baber/WOPTO huggingface dataset:
Patent WO-2004021888-A2 (WO)
Title: Device and method for measuring elasticity of a human or animal organ and for two- or three-dimensional representation thereof
Inventor: SANDRIN LAURENT
IPC: G01N19/00
Filed: 2003-09-02
Abstract: The invention concerns a device for measuring elasticity of a human or animal organ, in particular of the breast, or more generally all viscoelastic media presenting an ultrasonic signal after ultrasonic illumination and subsequently providing two- or three-dimensional representation thereof, comprising at least one ultrasonic array (1) including a plurality of transducers (12), or the like, an excitation means capable of generating and delivering a direct or indirect low frequency stress, means for acquiring ultrasonic signals, means for controlling and processing data, such as a computer. The invention is characterized in that it comprises scanning means capable of scanning of said one-dimensional (1D) or two-dimensional (2D) array (1), to thereby obtain respectively a two-dimensional (2D) or three-dimensional (3D) representation of the elasticity measurement. The invention also concerns a method for using said device.
Patent WO-2004026221-A2 (WO)
Title: Make-up composition fibers, particularly eyelashes
Inventor: GOUAISBAULT ROSEMARY
IPC: A61K8/895
Filed: 2003-09-18
Abstract: The invention relates to a make-up composition. Said composition is characterized in that it comprises a polymer or a polymer mixture selected from amongst the family of hydroxylated or non-hydroxylated polydimethyl siloxanes and the mixtures thereof, and it that it has a viscoelasticity and viscosity that are appropriately determined so as to enable the formation of droplets on the keratin fibers, said polymer or polymer mixture being dispersed in a volatile solvent. The concentration used of the above-mentioned composition does not contain any product which modifies viscoelasticity that may prevent the formation of said droplets. The invention makes it possible to form droplets, preferably transparent droplets, on the ends of keratin fibers, particularly the eyelashes or hair.
Patent FR-2054494-A2 (FR)
Title: Emulsifiers prodn.
IPC: C09K23/00
Filed: 1969-07-16
Abstract: Process uses a tar with at least one basic cpd. e.g. an alkaline earth material to which is added an amine salt, for example a salt of an amine and a fatty acid.
Patent FR-2283726-A2 (FR)
Title: Rotary mill for fragmenting plastics materials - with vane profile modified to minimise friction and erosion losses
Inventor: ROUSSEL JACQUES
IPC: B02C19/18
Filed: 1974-09-06
Abstract: In a mill for fragmentation of solid matls., the feed matl. is dropped coaxially on to a rotor with vanes which redirect the matl. radially outwards to impinge on an annular array of inclined. zig-zag panels acting as the impact surface. The particles travelling horizontally across the rotor are in contact with radially aligned surfaces. Friction losses between the particles and the rotor vanes reduce the ultimate impact speed and require the outer parts of the vanes to be detachable and replaceable to compensate for erosion. In the addn., the vane profile is modified so that the vane face approximates to the natural trajectory of matl. passing across and being accelerated by a spinning plate. Also the installation incorporating such a rotor may be modified so that the prodt. matl. is collected and fractionated in a cyclone, with oversize particles being automatically returned for further pass(es) through the fragmentation unit. The device is esp. suitable for pulverising plastics matls. at sub-ambient temps. Friction and erosion between the particles and the rotor vanes is minimised to what may be negligible levels. Higher impact energies are achieved for a given power input, since the kinetic energy of matl. impinging on the rotor is preserved, as well as being enhanced by spin-out.
Patent FR-2358446-A2 (FR)
Title: Blue disperse dyes for hydrophobic (semi)-synthetic fibres - e.g. polyamide(s), linear aromatic polyester(s) and cellulosics
Inventor: GROEBKE WOLFGANG
IPC: C09B29/06
Filed: 1976-12-07
Abstract: Diazo cpds. of formula (I) are new In the formula Ru and R3 ar3 each H, Cl, Br OH or alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonylamino or alkoxycarbonylamino, Ri is H, benzoyl alkylcarbonyl, alkoxycarbonyl, or alkyl opt. substd. by halogen, OH, benzyloxy, phenoxy or alkoxy, R4 is NO2 or CN; R5 is Cl or Br, all alkyl alkoxy gps are 1-4C). (I) are disperse dyes for dyeing/printing high mol.wt. hydrophobic (semi/synthetic fibres and fabrics, esp. linear aromatic polyesters, polyamides, cellulose hemipenta- acetate and cellulos triacetate. Blue and red-blue shades are obtd. of good fastness to light, thermofixing, sublimation, creasing, and esp. to wet treatments, (water, washing, perspiration) solvents (partic. dry cleaning) overdyeing, rubbing, O3, Cl2, oiling, permanent press treatments, and soil-release treatments. Stability to reduction in dyeing with wool and reserve with wool and cotton are good.
Patent FR-2416113-A2 (FR)
Title: Dust-free fabric based on asbestos - is woven from asbestos yarn sheathed in yarn from glass fibres
IPC: D02G3/16
Filed: 1978-02-03
Abstract: A fabric is woven from warp and weft threads comprising a core formed by an asbestos thread sheathed in glass fibre yarn. The material described in parent patent, does not cause dust either when it is manipulated or afterwards. The glass fibres withstand heat up to 600 degrees C and increase the tensile strength of the sheathed material. The asbestos yarn of 2mm dia. when enclosed in the glass fibres is comprissed so that the sheathed yarn has the same dia. and the woven fabric having 350 warp ends and 250 weft ends per metre, similarly causes no dust.
Patent FR-2432148-A2 (FR)
Title: Section of solar radiation absorption panel - has profiled ends fitting together forming circular way for insertion of tube
Inventor: RONC MICHEL
IPC: F24S10/75
Filed: 1978-07-27
Abstract: The section is formed by extrusion from aluminium or other good conductor of heat. It consists of a plate with shaped ends (3, 4) which slot into corresponding ends on the next section. The female end has a semi-circular part and a curved recess below this. The male end at the opposite end of the section has a similar semi-circular part and a curved lip below it.. The lip on one section slots into the recess on the next bringing the semi-circular parts together to form a circular passage through which a corrosion resisting metal tube is inserted.
Patent FR-2460848-A2 (FR)
Title: Cylindrical metal container with pourer in lid - is closed by stopper and fitted with integral carrying handle
Inventor: SAUTEREAU GERARD
IPC: B65D47/10
Filed: 1979-07-06
Abstract: The container is fitted with a stopper consisting of a sleeve which fits through the lid of the container. The sleeve is flanged on the lower part of the outside to prevent it from being pulled out of the container. The stopper (36) has a skirt that fits inside the sleeve, and an extension lug (42) which enables the stopper to be pulled open. The outer sleeve has a carrying handle (15) consisting of a stem (49) and a cross piece (48). The carrying handle may also be replaced by a loop connected to the sleeve.
Patent FR-2451359-A2 (FR)
Title: Composes polyfluoroallyloxyles, leur preparation et copolymeres de ceux-ci
IPC: C07C43/225
Filed: 1980-03-13
Abstract: L'INVENTION SE RAPPORTE A LA CHIMIE DES COMPOSES FLUORES. ELLE CONCERNE DES COMPOSES DE LA FORMULE: (CF DESSIN DANS BOPI) R EST UN GROUPE PERFLUOROALCOYLE EVENTUELLEMENT SUBSTITUE, ET R EST -CFCN, -CFCOF OU -CFCOH. UTILISATION POUR LA PRODUCTION DE COPOLYMERES, NOTAMMENT AVEC LE TETRAFLUOROETHYLENE.
Patent FR-2508144-A2 (FR)
Title: Hot water supply installation with thermodynamic circuit - has group of compressors linked to hot water source and heat exchanger for heat extraction
IPC: F25B30/06
Filed: 1981-06-19
Abstract: The thermodynamic circuit is traversed by a temp. reducing fluid in the liquid and vapour phases and has successively a group of compressors (10), a heat exchange condenser (13), linked to the hot source of the hot water circuit. The circuit also has regulating valve (14) and evaporator (15b) exchanging heat with the heat carrying fluid and linked to the solar exchanger (25). The circuit also has a heat exchanger (15a) for thermal extraction by latent heat of solidification above the reservoir (24). It is associated with the pump (32) that lifts the water from the reservoir onto the sprinkling ramp (31).
Patent FR-2621684-A2 (FR)
Title: Method and device for producing instant hot water for sanitary use
Inventor: THEVENET JEAN-CLAUDE
IPC: F24D19/10
Filed: 1987-10-08
Abstract: Device for producing instant hot water for sanitary use, including a heat exchanger with plates, the primary circuit of which is supplied with heating fluid provided by a boiler, a heating system or the like, having a low pressure-drop, where the fluid circulates at a low flow-rate while undergoing a large temperature drop and in which the hot water for sanitary use is collected at the outlet of the secondary circuit. Associated with the primary circuit 111 are at least one first, thermostatically-controlled three-way valve 117 and at least one second, two-way valve 130 sensitive to the pressure-drop PE - PS existing between the inlet 120 and the outlet 121 of the secondary circuit 112 of the exchanger 110, that is to say to the flow-rate of the hot water for sanitary use. Application: distribution of hot water for sanitary use.
Patent WO-0170857-A2 (WO)
Inventor: BRIDGES RICHARD FRANK
IPC: C25B9/23
Filed: 2001-03-21
Abstract: An ion-exchange material, for example a polymer electrolyte membrane or gas diffusion electrode comprises a semi-crystalline copolymer comprising: a first unit which includes an ion-exchange site; a second crystalline unit; and a third unit which is amorphous. The third unit is used to disrupt the crystallinity of the copolymer thereby to increase its solubility in solvents. The material described may be used in fuel cells.
Patent WO-02080960-A2 (WO)
Title: Neuropathologies associees a l'expression du tnf-$g(a)
Inventor: SIBSON NICOLA RUTH
IPC: G01N33/566
Filed: 2002-04-05
Abstract: L'invention se rapporte à un traitement des neuropathologies associées avec des niveaux élevés de TNF-α à base de cytokine dans le cerveau. Il est possible d'éliminer la réduction obtenue de la perfusion cérébrale par l'administration d'un antagoniste récepteur d'endothéline, d'un antagoniste du récepteur de TNF-α p75, d'un inhibiteur d'enzyme de conversion d'endothéline ou d'un agent de neutralisation d'endothéline. L'évaluation de composés de traitement adéquats qui se lient au récepteur de TNF-α p75 ou aux récepteurs d'endothéline (ETA et ETB), et qui agissent en tant qu'antagoniste de ces récepteurs, peut se faire au moyen de techniques IRM in vivo afin de détecter une augmentation de la perfusion cérébrale.
Patent WO-03093536-A2 (WO)
Title: Production d'hydrogene
Inventor: KENDALL KEVIN
IPC: C25B9/19
Filed: 2003-05-02
Abstract: Cette invention a trait à un appareil (2) destiné à produire de l'hydrogène, comportant une zone (6) et une cloison (10) ayant une certaine épaisseur entre ses deux côtés, ainsi qu'un matériau électrolytique conducteur d'ions oxygène. Ce matériau électrolytique comporte une voie conductrice d'électron non métallique, l'électron pouvant, de ce fait, traverser la cloison (10). Une partie au moins de la cloison (10) se trouve dans la zone susmentionnée (6). L'appareil, qui est également pourvu de moyens de production de vapeur (14), destinés à fournir de la vapeur au premier côté de la cloison, cette vapeur étant dissociée et contenant de l'hydrogène ainsi que de l'oxygène, comporte également des moyens permettant d'ioniser l'oxygène dissocié en ions oxygène. Il comprend également des moyens permettant le passage des ions oxygène à travers la cloison vers le second côté, laissant sur le premier côté l'hydrogène dissocié comme hydrogène résiduel, et des moyens servant à recueillir celui-ci. Cet appareil (2) est conçu pour fonctionner là où la température de la zone (6) atteint au moins les 700 C.
Patent WO-8704428-A2 (WO)
Inventor: JONES ROBERT LESLIE
IPC: C07D493/08
Filed: 1987-01-15
Abstract: Nouveaux composés ayant la formule (I) dans laquelle (chi) représente un des groupes cycliques divalents, (alpha), (beta), (psi), (delta), (epsilon), (phi), (gamma), (eta), (iota), (xi), et (kappa), les lettres a et b indiquant dans chaque cas les points d'attache des substituants R1 et CV(R2)-NV'R, respectivement; R1 est un groupe -(CH2)(b)-(A)a-(CH2)c-B-CH2-CO2R' dans lequel A et B sont chacun séparément de l'oxygène ou du soufre, a est 0, b est 0 et c est un nombre entier compris entre 3 et 10, ou bien a est égal à 1, b est 0 ou un entier compris entre 1 et 7 et c est un entier compris entre 2 et 9, la somme de b et c étant comprise entre 2 et 9, et CO2R' est un groupe carboxy ou un amide, ester ou dérivé de sel de celui-ci; V et V' sont chacun séparément de l'hydrogène ou sont ensemble la seconde liaison d'une double liaison carbone-azote; R2 est hydrogène, un groupe hydrocarbure aliphatique ou un groupe hydrocarbure aliphatique substitué par un groupe aromatique directement ou par l'intermédiaire d'un atome d'oxygène ou de soufre; et R est un groupe -OR3, -OR4, -D-R3, -N=R5 ou -NW.G.W', dans lequel D est -NH-, -NH.CS-, -NH.CO-, -NH.CO.CH2N(R6)-, -NH.SO2-, -NH.CO.NH-, -NH.CS.NH-, -NH.CO.O- ou bien -NH.CS.O-, G est -CO- ou -CS- et W et W' ensemble sont un groupe -(CH2)d- dans lequel d vaut 3, 4 ou 5, R3 est un groupe hydrocarbure aliphatique, un groupe aromatique ou un groupe hydrocarbure aliphatique substitué par un ou plusieurs groupes aromatiques directement ou par l'intermédiaire d'un atome d'oxygène ou de soufre, R4 est un groupe hydrocarbure aliphatique qui est substitué par l'intermédiaire d'un atome d'oxygène par un groupe hydrocarbure aliphatique lequel est lui-même substitué directement par un ou plusieurs groupes aromatiques, R5 est un groupe hydrocarbure aliphatique, un groupe aromatique dans lequel le système de pi-électrons n'est pas complètement délocalisé sur la totalité du système cyclique, ou bien un groupe hydrocarbure aliphatique substitué par un ou plusieurs groupes aromatiques
Patent WO-9736616-A2 (WO)
Inventor: SEYMOUR LEONARD WILLIAM
IPC: A61K47/48
Filed: 1997-04-01
Abstract: An anti-tumour agent comprises a macromolecular carrier moiety, an active alkylating moiety which is a nitrogen mustard and a stabilising moiety which links the active alkylating moiety with the carrier moiety. The stabilising moiety is an oligopeptide which is capable of being cleaved by a tumour-associated protease and which stabilises the active alkylating moiety by electron withdrawal and/or by inducing formation of aggregates.
Patent WO-9916880-A2 (WO)
Title: Proteine impliquee dans la transmission des signaux de l'acide abscissique
Inventor: BLATT MICHAEL
IPC: C07K14/47
Filed: 1998-09-30
Abstract: L'invention concerne une protéine isolée, capable d'affecter une réponse à l'acide abscissique (ABA), et comprenant une ou plusieurs des caractéristiques suivantes: (i) une extrémité C-terminale hydrophobe, (ii) un motif d'épimorphine, (iii) une extrémité N-terminale hydrophile et iv) un site de fixation nucléotidique. Elle concerne également un variant de cette protéine.
Patent HU-0001517-A2 (HU)
Title: Methods and compositions for synthesis of long chain polyunsaturated fatty acids in plants
Inventor: CHAUDHARY SUNITA
IPC: A23L33/00
Filed: 1998-04-10
Abstract: Nucleic acid construct contains: (a) at least one of 1617 (S1), 1488 (S2) and 1488 (S3) bp sequences (I), or (b) any sequence encoding the same proteins as (I), coupled to a heterologous sequence, particularly an expression control sequence functional in plants. Also new are: (A) recombinant plant cells containing at least one DNA encoding a Mortierella alpina fatty acid desaturase (FAD), so that it can produce a polyunsaturated fatty acid (PUFA); (B) oils produced by these cells (or plants containing them), and (C) 7 sequences encoding human FAD and two sequences encoding Schizochytrium FAD, when expressed in plant cells.
Patent HU-0002106-A2 (HU)
Inventor: HEERES GERARDUS JOHANNES
IPC: A61K31/407
Filed: 1998-05-19
Abstract: A találmány a CNS-antidepresszáns transz-5-klór-2,3,3a,12b-tet-rahidro-2-metil-1H-dibenz[2,3:6,7]oxepino[4,5-c]pirrol és egy sóképzőszer sójára vonatkozik, amelyben a sóképző szer egy aromás szulfonsav.A találmány szerinti só előnyösen vízben oldhatatlan és kristályos,ezért injekciós depókészítmények előállítására alkalmazható. Ó
Patent HU-0002202-A2 (HU)
Inventor: BREED ANTHONIUS JOHANNES MARIA
IPC: B01J31/10
Filed: 1998-02-24
Abstract: A találmány szerinti eljárással elágazó láncú karbonsavakat állítanakelő oly módon, hogy egy elágazó láncú olefint vagy annak prekurzorátegy folyamatos visszakeveredésű reaktorban reagáltatják - amelyreaktorban a betáplálási komponensek és termékek megfelelő keveredésetörténik hatékony visszakeveredés eléréséhez a folyamatosanbiztosított szén-monoxiddal és vízzel, miközben folyamatosan egykilépőáram van elvezetve, amely elágazó láncú karbonsavat, át nemalakult olefint, szén-monoxidot és vizet tartalmaz - egy savasioncserélő jelenlétében, amely megfelelő savas csoportokat tartalmaz akívánt protonok biztosítására az említett olefin vagy prekurzorának ésa szén-monoxidnak elágazó láncú karbonsavakká történő átalakításához,mely reagáltatást 25 °C-tól 200 °C-ig terjedő hőmérséklet-tartománybaeső hőmérsékleten és 10-200 bar-ig terjedő tartományba eső nyomásonvégzik. Ó
Patent HU-0202536-A2 (HU)
Inventor: PFLAUM
IPC: A61K31/22
Filed: 2000-08-04
Abstract: A találmány kristályos pravasztatin-nátrium- sóra vonatkozik. Atalálmány tárgya továbbá ennek a kristályos sónak az előállítása olymódon, hogy (a) rövid szénláncú alifás alkohollal pravasztatint ésnátrium-kationokat tartalmazó oldatot készítenek; (b) az alkoholosoldathoz etil-acetátot adnak; (c) az alkoholos/etil-acetátos elegyetlehűtik; és (d) kristályosítást végeznek. Ó
Patent HU-0202878-A2 (HU)
Inventor: MASSMANN BRENT D
IPC: A01N57/20
Filed: 2000-07-27
Abstract: A találmány tárgya eljárás folyamatirányban feldolgozható ammónium-glifozát paszta előállítására. Az eljárás során egy alkalmas edénybenelkeverünk körülbelül 1:(0,8-1,25) mólarányban szemcsés glifozátsavatés ammóniát, valamint az edényben az összes előkevert anyag körülbelül10-25 tömeg%-át kitevő mennyiségű vizet, miáltal a glifozátsav és azammónia között reakció megy végbe, amelynek hatására hő keletkezik,ami előidézi a víz részleges elpárolgását, és körülbelül 5-20 tömeg%nedvességtartalmú ammónium-glifozát paszta keletkezik. A találmánytárgya továbbá eljárás száraz, granulált gyomirtó keverékelőállítására. Az eljárás során (a) ammónium-glifozát pasztátkészítenek, ahogy fentebb ismertettük, majd ha a pasztanedvességtartalma 15 tömeg%-nál nagyobb, hőt és/vagy vákuumotalkalmaznak, hogy a paszta nedvességtartalmát körülbelül 5-15 tömeg%-ra csökkentsék, (b) azután keveréssel hozzáadnak a pasztához egy vagytöbb felületaktív anyagot, ahol az összes felületaktív anyagnak azammónium-glifozáthoz viszonyított tömegaránya körülbelül (1:9) - (1:3)extrudálható nedves elegy készítése céljából, (c) extrudálják a nedveselegyet, hogy extrudált szálakat kapjanak, amelyek nedves, koherensgranulátummá töredeznek, és (d) a granulátumot száraz, granuláltkeverék előállítása céljából szárítják. Ó
Patent HU-0203108-A2 (HU)
Title: Antipicornaviral compounds and compositions, their pharmaceutical uses, and materials for their synthesis
Inventor: DRAGOVICH
IPC: C07K5/097
Filed: 2000-08-03
Abstract: Compounds of the formula:where the formula variables are as defined in the disclosure, advantageously inhibit or block the biological activity of the picornaviral 3C protease. These compounds, as well as pharmaceutical compositions containing these compounds, are useful for treating patients or hosts infected with one or more picornaviruses, such as RVP. Intermediates and synthetic methods for preparing such compounds are also described.
Patent HU-0203163-A2 (HU)
Inventor: MARENCSAK GABOR
Filed: 2002-09-24
Abstract: A berendezésnek a közút mentén elhelyezett, reklámelemeket,
különösen szövegeket vagy/és képeket tartalmazó reklámgönbje
van.
A találmány lényege, hogy a közúton a reklámgömb/1/ felé
közeledő jármű irányából tekintve a reklámgömb/1/ előtt mindkét
irányból tekintve a járműben tartózkodó személyek számára
a mozgás benyomását keltő távköazel rsklámelemek/et/ legalább
részben szabaddá tevő vagy/és eltakaró modifikáló elemek /2b 2c/
és, kiegészítő elemek/2 2a 2d/ vannak elhelyezve.
Patent HU-0301325-A2 (HU)
Title: Stabilized pharmaceutically effective composition and pharmaceutical composition comprising the same and process for preparation the composition
Inventor: KERE JANEZ
IPC: A61P3/06
Filed: 2000-06-09
Abstract: Lovastatin, pravastatin, simvastatin, mevastatin, atorvastatin, and derivatives and analogs thereof are known as HMG-CoA reductase inhibitors and are used as antihypercholesterolemic agents. The majority of them are produced by fermentation using microorganisms of different species identified as species belonging to Aspergillus, Monascus, Nocardia, Amycolatopsis, Mucor or Penicillium genus, and some are obtained by treating the fermentation products using the methods of chemical synthesis or they are the products of total chemical synthesis.The aforementioned active substances may be destabilized by the environmental factors, their degradation may also be accelerated by interactions with other pharmaceutical ingredients, such as fillers, binders, lubricants, glidants and disintegrating agents, therefore the pharmaceutical ingredients and the process for preparation of the pharmaceutical formulation should be meticulously chosen to avoid the aforementioned undesired interactions and reactions.The present invention relates to a HMG-CoA reductase inhibitor which is stabilized by forming a homogeneous composition with a buffering substance or a basifying substance. This homogeneous composition is suitably used as the active substance in a pharmaceutical formulation for the treatment of hypercholesterolemia and hyperlipidemia.
Patent HU-0302193-A2 (HU)
Inventor: GALLI FREDERIC
IPC: A61K31/551
Filed: 2001-05-29
Abstract: A találmány tárgya az (I) általános képletű vegyület, amelyben Xjelentése oxigénatom, vagy kénatom, vagy NH csoport; R1, R2, R3 és R4egymástól függetlenül lehet hidrogénatom, vagy halogénatom, nitro,amino, trifluor-metil, trifluor-alkoxi, ciano, hidroxil, (C1-C6)alkil,(C1-C6)alkoxi, vagy fenilcsoport; bázis, vagy savaddíciós sójaformájában. A találmány kiterjed a vegyületek előállítására és ezekettartalmazó gyógyszerkészítményekre is. Ó
Patent HU-0302967-A2 (HU)
Title: Retaining spring for detachably connecting two components
Inventor: DE JONG MICHAEL
IPC: F16B2/24
Filed: 2001-10-18
Abstract: The retaining spring is used for detachably connecting two components. The retaining spring includes a retaining plate attached to one component and an engagement spring which is moveably guided on the retaining plate between an engagement position and a released position in the direction of attachment. The engagement spring is provided with a catch edge for securing over an engagement projection which is provided on the other component. A slanted insert limb used to raise the engagement spring when the slidable component is moved in the direction of attachment. In order to connect and detach the two components with greater ease, even when space is lacking in the area immediately surrounding the connection points, the engagement spring is maintained in a position of engagement on the retaining plate by an engagement means acting against the resistance of the spring in the direction of attachment.
Patent HU-0303274-A2 (HU)
Title: Method for producing high-purity diisobutene
Inventor: BECKMANN ANDREAS
IPC: C07C11/02
Filed: 2001-12-28
Abstract: The invention relates to a process for preparing high-purity diisobutene by reaction of isobutene or isobutene-containing hydrocarbon mixtures over a solid acidic ion-exchange resin containing sulfonic acid groups whose protons have been partly replaced by metal ions and to the use of the diisobutene.