baber/WOPTO huggingface dataset:
Patent CS-229067-B1 (CS)
Title: Medicinal preparation with antiarhythmic and supporting effect applied with hypoxia,and method of preparing active substance thereof
Inventor: STOLC SVORAD
IPC: C07D471/04
Filed: 1981-08-20
Abstract: The invention relates to (-)-cis-2,8-dimethyl- 2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b]indole of the formula I <IMAGE> its salts, its preparation and appropriate pharmaceutical compositions, in particular having antiarrhythmic and subsidiary action in myocardial hypoxia. The compounds according to the invention also have a hypotensive, local anaesthetic, spasmolytic, x-adrenolytic and central sedative action. The compositions can be present in a liquid, semi-liquid and solid administration form. The compounds according to the invention are prepared from (+/-)-cis-2,8-dimethyl- 2,3,4,4a,5,9b-hexahydro-1H-pyrido[4,3-b]indole via the salt with an optically active acid, advantageously (+)-O,O'-dibenzoyl-D-tartaric acid, from which the (-)-cis-isomer is liberated by rendering it alkaline and optionally converting it into a pharmaceutically suitable salt, preferably the dihydrochloride (m.p. 270-274 DEG C, with decomposition) or the dipalmitate (m.p. 55-56 DEG C). The active substances according to the invention eliminate cardiac arrhythmias in doses which are lower than the agents used hitherto and at the same time have relatively low acute toxicity and the ability to protect the cardiac muscle during oxygen deficiency. Central effects such as neuroleptic and thymoleptic effects are additionally present.
Patent CS-234319-B1 (CS)
Inventor: OTT FRANTISEK
IPC: H02P25/26
Filed: 1982-10-01
Abstract: Předmětem vynálezu je zapojeni
asynchronního elektromotoru pro hlavní
pohon obráběcího stroje, napájeného
z třífázové sítě, umožňujícího kromě své
hlavní funkce také pootáčení ozubených
převodů za účelem dořazování rychlostí
otáček vřetena,posuvů a jemné peotáčení
vřetena za účelem jeho polohování.
Vynález řeáí problém dořazování
rychlostí otáček vřetena a posuvů v případech,
kdy přesouvaná ozubená kola
do sebe nezapadnou. Zapojením podle vynálezu
je umožněno dořadit pomoci hlavního
asynchronního elektromotoru, a to
jeho krátkodobými intervalovými sepnutími.
Obsahuje dvojici stykačů, provádějící
zapojení do trojúhelníku a dvojici stykačů
pro opačný běh, provádějící zapojeni
do hvězdy. K zapojení do hvězdy je
alternativně přiřazen další stykač, na
jehož jednu fázi. je přiváděno napětí
z odbočky transformátoru.
Patent CS-232698-B1 (CS)
Inventor: DIMOVSKY KOLE
IPC: G03B15/02
Filed: 1983-09-29
Abstract: Halogenová prosvětlovací skříň je určena
k intenzivnímu rovnoměrnému prosvětlení
transparentních obrazů nebo snímaných
předloh s omezením tepelného účinku. Za
tímto účelem je dno tělesa skříně tvořeno
dvěma šikmými rovinnými plochami, proti
nimž jsou na protilehlých stěnách dvě rady
otvorů. Vně těchto otvorů jsou umístěny
držáky s ventilátory a světelnými zdroji.
Tyto zdroje leží v ose otvorů a skládají se
vždy z halogenové žárovky a interferenčního
zrcadla. Světelné zdroje mají regulační
prvky k seřízení směru a úhlu osvětlovacího
paprsku.
Halogenová prosvětlovací skříň se používá,
zejména pro snímání černobílých a
barevných zkušebních obrazců pomocí kinematografických
kamer. Podle velikosti osvětlení
předlohy se použijí buď vždy dva
a dva zdroje v rozích skříně (pro nižší
osvětleníJ, nebo všechny čtyři po obou stranách
(pro vyšší osvětlení).
Patent CS-240516-B1 (CS)
Inventor: POLIEVKA MILAN
IPC: B01D19/04
Filed: 1983-11-29
Abstract: Odpěnovač a/alebo komponent odpeňovacieho
prostriedku na báze aspoň jednej
uhlovodíkovej zlúčeniny a najmenej jednej
organickej polárnej zlúčeniny pozostáva zo
70 až 99,7 % hmot. uhfovodíka alebo zmesi
uhlovodíkov o molekulovej hmotnosti 150
až 3 000 g.mol-1 a 0,3 až 30 % hmot. najmenej
jednej polárnej organickej zlúčeniny,
vybranej zo skupiny zahrnujúcej produkt
reakcie karboxylovej kyseliny C12 až C2.i alebo
mesi týchto karboxylových kyselin s
amínofenolmi alebo hydroxycyklohexylamínom,
a/alebo sulfokyselín alebo ich solí s
alkanolamínmi C2 až C6, zmesi aspoň dvoch
alifatických alkoholov C8 až C16 s prímesou
esterov, tuk a/alebo čiastočne amonolyzované
tuky.
Patent CS-263104-B1 (CS)
Title: Device for thread cutting and holding
Inventor: FUCIK BORIVOJ
IPC: D04B15/60
Filed: 1987-10-06
Abstract: A thread cutting and holding device in double-cylinder circular knitting machine has a movable cutting plate, stationary cutting blade and pressing finger. Stationary and movable plates are arranged between the cutting plate and the pressing finger. Both movable plates are controlled by one lever. The stationary holding plate is arranged between the movable plates and is provided at its operative end with a V-shaped cutout, in which the threads are collected and held be the movable holding plate. The movable holding plate is for this reason provided with a side cutout with transverse holding edge.
Patent CS-241322-B1 (CS)
Inventor: PASTOR OLIVER
IPC: B65G43/00
Filed: 1983-10-26
Abstract: Navrhnuté riešenie sa týká zariadenia
pre mechanizovaný posun krytov a podobných
prvkov obrábacích strojov.
Pracovný kryt sa pohybuje po vodiacej
kolaji na kladkách, z ktorých jedna je poháňaná
elektromotorom. Poháňaná kladlka
má pevne připojené ozubené koleso, ktorého
zuby zapadajú do ozubenia na vodiacej
kolaji. Ozubenie zaisťuje spolehlivý rozběh
z kludovej polohy. Další pohyb po hladkej
vodiacej kolaji zaistuje poháňaná kladka.
Patent CS-270955-B1 (CS)
Title: High-power semi-conductor component
Inventor: PINA BOHUMIL ING
IPC: H01L21/60
Filed: 1987-11-19
Abstract: The purpose of this invention is to decrease the mechanical failure possibility in a semiconductor part and lower the demands on mechanical machining its internal contact surfaces. The said purpose is accomplished by the fact that between the plate (1), having a semiconductor structure and a plate (3) of a high-doped semiconductor material dilatation molybdenum or tungsten foil (2) with 0.02 to l.5 mm thickness is put in. This dilatation foil (2) is connected through a rigid joint (9) with the plate (1), having a semiconductor structure and the plate (3) of a high-doped semiconductor material.<IMAGE>
Patent CS-213180-B1 (CS)
Inventor: FIALA JOSEF
IPC: B21D15/10
Filed: 1980-12-11
Abstract: Vynález se týká výroby trubek s bočním
hrdlem z válcové trubky, a jeho předmětem
je způsob zařízeni pro výrobu těchto trubek
vyboulovánlm tlakem tekutiny, působícím
zevnitř trubky při současném stlačování
čsl trubky axiálním tlakem, přičemž
tlak tekutiny i axiální tlak jsou vyvozeny
působením výbuchové vlny, vzniklé po
roznětu nálože výbušniny ( obr. 1).
Vynálezu lze využit při výrobě jednoduchých
nebo vícenásobných hrdel z válcové
trubky, zvláště o průměrech větších než
100 mm.
Patent CS-241212-B1 (CS)
Inventor: TRMAL VLADIMIR
IPC: F16M7/00
Filed: 1983-11-25
Abstract: Bezpečnostní klín je určen k přidržování
rozměrných válcovitých těles, jako například
kotoučů rotačkového tiskového papíru, při'
jejich skladování.
Podstata řešení záleží v tom, že bezpečnostní
klín je tvořen válcovým U profilem,
jehož vnější základna je upravena jako opěrná
dosedací plocha pro uvolňovaný kotouč
papíru, přičemž v bočnicích válcového U
profilu je otočně uložena hřídel, na kterou
jsou při pohledu z vnější strany bočnic pevně
nasunuta nosná kola tvaru hvězdic, a při
pohledu z vnitřní strany bočnic rohatky, do
kterých se opírají západky upravené na hlavici
ruční páky, která je kyvně nasunuta na
střední část hřídele mezi oběma rohatkami.
Vnější základna U profilu, která tvoří dosedací
plochu kotouče papíru, má podélný
sklon k rovině ložné plošiny v rozmezí 30
až 45°.
Patent CS-253072-B1 (CS)
Inventor: HAVRANEK KAREL
IPC: G03F7/00
Filed: 1984-11-19
Abstract: Podstatou řešení je přesné a praxí ověřené
množství alkalického hydroxidu sodného
v kombinaci s vodním sklem jako inhibitorem
rozrušení povrchu tiskové desky s tiskovým
obrazem a v kombinaci se silikonovou emulzí,
jako inhibitorem pěnivosti při použití vyvolávacího
roztoku ve vyvolávacím automatu.
Patent CS-233473-B1 (CS)
Inventor: NEUSCHL JOZEF
IPC: H02K5/04
Filed: 1982-12-10
Abstract: Očejom vynélezu je zvýílť hrůbku vrstvy
NbjSn e kritický prúd difúznych Nb^Sn supravodičov.
Uvedeného účelu sa dosiahne tým,
povrchovo- .oxidované podložka zo zliatiny
niobu a zirkonia sa po disocisčnom žíhaní
podrobí tepelnému spracovaniu, počas ktorého
sa vo vrstvě podložky presýtenej kyslíkom
vytvára, velké množstvo nových častíc suboxidu
niobu Nb^O. Tieto částice vytvárajú
nové vysokodifúzne dráhy, umožňujúce rýchléjžiu
difúziu cínu do podložky a tým aj
tvorbu hrubžích vrstiev Nb,Sn. Takto připravené
a cínom alebo zliatinou cínu pokovená
pódložke sa potom podrobí difúznemu žíhanlu.
Patent CS-233772-B1 (CS)
Inventor: KORDIK EUGEN
IPC: C05B11/06
Filed: 1982-12-20
Abstract: Cílem vynálezu bylo nalézt technologii
výroby koncentrovaného fosforečného '
hnojivá. Tohoto cíle se dosáhne tak, že
se kyselina fosforečné neutralizuje reakcí
s horečnatou surovinou, tj. oxidem či
hydroxidem hořečnatým, případně s některou
solí hořčíku se slabou kyselinou atd.
Neutralizace je vedena do pH 1,5 až 2,5,
měřeno skleněnou elektrodou po zředění
vodou 1:10.
Patent CS-261959-B1 (CS)
Inventor: VESELY FRANTISEK ING
IPC: G01F11/02
Filed: 1986-12-22
Abstract: Řešení se týká konstrukčního uspořádání
zařízení pro dávkování dvou- a vícesložkových
tmelů v průmyslové výrobě. Dávkovači
zařízení podle řešení sestává z nosného rámu,
v němž jsou umístěny ovládací a výkonné
prvky. Pohon zajišťuje elektromotor
s převodovkou, pohánějící přes řetězový
převod zubová čerpadla, zajišťující trvalý
oběh tmelu ze zásobníků vratným okruhem
zpět do horní části zásobníku složek nebo
do dávkovači a mísící hlavy zařízení. Trvalý
tok tmele zabezpečuje konstrukce dávkovacího
ventilu, vyznačujícího se malým zdvihem
řídicího pístu, spojeného přes pístnici
ovládačem, například pneumatickým válcem,
ovládaným rozváděčem řízeným elektronikou.
Poměr složek je závislý na počtu
zubů řetězových kol. Řešení lze s výhodou
použít ve všech oblastech, kde je třeba dávkovat
viskózní látky, např. v elektrotechnickém,
potravinářském, kartáčnickém průmyslu,
apod.
Patent DK-172883-B1 (DK)
Inventor: BOUILLON GUENTER
IPC: A61K8/37
Filed: 1990-04-30
Granted: 1999-09-06
Abstract: An anhydrous skin cleansing agent comprising a surfactant, organic solvent and water-insoluble abrasive as active components and a water-swellable organic polymer as a soil carrier and abrasive.
Patent DK-169441-B1 (DK)
Inventor: COUCHOUD JEAN-JACQUES
IPC: C08L77/02
Filed: 1986-12-29
Granted: 1994-10-31
Abstract: 1. Thermoplastic alloys consisting essentially of 30 to 94.8 parts by weight of polyamide, of 0.2 to 65 parts by weight of polyetheramide and of 5 to 50 parts of a thermoplastic elastomer, the sum of these three constituents having to be equal to 100.
Patent FI-103589-B1 (FI)
Inventor: RICHTER JOHAN C F C
IPC: D21C3/02
Filed: 1991-09-18
Granted: 1999-07-30
Abstract: A method of continuously digesting comminuted cellulosic fibrous material (e.g. wood chips) is provided which simultaneously improves uniformity of the end product and has substantial energy economy. The chips are slurried, e.g. with black liquor, and fed to the top of a vertical digester. In the digester the chips are soaked in and heated with black liquor withdrawn from near the bottom of the cooking zone, which black liquor is at cooking temperature. White liquor (kraft cooking liquor) introduced into the cooking zone is preheated by passing it in heat exchange relationship with a portion of the black liquor withdrawn from the digester, so that only a small amount of heat in the form of steam need be added to the white liquor to bring it to cooking temperature. At the top of the digester, a portion of the liquid in the slurry can be withdrawn through a screen, pressurized, and then introduced under pressure with a downward velocity component facilitating a zone of concurrent movement of the chips and liquor.
Patent FI-101299-B1 (FI)
Inventor: EMONDS-ALT XAVIER
IPC: C07D409/04
Filed: 1992-04-30
Granted: 1998-05-29
Abstract: The invention relates to compounds of formula (I): <IMAGE>  in which     - Y represents - either a Cy-N or Cy-CH2-N group in which Cy represents an optionally substituted phenyl;   - or a group <IMAGE> in which     .Ar represents an optionally substituted phenyl;   .x is zero or one; .X represents a hydrogen, a hydroxyl, an alkoxy; an acyloxy; a carboxy; a carbalkoxy; a cyano; a -N(X1)2 group in which the groups X1 independently represent hydrogen, an alkyl, a hydroxyalkyl, an acyl, or alternatively -(X1)2 constitutes, with the nitrogen atom to which it is attached, a heterocycle; an -S-X2 group in which X2 represents hydrogen or an alkyl group; or alternatively X forms, with the carbon atom to which it is attached and with the adjacent carbon atom in the heterocycle, a double bond;     - m is 2 or 3; - Ar' represents an optionally substituted phenyl or a phenyl substituted one or more times with a thienyl; a benzothienyl; a naphthyl or an indolyl;   - n is 0, 1, 2 or 3; - p is 1 or 2 and when p = 2, then n = 1 and Q represents two hydrogen atoms;   - Q represents oxygen or two hydrogen atoms;   - T represents a group chosen from <IMAGE>   - q is 0, 1, 2 or 3; - Z represents an optionally substituted phenyl; an optionally substituted naphthyl; a pyridyl; a thienyl; an indolyl; a quinolyl; a benzothienyl; an imidazolyl; or alternatively, when T is -C=O, -(CH2)q-Z may also represent a benzyl group substituted on the -CH- and optionally substituted on the aromatic ring; an optionally substituted mono-, di- or tricyclic aromatic or heteroaromatic group;   or one of their possible salts with inorganic or organic acids, or when <IMAGE> one of their quaternary ammonium salts with the nitrogen (b) of piperidine or N-oxide derivatives with the same nitrogen atom. The invention also relates to the process for preparing them and to their enantiomers. Application: antagonists of neurokinin receptors.
Patent FI-102097-B1 (FI)
Title: Construction unit made of wood
Inventor: VALKAMA EERO
IPC: E04F15/04
Filed: 1997-04-18
Granted: 1998-10-15
Abstract: The invention relates to a construction unit made of wood, which is preferably plate-shaped and consists of parallel interconnected pieces 1 which are essentially the same size in at least one direction and the sides of which have, for reinforcement of the construction unit, at least one groove 2 or the like, which extends in the region of adjacent pieces, for positioning a reinforcement member. According to the invention, the groove(s) 2 extend(s) extend around each piece. Each groove is filled with a setting compound containing reinforcement fibres to produce a reinforcement member. <IMAGE>
Patent FI-103386-B1 (FI)
Inventor: SUNDHOLM GOERAN
IPC: A62C35/68
Filed: 1998-06-02
Granted: 1999-06-30
Abstract: The invention relates to a sprinkler or a spray head comprising a housing (2), an inlet (3), a nozzle (4) mounted in the housing, a passage (17-18-13) from the inlet to the nozzle, and a holder (8) for a release means, the holder being mounted in front of the nozzle so that it prevents the nozzle from spraying extinguishing medium forward without hindrance, the nozzle being arranged to spray extinguishing medium once the release means has been released. The holder (8) is mounted in the housing (2) by means of a locking mechanism, which is arranged to open and release the holder (8) from the housing once the release means (7) has been released. To allow efficient and forceful spraying of the extinguishing medium without that the holder stands in the way, reducing the momentum and penetration force of the jet, and to safeguard the operation, the spinkler or spray head comprises a spindle (9) which is arranged to move in the housing (2) from a first position, in which the spindle is arranged to close the passage (17-18-13) to keep the nozzle (4) closed, to a second position, in which the spindle is arranged to open the passage to keep the nozzle open, when the release means is being released, the spindle being arranged to exert a force on the locking mechanism and to open the locking mechanism when the spindle is moved toward the holder (8) into the second position, whereby the nozzle (4) can forcefully spray the extinguishing medium forward essentially without hindrance.
Patent IE-36685-B1 (IE)
Title: L-tyrosine derivatives
IPC: C12N9/80
Filed: 1972-07-21
Abstract: A process for the preparation of a derivative of L-tyrosine of the formula WHEREIN R is hydrogen, hydroxyl or lower alkoxy, and R1 is hydroxyl or lower alkoxy, PROVIDED, HOWEVER, THAT AT LEAST ONE OF R and R1 is hydroxyl, which consists essentially of treating a derivative of DL-N-benzoyl-tyrosine of the formula WHEREIN R' is hydrogen, hydroxyl or lower alkoxy, and R1' is hydroxyl or lower alkoxy, WITH ANILINE OR A RING-SUBSTITUTED ANILINE IN A BUFFERED AQUEOUS SOLUTION HAVING A PH of about 5 to 7 and in the presence of a protease which is effective within this pH range to form a correspondingly substituted L-N-benzoyl-m- or p-tyrosyl-anilide, and hydrolyzing said tyrosylanilide with a mineral acid of suitable strength.
[US3855062A]
Patent IE-32347-B1 (IE)
Title: Pesticidal pyrimidine derivative
IPC: C07F9/6512
Filed: 1968-09-10
Abstract: [US3784546A]
Patent IE-49638-B1 (IE)
Title: Cylinder lock
IPC: D03D11/00
Filed: 1980-06-27
Abstract: A cylinder lock with a cylinder core rotatable in a housing, a side bar in a recess extending axially in a peripheral part of the cylinder core and biassed outwardly to engage a recess in the housing which is shaped to retract the side bar upon turning the cylinder core, the side bar having a number of lugs which must engage in waisted portions of locking pins of a row thereof guided in bores in the cylinder core to permit retraction of the side bar. The waisted portions of the pins are identically positioned with respect to ends thereof, and the lugs are differently positioned on the side bar, the side bar having guide portions which extend between the locking pins when the side bar is retracted and which engage guide surfaces to resist any tendency for the side bar to become misaligned or jammed.
Patent IE-63867-B1 (IE)
Title: Dispensing Measures
Inventor: GRIFFITHS RONALD
IPC: G01F11/32
Filed: 1987-06-09
Abstract: The present invention relates to dispensing measures and in particular to measures for use in dispensing drinks and other liquids which are of relatively high viscosity, such as cream based liqueurs. The dispensing measure has a measuring chamber (5) with an entry port (8) and an exit port (11), an internal operating standard (12) and a means (24) to move the internal operating standard (12) between a dispensing position in which it seals the entry port (8) and a resting position in which it seals the exit port (11). The dispensing measure is also provided with a nose (13) external to the measuring chamber (5), whereby the nose (13) guides fluid into a receptacle, held beneath the dispensing measure, when fluid is being dispensed thereform.
Patent IE-48812-B1 (IE)
Title: A ridge covering for a tiled roof
IPC: E04D1/34
Filed: 1979-08-24
Abstract: A ridge covering for a tiled pitched roof comprises ridge caps (16) fastened to a ridge batten (15). Sealing strips (33) of asphalt bonded asbestos are provided for sealing between the longitudinal edges of the ridgecaps (16) and the roof tiles (13). Each sealing strip (33) comprises two downwardly extending portions (35) which are shaped to conform to the contours of the roof tiles and a channel (34) between the two portions in which the edge of the ridge cap (16) sits. Ridge seal members (40) are provided to seal between adjacent ridge caps (16). The ridge seal members (40) are of inverted T section moulded from plastics material Fig. 3 (not shown). A sheet metal bracket (17) for securing the ridge batten (15) to the rafter (10) is also described, Fig. 2 (not shown).
Patent IE-54422-B1 (IE)
Title: Method and apparatus for sorting particulate material
IPC: B07B7/083
Filed: 1982-08-05
Abstract: © The invention relates to a method of sorting a particulate material into a coarse and fine fraction, in a separator having a rotationally symmetrical wall (10) and a vaned rotor (4) rotatable inside the wall (1) about the axis of symmetry. Material is suspended in a gas flow and is conveyed past the rotor (4), by means of which the coarser fraction of the material is flung outwards towards the wall, the inner fraction of the material remaining entrained in the conveying gas to be subsequently separated from the gas. To improve separation a band of clean gas is formed extending annularly around the suspension gas flow inside and along the wall of the separator.
Patent IE-38513-B1 (IE)
Title: New 2sz,ulsz-diamino-androstanes and their preparation
IPC: A61K31/58
Filed: 1973-11-15
Abstract: 1454749 2#,16#-Diamino-17-unsubstituted steroids AKZO NV 15 Nov 1973 [29 Nov 1972] 55191/72 Heading C2U Novel steroids of the formula wherein R 1 , R 2 , R 3 and R 4 are each H, C 1-10 alkyl or C 7-10 aralkyl, or -NR 1 R 2 and/or -NR 3 R 4 can represent a heterocyclic amino radical and X is H, OH or Oacyl and their acidaddition and quaternary ammonium salts are prepared (a) by reaction of corresponding 2#- NR 1 R 2 - 3α - hydroxy - 5α - androstan - 16- ones with NHR 3 R 4 in the presence of formic acid to give the required 3α-ols; or (b) by treatment of corresponding 3α-acyloxy-2#- NR 1 R 2 - 16# - N3R4 - 5α - androstan - 17# - ol 17-sulphonates, e.g. mesylates, under desulphonation conditions to give the corresponding #<SP>16</SP>-17-unsubstituted-steroids and then hydrogenating them to give the required 3α-acyloxysteroids; or (c) by reaction of 5α-androstane-2,16 dione with NHR 1 R 2 to give the required 3- unsubstituted steroids containing identical 2- and 16-substituents. The products may be salified or quaternated and in them a 3α-OH group may be acylated or eliminated e.g. by halogenation and reduction, and a 3α-acyloxy group may be hydrolysed. 2# - NR 1 R - 3α - hydrozy - 5α - androstan- 16 - ones are prepared (a) by epoxidizing 5α- androst - 2 - en - 16 - one to give 2α,3α- epoxy - 5α - androstan - 16 - one and then reacting this with NHR 1 R 2 ; or (b) by hydrolysing the #<SP>16</SP>-steroids referred to above or similar steroids containing a different 16#-amino group, the #<SP>16</SP>-steroids being prepared as described above. The novel steroids are neuromuscular blocking agents when in quaternary salt form and may be administered, for example, by intravenous injection.
[GB1454749A]
Patent IE-65300-B1 (IE)
Title: 2,4- and 2,5-substituted pyridine-N-oxides processes for their preparation and their use
Inventor: BAADER EKKEHARD
IPC: A61P7/02
Filed: 1991-06-27
Abstract: 2,4- and 2,5-substituted pyridine N-oxides which have fibrosuppressive and immunosuppressive activity are presented. The said compounds are likewise suitable for the treatment of disturbances of the metabolism of collagen and collagen-like substances and of the biosynthesis of C1q.
Patent IE-40538-B1 (IE)
Title: Production of n-phosphonomethyl glycine triesters
IPC: C25B3/23
Filed: 1974-11-06
Abstract: 1452644 Electrolytic preparation of N-phosphonomethylglycine esters MONSANTO CO 6 Nov 1974 [7 Nov 1973] 47915/74 Heading C2P [Also in Division C7] A triester of N-(phosphonomethyl)glycine is produced by subjecting a solution of a tetraester of N-(phosphonomethyl)iminodiacetic acid in an organic solvent containing an electrolyte to electric current, said solvent being one in which both the tetraester and the supporting electrolyte are soluble. Preferably, the electric current is a direct current the supporting electrolyte is a metal, ammonium or alkylammonium perchlorate, fluoroborate, acetate, ethylsulphate, toluenesulphonate or, especially, hexafluorophosphate. The solvent may be a nitro compound, a halogenated hydrocarbon, an ether or, especially, a nitrile and the electrodes used to produce the electric current may be made of lead, carbon, lead sulphate, a noble metal or a metal oxide. The products may be hydrolysed to give N-(phosphonomethyl)glycine, a herbicide.
[GB1452644A]