baber/WOPTO huggingface dataset:
Patent CS-266820-B1 (CS)
Inventor: OLSA MILAN ING
IPC: G02B7/02
Filed: 1987-10-16
Abstract: ďešení se týká objímky pro uložení jednočlenné
nebo dvoučlenné kondenzorové soustavy.
Objímka, mající stejný vnitřní tvar
jako uvedené čočky má na protilehlých stranách
nebo po obvodu vnitřní kruhové stěny
uloženy distanční vložky. Ňa každé distanční
vložce je ve střední části upravena vystouplá
rovinná plocha, jejíž spodní, případně i
horní hrana je tvarována do jednoho až dvou
vrcholů, které dosedají na vypuklé lámavé
plochy kondenzorové čočky. Dále jsou zde vytvořeny
pružné jazýčky, které zajišťují polohu
uložené kondenzorové čočky.
Patent CS-273130-B1 (CS)
Title: Method of atmosphere's moisture indication
Inventor: PACOVSKY JINDRICH ING
IPC: G01N25/56
Filed: 1987-10-26
Abstract: The indication method of atmospheric humidity is solved by a simple and easy production manner so that each sensitive product or closed system (packing, container etc.) can be equipped with its own reliable indicator, which signalises irreversible overrun of the critical value of humidity. The indication method uses selected water-soluble substances of the inorganic or organic origin that pass from the solid state into solution if they are found in the environment where humidity (vapour tension) equals or is higher than humidity above the saturated water solution of this substance. When exceeding the observed critical value of humidity, dissolution of the substance occurs (originally in the form of pellets or crystals), which can be indicated visually (e.g. by the change of position of the weight or spring), by connection or disconnection of the electrical circuit when using remote signalling.
Patent CS-260358-B1 (CS)
Inventor: KOLLARIK DUSAN
IPC: B23B31/10
Filed: 1986-10-24
Abstract: Predmetom riešenia je skíučovadlo s automatickou
výměnou čelustí z čela. Jeho podstatou
je, že každá základná čelusť má vytvořený
aspoň jeden axiálny otvor čiastočne
pretínajúci válcové vedenia pre válcové čapy,
ktoré majú vytvořené prepúšťacie vybrania,
pričom upínacia čelusť má vytvořenu
valcovú stopku pre zasunutie do axiálneho
otvoru základnej čeluste a na valcovej
stopke má vytvořené uzamykacie vybrania
pre spoluzáber s válcovými čapmi.
Jednoduchá konštrukcia z hladiska vyrobitďnosti
zároveň umožňuje spolehlivé polohovanie
vyinieňaných upínacích čelustí v
základnom telese. Riešenie nájde uplatnenie
u obrábacích centier, kde je výhodné vymieňať
čeluste z čela vzhladom na priestorové
možnosti ako aj v roznych automatizovaných
technologických pracoviskách.
Patent CS-271175-B1 (CS)
Title: Travelling mechanism for settling and feeding tanks
Inventor: STRNAD JOSEF ING
IPC: B01D21/02
Filed: 1988-12-05
Abstract: The solution applies to a travelling gear with a peripheral drive, which travels along a travel track. In order to eliminate the danger of stopping the travel gear, namely when the adhesion condition deteriorates, the travelling wheel is provided, along its circumference, with evenly positioned support elements (1), which are mounted either in a rotary or a tilting position on a pin (3). The support elements (1) have, in such an application, formed rollers. When travelling, the support elements (1) of the travelling wheel engage into the respective recess of the travel track. Thus the danger of slipping is eliminated as well as the dependence of the drive force on the friction force is substantially reduced.<IMAGE>
Patent CS-218006-B1 (CS)
Inventor: NETOPIL STANISLAV
IPC: G01R17/04
Filed: 1979-11-30
Abstract: Podstatou vynálezu jsou spínací tranzistory
typu MOS-FET spojené hradly s řídicím
obvodem, přičemž emitory prvních a
druhých dvojic spínacích tranzistorů jsou
spojeny s první testovací špičkou, třetích a
čtvrtých dvojic s druhou testovací špičkou
až n-tých dvojic s n-tou testovací špičkou,
přičemž výstupní svorky jsou spojeny přes
ócljranné odpory s výstupy operačních zesilovačů,
které jsou vždy identicky spojeny s
kolektory jedné trojice spínacích tranzistorů
a přes stabilizační odpory s kolektory
druhé trojice spínacích tranzistorů.
Patent CS-195162-B1 (CS)
Title: Method of preparing amphoteric ion exchangers
Inventor: MIKES OTAKAR
IPC: C08G18/08
Filed: 1977-12-20
Abstract: 1493986 Preparation of amphoteric ion exchangers CESKOSLOVENSKA AKADEMIE VED 12 Feb 1975 [12 Feb 1974] 5984/75 Heading C3P An amphoteric ion exchanger is prepared by reacting a non-ionic polymer gel which is a crosslinked polymer of one or more of an acrylate, methacrylate, acrylamide or methacrylamide, and which contains -OH groups, with a compound which contains two or more reactive groups per molecule and then reacting the reactive groups remaining after said reaction with a compound or mixture of compounds which is or are capable of forming anions and cations by dissociation, or ions in which a positive and a negative site are present in the same group. The compound containing two or more reactive groups per molecule is preferably cyanogen bromide, epichlorohydrin, a diepoxide, a polyepoxide, a diisocyanate or a polyisocyanate. Preferred anion and cation forming compounds and mixtures are an amino acid, a diamine and an amino acid or hydroxyacid, or a dicarboxylic acid and a diamine. In the examples, copolymers of 2-hydroxyethyl methacrylate and ethylene glycol diacrylate; 2- hydroxyethyl acrylate and methylene-bis-acrylamide; 2-hydroxyethyl methacrylate and ethylene glycol dimethacrylate; and diethylene glycol mono methacrylate and ethylene glycol diacrylate; are reacted with (a) epichlorohydrin and arginine; (b) cyanogen bromide and arginine; (c) diepoxybutane and arginine; (d) hexamethylene diisocyanate and arginine; (e) diepoxybutane and taurine and (f) diepoxybutane and epsilon amino caproic acid.
Patent CS-239679-B1 (CS)
Inventor: PRCHLIK VOJTECH
IPC: G01B7/004
Filed: 1983-11-22
Abstract: Řešení se týká zapojení převodníku pro
získání informace o poloze v impulsní formě
z induktivního snímače polohy, jehož výhodou
je jednoduchost, možnost dosažení vysoká
přesnosti při vyhodnocení polohy a induktivního
snímače polohy a získání správná
informace v okamžitá poloze i při vyěěí rychlosti
přemístování snímací části induktivního
snímače polohy.
Podstata řeěení spočívá v propojení
na následující blok : generátor frekvence,
synchronizační obvod, impulsnš-fázový převodník,
tvarovací a filtrační obvod, zesilovač,
budicí část induktivhího snímače polohy,
dvoufázová snímací část induktivního
snímače polohy, dvoukanálový zesilovač, obvod
s nastavitelným zesílením, fázovaci článek,
sčítací obvod, filtrační a tvarovací
obvod, diferenční člen, referenční čítač,
převodník, analogový regulátor, napětověfrekvenční
převodník, klopný obvod, dvoufázový
převodník, tvarovací a synchronizační
obvod.
Zařízení může být využito pro odměřo-
/ání plohy. zejména v oboru řízení obráběcích
strojů, manipulátorů, robotů apod.
Patent CS-233798-B1 (CS)
Inventor: POSKER KAREL
IPC: E21D11/22
Filed: 1983-11-23
Abstract: Vynález ae týká spojovacího prvku poddajné
důlní ocelové výztuže. Je tvořen
horní příložkou a dolní příložkou, spojenou
svorníky, přičemž jedna z příložek je opatřena
přesahem.
Patent CS-241344-B1 (CS)
Inventor: FERIANEC IVAN
IPC: H01L21/70
Filed: 1984-11-30
Abstract: Vynález sa týká riešenia pečiatkovacieho
mechanizmu súčiastok, najma integrovaných
obvodov v súboroch, znakom značiácou
farbou. Pečiatkovací mechanizmus pozostáva
z telesa, v ktorom je otočné vertikálně
uložený dutý hriadel'. V dutom hriadeli
je posuvné vo vertikálnom smere uložený
odpružený hriadel' v hornej časti, ktorého
je uložený kotúč opatřený zo spodnej
strany gumovými poduškami korešpondujúcimi
s číselnicami. Číselnice sú upevněné v
držiaku, ktorý je upevněný na hriadeli. Na
hriadeli je tiež uložené ozubené koleso korešpondujúce
s ozubeným kolesom, ktoré je
uložené na dutom hriadeli, pričom dutý
hriadel' je spojený so štvorpolohovým maltézskym
mechanizmom. V spodnej časti odpruženého
hriadela je pevne připojený tanier
korešpondujúci s kladkou otočné uloženou
na jednom konci páky, pričom na
druhom konci páky je otočné uložená kladka
korešpondujúca s vačkou.
Patent CS-231925-B1 (CS)
Inventor: VACHAL MILAN
IPC: B23D25/04
Filed: 1982-12-17
Abstract: Zařízení spedé do oboru obráběcích strojů
a týká se zařízení k dělení trubkového
a tyčového materiálu o nižší tvrdosti,
např. z plastických hmot. Podstatou vynálezu
je zařízení, kde ve svislých nosnících
nosného rámu jsou nad sebou uspořádány dvě
dvojice ozubených kol. Každá dvojice je
propojena klikou, přičemž na klikách jsou
suvně uložena dvě táhla spojená v horní
části unašečem a mezi táhly je pevně uložen
plochý nůž. Pohon spodní dvojice ozubených
kol je od hnací hřídele a pohon horní dvojice
ozubených kol je vloženými pastorky.
Unašeč je suvně uložen na vodicích tyčích.
Patent CS-245379-B1 (CS)
Inventor: CAPEK KAREL
IPC: C13B35/00
Filed: 1983-12-12
Abstract: fiešení se týká způsobu komplexů sacharézy
s biogenními prvky, jako je železo, měd,
zinek, nikl, mangan a kobalt. K vodnému
roztoku sacharózy nebo směsi jejich monosacharidových
složek se současně přidává
louh sodný nebo louh draselný a roztok ve
vodě rozpustné anorganické soli železa
nebo roztok připravený rozpuštěním jedné
či více ve vodě rozpustných anorganických
solí médi, zinku, niklu, manganu nebo kobaltu
ve vodném roztoku anorganické soli
železa. Potom se upraví pH reakční směsi
kyselinou citrónovou na pH 7 a komplex
se izoluje srážením organickým, s vodou
mísitelným rozpouštědlem, s výhodou etanolem,
metanolem nebo acetonem nebo se
komplex nejprve vysráží shora specifikovaným
rozpouštědlem, znovu se rozpustí ve
vodě a pH jeho vodného roztoku se upraví
kyselinou citrónovou na pH a pak se komplex
izoluje srážením organickým rozpouštědlem,
případně se komplex z reakční směsi neizoluje
a reakční směs se aplikuje jako taková.
Patent CS-213525-B1 (CS)
Inventor: BABAK JAN
IPC: F16F1/40
Filed: 1980-12-31
Abstract: Zamezuje přenosu vibrací z hnacího agregátu na karoserii vozidla a tvoří současně nouzové pojištění proti vypadnutí agregátu z vozu při event. selhání vulkanisovs- :ných spojů pružných lůžek. Podstata epočívé v tom, ža uložení ja tvořeno dvěma pružnými lůžky rozebíratelně upevněnými ny držáku lůžka, jehož opěrný výatepek zasahuje do vnitřního prostoru trubfy konsoly a vyosením.
Patent IE-63424-B1 (IE)
Title: Yeast vector
Inventor: HINCHCLIFFE EDWARD
IPC: C12N1/16
Filed: 1988-04-08
Abstract: A 2 mu m plasmid vector for transforming yeast, especially brewing yeast, comprises a DNA sequence allowing propagation of the plasmid in bacteria, two copies of the 74 base pair FLP recombination site of the 2 mu m plasmid in direct orientation and a DNA sequence coding for a protein or peptide of interest. The plasmid is so constructed that in yeast the bacterial DNA sequence is spontaneously lost. A "gene of interest" is preferably inserted at the SnaBI site.
Patent IE-37906-B1 (IE)
Title: Improvements in steam power stations
IPC: F01K3/02
Filed: 1973-07-13
Abstract: The steam power station includes an accumulator for storing heat drawn from the operating steam cycle during slack operating periods when the power network demand on the station is low, and restoring the heat to the steam cycle at peak or high-demand periods, to adapt the station to a variable demand network. The transfer of heat between the operating installation of the station, which includes a steam turbine, and the accumulator, is made by way of a heat-transfer fluid which is in heat-transfer relation with the steam of which at least a part has done mechanical work in the turbine. The heat-transfer fluid is reversibly circulated in heat-transfer relation with the steam in such a way that the heat-transfer from the steam to said fluid occurs at substantially the same temperature as the transfer from said fluid to the steam. The installation can also heat feed water returning to the steam generator by tapping off live steam for said heating at the outlet from the generator. The installation can have apparatus for separating into liquid and dry steam partially expanded steam issuing from the turbine, the liquid from that apparatus being vaporised by heat from a heat accumulator supplied with heat from the heat source of the installation; all the liquid is vaporised during high-demand periods while in slack periods all the liquid is restored to the feed water circuit to the steam generator.
[US3886749A]
Patent IE-64950-B1 (IE)
Title: Separation of isomers of furo[3,4-c]pyridine derivatives
Inventor: ESANU ANDRE
IPC: C07H17/00
Filed: 1990-04-02
Abstract: Stereoisomers of 7-hydroxy-furo [3, 4-c] pyridine derivatives of the general formula I:… …… wherein R3, R4 and R6 represent various substituents are separated by reading a fully O-acetylated monosaccharide halogenide with a racemate of the selected 7-hydroxy-furo [3, 4-c] pyridine derivative. The (+) and (-) (O-acetylated monosaccaride) (furo [3, 4-c] pyridine 7-yl derivative) ethers formed are separated into the (+) and the (-) ethers by selective crystallization in an hydroalcoholic medium. Either the acetylated or the desacetylated forms may be separated.
Patent IE-47202-B1 (IE)
Title: 3-phenyl-5-substituted-4(1h)-pyridones(thiones)
IPC: C07D213/62
Filed: 1978-06-26
Abstract: A class of novel 3-phenyl-4(1H)-pyridones and pyridinethiones which are broad-spectrum herbicides are described herein. The new compounds are characterized by a small substituent on the nitrogen, and usually bear a 5-substituent chosen from a class described herein. The phenyl ring may be substituted. The compounds are effective herbicides when applied both before and after the emergence of weeds, and are particularly useful for the control of weeds in cotton or rice cropland.
Patent IE-32509-B1 (IE)
Title: Naphthacene derivatives
IPC: C07H15/252
Filed: 1968-11-27
Abstract: 1,212,460. Daunorubicin derivatives. RHONE-POULENC S.A. 27 Nov., 1968 [28 Nov., 1967], No. 56387/68. Heading C2A. Novel daunorubicin derivatives of Formula I wherein R 1 is oxygen or a group of formula in which R 4 is H or optionally substituted alkyl, alkanoyl, thioalkanoyl, aryl, aroyl, carbamoyl, thiocarbamoyl or amidino, and R 5 is H, or R 4 and R 5 together with the common N atom form a piperazin-1-yl group having an optionally substituted alkyl radical on the second N atom, R 2 H, alkyl, aryl, aralkyl, heterocyclic, heterocyclylalkyloran optionally N-substituted aminoalkyl group and R 3 is H, or R 2 and R 3 together are a straight or branched C 3 -C 6 alkylene group, and salts thereof, are prepared by reacting an amino-acid of formula with a compound of Formula II or an acid addition salt thereof, R 1 , R 2 and R 3 being as defined above. The group of formula may be introduced before or after the reaction of daunorubicin (i.e. the compound of Formula II when R 1 is oxygen) with the amino-acid, by treatment with the appropriate hydrazine, e.g. by heating in an organic solvent. The amino acid preferably has the carboxyl group activated, e.g. by esterification with hydroxylated compounds, and the amino group protected, e.g. by a trityl or t-butoxycarbonyl group, or the N-carboxyanhydride may be used. Alternatively the reaction may be carried out in the presence of an N,N<SP>1</SP>-carbodiimide, preferably together with an organic base. The salts may be acid addition salts, or of metals or nitrogenous bases, or may be quaternary ammonium salts. Pharmaceutical compositions having antitumour properties, are in conventional forms for oral, parenteral or rectal administration and comprise the active antibiotic ingredient of Formula I above or a non-toxic salt thereof together with a pharmaceutically acceptable carrier.
[GB1212460A]
Patent IE-38236-B1 (IE)
Title: Ore beneficiation
IPC: B03D1/00
Filed: 1973-09-11
Abstract: Oxidation-reduction potential of a beneficiated ore slurry prepared for flotation is determined under optimum flotation conditions and the slurry thereafter is treated with beneficiating chemical in quantity controlled to the range of the pre-determined oxidation-reduction potential.
[US3883421A]
Patent IE-48808-B1 (IE)
Title: Furyl-nonatetraene derivatives and the pharmaceutically acceptable salts thereof,processes for their preparation starting compounds used in these processes,and pharmaceutical compositions containing them
IPC: C07D307/42
Filed: 1979-08-23
Abstract: The new furyl-nonatetraene derivatives of the formula 
<CHEM>
 and the pharmaceutically acceptable salts thereof, e.g. (E,E,E,E,) -3,7-dimethyl-9-(2,4,5-trimethyl-3-furyl)- 2,4,6,8-nonatetraenoic acid ethyl ester, are effective in regressing the growth of tumors and chondrosarcoma and they are useful as medicaments for therapy of acne, psoriasis and other dermatological disorders. They may be therefore included in pharmaceutical preparations. 
<??>The compounds of the formula I may be prepared by a process which comprises
 a) reacting a compound of the formula
 B-C(CH3) = CH-CH = CH-C(CH3) = CH-COOR<1><0> II
 with a new compound of the formula 
<CHEM>
 or
 b) reacting a new compound of the formula 
<CHEM>
 with a compound of the formula
 HO(CH2)nN(R<7>R<8>) V
 or
 HN(R7R<8>) VI
 The meaning of the substituents see inside the description.
Patent IE-38562-B1 (IE)
Title: 3-alkenyl derivatives of rifamycin sv
IPC: C07D498/02
Filed: 1972-11-30
Abstract: 1389100 3-Alkenyl derivatives of Rifamycin SV GRUPPO LEPETIT SpA 28 Dec 1972 [19 Jan 1972] 59833/72 Heading C2C Novel 3-alkenyl derivatives of rifamycin SV of the general Formula (I) and the corresponding 16, 17, 18, 19, 28, 29- hexahydro derivatives, wherein R is hydrogen, alkyl or aryl-C 1-8 alkyl; R 1 is hydrogen or acetyl; R 2 is hydrogen, C 1-8 alkyl or tert.-butoxycarbonyl; and X is oxygen, imino, N-substituted imino, oximino, O-substituted oximino, hydrazono, N-mono-substituted hydrazono or N-disubstituted hydrazono in which the two substituents are either separate or form a heterocyclic ring together with the common nitrogen atom; are prepared by reacting 3- formylrifamycin SV or its 25-desacetyl or 16, 17, 18, 19, 28, 29-hexahydro derivative with a compound of formula Z=CR 2 -CO-R wherein Z is H 2 or (C 6 H 5 ) 3 P, and R and R 2 are as defined above to give a compound (I) wherein X is oxygen, and when a compound (I) is desired in which X is imino, N-substituted imino, oximino, O-substituted oximino, hydrazono or N-substituted hydrazono, reacting the compound (I) in which X is oxygen with a primary amine, a secondary amine, hydroxylamine, an O-substituted hydroxylamine hydrazine or an N- mono or di-substituted hydrazine respectively. The compounds (I) have antibiotic, anti-viral and anti-tumour activity, and may be admixed with a pharmaceutical carrier to provide pharmaceutical compositions having such activity.
[GB1389100A]
Patent IE-61638-B1 (IE)
Title: A method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons
Inventor: HAMMEL BENT
IPC: F17D1/00
Filed: 1988-06-20
Abstract: A method is disclosed for transport of hydrocarbons in a pipeline flow across large distances, from a first location at an offshore hydrocarbon reservoir to a second location. At said first location a liquid absorbent is provided in the form of a gas-poor hydrocarbon liquid flow. A flow of gas saturated hydrocarbon liquid and released associated hydrocarbon gas is supplied to the gas-poor liquid flow at said first location, the volume of gas-poor hydrocarbon liquid being selected so as to be sufficient for all released associated hydrocarbon gas to be absorbed by the gas-poor hydrocarbon liquid. Then the hydrocarbon liquid with absorbed hydrocarbon gas is transported to said second location. A plant for transport of hydrocarbons in a pipeline flow is also disclosed. The plant comprises an absorption chamber (6) at a first location. Absorption chamber (6) is connected to a well pipe (3). At a second location a separator plant (9) is provided. A first pipeline extends from the liquid portion of separator plant (9) to absorption chamber (6). A second pipeline (7) connects absorption chamber (6) with separator plant (9). In said first pipeline (10) the flowing medium can be pressurized by the aid of a high pressure pump (11).
Patent IE-53407-B1 (IE)
Title: Transistor circuit
IPC: H03K19/088
Filed: 1982-08-16
Abstract: A transistor circuit includes a pull-down circuit (PD) which discharges electric charges stored at the base of an output transistor (Q2) of the circuit. The pull-down circuit (PD) comprises a control transistor (Q5), a two-terminal impedance means (TU) and a resistor (R4). The stored electric charges are discharged to a ground by way of the two-terminal unit (TU) and the resistor (R4). The stored electric charges are discharged selectively when the output transistor (Q2) is turned off, by the control transistor (Q5).
Patent IE-39417-B1 (IE)
Title: Improvements in or relating to bag manufacturing equipment
IPC: B65H9/12
Filed: 1973-11-15
Abstract: 1453705 Making carrier bags F ATTUCCI 16 Nov 1973 [16 Nov 1972] 53268/73 Heading B5D [Also in Division B8] Webs M1, M2, Fig. 2, are welded and cut at 1A, Figs. 2 and 3, into separated flattened bag sections 3, which are forwarded successively by two conveyers 5, 12, comprising belts 9, 7 and 16, 14 respectively, the second conveyer being driven at half the speed of the first. At the exit end of each conveyer, the upper and lower belts become interleaved so as to bend and stiffen the sections. The sections are then stacked on a series of trays 20, Fig. 6, two of which are in stacking positions 20A, 20B at any one time. When the tray at 20A is half full, all the trays are indexed by a conveyer 28 so that the half full tray is filled at 20B, while full trays are moved in succession to a stack-pressing position 20C (which may be omitted), a punching position 20E where portions corresponding to bag handles and access openings are punched out, and a position 20F, Figs. 6 and 8, where the punched-out waste is pushed into a shoot 54, and from which the stack is moved sideways to a position 56A. From the position 56A, the stack is removed manually or by a conveyer 58, or alternatively, it rests on two tables 72, Fig. 12, which can be moved apart to allow it to fall on to previous stacks in a box 74 supported on a table 76 which is rotated 180 degrees between each stack.
[GB1453705A]
Patent IE-43739-B1 (IE)
Title: Process for obtaining protein extracts
IPC: C12N1/06
Filed: 1976-10-06
Abstract: A proteolytic enzyme or enzymatic complex from cultures of Streptomyces fradiae is reacted with a yeast, the soluble phase is separated from the insoluble phase and it is concentrated. The extract thus obtained may be used to enrich food products with highly digestible water-soluble proteins, especially for dietetic foods and for livestock feed.
Patent IE-64673-B1 (IE)
Title: An improved process for the preparation of N,N'-BIS-(alkoxyalkyl)-pyridine-2,4-dicarboxamides
Inventor: BAADER EKKEHARD
IPC: C07D213/81
Filed: 1989-08-03
Abstract: The invention relates to a process for the preparation of N,N'-bis(alkoxyalkyl)diamides of pyridine-2,4-dicarboxylic acid, and to the use of these compounds for preparing drugs for oral administration. The process according to the invention yields the compounds of the formula I <IMAGE> in which R<1> is C1-C4-alkyl which is monosubstituted with C1-C4-alkoxy, by initially A) reacting pyridine-2,4-dicarboxylic acid in toluene with a 2-3-fold excess of SOCl2 at temperatures of 90-110 DEG C, dissolving the resulting intermediate in dioxane and B) mixing 4 times the molar amount of alkoxyalkylamine of the formula II H2N-(R<2>)-OR<3>     (II) in which R<2> is C1-C4-alkylene and R<3> is C1-C4-alkyl with dioxane, and subsequently, at a temperature of -5 to +5 DEG C, either adding the solution prepared as in A) dropwise to the solution prepared as in B), or adding the solution prepared as in B) dropwise to the solution prepared as in A), and then allowing reaction to continue at room temperature.