baber/WOPTO huggingface dataset:
Patent CH-583142-A5 (CH)
Title: Vehicle fuel tank filling pump - has dip tube carrying pump and electric motor powered by vehicle battery
IPC: B67D7/04
Filed: 1974-06-21
Abstract: The device for transferring liquid from one container to another is intended especially for filling the fuel tank of a vehicle from a larger container. It has a delivery tube (7) with a fitting which can be screwed into the container, incorporating its own pump (5) and electric drive motor (6). A dip tube (3) inserted through the opening (2) in the container has a screwed portion (4) to engage the opening, with the pump and motor mounted immediately above, and the delivery tube (7) terminates in a discharge nozzle. A lead (12) connecting the motor to the vehicle battery has an extension (13) along the delivery tube, connected to a motor switch (11) mounted immediately behind the nozzle (8).
Patent BE-1008857-A5 (BE)
Title: Procede pour purifier des solutions de polycarbonates et de polyestercarbonates.
Inventor: FENNHOFF GERHARD
IPC: C08G63/64
Filed: 1994-04-13
Granted: 1996-08-06
Abstract: L'objet de la présente invention concerne la purification de solutions polycarbonates et de polyestercarbonates au moyen d'aluminosilicates. L'objet de la présente invention concerne, en outre, les polycarbonates et/ou les polyestercarbonates que l'on obtient conformément à l'invention.
Patent CH-612659-A5 (CH)
Title: Dry free-flowing material for rough-casting or plastering interior and exterior walls of buildings
Inventor: FRITZ HANS
IPC: C04B28/02
Filed: 1977-09-01
Abstract: The dry free-flowing material contains: 46.56 % by weight of cement  6.32 " "   "     of hydrated lime  8.84 " "   "     of aluminium silicate as adhesion promoter  2.95 " "   " of polystyrene or polyurethane in particulate form having a particle size from 0.7 to 5 mm  1.89 " "   "     of foamed polystyrene or polyurethane in the form of                   granules of the size of poppy seeds or semolina or                   1% +/- 0.1% of sawdust of foamed polystyrene or polyurethane, the remainder being polystyrene in a granulated form of a mean particle size of about 0.5 mm 10.84 " "   "     of perlite 21.97 " "   "     of pumice of semolina size  0.46 " "   "     of methylcellulose for providing flexibility  0.17 " "   "     of hydrophobic agent   The values may be 1/10 greater or smaller than those given. The material is readily processable, for example by means of a blasting tube, and leads to water-repellent, heat-insulating coatings with few shrinkage cracks or none at all.
Patent CH-573205-A5 (CH)
Title: N-phenyl polycyclic imides - useful as pesticides, esp insecticides prepd from cycloheptatriene and a 1,2,4-triazolidin-3,5-dione
IPC: C07D487/18
Filed: 1972-09-01
Abstract: Compounds of formula (I):- (where Y is Cl, CN or CF3 and m is 1, 2 or 3) are prepared by reacting compounds of formula (II):- with cycloheptatriene of formula (III):- in the presence of an oxidizing agent, pref. lead tetraacetate, lead dioxide or manganese dioxide.
Patent CH-600225-A5 (CH)
Title: Flexible wire reinforced hose mfg. equipment
Inventor: FOERG JOSEF
IPC: F16L11/12
Filed: 1976-10-14
Abstract: Flexible wire reinforced hose mfg. equipment winds elastomer strip and wire mandrel followed by hose and cord leaving bulges in hose
Patent CH-601991-A5 (CH)
Title: Alkenyl- and alkenynyl-alkoxy diphenyl ether derivs
Inventor: KARRER FRIEDRICH DR
IPC: A01N31/14
Filed: 1974-10-24
Abstract: Alkenyl- and alkenynyl-alkoxy diphenyl ether derivs prepd e.g. by reacting 4-(halo-alkoxy)-diphenyl ethers with alkenols or alkynols (BE230476)
Patent CH-571712-A5 (CH)
Title: Imbalance monitor of oscillating centrifuges - has support element for nozzle on movable centrifuge housing
IPC: B04B9/14
Filed: 1973-11-20
Abstract: The nozzle is connected to a pressure gas source. The support element is designed as a plate (2) featuring a conical or spherical indentation (3). A ball (4) is seated in the indentation (3) as a movable mass and a pre-tensioned leaf spring (5) presses the ball (4) into the seating. The nozzle (6) terminates in the centre of the indentation (3). Bellows (23) are provided in order to strengthen the pre-tension of the leaf spring (5) as the number of revolutions of the centrifuge increase. The pneumatic pressure applied to the interior space of the bellows (23) increases as the number of revolutions of the centrifuge increase.
Patent CH-575637-A5 (CH)
Title: Non-volatile memory cell - has floating gate conductor layer between isolation layers
IPC: H01L29/792
Filed: 1973-12-20
Abstract: Non-volatile reprogrammable semiconductor read-only-memory device comrpises (a) a substrated at one conductivity type; (b) first and second pockets of opposite conductivity type within the surface of said substrate, the pockets being separated by a channel region of the substrate; (c) a first isolation layer overlying the first and second pockets of opposite conductivity; (d) a floating gate conductor layer overlying the isolation layer above the first and second pockets; (e) a second isolation layer overlying the gate conductor layer, thereby electrically isolating the floating gate metal layer; and (f) hole injector means underlying said floating gate conductor layer comprising a p-n junction adapted for avalanching.
Patent CH-559289-A5 (CH)
Title: Harbour wall ie protecting mooring from the sea - is pile supported inverted asymmetrical leg diverging U of precast reinforced concrete elements
IPC: E02B3/06
Filed: 1972-12-15
Abstract: The harbour wall approximates in cross section to an inverted U section with assymetric diverging legs, supported on piles and made of precast reinforced concrete slab units. The hollow interior (6) functions as a "swell" absorber and the piles (7, 8 etc.) adapt the principle to poor foundation conditions, being driven into the sea bed (2). The short leg of the U (34) slopes at say 10 deg. to the vertical faces the harbour and is formed by one slab, and the longer leg sloping at say 20 deg. to the vertical, formed by two slabs (35, 36) abutting at a horizontal step (24, 26). Three transversely spaced braces (31, 32, 33) on the piles support slab end bearing longitudinal capping beams (37 etc.). The upper wall slabs (34, 35) bear against one another to form a horizontal top (19) to the wall.
Patent CH-612259-A5 (CH)
Title: High-voltage generator for gas lighter
Inventor: KONDO KANEICHI
IPC: F23Q3/00
Filed: 1976-06-16
Abstract: The high-voltage generator for a gas lighter is provided with an external insulating housing (1) which contains a piezoelectric element (3, 5), one end face of which bears against a support part (6) and the other end face of which bears against an impact part (2). Mounted displaceably in the external insulating housing is an internal housing (12) which contains a spring-loaded hammer (14) for impact action on the impact part. One internal face of the external housing is provided with a cam groove (7), with which a pin (16) mounted on the hammer can be brought into and out of engagement. By means of the consequently closed interior of the external housing, impact noises are moderated, when the hammer strikes the impact part (2). By means of the sliding fit between external housing and internal housing, a dust protection for the piezoelectric element mounted in the external housing is obtained. <IMAGE>
Patent FR-2063366-A5 (FR)
Title: Gaseous chlorination of minerals
IPC: C22B1/08
Filed: 1969-10-13
Granted: 1971-07-09
Abstract: Minerals are subjected to a gaseous treatment using HCl, a reductant, and opt. a solid chlorination agent. The HCl is mixed with other gases, pref. =50% vol. CO2, 25% water vapour, 5% O2, 5% Cl2 and N2 is not >3 times the vol. of the HCl. The gases of different compn. are injected at different points in the furnace to fluidise the charge and provide efficient sepn. of metal values. Minerals with volatile metal values are treated efficiently and economically as most of the material can be regenerated and/or recycled.
Patent FR-2059001-A5 (FR)
Title: Water preparation and purifying plant
IPC: C02F1/52
Filed: 1970-08-19
Granted: 1971-05-28
Abstract: Water preparation and purifying plant Based on a rectangular ground plan, the plant consists of four zones for the agitation of the water, treatment of the water with a suspension of org. chemical flakes, sediment removal zone, and pure water zone where it can be drawn off for use. Connections between the zones are provided by slits.
Patent FR-2062261-A5 (FR)
Title: Metal extraction from solid or molten
IPC: C22B7/00
Filed: 1970-09-17
Granted: 1971-06-25
Abstract: At least one metal component is extracted from a solid or molten metal mixture by adding to the mixture, at raised temp., a molten additional metal (A) in which the component(s) dissolve at the given temp. Molten (A) containing the dissolved component(s) is cooled to an extent such that component(s) separate from soln. and is/are recovered as precipitate. Pref. for extracting first and second component, molten (A) is further cooled, after recovering first component, until second component precipitates from soln. Process is used for extraction of Fe, Cu, Cr and/or Co from alloys, pref. using Bi or Pb-Bi eutectic as (A).
Patent FR-2062445-A5 (FR)
Title: Dimethylformamide softener in polyacrylo- - nitrile compns
IPC: D01F6/18
Filed: 1970-09-21
Granted: 1971-06-25
Abstract: The softener is incorporated by polymerising the monomer mixture in the presence of 20%, pref. 8 - 18%, of DMF for >1 hour, with addition of chain-regulators such as mercaptans. The composition is melt-spun through an extruder. Homogeneous, plasticised polymers, which can easily be extruded, are obtained. Relatively low concentrations of DMF are used. Solvent-recovery is avoided. Profiled polyacrylonitrile fibres can be produceD.
Patent FR-2083004-A5 (FR)
Title: Compression assembly for filter discs shaft - mounted in pressure tank
IPC: B01D29/41
Filed: 1970-12-01
Granted: 1971-12-10
Abstract: A splined or keyed sleeve which slides on the shaft is used to pass through the pressure gland at the top of the vessel. It is clamped down against a sealing gasket on the topmost filter disc by screws anchored in a collar retained by a circular retainer in a groove outside the pressure vessel.
Patent FR-2134808-A5 (FR)
Title: Insecticidal ddvp compsns - stabilised with styrenes and derivs to give prolonged activity
IPC: A01N25/22
Filed: 1971-04-21
Granted: 1972-12-08
Abstract: Dimethyl dichlorodivinyl phosphate (DDVP) insecticidal compsns. with prolonged activity are prepd. by treating the surface of the DDVP carrier compsn with >=1 cpds. of formula: The substits are such that the cpds. included are styrenes, stilbenes, cinnamic acid, cinnamic aldehyde and cinnamic acid esters, butadienes, pentadienes, chalcones, and benzylidene, substd. cyclic cpds. such as indan cyclohexane, menthane bornane, fluoren. The prefd. proportion of stabilisers is 0.5 to 4% of the wt. of DDVP.
Patent FR-2151471-A5 (FR)
Title: Synthesis gas generation - by partial oxidn of hydrocarbon liquids
IPC: C01B3/50
Filed: 1971-08-30
Granted: 1973-04-20
Abstract: Synthesis gas (CO + H2) is made by non-catalytic process comprising partial oxidn. of liquid hydrocarbon fuels with oxygen-rich gas and steam. Process is economic in that steam generation is by cooling of effluent streams and hydrocarbon feed is used as a first scrubbing agent. Also, any oil loss in a second stage water scrubbing is recovered, and removal of carbon from quench water as in prior art processes is not required. Reaction is carried out in unpacked reactor at 1800-3000 degrees F. The effluent is first cooled to 400-550 degrees F (above dew point of water) by indirect heat exchange, and then scrubbed with 1-10 gals hydrocarbon fluid per 1000 cu. ft. gas (where fluid is fresh liquid hydrocarbon fuel) at temps. above the dew point of water in effluent gas to remove particulate carbon, followed by recycle of the fluid-carbon slurry as feedstock for the process. Also the effluent may be further scrubbed with water (1-10 gals/1000 cu. ft) at 100-500 degrees F to condense any hydrocarbon vapours, the liquid prod. then being heated and fed to the reaction zone. All process stages are operated at about equal press. in range 100-3000 psig.
Patent FR-2116124-A5 (FR)
Title: Ball mill reaction vessel - for viscous materials
IPC: B01F13/00
Filed: 1971-11-26
Granted: 1972-07-07
Abstract: Reaction vessel, mixer or crystalliser is for handling liquids even of high viscosity which have the tendency to stick to the walls and block the vessel. The unit is a ball mill consisting of cylindrical jacketted vessel divided into three or four sections by perforated plates. The vessel is supported on two end bearings over a trough. Liquid enters the hollow shaft at one end and leaves through a similar shaft at the other end. Heating or cooling media is introduced through jacket surrounding the shaft. Each compartment has a branch for introduction and discharge of the balls. Separation plates are recommended to have radial slits between first and second compartment and circular perforations between second and third. The balls must be inert, nonshatter material, heavier than the liquid, such as steel, ceramic and be coated with e.g., rubber. Diameter of the balls should be 5 to 10% of the vessel which should contain 30 to 80% of the balls and 40 to 60% of reacting liquids. The vessel should operate at 0.2 to 0.5 the speed of the corresponding ball mill used for partial reductions.
Patent FR-2166714-A5 (FR)
Title: Microwave oven - operates with doors closed to contain radiation hazard
IPC: H05B6/78
Filed: 1972-01-05
Granted: 1973-08-17
Abstract: Microwave oven partic. for rapid and cooking, blanching, sterilising, drying, thawing etc. of foodstuffs. The oven has entry and exit door-ways and a conveyor to move the product into the oven, hold it there for processing and then bring it out through the exit, both doors being fully closed during the processing period; pref. the energy source, e.g. klystron, cannot be energised if either door is even slightly open, this being detected by microswitches. No radiation escapes from the oven and it is impossible for an operator to insert his hand while the power is on.
Patent FR-2229295-A5 (FR)
Title: Chain support for bicycle with wheels removed - has chain carrying pulley and is mounted between rear forks
IPC: B62M9/16
Filed: 1973-05-10
Granted: 1974-12-06
Abstract: Chain support is an axle that is mounted in the rear forks of a bicycle. It has on the chain carrying side a stop recessed to fit on one side of the forks, a chain-carrying pulley capable of axial movement and a hand operated clamp nut. On the other end is a reduced diameter to enter the fork with a hand operated nut on each side. The chain is placed on the pulley, the axle is positioned in the forks, one side between stop and pulley and the other between the two nuts, and is clamped by the three nuts. A support, composed of the chain-side details only mounted on a half-axle, may alternatively be used.
Patent FR-2238339-A5 (FR)
Title: Reflective folding warning triangle - jointed two arm base connects to triangle at one of its apex
IPC: G09F13/16
Filed: 1973-07-20
Granted: 1975-02-14
Abstract: There are three identical arms (1) (2) (3) pf plastics, fitted with reflectos. At the end of arm (1) is a rivet (18) and a flexible stirrup (4) which is oblique to (1). This stirrup joins two feet (5) and (6) having two bends (7) and (8) . This enables them to be folded without fouling. At the end of arm (1) and arm (9) has a gusset (10) and is fixed to (1) by a rivet (11). Arm (1) is reinforced on its full length for weight and rigidity of the base and fixed by rivets (11) and (18). Gusset (10) permits slight rotation of arm (9) and a simple and secure join with arm (2).
Patent CH-694007-A5 (CH)
Title: Strain-inducing conical screw for stimulating bone transplant growth
Inventor: SESIC NENAD
IPC: A61F2/28
Filed: 1998-10-06
Abstract: A differential and/or conical screw of variable increasing pitch is used for initial mechanical stimulation of a healthy bone e.g. tibial dyaphisis, to induce new internal strain and consequential biological reaction of the bone. The reaction results in formation of new, young superficial bone and takes approximately 4 to 8 weeks. The new bone is then used as an autologous bone transplant. The screw implantation into the bone process is controlled by a special moment key.  The transplantation of the bone into other parts of the body is referred to as adaptive periosteal cambiplasty.
Patent DD-149084-A5 (DD)
Title: Verfahren zur verminderung des fremdstoffgehaltes in aluminiumlegierungsschmelzen
Inventor: SZABO LAJOS
IPC: C22B21/06
Filed: 1980-02-06
Abstract: Die Erfindung bezieht sich auf die Verminderung bzw. Beseitigung des Alkalimetall- und Wasserstoffgehaltes sowie des Oxydgehaltes in Schmelzen von Aluminiumlegierungen. Durch die Erfindung wird ein sehr wirtschaftliches und automatisch regelbares Verfahren vorgeschlagen, welches keine weiteren Verunreinigungen durch den Luftsauerstoff waehrend der Behandlung zulaeszt und den Aluminiumgehalt in der Schlacke auf ein Minimum reduziert. Das Wesen der Erfindung besteht darin, dasz ein, mit einem Chlorgas erzeugendes Pulver angereichertes Inertgas, vorzugsweise Stickstoff, in Abwesenheit von Luft bei einer Temperatur von 670 bis 860 Grad C mit einem Druck < 2 at in die Schmelze eingeleitet wird.
Patent DD-153125-A5 (DD)
Title: Copolymer aus milchsaeureeinheiten und glykolsaeureeinheiten und verfahren zu seiner herstellung
Inventor: NEVIN ROBERT S
IPC: C08G63/00
Filed: 1980-09-12
Abstract: Ein Ziel der Erfindung ist die Bereitstellung eines Polymerisationsverfahrens, das eine praktisch vollstaendige Entfernung von Polymerisationskatalysatoren aus dem Copolymer ermoeglicht, so dass sich die hergestellten Copolymeren als Systeme zur Freisetzung von Arzneimitteln verwenden lassen, durch deren vollstaendigen biologischen Abbau keine restlichen Substanzen im tierischen Gewebe zurueckbleiben. Das neue Copolymer besteht erfindungsgemaess aus 60 bis 90 Gew.-% Milchsaeure und 40 bis 5 Gew.-% Glykolsaeure, wobei es eine inhaerente Viskositaet in Chloroform von 0,08 bis 0,30 und ein gewichtsmittleres Molekulargewicht von 6.000 bis 35.000 hat und praktisch keinen Polymerisationskatalysator enthaelt. Die genannten Anteile an Milch- und Glykolsaeure werden in Gegenwart von Dowex HCR-W2-H oder Amberlyst 15 ueber 15 bis 96 Stunden umgesetzt, wobei sich das Copolymer bildet.
Patent DD-202374-A5 (DD)
Title: Herbizide mittel
Inventor: AYA MASAHIRO
IPC: A01N43/54
Filed: 1982-02-11
Abstract: Die Erfindung betrifft herbizide Mittel fuer die selektive Unkrautbekaempfung in der Landwirtschaft. Ziel der Erfindung ist die Bereitstellung von neuen Mitteln mit verbesserter herbizider Wirkung. Erfindungsgemaess werden als Wirkstoff in den neuen herbiziden Mitteln substituierte Tetrahydropyrimidinonderivate der allgemeinen Formel I angewandt, worin die Gruppen Ar gleich oder verschieden sein koennen und jeweils aus einer alpha-Naphthylgruppe und einer Gruppe der Formel II ausgewaehlt sind, worin X ein Rest ist, der aus der aus einem Halogenatom, einem niederen Alkylrest, einem niederen Alkoxyrest, einer Nitrogruppe, einer Cyanogruppe, einer niederen Alkylcarbonylgruppe, einer niederen Alkoxycarbonylgruppe, einem Trifluoromethylrest und einem Phenoxyrest bestehenden Gruppe ausgewaehlt ist, wobei in Faellen, in denen mehrere Gruppen X vorhanden sind, diese gleich oder verschieden sein koennen, und n fuer 0, 1, 2 oder 3 steht.
Patent DD-220307-A5 (DD)
Title: Verfahren zur herstellung von polycyclische carbonsaeureverbindungen
Inventor: BLATTNER HANS
IPC: C07D491/044
Filed: 1984-04-10
Abstract: DIE ERFINDUNG BETRIFFT EIN VERFAHREN ZUR HERSTELLUNG VON POLYCYCLISCHEN CARBONSAEUREVERBINDUNGEN FUER DIE ANWENDUNG ALS ARZNEIMITTEL. ZIEL DER ERFINDUNG IST DIE BEREITSTELLUNG VON NEUEN VERBINDUNGEN MIT WERTVOLLEN PHARMAKOLOGISCHEN EIGENSCHAFTEN, INSBESONDERE MIT NEUROLEPTISCHER WIRKUNG FUER DIE BEHANDLUNG VON SCHIZOPHRENIE. ERFINDUNGSGEMAESS WERDEN VERBINDUNGEN DER FORMEL (I) HERGESTELLT, WORIN R EINE GEGEBENENFALLS VERESTERTE ODER AMIDIERTE CARBOXYGRPPE, R TIEF 1 WASSERSTOFF ODER EINEN GEGEBENENFALLS SUBSTITUIERTEN ALIPHATISCHEN ODER CYCLOALIPHATISCH KOHLENWASSERSTOFFREST, X EPOXY ODER EPITHIO, UND N 1 ODER 2 BEDEUTEN, ODER SALZE DAVON, DIE NEUROLEPTISCHE VERBINDUNGEN AUFWEISEN.
Patent DD-231298-A5 (DD)
Inventor: SASAKI YUTAKA
IPC: B01J27/18
Filed: 1984-09-28
Abstract: A process for the production of antimony-containing metal oxide catalysts, comprising preparing a slurry containing as essential components an antimony component, a polyvalent metal compound, and silica sol, heating and drying the slurry to form a solid product, and then calcining the solid product, wherein the antimony component is a mixture of (A) at least one of antimonic acid, polyantimonic acid and the salts thereof and (B) antimony trioxide, and is prepared by mixing (A) and (B) in such a manner that the antimony provided by the (B) constitutes from 0.1 to 70 atomic % of the total amount of antimony and further in an aqueous slurry state. These antimony-containing metal oxide catalysts have superior activity and physical properties, and further reproducibility in the preparation thereof. Thus they are useful for production of aldehydes and acids through oxidation, nitriles through ammoxidation, and dienes, unsaturated aldehydes and unsaturated acids through oxidative dehydrogenation.
Patent DD-246527-A5 (DD)
Title: Ammoniummonophosphate, verfahren zu ihrer herstellung und ihre verwendung
Inventor: KLEEMANN STEPHAN
IPC: C01B25/28
Filed: 1986-03-05
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Ammoniummonofluorophosphaten fuer die Verwendung als Zahnpastenadditive zur Kariesinhibierung. Ziel der Erfindung ist die Bereitstellung von neuen Verbindungen, bei denen die Fluorid-Freisetzung im Mundbereich langsam aber kontinuierlich ablaeuft. Erfindungsgemaess werden Ammoniummonofluorophosphate der allgemeinen Formel I (R1R2R3NH)R4PO3F (I)hergestellt, worin beispielsweise bedeuten: R1, R2 und R3 gleich oder verschieden einen geradkettigen, verzweigten oder cyclischen, ungesaettigten Alkyl-, Aralkyl- oder Arylrest, wobei diese gegebenenfalls noch durch Alkyl, Alkoxy oder Hydroxyl substituiert sein koennen oder zusammen eine Alkylenbruecke bilden, R3 auch ein Wasserstoffatom sein kann und R4 ein Wasserstoffatom oder die Gruppe R5R6R7NH ist, in der R5, R6 und R7 die gleichen Bedeutungen haben wie R1, R2, R3.
Patent DD-290265-A5 (DD)
Title: Verfahren und vorrichtung zur bestimmung der oberflaeche von dispersen systemen
Inventor: LANGER FRANK
IPC: G01N15/08
Filed: 1987-12-09
Abstract: Das Verfahren und die Vorrichtung zur Bestimmung der Oberflaeche von dispersen Systemen finden bei den Technologien und Untersuchungen, die auf genauer Kenntnis der Kornoberflaechen bzw. der Oberflaechen disperser Systeme von z. B. Betonzuschlagstoffen beruhen, Anwendung. Das disperse System wird derart bestrahlt bzw. durchstrahlt, dasz ueber die Intensitaet nach der Be- bzw. Durchstrahlung die exakte Grundriszflaeche des Materials bekannt ist und aus ihr die Gesamtoberflaeche der Probe oder die spezifische Oberflaeche bei gewaehlter Kornform berechnet wird. Fig. 2{spezifische Oberflaeche; Probenoberflaeche; Kornoberflaeche; disperses System; Grundriszflaeche; Betonzuschlagstoff; Kornform; Durchstrahlung; Bestrahlung}
Patent DD-271325-A5 (DD)
Title: Verfahren zur herstellung von methallylchlorid
Inventor: JABRIK JULIUS
IPC: C07C17/10
Filed: 1988-06-28
Abstract: Die Erfindung betrifft ein Verfahren zur Herstellung von Methallylchlorid aus nahezu stoechiometrischen Mengen Isobuten und Chlor in der Gasphase, das dadurch gekennzeichnet ist, dass man die Reaktion in einem Kreuzstromreaktor durchfuehrt, wobei das Isobuten ein mantelgekuehltes Reaktionsrohr durchstroemt und Chlor an zwei oder mehr Stellen dieses Reaktionsrohres zugespeist wird. Die Durchfuehrung der Umsetzung in einem Kreuzstromreaktor ermoeglicht eine stabile Reaktionsfuehrung auch ohne Sauerstoffzugabe, wobei gleichzeitig die Ausbeute an Methallylchlorid erhoeht wird.