baber/WOPTO huggingface dataset:
Patent SE-308746-B (SE)
Inventor: WEDIN T
IPC: H01M8/04
Filed: 1965-12-31
Abstract: 1,165,350. Electrolyte circulation in a galvanic cell. ALLMANNA SVENSKA ELEKTRISKA A.B. 30 Dec., 1966 [31 Dec., 1965], No. 58273/66. Heading H1B. Electrolyte is circulated in a galvanic cell by means of a first storage vessel connected to the lower part of the electrolyte chamber by a conduit for one-way flow of electrolyte to the chamber and a second storage vessel connected to the upper part of the electrolyte chamber by a conduit for one-way flow of electrolyte to the vessel from the chamber and to the first storage vessel by a conduit outside the cell for one-way flow of electrolyte from the second to the first storage vessel, the flow of the electrolyte being effected by varying the gas pressure above the electrolyte in at least one of the storage vessels. As shown in Fig. 1, the pressure in the first vessel 10 is varied by a throttle valve 20 in the gas conduit 18; a rise in pressure forces electrolyte through the conduit 9, the electrolyte chamber 4 and conduit 11 to the second vessel 12; lowered pressure results in flow of electrolyte under hydrostatic pressure from vessel 12 through conduit 21 to vessel 10. In Fig. 2 (not shown), the gas pressure in vessel 12 is variable as in vessel 10 and one-way flow is obtained by inserting non-return valves in conduits 21 and 9 or 11. In Fig. 3 (not shown), gas from the fuel exhaust 6a, via a reducing valve, is used as the pressure-varying gas in vessel 10. In Fig. 4 (not shown), the pressurevarying gas is led into the electrolyte chamber to flush out possible dangerous accumulations of cell gases. Fig. 5 (not shown) illustrates a vessel 10 in which high electrolyte level operates a float valve causing gas to enter the vessel and produce electrolyte flow through conduit 9.
Patent SE-449979-B (SE)
Title: Support frame for kitchen refuse bag
Inventor: SMEDLUND K H
IPC: B65F1/06
Filed: 1982-06-16
Abstract: No further information available at time of publication.
Patent SE-452033-B (SE)
Title: Black lye evaporation
Inventor: DELIN L
IPC: B01D1/00
Filed: 1983-07-06
Abstract: A mixt. of oil and black lye is pumped through a pipe to a heat exchanger. There it is heated to 150-200 deg.C and passes through pipe to the expansion vessel where the mixt. is partially evaporated. Steam leaves through outlet and liq. leaves through pipe to the pump. Part then passes through a branch pipe to an oil separator from where oil leaves via pump. . Conc. black lye leaves through pipe.
Patent SE-452560-B (SE)
Title: Domestic and industrial waste disposal
Inventor: BENTELL L
IPC: F23G5/027
Filed: 1985-02-15
Abstract: Method for destruction of wastes which has as result the creation of insoluble slag and a gas, the combustible components of which are exclusively H2 and CO, comprises: (a) disposing the waste materials in the upper part of a furnace chamber and simultaneously supplying energy at the bottom of the furnace in the form of hot oxidising gas; (b) evacuation of liq. slag from the bottom of the furnace tank and extn. of the gas produced from the top; and (c) transporting the gas produced to a reaction chamber next to the furnace and simultaneously providing energy in the form of hot gas.
Patent SE-450300-B (SE)
Inventor: NORDSTROM K L
IPC: G01D5/12
Filed: 1985-05-17
Abstract: A control device arranged to generate electrical signals through manual control movements, for adjusting a controlled element (14), comprises a control stick (3) that is composed of an inner (4) and an outer (5) stick part and which projects outward from a supporting surface (2) adapted to support an operator's hand when it grips the two stick parts. Moments opposing control movements and biasing toward the neutral position ar generated by a rod-like spring element (6) that connects the two stick parts (4, 5). In operative connection with this spring element there is a signal emitting device (10), preferably in the form of resistive or inductive transducers which sense the position of the outer stick part in relation to the inner one and which emit the electrical signals in dependence upon the control movements.
Patent SE-468289-B (SE)
Title: Drain with mounting flange and method for connecting it to a floor
Inventor: JANSSON JAN OLOF
IPC: E03F5/04
Filed: 1989-12-19
Abstract: Drain, comprising a mounting flange 2, a drain trough 29 connected to the mounting flange with water seal 28, an inlet part enclosed by the mounting flange and an outlet pipe connected to the drain trough, and a method for connecting the drain to an existing floor element. The novel feature of the invention is that the mounting flange 2 comprises a first annular part 4 with a cylindrical outer boundary surface 16 and a second annular part 5 which projects from the outer boundary surface 16 of the first part at its upper boundary surface 17, is integrated with the first part 4 and has a cylindrical outer boundary surface 6. The upper boundary surface 7 of the mounting flange 2 preferably slopes downwards and inwards from the outer boundary surface 6 of the second part 5. The lower boundary surface 7 of the second part 5 is flat. Projecting from the outer boundary surface 16 of the first part 4 there are securing lugs 14 which are arranged on the lower boundary surface 3 of the mounting flange and are arranged in a plane which is parallel to, and oriented at a defined distance from, the lower boundary surface 7 of the second part 5. The mounting flange 2 is secured to a floor 8 in such a way that the lower boundary surface 7 of the second part 5 rests on the top of the floor 8 and the securing lugs 14 engage with the underside of the floor 8. The outer boundary surface 6 of the second part 5 has a height essentially corresponding to the thickness of the adjacent floor material 9. <IMAGE>
Patent SE-469923-B (SE)
Inventor: JOENEMO P
IPC: A47L15/14
Filed: 1992-03-03
Abstract: PCT No. PCT/SE93/00167 Sec. 371 Date Sep. 2, 1994 Sec. 102(e) Date Sep. 2, 1994 PCT Filed Feb. 26, 1993 PCT Pub. No. WO93/17610 PCT Pub. Date Sep. 16, 1993A cleaning machine operating with granules having a pump for ejecting liquid optionally with or without granules which are heavier than the liquid, through nozzles against the goods to be cleaned in a treatment space (10) connected to the suction side of the pump via a bottom outlet (11). A granule valve having a socket (38) open at each en thereof is associated with the bottom outlet, said socket being guided for vertical displacement between the upper position with an opening at the lower end of the socket for drawing liquid with granules entrained therein by the pump from the treatment space at a lower level, and a lower position with the opening at the lower ned of the socket closed for drawing liquid only by the pump from a higher level at the upper end of the socket. A projecting circumferential flange (49) is provided on the socket (38) below the upper end thereof said flange forming together with a cap (44) provided over the socket, a labyrinth seal for preventing granules from being withdrawn together with the liquid.
Patent CN-85100748-B (CN)
IPC: C25C7/00
Filed: 1985-04-01
Abstract: 一种以氧化钕或镨钕富集物电解法连续生产金属钕及钕－铁合金的槽型结构。采用耐高温和耐氟盐腐蚀的石墨槽体及不易与电沉积金属起作用的高熔点金属钼作接受器，槽体上部插入带有凸缘的筒状石墨阳极和钼（或铁）阴极。槽体外部有一层具有还原气氛的碳粒保温结构。这种电解槽保温好，寿命长、操作简单，不需辅助热量，可完全自热连续电解。
Patent CN-1009334-B (CN)
Title: 空气净化器
Inventor: THORNE JOHN
IPC: B01D46/02
Filed: 1987-03-13
Abstract: 一种空气净化器(10)，在污浊空气进口(14)和清洁空气出口(16)之间，具有一个隔层(12)，上面装有若干过滤元件(20)。该隔层(12)装有以大于待过滤污浊空气压的压力向这些过滤元件(20)的开口提供清洁空气的装置，以便防止污浊空气逸出。本空气净化器适于从运输船向工厂或仓库输送奶粉或水泥等特质时，从这些工厂或仓库的大气中除去粉尘。
Patent HK-1041757-B (HK)
Title: Method and system for locating a mobile subscriber in a cdma communication system
Inventor: DAVID K MESECHER
IPC: G01S19/35
Filed: 2002-05-02
Abstract: The present inventation provides a base station comprising: 
a plurality of antennas, each of the antennas separated by a known distance; 
means for transmitting a first spread spectrum signal having a first code; 
means for receiving, using the plurality of antennas, a second spread spectrum signal having a second code, the second spread spectrum signal time synchronized with the first spread spectrum signal; 
means for making a distance determination based on in part a timing difference between the second code of the received second spread spectrum signal and the first code of the base station's transmitted first spread spectrum signal; 
means for comparing a phase difference of a carrier signal of the second spread spectrum signal as received by each of the plurality of antennas; and 
means for determining an angle of the received second spread spectrum signal using the known distance between the antennas and the phase difference; and 
means for determining a location of a source of the second spread spectrum signal using the determined angle and the distance determination.
Patent HK-1043136-B (HK)
Title: Compound
Inventor: GUY MARCK
IPC: G02F1/1337
Filed: 2002-05-30
Abstract: The present invention provides a compound comprising a repeating unit of formula (I)  <CHEM>     in which:    A   represents a nitrogen atom, a carbon atom, a group -CR<1>- or an aromatic or alicyclic group, wherein R<1> represents a hydrogen atom or lower alkyl,  M represents a repeating monomer unit;  n<1> to n<3>   each independently represent 0 or an integer having a value of from 1 to 3, with the proviso that 1 < n<1> + n<2> + n<3> < 4;  P<1>, P<2>, P<3>   each independently represent a photoactive group; and  B<1> to B<4>   each independently represent a residue of general formula II <CHEM>    as well as photoactive polymers prepared from such compounds and the use of such compounds in the preparation of liquid crystal orientation layers and structured and unstructured electro-optical elements.
Patent HK-1044122-B (HK)
Title: Liposome compositions for improved drug retention
Inventor: LUKE S S GUO
IPC: A61K47/32
Filed: 2002-08-05
Abstract: A liposome composition for enhanced retention of a quinolone compound, and in particular of a fluoroquinolone compound, is described. Entrapped in the liposomes is a polyanionic polymer effective to form a complex with the fluoroquinolone. A method of preparing the liposomes which includes a process for removal of unentrapped polyanionic polymer is also described.
Patent HU-184205-B (HU)
Title: Device for fastening rails onto sleeper
Inventor: STEUTEKNUEL WILLI
IPC: E01B9/30
Filed: 1979-03-10
Abstract: The device for fixing rails on a sleeper is arranged on the guide plate arranged alongside the rail. A resilient clamp (16) made of bar steel and curved in U-shape is arranged on this plate. The clamp (16) surrounds a fixing screw, and with the free ends (22, 24) of curved sections (30, 32) this clamp (16) presses on the rail base, lateral stop elements (36, 38) oriented essentially perpendicular to the rail bearing on the U-legs (26, 28) of the clamp (16) and preventing their displacement relative to the plate. These lateral stop elements (36, 38) are arranged on the plate. The lower surfaces of the U-legs and the lower surfaces of the curved sections are separated from the upper surface of the rail base by only a small space, which is dimensioned in such a way that, in the event of a tilting movement of the rail, the upper surface of the rail base makes contact first with the lower surfaces of the curved sections (30, 32) and then with the lower surfaces of the U-legs (26, 28) of the clamp (16), before this clamp (16) undergoes plastic deformation. <IMAGE>
Patent IT-1249076-B (IT)
Title: Device with optical sensor for controlling and regulating the cutting of ornamental chains
Inventor: CARTESI FABIO
IPC: B26D/
Filed: 1991-04-08
Granted: 1995-02-11
Abstract: A device with optical sensor for controlling and regulating the cutting of ornamental chains, whereby ornamental chains of undefined length are cut into lengths or sections. It consists of a device comprising in combination: means for keeping the chain taut at the reading and regulating point; an optical sensor 15, 16 connected to a programmable electronic pulse counter; means 18, 19 for regulating the position of the optical sensor in the direction of advance of the chain 1; and means 14 controlled by the pulse counter for cutting the advanced chain. <IMAGE>
Patent IT-1252459-B (IT)
Title: Unita' convogliatrice di uscita per macchine condizionatrici di sigarette in pacchetti rigidi a coperchio incernierato
Inventor: BOLDRINI FULVIO
IPC: B65B41/02
Filed: 1991-07-29
Granted: 1995-06-16
Abstract: Unità convogliatrice (2) di uscita per macchine condizionatrici (1) di sigarette in pacchetti (8) rigidi a coperchio incernierato, in cui un primo convogliatore, costituito da una ruota (3) di incarto, alimenta in successione dei pacchetti (8) semi-finiti a rispettive sedi (14) portate da un convogliatore (4) di essiccazione e provviste, ciascuna, di una parete (24) elastica che viene spostata, tramite un elemento attuatore (48), all'atto dell'introduzione di un pacchetto (8) all'interno della sede (14) stessa, e, quindi, rilasciata per comprimere assialmente il pacchetto (8) e mantenerlo in una corretta configurazione finale di essiccazione. (Figura 1)
Patent IT-1251043-B (IT)
Title: Dispositivo a luce intermittente per decorare oggetti d'abbigliamento,bigiotterie e simili
Inventor: CORTI PAOLA FRANCESCA
IPC: A41D/
Filed: 1991-08-02
Granted: 1995-05-02
Abstract: Dispositivo per decorare e distinguere oggetti di abbigliamento, bigiotterie e simili ottenuto da effiggi, anche stilizzate od astratte, di animali e fiori comprendenti nei punti dominanti per estetica e funzioni, LED a luce variamente colorata, fissa od intermittente, alimentati da pilette elettriche sopportate dall'oggetto stesso, essendo di preferenza i LED predisposti in corrispondenza degli occhi degli animali, al centro della corolla nei fiori ed in genere al centro di zone che nella figurazione presentano andamenti radiali o ove converge il motivo estetico.
Patent IT-1252061-B (IT)
IPC: A61K8/00
Filed: 1991-11-22
Granted: 1995-05-29
Abstract: PCT No. PCT/EP92/02597 Sec. 371 Date May 18, 1994 Sec. 102(e) Date May 18, 1994 PCT Filed Nov. 12, 1992 PCT Pub. No. WO93/09760 PCT Pub. Date May 27, 1993Dermatological and cosmetic compositions having high endermicity and antiageing activity and high stability are herein described consisting of: 1) emulsifying and self-emulsifying agents, having o/w activity formed by a mixture containing (as % w/w); 1') polyethylene glycol mono- or distearate 0.5-5.0%; 2') polyglycol esters of saturated or unsaturated C14-C20 fatty acids 1.0-10.0%; 3') cetyl alcohol and optionally other higher alcohols, comprising free or esterified sterols 1.0'16.0%; 2) sodium versenate and antioxidant agents 0.1-5.0%; 3) anti-mould and bacteriostatic agents 0.05-0.1%; 4) active ingredients 1-30%; 5) purified water F.U. q.s. to 100%.
Patent IT-1255458-B (IT)
Title: Procedimento per la preparazione di derivati beta-lattamici alogenati
Inventor: DA COL MARCO
IPC: C07D501/00
Filed: 1992-05-11
Granted: 1995-11-02
Abstract: Si descrive la preparazione di derivati ?-lattamici alogenati mediante introduzione di un atomo di cloro in posizione 3 del nucleo cefemico a partire da un 3-solfonilossicefem. Tali prodotti di partenza vengono posti a reagire con un donatore di ioni cloro in ambiente basico.
Patent IT-1247152-B (IT)
Title: Mechanical distributor with rollers for sachets of sugar
Inventor: DISARO' ANTONIO
IPC: B65D/
Filed: 1991-01-24
Granted: 1994-12-12
Abstract: This is a mechanical distributor for sachets of sugar. The sachets are arranged one above the other inside a container and expelled from the bottom by means of rollers in abrasive material. The rollers are driven manually by an external knob which rotates the gears, connected by means of pins to the rollers themselves, in such a way as to rotate in the same direction. <IMAGE>
Patent IT-1249843-B (IT)
Title: Automatic system for the display of information, for example, for the display of reservations aboard public transit vehicles, such as railroad cars
Inventor: PAVAN ALBERTO
IPC: G11B/
Filed: 1991-10-17
Granted: 1995-03-28
Abstract: The information pertaining to the reservation of the seats (as well as possible auxiliary information, such as the station which the train is approaching and the anticipated time of arrival) is presented at the seats themselves on display units 3 which go to centralised car units 10 which are connected together by a general bus structure, for example, via the telephone line of the train. The information to be presented on the display units 3 can be loaded in a centralised manner, for example, from a diskette D prepared by the reservation booking office, to be presented on the various display units 3. The system is also able to automatically update the information presented, even during the movement of the train through consecutive legs of its route. <IMAGE>
Patent IT-1261343-B (IT)
Title: Metal support for catalytic converters
Inventor: BALLIN FELICE
IPC: F01N3/00
Filed: 1993-11-29
Granted: 1996-05-14
Abstract: The support comprises a body with canals or cells for the passage of the gases being cleaned, known as a matrix and including, in alternating arrangement, at least one component of corrugated sheet and one component of noncorrugated sheet made of metal alloy, forming a so- called honeycomb structure, said matrix being enclosed in a tubular metal shell, forming part of the housing of a catalytic converter and known as the skirt. According to the invention, said component made of corrugated sheet 11.1 and said component made of noncorrugated sheet 12.1, being mutually wound about at least one axis, are mutually secured against axial telescopic slippage ("telescoping") as a result of the thermal, vibrational, and dynamic stresses, to which the support is subjected during operation, by means of mutual fitting together, such as projections 18, 20.2 provided in at least one of the components 11.1, 12.1 and corresponding indentations 20.1, 19 provided in at least the other of said components 12.1, 11.1. <IMAGE>
Patent IT-1260285-B (IT)
Title: Chiavetta a rotazione per accoppiamento di profili mediante incastro rotazionale su scanalature in sottosquadro
Inventor: BETTIN GIANCARLO
IPC: E06B/
Filed: 1992-11-30
Granted: 1996-04-03
Abstract: Chiavetta a rotazione (A, D) per accoppiamento di profili contrapposti (C-B, E) comportante da un lato una prima testa di chiave sostanzialmente a "T" (4, 51) il cui gambo forma il collo della chiavetta (1-3, 52) si connette a mezzi contrapposti (1, 55) per l'incastro di un profilo da ancorare in adiacenze parallela al primo, caratterizzato dal fatto che la detta prima testa a chiave (4, 51) ha lo spessore della sua testa sostanzialmente più ampio dell'apertura trasversale della rispettiva scanalatura (C1) in cui deve essere inserita, e per almeno un suo lato, con sagoma cuneiforme per formare una spina di pesce elasticamente cedevole (43), in grado di permettere la penetrazione trasversale di detta testa a chiave (4, 51) ma non la sua estrazione trasversale dalla detta rispettiva scanalatura a "C" (C1).(FIG. 2)
Patent IT-1259828-B (IT)
Title: Distributore automatico di supporti audiovisivi e digitali ed elementodi identificazione associato
IPC: G07F7/06
Filed: 1992-07-03
Granted: 1996-03-28
Abstract: Un dispositivo automatico per la distribuzione di supporti audiovisivi e digitali, comprende un magazzino (M) destinato a contenente i supporti (S), almeno un manipolatore (T) per il carico e lo scarico all'esterno dei supporti attraverso una feritoia (6), mezzi per la lettura di un elemento di identificazione ad ogni supporto (S), mezzi per selezionare un supporto da parte di un utilizzatore, e mezzi di riscossione automatica (7) del supporto preselezionato. Il magazzino (M) è formato da sezioni distinte (M1, M2, M3) per corrispondenti supporti (S1, S2, S3) di formati e dimensioni differenziate. Il manipolatore (T) comprende un carro (8) mobile lungo primi mezzi di guida verticali (10, 11), una slitta (15, 16) mobile lungo secondi mezzi di guida orizzontali (14) solidali al carro, e provvista di mezzi a pinza (21) per il maneggiamento dei supporti. I mezzi a pinza comprendono ganasce mobili (20, 21, 22) e mezzi (28, 29) per variare automaticamente la reciproca distanza delle ganasce (20, 21, 22) lungo quarti mezzi di guida.
Patent PT-102140-B (PT)
Inventor: SAEZ JUAN JOSE ANDANI
IPC: A61F2/36
Filed: 1998-03-27
Abstract: The invention relates to improvements in femoral shafts, which consist in: replacement of the cylindrical surface of its distal zone by longitudinal striations 1; expansion of the front and lateral zones of the collar 2; an increase in the radius of curvature 3 of transition between sections; and rounding with a greater radius of the outer upper angle 4 of the proximal zone. <IMAGE>
Patent PT-104000-B (PT)
Title: Processo de focagem cega de imagens
Inventor: ALMEIDA MARIANA SA CORREIA LEI
IPC: G03B13/00
Filed: 2008-03-18
Abstract: RESUMO PROCESSO DE FOCAGEM CEGA DE IMAGENS ESTA INVENÇÃO CONSISTE NUM MÉTODO DE FOCAGEM DE IMAGENS QUE PODE SER UTILIZADO EM MÁQUINAS FOTOGRÁFICAS, APARELHOS DE RADIOGRAFIA, TELESCÓPIOS ASTRONÓMICOS, ETC. AO CONTRÁRIO DOS MÉTODOS QUE CARACTERIZAM O ESTADO ACTUAL DA TÉCNICA, O MÉTODO AQUI DESCRITO NÃO EXIGE O CONHECIMENTO DE CARACTERÍSTICAS RESTRITIVAS DA DESFOCAGEM, FACTO QUE PERMITE A SUA APLICAÇÃO A IMAGENS QUE SOFRERAM UM LEQUE DE DESFOCAGENS MUITO GENÉRICO. A IMAGEM NÍTIDA E O OPERADOR DE DESFOCAGEM SÃO ESTIMADOS CONJUNTAMENTE, ATRAVÉS DA OPTIMIZAÇÃO DUMA FUNÇÃO DE CUSTO QUE INCLUI UM REGULARIZADOR QUE FAVORECE IMAGENS COM CONTORNOS ESPARSOS. COMO A OPTIMIZAÇÃO DIRECTA DA FUNÇÃO DE CUSTO NÃO CONDUZ EM GERAL A BONS RESULTADOS, A INVENÇÃO INCORPORA UMA TÉCNICA PARA GUIAR A OPTIMIZAÇÃO PARA RESULTADOS DE BOA QUALIDADE. ESTA TÉCNICA COMEÇA POR TER EM CONTA OS ASPECTOS MAIS EXTENSOS E MAIS CONTRASTADOS DA IMAGEM, TOMANDO PROGRESSIVAMENTE EM CONTA DETALHES DE MENOR DIMENSÃO E/OU DE MENOR CONTRASTE. DOMÍNIO TÉCNICO DA INVENÇÃO: MELHORAMENTO DE IMAGENS.
Patent PT-104902-B (PT)
Title: Método de inspecção não destrutivo e não invasivo de materiais vegetais baseado na utilização de radiação electromagnética
Inventor: FERREIRA ANTONIO CESAR SILVA
IPC: A23L5/30
Filed: 2009-12-21
Abstract: ESTA INVENÇÃO DESCREVE UM MÉTODO PARA A MONITORIZAÇÃO DE PARÂMETROS INTRÍNSECOS DE ROLHAS DE CORTIÇA NATURAL, COM BASE NUM MÉTODO NÃO INVASIVO E NÃO DESTRUTIVO, POR EXEMPLO A ESPECTROSCOPIA RX, TENDO EM VISTA A SEGREGAÇÃO E CATEGORIZAÇÃO DE OBJECTOS (ROLHAS) SEGUNDO A RELAÇÃO DESSES PARÂMETROS COM CARACTERÍSTICAS RELEVANTES PARA O DESEMPENHO DO VEDANTE, COMO POR EXEMPLO A PERMEABILIDADE A GASES. ESTA INVENÇÃO DESCREVE AINDA O PROCESSAMENTO DA INFORMAÇÃO SOBRE OS PARÂMETROS FÍSICOQUÍMICOS DA CORTIÇA DIRECTAMENTE A PARTIR DOS DADOS RECOLHIDOS NA LINHA DE PRODUÇÃO.
Patent RO-85049-B (RO)
Inventor: FAMY MAHOMED ABDEL HAMID
IPC: C07F9/38
Filed: 1981-11-18
Abstract: Inventia se refera la un procedeu pentru prepararea unor derivati organo-fosfonotioici cu formula mgenerala I: (vezi foemula) în care R reprezinta un radical alchil inferior, R1 reprezinta un radical alchil cu 1...8 atomi de carbon sau un radical fenil, eventual, substituit cu metil, halogen sau trifluormetil, R2 reprezinta un radical alchil tertiar cu 4...8 atomi de acarbon, compusi cu activitatea insecticida si nematocida, carcatwerizat prin aceea ca alchilfosfonotioc cu formula generala Ii: (vezi formula) în care R si R2 au semnificatiile de mai sus, iar X reprezinta un atom de halogen, reactioneaza cu un compus cu formula henerala III: (vezi formula) în care R1 prezinta semnificatiile sus-mentionate, la emperaturi cuprinse între 20 si 100 degree C, într-un nsolvent organic, ales dintre benzen, toluen, ciclohexan si butan-2-ona, în prezenta unei amine tertiare, aleasa dintre trimetilamina, trietilamina, dimetilanilina, dietilanilina sau piridina sau o solutie apoasa de hidroxid de sodiu.