baber/WOPTO huggingface dataset:
Patent ES-2399685-B1 (ES)
Title: Sistema de lubricación del pistón y el cigüeñal en motores de explosión de dos tiempos
Inventor: MARCONI PIERLUIGI
IPC: F01M1/06
Filed: 2011-02-17
Granted: 2013-12-12
Abstract: Sistema de lubricación del pistón y el cigüeñal en motores de explosión de dos tiempos, según el cual en la pared (1) del cilindro del motor se determinan uno o más conductos (2) que pasan hasta la cámara interior (3) del cilindro, mientras que por el interior del eje cigüeñal (7) con el que se relaciona por medio de una biela (8) el pistón (5) del cilindro, se determina un conducto (9) que comunica con el acoplamiento giratorio de la biela (8) con dicho eje cigüeñal (7), estableciéndose a través de los conductos (2) y de este conducto (9) un suministro de aceite en función de las revoluciones del motor y de la apertura del gas.
Patent ES-2398992-B1 (ES)
Title: Piezas de guiado de carriles ferroviarios sin juntas en curvas durante la operación de liberación de tensiones longitudinales en el carril.
Inventor: QUINTANA GRISALENA AMANDO
IPC: E01B29/20
Filed: 2011-04-14
Granted: 2014-06-17
Abstract: Piezas de guiado de carriles ferroviarios sin juntas en curvas durante la operación de liberación de tensiones longitudinales en el carril.#Tiene por objeto guiar el desplazamiento longitudinal de un tramo de carril al tirar de sus extremos para realizar la liberación de las tensiones longitudinales, de forma que evite el desplazamiento transversal y el desplazamiento vertical o de volcado que el carril tiende a realizar al tirar de él y estar en curva, para lo que comprende un brazo (1, 1a, 1b) dotado de medios de fijación a una traviesa (15, 15a), y que incluye al menos rodillo giratorio (9, 9a) que apoya en un elemento seleccionado entre el alma (3) y el pat�n (5) del carril (6), o ambos.
Patent ES-2501366-B1 (ES)
Title: Grúa torre de pluma abatible con elevación de pluma sin cables
Inventor: MUJIKA GARITANO JUAN BOSCO
IPC: B66C23/82
Filed: 2014-03-28
Granted: 2015-06-11
Abstract: Grúa torre de pluma abatible con elevación de pluma sin cable, estando la pluma (1) y la contrapluma (2) formando un conjunto en el que no se mueve una respecto a la otra sino conjuntamente como bloque, girando dicho conjunto en un punto de rotación (4), siendo el giro en el plano vertical el único giro que se permite con respecto a dicho punto de rotación (4), definiendo respecto a éste como parte delantera el lado donde se levanta la carga y que se sitúa en lado de la pluma (1), y parte trasera el lado de contrapeso (3), que se sitúa en la contrapluma (2), estando el accionador (7) unido en su parte inferior a la punta de torre (6) que se apoya en la torre (8) y en la parte superior al conjunto de pluma (1) y contrapluma (2) en su parte trasera con respecto al punto de rotación (4), de forma que, al levantar la pluma (1) con carga en alcance máximo, el accionador (7) esté trabajando a tracción.
Patent ES-2659452-B1 (ES)
Title: Sistema de extinción de incendios con bolsas o cangilones de agua transportados con aeronaves
Inventor: MUNOZ SAIZ MANUEL
IPC: B64D1/16
Filed: 2016-09-15
Granted: 2018-12-20
Abstract: El sistema de extinción de incendios con bolsas o cangilones de agua transportados con aeronaves consiste en unas bolsas o cangilones (1) llenos de agua, transportados mediante cables o atalajes (7) por un globocometa lleno de helio (2), formado este por unas alas o planos sustentadores (3), que generan la sustentación (L) por la acción del viento, un perfil aplastado vertical (4) y un estabilizador vertical de cola (5). El conjunto es tirado por el helicóptero (6) utilizando el cable (8), lo cual se realiza con muy poco gasto de energía. El peso de la bolsa o cangilón (W) es el que principalmente hay que contrarrestar con la sustentación (L). Puede portar unas válvulas de descarga y aletas de control, no mostradas en las figuras, las cuales permiten estabilizarlo, variar su dirección respecto al viento, su cabeceo y alabeo, y por lo tanto su sustentación (L).
Patent ES-2645299-B1 (ES)
Title: Quemador de gas y aparato de cocción doméstico
Inventor: AGUADO VELA CESAR
IPC: F23D14/64
Filed: 2016-06-03
Granted: 2018-09-12
Abstract: La invención hace referencia a un quemador de gas (2) para un aparato de cocción doméstico (1), con una carcasa de quemador (4) que presenta una cámara de mezcla (7) para mezclar gas combustible (B) con aire primario (L), y con un inyector de gas (16), alojado en la carcasa de quemador (4), para inyectar el gas combustible (B) en la cámara de mezcla (7), donde, entre el inyector de gas (16) y la cámara de mezcla (7), está prevista una primera entrada de aire primario (17) anular para succionar el aire primario (L), donde el inyector de gas (16) presenta una segunda entrada de aire primario (21), guiada a través de éste, para succionar el aire primario (L), donde la segunda entrada de aire primario (21) se estrecha al menos una vez y se ensancha de nuevo en la dirección de la corriente (R) del aire primario (L) a través de la segunda entrada de aire primario (21), y donde el inyector de gas (16) presenta una abertura de salida de gas combustible (28) anular que desemboca directamente en la segunda entrada de aire primario (21).
Patent HR-P20040366-B1 (HR)
Inventor: MARIA ELENA VAZQUEZ
IPC: A61P31/04
Filed: 2004-04-23
Abstract: Gram-negativna, pleomorfna štapićasta bakterija koja uzrokuje bolest gornjeg dišnog i reproduktivnog sustava pilića, naznačena time, da je navedena bakterija izabrana iz skupine Pasteurella trehalosi ili Mannheimia haemolytica i gdje je navedena bakterija beta hemolitički pozitivna, oksidaza pozitivna, katalaza pozitivna, ureaza negativna, nitrat pozitivna, indol negativna, MacConkey pozitivna, glukoza pozitivna, saharoza pozitivna, manitol pozitivna, arabinoza negativna, celobioza negativna, ksiloza pozitivna, salicin negativna, ornitin negativna, eskulin negativna, alfa-fukozidaza negativna i beta-galaktozidaza pozitivna. Patent sadrži još 20 patentnih zahtjeva.
Patent HR-P20041014-B1 (HR)
Title: Novel compounds as opioid receptor modulators
Inventor: BRESLIN HENRY J
IPC: C07D217/26
Filed: 2004-10-28
Abstract: This invention is directed towards compounds of formula (II) as intermediates for opioid receptor modulators, antagonists, and agonists useful for the treatment of opioid modulated disorders such as pain and gastrointestinal disorders.
Patent HR-P20050415-B1 (HR)
Title: A process for the purification of 1,4-butanediol mononitrate
Inventor: SCUBLA TIZIANO
IPC: C07C201/02
Filed: 2005-05-10
Abstract: A process for the purification of 1,4-butanediol mononitrate from 1,4-butanediol dinitrate and 1,4-butanediol, by selective extraction with solvents is herein disclosed.
Patent JO-893-B1 (JO)
Title: Improved seismic Array For Seismic ProsPicting
Inventor: WILLIAM H MAYNE
Filed: 1977-11-13
Granted: 1978-09-30
Abstract: An improved seismic array is provided which has the capability to supply to adjacent recording stations simultaneously , the seismic array has a plurality of seismic deterctor connection points, and a seismic detector is located at each seismic detector, connection point, dual weighting of the output of each seismic deterctor in the array is achieved by connecting dual resistors to the output of each seismic detector, two pairs of wires are also provided in the array, and one pair of wires interconnects one weighted output of each seismic detector to the first end of the array, the second pair of wires interconnects the second weighted output to the second end of the array. An amplifier is provided for use at either or both ends of the array, and a feedback network, including a resistor , is associated with the amplifier, the ratio of the value of the resistance in the feedback network to the weighting resistor at the seismic detector determines the magnitude of the signal appearing at the output of the amplifier from the response of that seismic detector, a chebychev weighted array is achieved by a proper selection of resistor values
Patent JO-1297-B1 (JO)
Title: stalilization of wet process phosphoric acid
Inventor: VIVIAN CHARLES ASTLEY
IPC: C01B25/235
Filed: 1984-07-29
Granted: 1986-11-30
Abstract: An improved method for producing wet process phosphoric acid with low post-precipitation characteristics from an unclarified dilute wet process phosphoric feed acid is described. The feed acid is processed through crystallization, centrifugation and concentration steps under controlled conditions to produce the desired products. The method also allows for the simultaneous production of merchant grade phosphoric acid and clarified merchant phosphoric acid.
Patent JO-1315-B1 (JO)
Title: 5phenylethenylbenzimidazoles
Inventor: CHOW ALFRED WEN-JEN
Filed: 1984-02-13
Granted: 1986-11-30
Abstract: New 2-acylamino-5-phenylethenylbenzimidazoles have been prepared and found to have anthelmintic activity. A species of the invention is methyl [5-(1-phenylethenyl)-1H-benzimidazol-2-yl]carbamate.
Patent JO-1614-B1 (JO)
Title: Machin to full up gas breemous
Inventor: ALI AHMAD ALKAISI
Filed: 1990-06-05
Granted: 1990-07-01
Abstract: MACHIN TO FULL UP GAS BREEMOUS
Patent JO-1622-B1 (JO)
Title: Indenoindole compounds II
Inventor: SAINSBURY MALCOLM
IPC: A61P37/08
Filed: 1990-06-21
Granted: 1991-11-27
Abstract: Compounds of the formula Wherein R is hydrogen or a lower alkyl group R1, R2, R11.and R12 are hydrogen or a lower alkyl group, R3, R4, R5 and R6 are hydrogen, hydroxyl, halogen, a lower alkyl group, a lower alkoxy group or a mono-or di-lower alkyl amino group R7. R8, R9and R10 are hydrogen, hydroxyl, a lower alkyl group, a lower alkoxy group or a mono-or di-lower alkyl-amino group, with the proviso that when R is methyl then at least one of the substituents R1 to R12 is not hydrogen and enantiomers or salts thereof, useful as antioxidants, within the medical and non-medical field composition as well as pharmaceutical compositions comprising said compounds as active ingredient and processes for preparation of said compounds
Patent JO-2770-B1 (JO)
Title: Organic compounds
Inventor: HANS ALLGEIER
IPC: C07C229/64
Filed: 2006-04-10
Granted: 2014-03-15
Abstract: The present invention relates to 1H-Quinazoline-2,4-iones of formula (I) wherein R1 and R2 are as defined in the specification,their preparation,their use as pharmaceuticals, and pharmaceutical compositions containing them.Further, intermediates for the manufacture of compounds of formula (I) are and combinations comprising compounds of formula (I) are disclosed.
Patent KR-810001641-B1 (KR)
Title: Plasma arc vertical shaft furnace
Inventor: WARD GEORGE C
IPC: F27D3/00
Filed: 1978-07-14
Granted: 1981-10-27
Abstract: A vertical shaft furnace comprising melting chamber having upper and lower chamber, outlet means in lower chamber portion communicating with molten metal collecting means for continuosly withdrawing molten metal therefrom, a plurality of downwardly-inclined openings arranged in two vertically spaced plances and in spaced relation about the lower chamber portion, plasma arc torches arranged in said openings, means for connecting an electrical power source between torches and metal charge and means connected to torches for extending and retracting torches relative to lower chamber portion into operating positions thereof.
Patent KR-820001292-B1 (KR)
Title: Coin sorting machine
Inventor: TANAKA A
IPC: G07D5/00
Filed: 1978-11-14
Granted: 1982-07-19
Abstract: A coin inserted into the coin inlet(11) rolls along the protruded piece(12), and passes through the LED diode detector(SW1), the sorting coil(Lo), and the photo-transistor detector(SW2).  If the coin is a false coin, the gate(2) is protruded into the coin passageway as a result of which the false coin is forwarded and is returned through the false coin passageway(B).  If the coin is a true coin, the gate(G1) is retracted from the coin passageway, as a result of which the true coin is directed in another direction(A).
Patent KR-820002026-B1 (KR)
Title: Exothermic polymerization in a vertical fluid bed reactor system containing cooling means therein
Inventor: LEIGH BROWN G
IPC: C08F2/34
Filed: 1979-06-11
Granted: 1982-10-25
Abstract: Olefin polymers are manufd. in vertical fluidized bed reactors of uniform diam. and variable bed height contg. an indirect cooler.  The reactor is operated without a velocity redn. zone or a cyclone to sep. fine particles from the gas.  Thus, ethylene was copolymd. with 1-butene or propylene in a 26.5ft tall fluidized-bed reactor with inner diam. 13.5 in. contg. an internal cooler consisting of 4 vertical loops 4ft long of 1 in. diam. stainless steel tubing through which tempered water was passed.  The catalyst used was a high activity Cr- and(or) Ti-contg. catalyst.
Patent KR-800001281-B1 (KR)
Title: Process for the production of substituted arylal-kylamines
Inventor: KUTTER E
IPC: C07D209/46
Filed: 1980-02-15
Granted: 1980-10-26
Abstract: Title compds. (I; R' = H; R2 = H C1 or methoxy; R3 = H, methoxy, methyleneoxy or ethyleneoxy; R4, R5 = H or lower alky1; R6 = H or lower alkoxy; R7 = lower alkoxy, methyleneoxy, or ethyleneoxy; X = carbony1; n = 2 or 3) were manufd. by a reduction of compd. II. I at 2.0mg/kg i.v., reduced the heart beat rate of guinea a pigs by 47.2%.
Patent KR-830001006-B1 (KR)
Title: 반도체 기억장치의 서입 회로
IPC: G11C17/00
Filed: 1980-04-10
Granted: 1983-05-24
Abstract: 내용 없음.
Patent KR-830002192-B1 (KR)
Title: 텔레비젼 수상기
IPC: H04N9/24
Filed: 1980-07-28
Granted: 1983-10-18
Abstract: 내용 없음.
Patent KR-840001695-B1 (KR)
Title: Spring-loaded resistive lens structure for electron gun
Inventor: VIELAND LEON J
IPC: H01J29/50
Filed: 1980-12-26
Granted: 1984-10-15
Abstract: The electron gun (10) comprises an electron lens structure (42) including a pair of terminal electrode (22,23) fixedly mounted along a pair of glass support rods (12). Disposed between their terminal electrodes is a resistive lens stack of altermate apertured electrode plates (50) and resistive spacer blocks (54).
Patent KR-820000915-B1 (KR)
Title: Method for manufacturing puffing barley products with chocolete
Inventor: ON YUNG KEUN
IPC: A23G3/00
Filed: 1981-03-20
Granted: 1982-05-26
Abstract: Puffed barley product which is uniformly chocolate coated, was prepd. Thus, water content is 12 %, barley is puffed by machine under 14-16 kg/cm2 of pressure for 9-11 min, 1st coating with 60 wt. % of low fat chocolate in the revolving fan, 2nd coating with 300 wt. % of chocolate flake and coating with gum soln. and schellac soln. to give the product.
Patent KR-860000486-B1 (KR)
Title: Process for preparing oxazolidinedione derivatives
Inventor: HUTCHISON ALAN JEFFREY
IPC: C07D209/38
Filed: 1982-10-11
Granted: 1986-04-30
Abstract: Spiro(indoline-oxazolidines) [ I; X, Y = H, F, Cl, Br, NO2, or amino; Z = H or NH2; R = H, C1-4 alkyl, aryl or arylalkyl , useful as aldose reductase inhibitors and, hence, in treatment of diabetes, were prepd. Thus, 5-chloroisatin was alkylated with nchlodrobenzyl to give 1-(p-chlorobenzyl)-5-chloroisatin, which was treated with tetrahydrofuran and tert-potassium butoxide to give 1-(p- fluorophenyl)-5-fluoro-spiro-[indoline-3,5-oxazolidine!-2,2', 4'- trione.
Patent KR-840000655-B1 (KR)
Title: Process for preparing "rosamicin"
Inventor: YU DU-YUNG
IPC: C12P17/06
Filed: 1982-12-29
Granted: 1984-05-09
Abstract: Rosamicin (I; antibiotic 67-694) was prepd. by fermn. with Micromonospora rosaria RK-2.  Thus, a wild type of M.rosaria was treated with MNNG (N-methyl-N'-nitro-N-nitrosoguanidine) to give its RK-2 mutant, which was cultured in a medium contg. saccharose 4, L-asparagin 0.15, KNO3 0.3, CaCO3 0.1, K2HPO4 0.2, MgSO4.7H2O 0.05, FeSO4.7H2O 0.0028, CUSO4.5H2O 0.00025, MnSO4.(4-6)H2O 0.00026, ZnSO4 0.0003, and NaCl 0.01% at 28≰C and 280 rpm for 5 days.  The accumulation of I reached 300 g/mL after 5 days.
Patent KR-870000334-B1 (KR)
Title: Electrically enhanced inclined plate separator
Inventor: SUBLETTE KERRY L
IPC: C10G33/02
Filed: 1983-03-17
Granted: 1987-03-04
Abstract: Horizontal electric coalescer has three compartments through whcih emulsions of polar and non-polar liquids are sequentially passed for sepn. The third compartment has an array of parallel plates in the direction of fluid flow and is inclined to the horizontal. The first section of each plate is formed of electrically conductive material whilst the second section, fixed to the first section as a continution, is formed by an electrical insulator. An electrical source is connected to the first section of each plate to generate an electric field in the passage-way between the plates to expose the liquid mixt. first to the electric field and then to a degrading electric field created by degrading charge density on the second section of insulates.
Patent KR-860001315-B1 (KR)
Title: Process for preparing imidazole derivatives
Inventor: HEERES JAN
IPC: A61K31/495
Filed: 1983-07-05
Granted: 1986-09-13
Abstract: 4-[4-[2-Ar-2-(1H-azole-1-ylmethyl)-1,3-dioxolane-4-ylmethoxy! phenyl!-piperazine (I) [ Q=CH; Ar=halo-substituted phenyl; R=hydrogen, lower alkyl, lower alkanoyl! is prepd. for use as an antibiotic. 1-Ar-2-(1H-azole-1-yl)ethanone (II) is reacted with 4-[4- (2,3-dihydroxy propoxy)penyl!piperazine (III) to give 4-[4-[2 -Ar-2- (1H-azole-1-ylemthyl)-1,3-dioxolane-4-ylmethoxy!phenyl! piperazine (I).
Patent KR-850000825-B1 (KR)
Title: Economy and change device of pattern card in a jacquard looms
Inventor: IM BONG-HO
IPC: D03C3/32
Filed: 1983-07-08
Granted: 1985-06-15
Abstract: A contact roller(4) is connected with the working rod(2') through the connection pin(3) which is linked with the hanging rod(2) of the pattern cylinder(1). A cam(5) which has a shape of "  " type, is contacted with the contact roller(4) and the circular plate(6) is attached to the outside of the cam(5) . At the lower part of the circular plate(6), a switch working rod(9) which has a guide projection(9') is installed. A fixed projection(9") is attached at the outer-upper part of the switch working rod(9).
Patent KR-870001568-B1 (KR)
Title: Precalciner for cement raw material
Inventor: GONDOU DAKEHIGO
IPC: F27B19/04
Filed: 1983-12-22
Granted: 1987-09-04
Abstract: This invention relates to a preheating furance for cement raw materials.  The preheating furance is sepd. into upper and lower chambers, the upper chamber having a dia. smaller than the lower chamber.  A kiln exhaust gas inlet port is located at the bottom of the lower chamber.  For this preheating furance, chamber maintains the cement raw material at specific density and allows sufficient holding time, improving the pre-sintering efficiency.
Patent KR-900005185-B1 (KR)
Title: Direct catalytic synthesis of dimethyldichlorosilane from methyl chloride and silicon
Inventor: PRUDHOMME CHRISTIAN
IPC: C07F7/16
Filed: 1984-09-27
Granted: 1990-07-20
Abstract: Dimethyldichlorosilane is produced by reacting methyl chloride with a solid mass of silicone and a catalyst contg. Cu, 30-1000 ppm of Sn and/or Sb and 0.05-2 % of Li, Na, K and/or Rb, the proportions being based on the total wt. of silicone and catalyst. The process gives improved productivity, the max. dcgree of conversion of the silicone.
Patent KR-890003376-B1 (KR)
Title: The permanent magnet
Inventor: GRAY RICHARD K
IPC: C08L63/00
Filed: 1985-03-08
Granted: 1989-09-19
Abstract: A mechanically strong, flux-loss-resistant, permanent magnet comprises epoxy resin-bonded alloy particles and is prepd. by (A) mixing paticles of rapidly quenched rare earth-iron-boron alloy with a small amt. of dry, free-flowing powder comprising uncured epoxy resin, which is polyglycidyl ether of polyphenol alkane having Tg of at least 150≰C, and an imidazole curing catalyst for the epoxy resin which is inactive at the mixing temp.; (B) pressing the mixt. into a compact having density at least 70% of alloy density; (C) heating the compact so that epoxy resin powder melts to fill voids between alloy particles and to activate catalyst to cure epoxy resin; (D) magnetising the compacted alloy paticles.
Patent KR-890004785-B1 (KR)
Title: Sensitizing agent for electroless plating and method for sensitizing substrate with the agent
Inventor: MATSUZAKI ISAO
IPC: C23C18/28
Filed: 1985-06-26
Granted: 1989-11-27
Abstract: A sensitizing agent for an electroless plating consists of a water or alcohol and a soln. of one or more of palladium(II), silver(I), copper(I), copper(II) or niclel(II) cpds. dissolved in an amide solvent.  The concentration of the metal cpd. in the agent is 0.01- 1.0 wt.%, and the agent has PH 11-13.  The agent is useful for plating through-holes in multilayer printed circuit boards.
Patent KR-910005340-B1 (KR)
Inventor: TAMAI YOSIN
IPC: A61Q7/00
Filed: 1985-10-12
Granted: 1991-07-25
Abstract: 내용 없음.
Patent KR-900000592-B1 (KR)
Title: Shift control apparatus for automatic transmission system
Inventor: TATENO TOSHIAKI
IPC: F16H61/682
Filed: 1986-02-15
Granted: 1990-02-01
Abstract: A shift control appts. comprises a clutch coupled to an output shaft of an engine and a parallel-shaft type gear transmission coupled at its input shaft to the clutch.  A clutch actuator actuates engagement and disengagement of the clutch, theactuator having a controller.  A clutch position detector senses engagement and disengagement of the clutch.  A shift position detector generates a signal indicative of the shift position of the parallel-shaft type gear transmission.  A shift position changeover circuit changes the meshing state of the parallel-shaft type gear transmission.  A memory stores several representing optimum speed ratios determined on the basis of signals indicative of the speed of the car and the position of an accelerator pedal.
Patent KR-900002784-B1 (KR)
Title: Control devices of alternating current elevator
Inventor: NOMURA MASAMI
IPC: H02P3/18
Filed: 1986-03-19
Granted: 1990-04-30
Abstract: The regenerative power generated at braking the elevator cage is consumed at the motor itself and the rest power is consumed at the resistor for regenerative power so that the controller size can be reduced.  When the braking torque command signal is under certain value, the slip of the motor is fixed and the current magnitude is controlled to control the braking torque, but the current magnitude is fixed and the slip is decreased when the command signal is over the certain value.  Then the total heat valance of the system is controlled.
Patent KR-890002223-B1 (KR)
Title: Dyeing method of textile fiber
Inventor: UEDA TOSHIO
IPC: C08F26/02
Filed: 1986-03-21
Granted: 1989-06-23
Abstract: Dyed textile fibers are treated with copolymers of N-substd. secondary allylamine derivs. (having formula CH2=CHCH2NHR.HX e.g. N- methylallylamine.HCl, N-iso-propylallylamine.HCl, N- butylallylamine.HCl, where R is (sbustd.) hydrocarbon, HX is mineral or org. acid) with allylamine (or diallylamine or dimethylallylammonium chloride).
Patent KR-890004334-B1 (KR)
Title: Process for preparing copolyether amides
Inventor: COGUARD JANG
IPC: C08G69/40
Filed: 1986-03-28
Granted: 1989-10-31
Abstract: Novel homogeneous, flexible copolyetheramide (I) is prepd. by (A) preparing a prepolymer by heating reactant in either (i) a mixt. comprising (a) short-chain satd. aliphatic dicarboxylic acid (II), (b) short-chain satd. prim. aliphatic diamine (III), and (c) polymeric diacid (IV) or (d) polymeric prim. diamine (V) or (e) polyoxyalkylenedicarboxylic acid (VI), in amounts such that numbers of NH2 and COOH groups are equivalent, or (ii) a mixt. of compounds from (II) + (III) with monomer (IV), (V) or (VI); (B) maintaining the prepolymer at the polymerization temp. and then reacting with (IV), (V), (VI) or polyoxyalkylenediamine in the presence of an (in)organic oxyacid as catalyst.  (I) has m.p. or softening point above 150≰C, a glass transition temp. of up to -5≰C at 0% humidity and a melt viscosity of 100 cps or more.