baber/WOPTO huggingface dataset:
Patent WO-9924675-A1 (WO)
Title: Schutzelement, solche elemente umfassende vorrichtungen sowie verfahren zum schützen eines gebietes vor hochwasser oder lawinen
Inventor: SCHEIBE KLAUS WOLFGANG
IPC: E02B7/44
Filed: 1998-11-04
Abstract: Die Erfindung betrifft ein Schutzelement (1) mit einer Platte (2), welche eine erste Längskante (3) und eine zweite Längskante (4) aufweist, die um eine Distanz (D) voneinander beabstandet sind und welches ein im Wesentlichen parallel zur ersten Längskante und/oder zweiten Längskante angeordnetes und zur Übertragung von Kräften ausgebildetes Drehlager (5, 5') umfasst, mittels welchem die Platte (2) an einer Unterkonstruktion (6) zur Aufnahme von auf das Schutzelement wirkenden Kräften, insbesondere an einer Vorrichtung für Hochwasser- oder Lawinenschutz, und gegenüber dieser Unterkonstruktion (6) in einem Schwenkbereich (S) beweglich anordenbar ist, welches dadurch gekennzeichnet ist, dass das Drehlager (5, 5') dichtend ausgebildet und zum Ausgleichen von auf die Platte (2) bzw. das Lager (5, 5') wirkenden Kräften - maximal um ein Viertel der Distanz (D) von einer zwischen der ersten und zweiten Längskante, im Wesentlichen parallel zu den Längskanten (3, 4) verlaufenden geometrischen Achse bzw. Schwerachse (7) der Platte (2) beabstandet angeordnet ist. Das Schutzelement (1) kann - entsprechend der Ausgestaltung seiner Oberflächen - als Geh- oder Fahrweg, Träger von Sonnenkollektoren oder zum Übertragen von Belastungskräften ausgebildet und in eine Vorrichtung zum Schutz vor Hochwasser oder Lawinen eingebaut sein.
Patent WO-0166226-A1 (WO)
Title: Procede et dispositif de purification et de collecte des microparticules de gaz de combustion s'echappant des conduits d'evacuation
Inventor: LEUNG KWONGKEUNG
IPC: B01D46/22
Filed: 2001-02-28
Abstract: L'invention concerne un dispositif de purification et de collecte des microparticules de gaz de combustion s'échappant des conduits d'évacuation, comprenant : 1) une quantité d'eau adaptée dans le réservoir d'eau ou dans la cuve d'eau ; 2) un réseau adéquat de collecte et de purification des microparticules de gaz de combustion disposé dans le réservoir d'eau ou la cuve d'eau ; 3) un réseau de collecte et de purification des microparticules de gaz de combustion adapté et un instrument de mise en route du déplacement mutuel hydraulique ou rotatif. Deux opérations sont utilisées pour purifier et collecter les microparticules de gaz de combustion porteuses d'eau, à savoir la projection automatique des microparticules assurée par les conduits d'évacuation dans le réseau lors du déplacement mutuel ou l'aspiration dans les conduits d'évacuation des microparticules soumises au réseau empêchant l'arrêt lors du déplacement mutuel. Grâce à la conception adéquate de l'invention, on peut atteindre des résultats probants respectueux de l'environnement.
Patent WO-9700677-A1 (WO)
Inventor: ZHOU SHANXUE
IPC: A61K31/195
Filed: 1996-06-21
Abstract: The present invention relates to the use of ubenimex or salts thereof and the pharmaceutical composition containing them for treating virus hepatitis, especially chronic hepatitis B.
Patent WO-0052325-A1 (WO)
Title: Steuerventil für die einspritzanlage eines dieselmotors
Inventor: RIZK REDA
IPC: F02M59/46
Filed: 2000-02-24
Abstract: Das Steuerventil (10) für die Einspritzanlage eines Dieselmotors mit einem Kraftstoffinjektor mit einem Druckverstärker umfaßt ein Gehäuse (12) mit einem Eingangsanschluß (16) und einem Ausgangsanschluß (18) sowie einen Ventilkörper (20) mit einer ersten Ventilfläche (22), die in einem ersten Zustand an einem ersten Ventilsitz (24) anliegt und in einem zweiten Zustand davon abgehoben ist. Ein Ventilelement (36) am Ventilkörper (20) weist eine zweite Ventilfläche (38) auf, die im ersten Zustand von einem zweiten Ventilsitz (40) abgehoben ist und im zweiten Zustand daran anliegt.
Patent WO-0138011-A1 (WO)
Inventor: THURN RUDOLF
IPC: G10K11/00
Filed: 2000-11-14
Abstract: L'invention concerne un transducteur d'ultrasons (1) comprenant un boîtier (2) dans lequel sont fixés par liaison de force et de forme un générateur d'ultrasons composé de piézocéramique (3) et d'une couche d'adaptation (4). La liaison de force et de forme est réalisée par au moins quatre couches (8, 9, 10, 11, 12, 2) aux impédances caractéristiques acoustiques alternantes et très différentes.
Patent WO-0188281-A1 (WO)
Title: Wasserrückgewinnung aus der atmosphäre
Inventor: STEINER WALTER GEORG
IPC: E03B3/28
Filed: 2001-05-18
Abstract: Die Erfindung betrifft ein Verfahren zur Wasserrückgewinnung aus der Atmosphäre mit einer Wasserrückgewinnungskammer (1) mit Wasserrückgewinnungszellen (2) und einem regelbaren Hochleistungsgebläse (3). Hierbei erfolgt im Nachtbetrieb eine Kühlung eines in einem Kältespeicher (7) gespeicherten Kühlmittels mittels Kältekollektoren (6) und im Tagbetrieb erfolgt eine Erwärmung einer weiteren, in einem Wärmespeicher gespeicherten Flüssigkeit mittels Solarkollektoren (8), wobei das bei Nacht abgekühlte Kühlmittel zur Wassergewinnung bei Tag und/oder bei Nacht von Luft durchströmte Kühlregister kühlt, an denen diese Luft entfeuchtet wird, und wobei die wärmespeichernde Flüssigkeit bei Tag und/oder bei Nacht zur Energiegewinnung für den Betrieb der Anlage und/oder zur Wassergewinnung eingesetzt wird.
Patent WO-03038921-A1 (WO)
Title: Isolator für ein organisches elektronikbauteil
Inventor: GUILLET ERWANN
IPC: H01L51/05
Filed: 2002-09-05
Abstract: Die Erfindung betrifft einen Isolator für ein organisches Elektronikbauteil, insbesondere für einen organischen Feld-Effekt-Transistor (OFET) und/oder einen organischen Kondensator. Das Isolatormaterial zeichnet sich dadurch aus, dass es eine nahezu konstante relative Dielektrizitätskonstante auch bei Änderung der Frequenz in weiten Bereichen, wie z.B. zwischen 1 Hz und 100 kHz, hat.
Patent DE-1803432-A1 (DE)
Title: Manufacture of high strength polyamide or polyester
Inventor: BERTINI RICCARDO
IPC: B29C48/03
Filed: 1968-10-16
Abstract: Manufacture of high strength polyamide (nylon 66) or polyester yarns by the after-polymerisation of chips of polymer of normal relative viscosity (40-50) to give a polymer of relative viscosity of 80 or more, in which the polymer chips are allowed to fall through an ascending current of hot dry nitrogen directly into a screw extruder, in which they are melted and from which the melt passes via a metering pump to a spinneret to be melt spun in the normal way. Very high tenacity yarns can be produced with constant mechanical properties suitable for use as tyre cord or as reinforcement for high pressure tubing or the like.
Patent DE-1811832-A1 (DE)
Title: Pyrrolidine derivs hypotensive
Inventor: MILLER DAVID
IPC: C07D207/32
Filed: 1968-11-29
Abstract: (A) Method for cmpds. (I):- and salts of (I), including all optical and geometrical stereoisomers. (B) The cpds. (II) and some (III) where R, R1 and R3 = H or (1-6C) alkyl R2 = (1-6C) alkyl or cycloalkyl R4 and R5 = H or (1-6C) alkyl, one of them may be NH2 or NO2 or R4 + R5 together may be -CH2CH2- n = 2-8 Hypotensives with low side effects. (a) 3-Chloromethylbut-1-yne-3-ol (11.85 g.), ethylenediamine hydrate (63.4 ml.), and EtOH (40 ml.), were refluxed 17 hrs., evapd. in vac., 40% NaOH (10 ml.) added, H2O removed by azeotropic distn. with PhH, evapd., and distilled, giving the pyrrol (III) (5.82 g.), b.p. 65.5-66 deg./2 mm. (b) This (12.4 g.) was hydrog. at 25 deg. and 35 kg/cm2 in EtOH (250 ml.) and 5N-HCl (40 ml.), over a 5% Rh.-Al2O3 catalyst (5.0 g.), for 60 hrs. The mixture was filtered, evapd., basified (d.NaOH), extd. with Et2O, and distilled, giving the pyrrolidine (II) (8.72 g.), b.p. 66 deg./14 mm. (c) This (3.84 g.), S-methylisothiouronium sulphate (4.17 g.), EtOH (40 ml.), and H2O (20 ml.), were refluxed 3.5 hrs., cooled, filtered, neutralised with 5N H2SO4 (6.0 ml.), evapd. in vac., and the residue refluxed with EtOH, giving (I) (7.31 g., 91%), m.p. 233-7 deg. (dec.).
Patent DE-1932041-A1 (DE)
Title: Cap closure for thread neck bottles allowing material - to deform during placement for subsequent sealing
Inventor: J DORN HENRY
IPC: B65D41/34
Filed: 1969-06-24
Abstract: Cap closure has a deformable shoulder reaching almost to the container base so as to form a releasable crown cap and is rim coated with paint inside and sealed with resilient material. In the outer annular sealing area with the coating, this paint is itself coated so as to hold the sealing material in this area. In the radially inner area the sealing material is held in position but does not provide a seal. Furthest from the face the cap rim carries a security ring closure whose lower edges grasps the container shoulder and is integrated with the cap at its top edge by a break-off stay piece. The coating adheres strongly the paint in the outer peripheral area, though it does not stick to the sealing material used in the cap. A plastisol compound may be used as sealing material. In this way free movement is ensured for both the sealing and the coating material, as is required during the closure or packing movements of the cap. The cap sits squarely on the neck of the container.
Patent DE-1932186-A1 (DE)
Title: Gauging thermoplastic tubes internally with - simultaneous cooling
Inventor: GUETLHUBER JOHANN
IPC: B29C48/90
Filed: 1969-06-25
Abstract: The thermoplastic tubes are gauged internally, and simultaneously cooled by a unit connected behind the extruder nozzle. The unit itself is located inside the extruded hollow strand material. The gauging boss is designed as an evaporation cooler and is filled with a coolant.
Patent DE-1932582-A1 (DE)
Title: Composite thermal lagging panel in foam - layers
Inventor: WILLY EYBERG DR
IPC: E04C2/20
Filed: 1969-06-27
Abstract: Composite thermal insulating panel composed of temperature responsive polystyrene foam layer and temperature resistant outer polyurethane foam layer. This outer layer is coverd on both sides, and the inner foam layer is glued to the outer using a hot-melt adhesive to soften the inne sensitive layer. This can be done by a burner or heated wire.
Patent DE-1940565-A1 (DE)
Title: 6-(2-tetrahydropyranyl or tetrahydrofuryl) alkylcarbox- - amido) penicillanic acid derivs
Inventor: ANA UGLESIC DIPL-CHEM
IPC: C07D499/46
Filed: 1969-08-08
Abstract: 6-(2-tetrahydropyranyl or tetrahydrofuryl) alkylcarboxamido) penicillanic acid derivs. N3A. Are new compounds of formula (I):- (wherein n is 1 to 5 and Z is a tetrahydropyranyl or tetrahydrofuryl). Prepared by treating 6-aminopencillanic acid (III) with a mixed anhydride of an acid of formula (II):- Z - (CH2)nCOOH (II) with isobutylchlorocarbonate.
Patent DE-1956057-A1 (DE)
Title: Chocolate heat treatment unit heats, cools, - mixes simultaneously
Inventor: KRULL OTTO
IPC: A23G1/10
Filed: 1969-11-07
Abstract: Rotating displacer tube handles differing consistencies and comprises a rotary stage screw fitted with outer and inner cooling zones and outer and inner heating zones for the heat treatment of the chocolate. The individual stages are made up from flat turns of the screw and have passages, also fitted with scrapers. The zones are arranged so that an inner and outer cooling zone faces an inner and outer heating zone, each pair in tandem in the flow sense.
Patent DE-1958423-A1 (DE)
Title: Bipolar electrode for electrolysis cells
Inventor: SCHOEBERLE ROBERT
IPC: C25B11/02
Filed: 1969-11-21
Abstract: Bipolar electrodes arrangement for multi-cell electrolysis apparatus has a central device, formed by two elements resistant to the electrolyte and the electrolysis products, which are mutually connected parallel to each other and immovably attached to two adjacent basins in such a way that each element forms a sidewall of one of the two basins, the one element being rigid and electrically conductive and carrying anode and cathode pairs forming their electrical connection, whereas the other element by its flexibility ensures the absorption of the thermal expansion of the basin on which it is fitted.
Patent DE-1965551-A1 (DE)
Title: Aliphatic amino thiols
Inventor: HERBRAND WILLY DR
IPC: A61K31/13
Filed: 1969-12-30
Abstract: Aliphatic amino thiols. Cpds. of formula: CH3CR(SH)-(CH2)n-CH(CH3)NHR1 (where R and R1 are H and/or lower alkyl, n = 1-4) have activity on the vascular system and may be prepd. by reacting CH3CR(X)-(CH2)n-CH(CH3)NHR1 (where X = halogen) with thiourea followed by alkaline hydrolysis.
Patent DE-2002401-A1 (DE)
Title: Arc welding process and electrode
Inventor: ANTHONY LUCEY JOHN
IPC: B23K35/02
Filed: 1970-01-20
Abstract: At least two electrodes are connected in parallel with one another to common current source. One of the electrodes is a cored electrode containing alloy components, flux and/or other components, and another is a solid electrode. The ends of the electrodes facing the weld are close, or in contact with one another, so that each forms part of the weld metal.
Patent DE-2006854-A1 (DE)
Title: Multi-layered thermoplastic packaging filmfo
IPC: B65D65/40
Filed: 1970-02-14
Abstract: The outer layer is made of a film having a high teartensile- and buckling-strength. The inner layer is a fleece (e.g. made from plastic fibres). An intermediary plastic film layer highly impermeable to moisture has a vapour lock between it and the outer layer and a hygroscopic material (e.g. silica gel) separating it from the inner layer.
Patent DE-2020587-A1 (DE)
Title: Laminated plastics for printed circuit boards
Inventor: FASBENDER HELMUT DR
IPC: H01B3/08
Filed: 1970-04-28
Abstract: Metal-covered laminated plastics sheet for making printed circuit boards has a pure glass fibre fleece base made of glass fibre bundles impregnated with a hardenable resin, pref. an epoxy or phenolic, silicone, bisdiene or unsaturated polyester-resin.
Patent DE-2027344-A1 (DE)
Title: Cyclisation catalyst for ionones - enabling isomers to be easily prod
IPC: C07C403/00
Filed: 1970-06-04
Abstract: Ionones, useful as odourants or as intermediates for further syntheses, of formulae: and corresp. alpha- form (Ib) (where R1-5 are H or 1-4 C alkyl) are prepd. by cyclisation of cpds. of formula: with 0.7 - 3.5 kg. HClO4 (calc. as 100% acid) per kg. (Ia)/(Ib) in the form of a 50-70% aqs. soln. wherein, to produce (Ia) as the major product 0.7 - 1.2 kg. 100% HClO4 per kg. (IIb) is used, while 2.8 - 3.5 kg. 100% of (Ib).
Patent DE-2028664-A1 (DE)
Title: Filter assembly - for land drainage pipes
IPC: E02B11/00
Filed: 1970-06-11
Abstract: Filter, partic. as a wrapping for land drainage pipes, has at least one layer of coconut fibre pref. also with a layer of 'hygromull', 'styromull' or peat.
Patent DE-2039712-A1 (DE)
Title: Controlling arc-welding voltage
Inventor: KOBAYASHI MAKOTO
IPC: B23K9/073
Filed: 1970-08-10
Abstract: The feed rate of the fusible electrode wire is varied to control the welding voltage. A series of static control characteristics relating the welding voltage to the wire feed rate are established for a given operating point. Specifically the welding current and voltage, and the wire feed rate are interdependent as a function of the length of wire feed.
Patent DE-2044283-A1 (DE)
Title: Expansion joint seal
IPC: E04B1/68
Filed: 1970-09-07
Abstract: At least one of the bodies is cast and includes a horizontal upper surface which has at least one channel member adapted for embedding in the upper gap corner of the body. This channel has a horizontal portion, a vertical portion and an upwardly facing concave portion which has a longitudinal retaining lip partially extending over it. A vertical portion terminates at its upper edge in the plane of the horizontal surface of the body. A cured resilient seal member fills the concavity of the concave portion and extends from below the lip into engagement with the second body. The seal has a horizontal upper surface, coplanar with the horizontal surface of the first body. Used for sealing the gap between a pair of structural bodies, e.g. cast floor sections.
Patent DE-2054433-A1 (DE)
Title: De-lustering of polyester surfaces - by treatment with an aromatic halohydrocarbon
IPC: C08J7/02
Filed: 1970-11-05
Abstract: The surface of a polyester article e.g. a polyethylene terephthalate film, is de-lustered by treatment with an aromatic hydrocarbon (I) contg. at least one OH gp. and at least one halogen-atom bonded to an aromatic nucleus. In manuf. e.g. of tracing or drawing film. In contrast to de-lustering by applying a matting coating there is no problem of ensuring good adhesion. This process ensures even de-lustering which is not always achieved by mechanical (abrasion) processes. Prior chemical methods were less efficient and gave less even results. (I) is pref. p-chlorophenol, m-chlorophenol or 2,5-dichlorophenol. Treatment is pref. effected with a 10-30% soln. of (I) in e.g. tetrachloroethane or chloroform. Treatment time is 1/2 30 mins., pref. 4-8 mins., at room temp., followed by washing with a solvent which is a non-solvent for the film.
Patent DE-2064199-A1 (DE)
Title: Acid zinc electroplating baths - contg polyoxyalkylated imidazoline and/or benzothiazole brighteners
IPC: C25D3/22
Filed: 1970-12-29
Abstract: Aq. acid baths for Zn electrodeposition contain dissolved (esp. 1-20 g/l) polyoxyalkylated oleophilic substd. imidazolines and/or (esp. 0.1-10 g/l) polyoxyalkylated benzothiazoles, as brighteners, in addn. to soluble Zn salts, conducting salts and opt, buffers. Ductile, bright to highly bright coatings are formed, suitable for ornamental goods or mass-produced articles, e.g. metal drums. Pref. heterocycles are substd. with polyethoxy gps. and contain 20 C2H4O units, and are used in 0.1 - 30 g/l concn., pref. with aromatic aldehydes and/or ketones, and aromatic and/or aliphatic carboxylic acids, their alkali- and/or NH4 salts. Examples use oleylimidazoline polyglycol ether-(3) and 2-mercaptobenzothiazole-polyglycol ether-(3) as brighteners.
Patent DE-2065870-A1 (DE)
Title: Ski safety binding with pivoted sole plate - has heel and toe clamps on the sole plate and rear and front sole plate holders
Inventor: SITTMANN GEB VOESTER BRIGITTE
IPC: A63C9/084
Filed: 1970-10-22
Abstract: The design combines the facility of easy diliberate boot release with reliable retention, and release during a fall in response to excess stresses in any direction. The sole plate (11) pivots about an approximately central axis provided by a ski fixed vertical bearing (12). The plate is fitted with a fixed toe holder and a spring loaded heel clamp with release trigger. The ski is fitted with a spring lock for the forward projecting front edge of the sole plate, opening in an upward direction, and a rear assembly which holds the back of the sole plate. The heel and rear plate holders are coupled and provide matched tensions.
Patent DE-2122506-A1 (DE)
Title: Pendulum rolling mill - setting mechanism
IPC: B21B13/18
Filed: 1971-05-06
Abstract: Rolling mill has a single load carrying setting device for each vertical support pair facing each other, one on either workpiece path side. Each setting device has a load support device extending transversely across the workpiece path and has a connection, which connects it with each support to absorb one rolling load component from that part of each support, which is away from the swivel axis, so that on application of a rolling load the setting device is exposed to roll force components derived from a screw thread device for setting the distances of the connection of the load carrying device relative to the arms to alter the swivel positions of the supports and of the working roll gap symmetrically w.r.t. the workpiece line of travel and through a support, which supports the weight of each setting device. The device simplifies the setting up of a pendulum rolling mill by reducing the number of adjustments that have to be made prior to starting.
Patent DE-2164658-A1 (DE)
Title: Double fraction foundry moulding sand - with binder addition to one fraction only
Inventor: HEIDE OTTO DR ING
IPC: B22C9/08
Filed: 1971-12-24
Abstract: Instead of infiltrating a set coarse structure refractory material with fine refractory binder sludge as described in the parent patent, the large particle material is mixed with a binder which coats the coarse particles. Following this is intermixed with it a binder free fine particle size fraction, which resultant mixt. is after thorough mixing applied to the casting pattern. The second fine grain fraction is pref. preheated so as to promote quick setting of the combined mixt. The process is used for the making of sand foundry moulds, cores etc. yielding dense structure material.
Patent DE-2211394-A1 (DE)
Title: Two component moulding substances - with the components fed as individual layers to the extrusion nozzle
Inventor: JAEGER FRIEDRICH DR
IPC: B29C48/07
Filed: 1972-03-09
Abstract: Adjacent but spatially separate alternate layers of the individual components are mfd. then combined and extruded. Pref. the appts. to mfre, the self hardening substance has a set of parallel adjacent plates arranged so that each second plate is equipped with a channel with component supply lines connected to the channels and the channels discharging into a chamber with an outlet slit.
Patent DE-2220626-A1 (DE)
Title: Thermally stable polyacrylates - by terpolymsn of methacrylate or other low mol wt acrylates
Inventor: PESCHK GUENTER J DR ING
IPC: C08F220/14
Filed: 1972-04-27
Abstract: The polyacrylates are produced by terpolymsn. of methacrylate or other low mol. wt. acrylates with acrylonitrile, (meth)acrylic acid and methacrylonitrile and are used as binders for (in)organic fibre fleeces or as coating material. Prefd. monomer mix is methyl/low mol. wt. acrylate (1) with 5-30 pbw acrylonitrile and acrylic acid or methacrylic acid/methacrylonitrile per 100 pts (1).
Patent DE-2222009-A1 (DE)
Title: Dip painting car bodies - by rotation on jig partly submerged in bath
Inventor: ALTSTETTER MANFRED
IPC: B05C3/10
Filed: 1972-05-05
Abstract: Car bodies are only partly submerged in a bath of paint or other liquid material, and then turned on a longitudinal axis so that all parts of the body are treated. The body shell is secured to a jig, lugs on which fit in a collar inside slots in the end of the tank, and the collar can be rotated by a simple mechanism.
Patent DE-2240616-A1 (DE)
Title: Flanging tool for thermoplastic liners - of reinforced pipes, using hot air to heat the plastic prior to flanging
Inventor: JANNI JOHANN
IPC: B29C57/00
Filed: 1972-08-18
Abstract: The liner is pushed into the horizontally clamped pipe until only the part to be flanged is exposed. This part is heated with a hot air heating funnel to plasticity and after pushing on a gasket ring it is flared using a pneumatic or hydraulic truncated cone flanging tool and a plate shaped flanging tool. The press face is maintained until the flange is completely cold. Pref. the liner is of PTFE polypropylene, polyethylene or PVC and the reinforced pipe is of steel or fibreglass reinforced polyester resin.
Patent DE-2256803-A1 (DE)
Title: Water-dilutable or-dispersible polyurethanes - - used as binders for stoving lacquers
Inventor: KATSIMBAS THEMISTOKLIS DIPL CH
IPC: C08G18/42
Filed: 1972-11-20
Abstract: Compsn. comprises (a) 10-20 wt.% satd. linear or branched 5-18 C monocarboxylic acids and 5-15% unsatd. 18-22 C fatty acids with conjugated double bonds; (b) 3-45% di- to tetravalent org. hydroxyl cpds. with 2-15 C atoms; (c) 1-12% polyoxyalkylene cpds. with 1-2 reactive H-atoms and av. mol. wt. of the polyoxyalkylene chain; and (d) 2-55% (cyclo)aliph. or arom. (hydroxy)polycarboxylic acids or their anhydrides - (at least one component (d) being employed in amounts such that the acid numbers of the condensate are 2-160 based on free carboxyl gps. bonded to sec and/or tert. C-atoms, and the condensate has hydroxyl number 120-200 -, the resulting hydroxyl- and carboxyl-gp.-contg. ester is reacted, by heating at 40-110 degrees C, with (f) isocyanates in presence of (g) 2-20 wt.% chain extenders and/or chain stoppers; and the resulting polyurethane resin is rendered water-dilutable or -dispersible by addn. of alkali or strong org. nitrogenous bases. Resulting stoving lacquers may be recoated with top-layers which adhere firmly after stoving.