to 100% (w/w) of γ-Al 2 O 3 ; and a method of preparing the aluminum oxide dispersion.

Preparation method of needle type metal -silica aerogel composite particle and needle type metal-silica aerogel composite particle prepared by the same

본 발명은 침상형 금속-실리카 에어로겔 복합입자 제조방법 및 이에 의해 제조된 금속-실리카 에어로겔 복합입자에 관한 것으로서, 산성용액 대비 물유리 용액의 농도비를 증가시킴으로써 제조되는 침상형 금속-실리카 에어로겔 복합입자의 표면에 관능화제와 반응할 수 있는 반응기의 함량도 증가시키고, 이로 인해 소량의 관능화제와 반응하더라도 결합도가 우수하고, 고분자 레진의 첨가제로 적용 시 굴곡강도, 인장강도 및 충격강도가 개선될 수 있는 침상형 금속-실리카 에어로겔 복합입자의 제조방법 및 이에 의해 제조된 금속-실리카 에어로겔 복합입자를 제공하는 것이다. The present invention relates to a method for manufacturing a needle-like metal-silica airgel composite particle and a metal-silica airgel composite particle prepared thereby, and the needle-like metal-silica airgel composite particle prepared by increasing the concentration ratio of an acidic solution to a water glass solution. The content of reactive groups that can react with the functionalizing agent in To provide a method for producing a needle-shaped metal-silica airgel composite particle and a metal-silica airgel composite particle prepared thereby.

一种颗粒形态可控的硅溶胶及其制备方法

本发明涉及半导体化学机械抛光技术领域，具体公开一种颗粒形态可控的硅溶胶及其制备方法。所述制备方法，包括如下步骤：配制若干组烷氧基硅烷质量含量≥95％的酸性组合液和含有碱催化剂、高纯水及有机溶剂的母液；将一组所述酸性组合液加入到所述母液中，得第一硅溶胶；至少一次地向所得第一硅溶胶中依次加入高纯水、一组所述酸性组合液，得硅溶胶一次液；浓缩和溶剂置换，得到硅溶胶产品。本发明提供的制备方法通过调控烷氧基硅烷的酸性组合液的酸值，并调节加入的各组酸性组合液的酸值的变化，实现了硅溶胶颗粒形态的可控，得到了球形和非球形的硅溶胶，所得硅溶胶的一次固含>10％，金属离子含量<1ppm。

Abrasive powder material and abrasive suspension for semiconductor substrate selective polishing and polishing method

FIELD: chemistry. SUBSTANCE: abrasive powder material is in form of aluminium oxide particles and contains transition aluminium oxide and not less than 5.0 wt % but not more than 40 wt % amorphous phase. The aluminium oxide particles have density of not less than 3.20 g/cm 3 . The invention also pertains to an abrasive suspension containing water as a solvent and said abrasive powder material in amount ranging from 3.0 wt % to not more than 30 wt %. The invention also relates to a method of preparing said abrasive material, involving: burning aluminium-containing material by heating said material to temperature sufficient for turning said aluminium-containing material into initial particles mainly containing transition aluminium oxide; and grinding the obtained initial particles to obtain aluminium oxide particles containing transition aluminium oxide and not less than 5.0 wt % but not more than 40 wt % amorphous phase. Said aluminium oxide particles have density less than 3.20 g/cm 3 . The method of polishing a conducting metal surface of a workpiece involves putting the abrasive suspension between the workpiece and a slab and moving the slab and workpiece relative each other. EFFECT: change in density of abrasive material, improved selectivity of the suspension which contains the abrasive material. 24 cl, 6 dwg, 3 tbl, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 401 856 (13) C2 (51) МПК C09K 3/14 (2006.01) C01F 7/44 (2006.01) B24B 1/00 (2006.01) B24D 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2008114107/04, 13.10.2006 (24) Дата начала отсчета срока действия патента: 13.10.2006 (72) Автор(ы): ХЭРЛЕ Эндрю Г. (US), ВАНГ Юн (US) (43) Дата публикации заявки: 20.11.2009 2 4 0 1 8 5 6 (45) Опубликовано: 20.10.2010 Бюл. № 29 (56) Список документов, цитированных в отчете о поиске: ЕР 1256548 А1, 13.11.2002. L.D.Hart «Alumina Chemicals», Westerville USAO, 1990, pages 18, ...

Thermoplastic resin composition and article produced therefrom

본 발명의 방향족 비닐계 공중합체 수지; 유리 섬유; 및 산화아연을 포함하며, 상기 산화아연은 입도분석기로 측정한 평균 입자 크기(D50)가 0.5 내지 3 ㎛이고, 광 발광(Photo Luminescence) 측정 시, 370 내지 390 nm 영역의 피크 A와 450 내지 600 nm 영역의 피크 B의 크기비(B/A)가 0.01 내지 1.0인 것을 특징으로 한다. 상기 열가소성 수지 조성물은 강성, 항균성, 내후성, 외관 특성 등이 우수하다. The aromatic vinyl copolymer resin of the present invention; glass fiber; And zinc oxide, wherein the zinc oxide has an average particle size (D50) of 0.5 to 3 μm measured by a particle size analyzer, and peaks A and 450 to 600 of a region of 370 to 390 nm when measuring photoluminescence It is characterized in that the size ratio (B/A) of peak B in the nm region is 0.01 to 1.0. The thermoplastic resin composition has excellent stiffness, antibacterial properties, weather resistance, and appearance properties.

一种吸附剂、制备氢氧化铝的方法及应用

一种吸附剂、制备氢氧化铝的方法及应用，属于材料化工领域。制备方法包括：在搅拌和40℃至100℃的温度下，将铝单质加入溶液中进行铝水反应，将反应沉淀物在70℃至100℃的温度下干燥。其中，催化剂包括有机胍类化合物、有机胺类化合物、有机胺类化合物与烷基氢氧化铵的混合物、或无机铵盐。该方法可以获得特定形状且粒径分布单一的氢氧化铝。

具有优异分散稳定性的有机聚合物/无机细粒－分散水溶液及其应用

一种具有优异分散稳定性的有机聚合物/无机细粒－分散水溶液,其包括颗粒直径为500纳米或更小的微溶于水的无机细粒(B),(A)与(B)的比例为10∶90至99.99∶0.01(重量比),其中无机细粒(B)的制备如下:在具有羧基的水溶性或水分散的合成高分子化合物(A)的存在下,使周期表第二族元素的化合物(a)与选自有机酸、无机酸及其盐中的任意一种化合物反应。上述分散水溶液可以用作造纸化学品、喷墨记录化学品、医药材料和化妆品原料。

氧化铝颗粒及其制造方法

本发明公开了氧化铝颗粒和含有氧化铝颗粒的组合物。本发明还公开了制造氧化铝颗粒的方法和使用氧化铝颗粒的方法。

碳材料、其制备方法和用途

一种包括具有石墨结构的碳颗粒和纤维状碳的碳材料，所述颗粒具有沉积到其至少一部分表面上的含碳材料。在碳材料中，含碳材料通过对含有聚合物的组合物进行热处理来得到。优选将纤维状碳通过含碳材料沉积到碳颗粒上，所述含碳材料是通过对含有聚合物的组合物进行热处理来得到的。结果，将碳材料用作二次电池的负极活性材料时，可以改善电导率并且可以改善大电流负荷的耐用特性与循环特性。通过将含碳材料涂层到具有石墨结构的碳颗粒上，可以防止基于基于碳酸亚乙酯的电解质溶液对石墨结构的损坏。

Method for producing iron oxide yellow pigment

Acicular electro conductive titanium oxide and process for production same

내용 없음. No content.

Preparation method of needle type metal -silica aerogel composite particle and needle type metal-silica aerogel composite particle prepared by the same

본 발명은 침상형 금속-실리카 에어로겔 복합입자 제조방법 및 이에 의해 제조된 금속-실리카 에어로겔 복합입자에 관한 것으로서, 침상형 금속염 입자염 입자 및 상기 침상형 금속염 입자염 입자의 표면을 둘러싸며 형성되는 실리카 에어로겔을 포함하며, 하기의 수학식 1을 만족하는 것인 침상형 금속-실리카 에어로겔 복합입자 및 이의 제조방법을 제공한다. [수학식 1] Y=-0.874X+K 상기 수학식 1에서, Y는 압축강도(MPa)이며, X는 침상형 금속-실리카 에어로겔 복합입자의 종횡비며, K는 45.11 내지 48.11 이다. 본 발명의 침상형 금속-실리카 에어로겔 복합입자는 종횡비에 따라 압축강도 값을 용이하게 제어할 수 있으므로 다양한 고분자 레진에 적용될 수 있고, 요구되는 물성에 따라 압축강도를 조절할 수 있으므로 활용도가 높은 효과가 있다. The present invention relates to a method for producing a needle-shaped metal-silica airgel composite particle and a metal-silica airgel composite particle prepared thereby, wherein the needle-shaped metal salt particle and silica formed surrounding the surface of the needle-shaped metal salt particle salt particle It includes an airgel, which satisfies the following Equation (1), which provides a needle-shaped metal-silica airgel composite particle and a method for manufacturing the same. [Equation 1] Y=-0.874X+K In Equation 1, Y is the compressive strength (MPa), X is the needle-shaped metal-silica airgel composite particle aspect ratio, K is 45.11 to 48.11. Since the needle-shaped metal-silica airgel composite particle of the present invention can easily control the compressive strength value according to the aspect ratio, it can be applied to various polymer resins, and the compressive strength can be adjusted according to the required physical properties. .

Частицы оксида алюминия и способы их получения

1. Способ получения частиц оксида алюминия, включающий стадии: ! (a) добавления первого содержащего алюминий соединения к первому кислотному раствору, пока значение рН первого кислотного раствора не станет равным или большим чем около 8,0, с образованием первого основного раствора, в котором величина рН повышается с регулируемой скоростью менее чем около 1,8 единицы рН в минуту; ! (b) поддерживания величины рН первого основного раствора в течение по меньшей мере примерно 1,0 мин; ! (c) добавления кислоты к первому основному раствору, пока значение рН первого основного раствора не станет равным или меньшим чем около 5,0, с образованием второго кислотного раствора; ! (d) поддерживания величины рН второго кислотного раствора в течение по меньшей мере 1,0 мин; ! (e) добавления второго содержащего алюминий соединения ко второму кислотному раствору, пока значение рН второго кислотного раствора не станет равным или большим чем около 8,0, с образованием второго основного раствора, в котором величина рН повышается с регулируемой скоростью менее чем примерно 1,8 единицы рН в минуту; ! (f) поддерживания величины рН второго основного раствора в течение по меньшей мере около 1,0 мин; и ! (g) повторения стадий от (с) до (f) по меньшей мере 5 раз. ! 2. Способ по п.1, в котором названное первое содержащее алюминий соединение и названное второе содержащее алюминий соединение включают алюминат натрия и названная кислота включает азотную кислоту. ! 3. Способ по п.2, в котором только алюминат натрия и азотная кислота представляют собой реагенты, используемые для получения частиц оксида алюминия. ! 4. Способ по п.1, в котором стадии от (с) до (f) повторяют около 20 РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2009 147 462 (13) A (51) МПК C01F 7/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2009147462/05, 22.05.2008 (71) Заявитель(и): У.Р. ГРЕЙС ЭНД КО.-КОНН. (US) Приоритет(ы): (30) Конвенционный приоритет: ...

Apparatus for producing polysilicon and preparation of polysilicon using same

본 발명에 따르면, 반응가스 및 환원가스 공급관과, 실리콘 용융온도 이상으로 가열되는 반응면을 구비한 반응관; 및 상기 반응관의 내부에 설치된 실리콘 구조체를 포함하며, 반응가스와 환원가스가 상기 반응면에서 반응하여 폴리실리콘이 용융상태로 석출되는 것인, 폴리실리콘 제조 장치 및 이를 이용한 폴리실리콘 제조 방법이 제공된다. According to the present invention, there is provided a reaction tube comprising a reaction gas and a reducing gas supply pipe, and a reaction surface heated to a temperature higher than a silicon melting temperature; And a silicon structure disposed inside the reaction tube, wherein the reaction gas and the reducing gas react on the reaction surface to precipitate the polysilicon in a molten state, and a method of manufacturing polysilicon using the same do.

무기 다공성 미립자

작은 입경을 갖고, 무기성이고, 균일한 공극 직경을 갖는 다공성 물질의 졸; 상기 졸의 합성 방법; 상기 졸, 특히 잉크 흡수성, 투명성, 내수성, 및 내광성이 우수한 잉크-젯 기록 매질의 용도; 및 잉크-젯 기록 매질용 코팅 유액. 상기 졸은 동적 광분산법에 의해 측정된 평균 입경이 10 내지 400 nm이고 평균 일차-입자 종횡비가 2 이상이고, 길이 방향으로 연장된 중간공극을 갖고, 실질적으로 이차 응집 입자를 함유하지 않는 무기 다공성 물질을 함유한다.

用于热喷涂的纳米结构的进料

本发明涉及将经过再加工的纳米颗粒粉末进料,纳米颗粒悬浮液,及有机金属液体应用在传统的热喷涂沉积上,以制造高质量的纳米结构的涂层的方法。在本发明中例举了三种实施方案。在这些不同的方法中,都是用超声波方法分解合成的颗粒附聚物,分散在液体介质中的纳米颗粒以及雾化液体前体。

自洁涂层、自洁纤维、自洁地毯及其应用

本发明提供了一种自洁涂层、自洁纤维、自洁地毯及其应用，该自洁涂层具有孔洞之间相互贯通的多孔结构，且涂层所含孔洞的体积占涂层总体积的20％‑98％，多孔结构中的孔洞的孔径为0.5nm‑50nm；所述自洁涂层主要由主体材料制备而成，所述主体材料为氧化钛、氧化锆、氮化钛、氧化硅、氧化钨、g‑C 3 N 4 半导体聚合物、钙钛矿半导体、银、铁、金、铝、铜、锌、锡和铂中的一种或多种。该自洁涂层具有较强的自洁作用，可以显著延长相应产品的使用寿命。

复合颗粒、其制备方法以及使用该复合颗粒的颜料、油漆和树脂组合物

本发明涉及复合颗粒,该复合颗粒的制备方法以及使用该复合颗粒的颜料、油漆和树脂组合物。平均粒径为0.001－10.0μm的复合颗粒,其含有:白色无机颗粒作为颗粒芯;在所说白色无机颗粒表面上形成的胶合剂涂层;和形成在所说胶合剂涂层上的有机颜料涂层,其中有机颜料的量以100重量份所说的白色无机颗粒计为1－500重量份。该复合颗粒基本上不会从其表面脱附有机颜料并且不含有害成分。

이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 이차전지

본 발명에서는 코어; 상기 코어를 둘러싸며 위치하는 쉘; 및 상기 코어와 쉘 사이에 위치하며, 상기 코어와 쉘을 연결하는 3차원 망목구조체 및 공극을 포함하는 완충층을 포함하고, 상기 코어, 쉘 및 완충층에서의 3차원 망목구조체는 각각 독립적으로 리튬 니켈망간코발트계 복합금속 산화물을 포함하고, 상기 니켈, 망간 및 코발트 중 적어도 어느 하나의 금속원소는, 상기 코어, 쉘 및 활물질 입자 전체 중 어느 하나의 영역 내에서 점진적으로 변화하는 농도구배를 나타냄으로써, 전극 제조시 압연공정에 의한 활물질의 파괴를 최소화하고, 전해액과의 반응성을 극대화하며, 또 쉘을 형성하는 입자가 리튬이온의 삽입 및 탈리가 용이한 배향의 결정구조를 가져 리튬 이차전지의 출력특성 및 수명 특성을 향상시킬 수 있는, 이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 이차전지를 제공한다.

Process for producing lithium cobalt composite oxide for positive electrode of lithium secondary battery

체적용량밀도가 크고 안전성이 높고 균일 도공성이 우수하고, 충방전 사이클 내구성, 저온특성이 우수한 리튬 이차전지용 양극 활물질을 제공한다. The present invention provides a cathode active material for a lithium secondary battery having a high volume capacity density, high safety, excellent uniform coating properties, excellent charge / discharge cycle durability, and low temperature characteristics. 코발트원, 리튬원 및 필요에 따라 하기 M 원소원 및 불소원의 혼합물을 산소함유 분위기에서 800∼1050℃ 에서 소성하는, 일반식 Li p Co x M y O z F a (단, M 은 Co 이외의 천이금속원소, 알루미늄 또는 알칼리 토금속 원소이다. 0.9≤p≤1.1, 0.980≤x≤1.000, o≤y≤0.02, 1.9≤z≤2.1, x＋y=1, o≤a≤0.02) 로 표시되는 리튬코발트 복합산화물의 제조방법으로, 상기 코발트원으로서, 비표면적이 5∼50㎡/g 이고, 프레스 밀도가 1.0∼2.5g/㎤ 이고, 일차입자가 응집되어 이차입자가 형성된 구조를 갖는 수산화코발트이고, 또한 그 이차입자를 순수중에 분산시킨 후의 평균입자경 D50 이 원래의 평균입자경 D50 에 대해 1/4 이하인 수산화코발트를 사용한다. General formula Li p Co x M y O z F a , wherein M is cobalt, a lithium source, and a mixture of the following M element source and fluorine source, if necessary, in an oxygen-containing atmosphere, at a temperature of 800 to 1050.degree. A transition metal element, an aluminum or alkaline earth metal element of Li, represented by 0.9≤p≤1.1, 0.980≤x≤1.000, o≤y≤0.02, 1.9≤z≤2.1, x + y = 1, o≤a≤0.02) A method for producing a cobalt composite oxide, wherein the cobalt source has a specific surface area of 5 to 50 m 2 / g, press density of 1.0 to 2.5 g / cm 3, and cobalt hydroxide having a structure in which primary particles are aggregated to form secondary particles. Moreover, cobalt hydroxide whose average particle diameter D50 after disperse | distributing the secondary particle in pure water is 1/4 or less with respect to the original average particle diameter D50 is used.

저온균일침전법으로 큰 비표면적을 갖도록 제조된 광촉매용 이산화티탄 분말 및 그 제조방법

본 발명은 새로운 형상의 이산화티탄 분말, 그 제조방법 및 상기 이산화티탄을 광촉매로 사용하는 용도에 관한 것으로서, 구체적으로는 본 발명에 의한 이산화티탄 분말은 솜털 모양의 구조 및 130∼200m 2 /g의 비표면적을 특징으로 하고 상기 이산화티탄의 제조 방법은 사염화티타늄 원액에 얼음 또는 얼음물을 첨가하여 1.5M 이상의 티타닐클로라이드 수용액을 제조하는 단계; 상기 티타닐클로라이드 수용액에 물, 암모니아수 또는 황산 이온을 포함한 수용액을 첨가하는 단계; 상기 수용액으로부터 저온 균일침전법에 의해 침전물을 얻는 단계; 및 상기 침전물을 여과, 세척 및 건조하는 단계로 이루어지며, 본 발명에 의한 이산화티탄 분말은 아나타제상 외에 루틸상을 포함함에도 우수한 광촉매 활성을 나타내어 무공해 에너지원을 이용하여 환경 오염 유기물을 분해, 처리하는 고도 산화 처리 기술 (AOP: Advanced Oxidation Process) 등에 유용하게 사용될 수 있고, 상기 제조 방법은 고온, 고압 처리없이 상온에서 이산화티탄 결정상을 직접 얻을 수 있고 제조단가가 낮아 경제적이다.

비수계 이차 전지용 정극 활물질 및 그의 제조 방법, 및 그 정극 활물질을 이용한 비수계 전해질 이차 전지

입도 분포가 좁고 단분산성이며, 전지 용량을 크게 하는 것이 가능한 비수계 이차 전지용 정극 활물질과, 그 공업적인 제조 방법의 제공, 및 이 정극 활물질을 이용한 전기 특성이 우수한 비수계 전해질 이차 전지를 제공한다. 본 발명은 일반식: Li 1 + u Ni x Co y Mn z M t O 2 +α (0.05≤u≤0.95, x+y+z+t=1, 0≤x≤0.5, 0≤y≤0.5, 0.5≤z<0.8, 0≤t≤0.1, M은 첨가 원소이며, Mg, Ca, Al, Ti, V, Cr, Zr, Nb, Mo, W에서 선택되는 1종 이상의 원소)로 표시되는, 평균 입경이 3∼12 ㎛, 입도 분포의 퍼짐을 나타내는 지표인 [(d 90 -d 10 )/평균 입경]이 0.60 이하인 것을 특징으로 하는 비수계 전해질 이차 전지용 정극 활물질에 관한 것이다.

纳米掺杂vib族金属氧化物颗粒或其分散体的制备方法和用途

本发明涉及一种制备VIB族金属氧化物颗粒或其分散体的方法，其中所述VIB族金属是钨和/或钼，所述方法包括：1）提供VIB族金属氧化物前驱体、还原剂和超临界流体；2）所述VIB族金属氧化物前驱体、还原剂在超临界状态下的所述超临界流体中反应得到所述VIB族金属氧化物颗粒或其分散体。所述颗粒或其分散体可用于住宅、建筑物、汽车和轮船等的门窗玻璃，在保持高透明度的同时提供优异的阻隔近红外光线和紫外线的功能，实现阳光和热辐射控制。

이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 이차전지

본 발명에서는 코어; 상기 코어를 둘러싸며 위치하는 쉘; 및 상기 코어와 쉘 사이에 위치하며, 상기 코어와 쉘을 연결하는 3차원 망목구조체 및 공극을 포함하는 완충층을 포함하고, 상기 코어, 쉘 및 완충층에서의 3차원 망목구조체는 각각 독립적으로 리튬 니켈망간코발트계 복합금속 산화물을 포함하고, 상기 니켈, 망간 및 코발트 중 적어도 어느 하나의 금속원소는, 상기 코어, 쉘 및 활물질 입자 전체 중 어느 하나의 영역 내에서 점진적으로 변화하는 농도구배를 나타냄으로써, 전극 제조시 압연공정에 의한 활물질의 파괴를 최소화하고, 전해액과의 반응성을 극대화하며, 또 쉘을 형성하는 입자가 리튬이온의 삽입 및 탈리가 용이한 배향의 결정구조를 가져 리튬 이차전지의 출력특성 및 수명 특성을 향상시킬 수 있는, 이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 이차전지를 제공한다.

Aluminum oxide dispersion and method for preparing the same

Precipitated calcium-carbonate pigment, especially applicable as coating for paper designed for ink-jet printing

FIELD: printing industry. SUBSTANCE: to produce a precipitated calcium carbonate, a suspension of calcium hydroxide is made by mixing of quicklime with water in a reactor with a mixer or in a tank, then the produced suspension is filtered via a 100-mcm filter. The filtered suspension is sent into a reactor of stainless steel equipped with a mixer. Temperature from 10 to 70°C is set, afterwards the suspension is sent into a reactor or a tank for carbonisation, where a carbon-containing gas is bubbled through the suspension. The suspension is drained from the tank, when electric conductivity achieves the minimum level, and pH falls below 8. Coarse particles are removed at a 45-mcm filter. At the same time the carbonisation stage is carried out at speed of carbonising gas flow of below 30 litres per minute under normal conditions per kg of calcium hydroxide in process of deposition. Concentration of precipitated calcium carbonate is increased without using an agent that promotes dispersion or with application of a cationic disperser under quite moderate or mild conditions, which do not cause considerable damage of aggregates/agglomerates, until concentration from 15 to 50% is achieved, preferably in the range from 20 to 30%, most preferably - from 23 to 26 wt % of hard substances. EFFECT: invention makes it possible to produce porous stable agglomerates of precipitated calcium carbonate. 22 cl, 5 dwg, 9 tbl, 12 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 432 374 (13) C2 (51) МПК C09C C01F B41M D21H D21H 1/02 (2006.01) 11/18 (2006.01) 5/50 (2006.01) 17/67 (2006.01) 19/38 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2007141649/05, 29.03.2006 (24) Дата начала отсчета срока действия патента: 29.03.2006 (72) Автор(ы): КЕССБЕРГЕР Михель (CH), ПОЛЬ Михель (AT) R U (73) Патентообладатель(и): ОМИА ДЕВЕЛОПМЕНТ АГ (CH) Приоритет(ы): (30) Конвенционный приоритет: 11.04.2005 EP 05075901.8 ...

Aggregates of alumina hydrates

An aggregate material includes an aluminous material and a toughening agent in contact with the aluminous material. The aluminous material has a primary aspect ratio of at least about 1.5 and a particle size between about 30 nm and about 1000 nm.

Seeded boehmite particulate material and methods for forming same

A boehmite particulate material is disclosed. The material is formed by a process that includes providing a boehmite precursor and boehmite seeds in a suspension, and heat treating the suspension to convert the boehmite precursor into boehmite particulate material. The boehmite particulate material has an aspect ratio of not less than 3:1.

Transitional alumina particulate materials having controlled morphology and processing for forming same

An alumina particulate material is disclosed, including particles comprising transitional alumina having an aspect ratio of not less than 3:1 and an average particle size of not less than about 75 nm. Also disclosed are fabrication techniques based on seeded processing pathways.

Flame retardant composites

A flame retardant polymer composite is disclosed. The composite includes a polymer base material and a flame retardant filler provided in the polymer base material, the flame retardant filler containing seeded boehmite particulate material having an aspect ratio of not less than 3:1.

Method of forming a porous aluminous material

An aggregate material includes an aluminous material and a toughening agent in contact with the aluminous material. The aluminous material has a primary aspect ratio of at least about 1.5 and a particle size between about 30 nm and about 1000 nm.

Antimicrobial compositions, process for preparing the same and use

An antimicrobial composition of titanium dioxide, barium sulfate, zinc oxide particles, and mixtures thereof having successive coatings of silver, in some cases a coating of zinc and/or copper compounds such as zinc oxide, copper (II) oxide and zinc silicate; silicon dioxide; alumina; and a dispersion aid such as dioctyl azelate.

Resin composition

FIELD: chemistry. SUBSTANCE: invention relates to resin composition, which includes two different magnesium compounds and is excellent on mechanical strength and appearance. Described is a resin composition for making moulded articles, containing (i) 100 pts.wt resin (component A), (ii) plate-like magnesium hydroxide (component B), with thickness of crystal (y) of 0.2 mcm or less, and ratio of width to thickness of 20-100, and (iii) needle-shaped basic magnesium sulphate (component C), where said resin (component A) is at least one resin, selected from a group, consisting of thermoplastic resins, thermosetting resins and rubber, total content of components B and C is 1-100 pts.wt, per 100 pts.wt resin, and weight ratio of component B and component C is 0.1-0.9:0.9-0.1. EFFECT: technical result is creation of a composition based on resin which overcomes defects needle-like basic magnesium sulphate and has good balance between mechanical strength, yield and appearance of moulded article. 6 cl, 3 dwg, 2 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C08L 101/00 C01F 5/00 C08K 3/12 C08K 3/30 C08K 7/04 (13) 2 603 369 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014103247/05, 05.04.2013 (24) Дата начала отсчета срока действия патента: 05.04.2013 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 10.08.2015 Бюл. № 22 (45) Опубликовано: 27.11.2016 Бюл. № 33 (73) Патентообладатель(и): КИОВА КЕМИКАЛ ИНДАСТРИ КО., ЛТД. (JP), СИ ВОТЕР КЕМИКАЛ ИНСТИТЬЮТ, ИНК. (JP) R U 05.04.2012 JP 2012-086011 (72) Автор(ы): ООХОРИ Кохеи (JP), МАНАБЕ Хитоси (JP), КУДО Дайсуке (JP), МИЯТА Сигео (JP) 2 6 0 3 3 6 9 (56) Список документов, цитированных в отчете о поиске: JP 63-218747 A, 12.09.1998. US 20030235693 A1, 25.12.2003. US 3508869 A1, 28.04.1970. RU 2389688 C2, 20.05.2010. (85) Дата начала рассмотрения заявки PCT на национальной фазе: 30.01.2014 (86) ...

Magnesium hydroxides having novel structure, process for production thereof, and resin compositions containing them

A novel magnesium hydroxide of the formula Mg(OH) 2 having (i) a strain in the (101) direction of not more than 3.0 × 10 -3 , (ii) a crystallite size in the (101) direction of more than 800 A, and (iii) a specific surface area of less than 20 m 2 /g. The magnesium hydroxide, if desired as coated with anionic surfactants, is useful, for example, as fire retardants for thermoplastic synthetic resins and aqueous paints. The novel magnesium hydroxide is prepared by heating in an aqueous medium at an elevated pressure a novel basic magnesium chloride or nitrate of this invention expressed by the formula Mg(OH) 2-x A x .mH 2 O wherein A is Cl or NO 3 , x is a number of more than 0 but less than 0.2, and m is a number of 0 to 6.

Magnesium hydroxides having novel structure, process for production thereof, and resin compositions containing them

A novel magnesium hydroxide of the formula Mg(OH) 2 having (i) a strain in the <101> direction of not more than 3.0 × 10 -3 , (ii) a crystallite size in the <101> direction of more than 800 A, and (iii) a specific surface area of less than 20 m 2 /g. The magnesium hydroxide, if desired as coated with anionic surfactants, is useful, for example, as fire retardants for thermoplastic synthetic resins and aqueous paints. The novel magnesium hydroxide is prepared by heating in an aqueous medium at an elevated pressure a novel basic magnesium chloride or nitrate of this invention expressed by the formula Mg(OH) 2-x A x .sup.. mH 2 O wherein A is Cl or NO 3 , x is a number of more than 0 but less than 0.2, and m is a number of 0 to 6.

Compatibilization of hydroxyl-containing fillers and thermoplastic polymers

Hydroxyl-containing filler reinforced thermoplastic polymers, such as polyolefins, are disclosed having improved physical properties such as impact strength, break strength and flexural modulus. The filler is compatibilized with a thermoplastic polymer containing labile atoms by mixing the two together in the presence of a coupling agent, such as maleic anhydride and a free radical initiator such as a peroxide catalyst. In a preferred embodiment, clay is coated with polyethylene by mixing the two in the presence of a peroxide catalyst and maleic anhydride and the coated filler is then compounded with additional polyethylene. In another preferred embodiment, a filler is coated with a polyolefin having a high melt index and the coated filler is then compounded with a polyolefin having a lower melt index. Also disclosed are various means for molding the compatibilized composites of this invention.

Method for obtaining precipitated calcium carbonate

Methods and systems for utilizing waste sources of metal oxides

Methods are provided for producing a composition comprising carbonates, wherein the methods comprise utilizing waste sources of metal oxides. An aqueous solution of divalent cations, some or all of which are derived from a waste source of metal oxides, may be contacted with CO2 and subjected to precipitation conditions to provide compositions comprising carbonates. In some embodiments, a combustion ash is the waste source of metal oxides for the aqueous solution containing divalent cations. In some embodiments, a combustion ash is used to provide a source of proton-removing agents, divalent cations, silica, metal oxides, or other desired constituents or a combination thereof.

Microstructured composite particles

Microstructured composite particles obtainable by a process in which large particles are bonded to small particles. The composite particles are preferably used as an additive, especially as a polymer additive, as an additive or starting material for the production of components, for applications in medical technology and/or in microtechnology and/or for the production of foamed articles.