baber/WOPTO huggingface dataset:
Patent WO-9808211-A1 (WO)
Title: Dispositif d'affichage publicitaire decore par une lampe
Inventor: YAN DONGMIN
IPC: G09F21/06
Filed: 1997-05-08
Abstract: Un dispositif d'affichage publicitaire décoré par une lampe comprend un objet suspendu (3), une partie principale (2), laquelle est accrochée à l'objet suspendu (3), un corps lumineux (1), lequel est fixé sur la partie principale (2) selon les mots ou les formes de motifs publicitaires décorés par la lampe, et une alimentation électrique connectée au corps lumineux (1). Ladite partie principale (2) comprend une pièce réticulée constituée d'un polymère léger. La partie principale présente une certaine flexibilité de manière à permettre d'enrouler la pièce réticulée. La partie principale présente également une certaine rigidité de manière que les mots, les motifs et la pièce réticulée ne soient pas déformés, et ladite pièce réticulée ne peut pas être tordue une fois le corps lumineux fixé. Le poids de ce dispositif d'affichage est léger et l'on obtient un bon effet d'affichage.
Patent WO-0110720-A1 (WO)
Inventor: WILKE BERND
IPC: B65B55/04
Filed: 2000-08-03
Abstract: The invention concerns a method for sterile packaging in particular for liquid substances in containers made of synthetic material. Said method is characterised in that it consists in providing a plasma treatment, for example to cartridges for medical use, whereby a selective spatial and/or temporal excitation of the plasma occurs in different zones adjacent to the walls of the container (2) or of the object. The invention also concerns a device designed for implementing the method, in particular when containers made of synthetic material are used, which enables to provide successively the production and subsequent treatment of the containers in situ and to use optimally the vacuum, in the installation zone, when carrying out the plasma treatment of the containers (2) in a chamber (3) where the vacuum can be partially generated.
Patent WO-0124493-A1 (WO)
Title: Verfahren zur verbesserung der erreichbarkeit eines festnetzteilnehmers in einem telekommunikationsnetz
Inventor: GRANZER HERMANN
IPC: H04M7/00
Filed: 2000-09-25
Abstract: Die Erfindung betrifft ein Verfahren, bei dem die an einen ersten Teilnehmeranschluß (10) eines Festnetzteilnehmers gerichteten Rufe auf einen Server (22) umgeleitet werden, eine aktuelle Netzadresse eines weiteren Teilnehmeranschlusses, an dem der Festnetzteilnehmer erreichbar ist, an den Server (22) übertragen wird und der Server (22) entsprechend gespeicherten Einstellungen für eine Weiterleitung von an den ersten Teilnehmeranschluß (10) gerichteten Rufen diese Rufe an den unter der Netzadresse erreichbaren weiteren Teilnehmeranschluß oder an einen Sprachspeicher oder eine Ansageeinrichtung des Telekommunikationsnetzes weiterleitet.
Patent WO-0124857-A1 (WO)
Title: Atemzugskontrolliertes inhalationsgerät für trockenpulver und verfahren zum gleichmässigen verteilen des trockenpulvers in luft
Inventor: GOLDEMANN RAUL
IPC: A61M15/00
Filed: 2000-10-06
Abstract: Der Erfindung, die ein atemzugskontrolliertes Inhalationsgerät für Trockenpulver betrifft, liegt die Aufgabe zugrunde, ein solches Gerät zu schaffen, das sich durch einen einfachen Aufbau, eine geringe Baugrösse und geringe Herstellungskosten auszeichnet, mit einem Doppeldosierschutz ausgestattet ist und eine vollständige und gleichmässige Verteilung des Trockenpulvers während des Inhalationsvorganges gewährleistet. Weiterhin soll ein Verfahren geschaffen werden, welches eine vollständige und gleichmässige lungengängige Verteilung des zu inhalierenden Trockenpulvers in der Atemluft ermöglicht. Diese Aufgabenstellung wird erfindungsgemäss dadurch gelöst, dass die Vorratskammer mit einem Dosierföderer gekoppelt ist, der in den Übergabebereich derart eintaucht, dass unmittelbar am Anfang der Luftführungseinheit eine vorgegebene Menge an Trokkenpulver positionierbar ist und dass die durch die anschliessende Luftführungseinheit strömende Luft eine dreidimensionale mäanderähnliche Form aufweist. Ferner wird die der Erfindung zugrundeliegende Aufgabe dadurch gelöst, dass die infolge der Atmung angesaugte Atemluft derart durch eine Luftführungseinheit geführt wird, dass abwechselnd eine Beschleunigung und ein nachfolgendes Abbremsen des Luftstromes bei gleichzeitiger Verwirbelung und Änderung der Strömungsrichtung erfolgt.
Patent WO-0137376-A1 (WO)
Title: Anordnung zur elektrischen verbindung zwischen chips in einer dreidimensional ausgeführten schaltung
Inventor: ZELSACHER RUDOLF
IPC: H01L21/00
Filed: 2000-11-09
Abstract: Die Erfindung betrifft eine Anordnung zur elektrischen Verbindung zwischen Halbleiterchips (5, 6, 7), die in einer dreidimensional ausgeführten Schaltung angeordnet sind. Bei dieser Anordnung werden leitende Kanäle zwischen einander gegenüberliegenden Oberseiten der Halbleiterchips (5, 6, 7) mittels Thermomigration eines leitenden Materials erzeugt.
Patent WO-0137442-A1 (WO)
Title: Method for signal transmission in a radio communication system
Inventor: GUSTRAU JOERG
IPC: H04B1/707
Filed: 2000-11-16
Abstract: The invention relates to a radio communication system that uses a TD/CDMA subscriber separation method and whose radio interface is organized according to a TDD method. The signals transmitted uplink from a subscriber station are evaluated by a base station in a channel estimation step. The base station then predistorts the data and a training sequence of a burst to be transmitted to the subscriber station in the downlink direction. The subscriber station chooses a receiving method suitable for the receipt of the data elements on the basis of a channel impulse response of the known training sequence.
Patent WO-0153897-A1 (WO)
Inventor: KUCERA MARKUS
IPC: G05B9/03
Filed: 2001-01-10
Abstract: The invention relates to a method for preventing malfunctions in a signal processing system according to which a sequence of initial values (w) are read-in by an arithmetic unit (P1; P2; P3). An additional separate trend value logic unit (4) determines a trend value (T) from the initial values (w). An output value (y) and a trend value (T) are formed by the arithmetic unit (P1; P2; P3). If the trend values (T) determined by the arithmetic unit (P1; P2; P3) and by the trend value logic unit (4) coincide, the output value (y) is output. The invention also relates to a processor system which is used for carrying out such a method and which comprises at least one arithmetic unit (P1; P2; P3), one comparison device (3; 5) and one trend value logic unit (4).
Patent WO-02091653-A1 (WO)
Title: Verfahren und vorrichtung zur datenübertragung in einem multiträgersystem mit paralleler concatenierter kodierung und modulation
Inventor: BOLINTH EDGAR
IPC: H04L1/00
Filed: 2001-05-08
Abstract: Die Erfindung betrifft eine Sende- und Empfangsvorrichtung (1, 3) zur verbesserten Datenübertragung in einem Multiträgersystem sowie ein zugehöriges Verfahren, bei dem eine verkettete Codierung verwendet wird. Ein Sender (1) weist hierbei eine erste Codierstufe (4), eine Sende-Demultiplexerstufe (5), eine zweite Codierstufe, eine Modulatorstufe (6), eine Sende-Multiplexerstufe (7) und einen Multiträger-Modulator (8) auf, wobei die Sende-Demultiplexerstufe (5) und die Sende-Multiplexerstufe (7) von einer Bitladevorrichtung (9) gesteuert werden. In vergleichbarer Weise besitzt der Empfänger (3) einen Multiträger-Demodulator (10), eine Empfangs-Demultiplexerstufe (11), eine erste Decodierstufe (12), eine Empfangs-Multiplexerstufe (13) und eine zweite Decodierstufe (14), wobei wiederum die Empfangs-Multiplexerstufe und -Demultiplexerstufe (13, 11) von der Bitladevorrichtung (9) angesteuert werden.
Patent WO-2004001300-A1 (WO)
Inventor: WIDEMANN FRITZ
IPC: F24H3/06
Filed: 2002-06-20
Abstract: The invention relates to a heat-generating apparatus comprising a reactor that is provided with a reaction chamber (2, 30), and a heat exchanger (8), by means of which heat generated in the reaction chamber (2, 30) can be transferred to a liquid or gaseous heat transfer medium (4, 37). The inventive apparatus is characterized by the fact that the area of the heat exchanger (8), which can be penetrated by the heat transfer medium (4, 37), is provided with a temperature sensor (15) that is arranged such that conduction of heat between the heat exchanger (8) and the temperature sensor (15) is largely prevented.
Patent WO-03073362-A1 (WO)
Title: Verfahren zur kodierung einer sequenz von datenbits, insbesondere zur übertragung über eine luftschnittstelle
Inventor: CUYLEN MICHAEL
IPC: G06K7/00
Filed: 2003-02-17
Abstract: Bei dem erfindungsgemäßen Verfahren werden zur Kodierung einer Sequenz von Datenbits B1-B5, welche einen logischen Ein- oder Auswert 1,0 aufweisen, in eine Sequenz von Zeitschlitzrahmen FR1-FR5 geordnet, wobei diese Zeitschlitze ZS11-ZS14 aufwei-sen, die einen Ein- oder Auswert Z1,Z0 annehmen können. Die Kodierung erfolgt in einem Zeitschlitzrahmen so, dass zumin-dest ein Zeitschlitz mit einem Auswert vorbelegt ist, die nicht vorbelegten Zeitschlitze zur Bildung des logischen Ein- oder Auswertes eines Datenbits mit Ein- oder Auswerten belegt werden, und einem Zeitschlitz mit einem Einwert mindestens ein Zeitschlitz mit einem Auswert folgt. Die Erfindung betrifft weiterhin ein Identifikationssystems IS mit einem Schreib-/Le-segerät SLG und mindestens einem mobilen Datenspeicher DT1-DT3 zur Durchführung des Verfahrens. Damit ist der Vorteil verbun-den, dass bei einer komplementären Kodierung eines Datenbits in einen zugehörigen Zeitschlitzrahmen eine sofortige Kollisi-onserkennung C möglich ist. Das Verfahren kann vorteilhaft in einem ISM-Frequenzband von 13,56 MHz zur berührungslosen Da-tenübertragung auf induktiv gekoppeltem Wege verwendet werden.
Patent WO-2004021547-A1 (WO)
Title: Streifenförmige lamelle sowie ständerblechpaket für eine elektrische maschine
Inventor: PFLUEGER KLAUS
IPC: H02K1/16
Filed: 2003-07-30
Abstract: Es wird eine streifenförmige Lamelle (10) für einen Ständer einer elektrischen Maschine vorgeschlagen, wobei die streifenförmige Lamelle an je einem Streifenende (18) je eine Endkontur (19) aufweist. Die Endkonturen (19) sind derartig ausgebildet, dass ein durch eine Biegung bedingter Längenunterschied an der Lamelle (10) ausgleichbar ist.
Patent DE-1917632-A1 (DE)
Title: Plastics lined paper bag from sleeve and - web combination
Inventor: KALLWEIT WILLI
IPC: B31B70/00
Filed: 1969-04-05
Abstract: Continuous thermoplastics liner sleeve is cross-welded at bag length intervals and wrapped by one or more paper webs so that the combined strip can be cut out into singles of required length by incisions close to the welds. The resultant bag is sealed shut at the end with the weld. The cutter is activated by a feeler probing the weld to ensure exact lengthing of the sleeve.
Patent DE-1937973-A1 (DE)
Title: Winding thermosetting resin impregnated glass fibres on - plastics tubes
Inventor: LANG GEORGE
IPC: B29C53/80
Filed: 1969-07-25
Abstract: Reinforced plastics tube are produced by winding onto the outer surfaces of the tubes thermosetting resin impregnated glass fibre which are wound in close coils, which are disposed at right angles to the longitudinal axis of the tubes, whereby the last coil of a wound layer is attached to the first coils of an adjacent layer.
Patent DE-1959342-A1 (DE)
Title: Anhydrous or aqs paste dyestuff composition for dyeing - printing polyester cellulosic fibre mixtures
Inventor: FRED MUELLER DR
IPC: C09B67/24
Filed: 1969-11-26
Abstract: Anhydrous or aqs paste dyestuff composition for dyeing printing polyester / cellulosic fibres mixtures. M2A. Contain finely disprsed dyestuffs, water-sol. reactive dyestuffs and dispersants and/or emulsifiers. Preferred dispersants are salts of finaphthylmethane disulphonic acid, and esp. the Na salt, as emulsifiers, non-ionic cpds. e.g. those obtained by condensing 1 mol. of an organic substance with up to 40 mol. ethylene oxide, and cationic cpds. e.g. long chain alkylamine salts, are preferred. The preferred active and dispersed dyestuffs are stable over several weeks at pH 7 and temps. above 50 degrees C. Pref. the compositions contain 10-40 pt. reactive dyestuff, 10-40 pt. dispersed dyestuff 20-60 pt. dispersant and 0-5 pt. emulsifier, aqs. compositions contain 10-30 pt. reactive dyestuff, 10-30 pt. dispersed dyestuff, 5-30 pt. dispersant, 0-20 pt. emulsifier and 75-25, pref. 50-30 pt. water. The compositions may be prepared by mixing the finely ground dyestuffs (of particle size 0.01-3, esp. 0.1-1.5 mu) with the dispersants and/or emulsifiers and opt. with water. Yellow, red, blue and blue-green shades are obtainedon polyester/cotton mixtures.
Patent DE-2007430-A1 (DE)
Title: Foamed plastic curtain bar and rail
IPC: B29C44/12
Filed: 1970-02-18
Abstract: Foamed plastic curtain support bar, with inset curtain rail and opt. with integral pelmet, is formed by fixing the curtain rail itself (e.g. a U-shaped hollow section) inside a mould, then foaming plastic, esp. polyurethane, in the mould and hardening it.
Patent DE-2040065-A1 (DE)
Title: Small diam double screw extruder - for pastes and plastics
Inventor: FIEBICH HANS
IPC: B29C48/40
Filed: 1970-08-12
Abstract: A double screw extruder esp. for thermplasts, with small screw diam. is approx 20 mm. having one screw in extension of the coil axis on the side of the inlet and the other on the side of the outlet. The design does not suffer from normal disadvantages found in extruders with diam. 28 mm.
Patent DE-2049831-A1 (DE)
Title: 2 6 - dichloropyridine derivs prepn - by halogenating pyridine or pyridine carbonitrile derivs, used as dyestuffs, intermediates
IPC: C07D213/85
Filed: 1970-10-10
Abstract: Cpds. of formula (I): (where R' is H or 1-8C alkyl; R2 is H, 1-8C alkyl, pehnyl, chlorophenyl, bromophenyl, tolyl, ethylphenyl, anisyl, ethoxyphenyl, cyanophenyl, nitrophenyl, 2-5C carbalkoxy or 3-6C carbalkoxymethyl; R3 is H or nitrile gp) are prepd. by halogenating a cpd. of formula (II); (where R is H or opt. substd. 1-8C alkyl; R3 is H nitrile or carbonamide) in the presence of a basic N cpd. e.g. pyridine, or in the absence of a basic N cpd. when R = H. Cpds. (I) where R3 is CN are new.
Patent DE-2060779-A1 (DE)
Title: Winding electric conductors - with electroinsulating coating still in soft state
Inventor: RUPPERT WILHELM
IPC: B05D7/20
Filed: 1970-12-10
Abstract: Synthetic resin lacquer contg. 50 - 90% of solids is applied by spraying or dipping, and dried or heated only to such extent that the coating is still soft-elastic; then the conductor (esp. a copper wire or strip) is wound (e.g. in an electric apparatus) and subjected to a brief heating to cure the lacquer. Internal stresses in the wound coating are eliminated by this method.
Patent DE-2103119-A1 (DE)
Title: N-substd-2,3-diphenyl-allylamines - prepn from the corresp alcohol via the bromide
IPC: C07D295/02
Filed: 1971-01-23
Abstract: N-Substd.-2,3-diphenyl-allylamines of formula: (where R1 is Cl or Br; R11 is H or lower alkyl; R3 and R4 indep. = H, lower alkyl, aralkyl (with Cl-3-alkyl) or NR3R4 = a six-membered ring which may be broken by an O atom or an imino gp. substd. with Ph or lower alkyl). The cpds. are drugs acting on the circulation with hypotensive, anti-arrhythmic, local anaesthetic, and coronary and cerebral dilatating props. Prepn. is by bromination of 3-Cl-2,3-diPh-allyl alcohol with PBr5 or 40% HBr in glacial acetic acid then racting the Br cpd. with an amine HNR3R4. Suitable amines are mono and di 1-4C alkylamines, Bz, Ph-Me, Ph-Pr amines and morpholine, piperidine, piperazine, 4-Me(or Pr, Bu, Ph)-piperazines.
Patent DE-2115369-A1 (DE)
Title: Printed circuits with glass or ceramic platelets - printed with the conducting layer using a silicone rubber layered roller
IPC: B41N10/02
Filed: 1971-03-30
Abstract: Thin layer circuits are printed onto glass or ceramic platelets uniformly and with sufficient thickness by transferring the noble metal/resin paste from the etched block to the platelets using a roller coated with silicone rubber. The rollers and the base for the platelets are pref. heated.
Patent DE-2133152-A1 (DE)
Title: Hydrogen-free halomethanes prodn - from mixt of hydrogen - contg a non-hydrogen contg halomethanes
Inventor: JENKNER HERBERT DR
IPC: C07C17/20
Filed: 1971-07-03
Abstract: In parent patent, prepn. of H-free halomethanes is by reaction of F-contg. H-free halomethanes in the presence of a Friedel-Crafts catalyst, the reactants being mixed with >=1 H-free halomethane of different molecular compsn. Here, in place of, or in addition to the H-free halomethane of different molecular compsn. there is used a halomethane with 1-3 H-atoms in the molecule as well as Cl or Br atoms. The cpds. are used in fire-extinguishers and as propellant gas in the prepn. of polyurethane foams.
Patent DE-2141175-A1 (DE)
Title: Spheroidal cast irons - strengthening by thermal and nitriding processes
Inventor: SEMENOW ROBERT A
IPC: C21D5/00
Filed: 1971-08-17
Abstract: Articles cast from spheroidal graphite cast irons can be strengthened by a thermal treatment consisting of heating to 880-920 degrees C to completely austenitise if possible, followed by ageing or tempering at 600 degrees C. This thermal treatment is then followed by nitriding at 550-600 degrees C using gas liquid or ionic nitriding agents. The material can then be further hardened by shot blasting, or following removal of the nitrided layer, by pressure hardening in areas where most operative stresses are expected. Material treated in this way finds particular application for internal combustion engine parts partic. where high wear resistance and high fatigue resistance is required, e.g. crankshafts cylinder liners, gear wheels, etc.
Patent DE-2153577-A1 (DE)
Title: Plastic tube - with cellular walls,with closed pore surfaces, reinforced by pleating or similar
Inventor: HERINGHAUS GERHARD
IPC: B29C49/00
Filed: 1971-10-27
Abstract: The plastic granules contg. a foaming additive are extruded into a thin walled tube which is then reinforced by ribbing waving or pleating the walls in a press or blow moulding process. Pref. the walls are is not >1/30 of the tube dia.
Patent DE-2155694-A1 (DE)
Title: Basic monoazo quaternized dyes - from heterocyclic diazo components and subst p-phenylene diamines
IPC: C09B27/00
Filed: 1971-11-09
Abstract: The dyes are of formula: D-N=N-K-Z, (in which D is a 5- or 6-member ring with >=1 condensed aromatic ring, >=1 quaternised N atom in the ring and 1, 2 or 3 conjugated double bonds to the C atom attached to the azo group; K is a benzene or naphthalene group, which in the o-position to the azo group, carries a S-contg. electronegative substnt. Y, whose Hammett constant is >=0.28; Z is a pri., sec. or tert. amino group in p-position to the azo group). D is pref. a benzthiazole-2-yl, indazole 3- or 6-yl, 2, 1-benzisothiazole 3-yl, naphtho-11,21,4,5-thiazole 2-yl, benzimidazole 2-yl, quinoline 2- or 4-yl, isoquinoline 1-yl, or the corresponding benzoxazolyl, benzselenazolyl, naphthoxazolyl or naphthselenazolyl group. Examples of Y are sulphonamide and thiocyanate groups. The dyes are suitable for polyacrylonitrile and anionic-modified polyamide.
Patent DE-2155924-A1 (DE)
Title: Granular fertilisers coated with phenolic resin - giving prolonged release and improved stability
Inventor: OMURA YOSHIHIKO
IPC: C05G3/00
Filed: 1971-11-10
Abstract: Solid fertilizer particles are treated with a coating compsn. contg. (1) a water-soluble phenolic resin of the resol type having a water-tolerance of is not 1 obtained by condensation of phenol (100 parts) and formalin (130-300 parts) in the presence of NAOH as catalyst, (ii) an organic acid with a dissociation constant of 2x10-4 as hardener, and (iii) a filler, and the coating compsn. is solidified by heating to 100-130 degrees C to yield coated granular fertilizers which remain intact even after being in the soil for prolonged periods but which absorb water at a controlled rate so that fertilizer is released over a prolonged period.
Patent DE-2207394-A1 (DE)
Title: Electrical connector - made from pressure cast, chilled and pore sealed zinc alloy
Inventor: HAEGERT CLARENCE B
IPC: H01R43/20
Filed: 1972-02-17
Abstract: Storage battery terminal connector is made from a zinc alloy of compsn. (% wt): 3.5-4.5 Al, 0.02-0.10 Mg, is not >0.10 Fe, is not >0.007 Pb, is not >0.005 Cd, is not >0.005 Sn, is not >3.5% Cu, bal. Zn, by pressure casting, rapidly chilling and treating in a trichloroethylene-carbon tetrachloride bath to seal the pores. The zinc alloy is cheaper and has better electrical conductivity than prior art leaded brasses and copper alloys. The connector has good corrosion resistance even to sulphuric acid, and has good tensile strength.
Patent DE-2244883-A1 (DE)
Title: Coke oven wall repair template - forming exact replica of joints between spalled bricks
Inventor: KNAPPSTEIN JOHANNES DR
IPC: C10B29/06
Filed: 1972-09-13
Abstract: Spalled bricks in the crowns and heating walls of coke oven chambers are repaired (after the carbon deposit has been removed by burning-off with oxygen) by applying a template to the wall to cover the joints and leave the brick surfaces free and ramming silica or fireclay refractory over the spalled areas. After removal of the template, the joints are filled out by mortar. Durable repairs; no tendency to spall off again; same material as original bricks and mortar can be used.
Patent DE-2309577-A1 (DE)
Title: Substitute wood fibre made from plastics - by coiled extrusion of polystyrene contg. expanding agent
Inventor: URBAN MANFRED
IPC: B29C44/02
Filed: 1973-02-26
Abstract: Substitute wood fibre is made from plastics as follows: polystyrene, still plasticised, is continuously extruded to give spiral strand, an expanding agent having been introduced just before extrusion. When sufficient shear strength has been reached by cooling, the coils of strand are cut into pieces of >=1, pref. 2 turns. The pref. density is 600-800 kg/m3.
Patent DE-2317281-A1 (DE)
Title: (Cyclo)aliphatic alpha-nitroketone prepn. - from ketones and alcohol mixtures eg cyclohexanone and cyclohexanol
Inventor: WEITZ HANS-MARTIN DIPL CHEM DR
Filed: 1973-04-06
Abstract: (Cyclo)aliphatic alpha-nitroketones are prepd. by reacting the corresp. ketones in the liq. phase with highly conc. HNO3 contg. 5 wt.% water, in inert, org. solvents, at 50 degrees C, according to parent patent, is modified by replacing the pure ketones by mixts. of ketones and corresp. alcohols, e.g. mixt. of cyclohexanol and cyclohexanone obtd. directly from cyclohexane oxidn. Process is suitable for prepn. of alpha-nitrocyclohexanone, with cyclohexylnitrate as useful by-prod., e.g. as ignition accelerator in diesel fuels and as heating oil additive.
Patent DE-2329041-A1 (DE)
Title: TV camera electron beam aligning system - enables standard cameras to be used to read goods tickets
Inventor: MAHNE FRIEDRICH
IPC: G06K7/10
Filed: 1973-06-07
Abstract: The electron beam is aligned onto a ticket on an item of merhandise for automatic scanning of coded data on the ticket. When a ticket appears in the scanning range of the camera, the latter is rotated pref. stepwise through one or more angular steps depending on the position of the ticket, the camera may be mounted on a step motor shaft. Each angle is equal to or smaller than the diagonal angle of the code filed of the data carrier.
Patent DE-2344829-A1 (DE)
Title: Water-dispersible aluminium oxide prepn - contg a metal salt, pref. chloride or nitrate of aluminium, iron, chromium or tin
Inventor: WEIMER DEAN R
IPC: C01F7/36
Filed: 1973-09-05
Abstract: Aluminium oxide, esp. alpha-aluminium oxide monohydrate produced by hydrolysis of an aluminium alcoholate, is rendered dispersible in water by dry-mixing it with a salt to produce a preparation contg. 99.9-66.67 wt.% of aluminium oxide monohydrate and 0.1-33.33 wt.% (pref. 3-10 wt. %) of a salt having the formula MX, in which M is a metal whose hydroxide is scantily soluble (its solubility product is less than 10-20) and X is an anion derived from a monobasic acid whose ionisation constant exceeds 10. This method is superior to the conventional dispersing of Al2O3 in water by treatment with an acid resulting in corrosion of containers. They dry alumina-salt mixture is easy to transport and handle.