baber/WOPTO huggingface dataset:
Patent IE-41692-L (IE)
Title: Positioning device for use in wells.
IPC: E21B17/10
Filed: 1975-09-11
Abstract: 1478206 Wells &c WEATHERFORD OIL TOOL (UK) Ltd 12 Sept 1975 [12 Sept 1974] 39784/74 Heading E1F A hydraulic control line 10 (e.g. for actuating a sub-surface safety valve) is held in position in the space between a pipe string 4 and the well casing (not shown) by a device consisting of a body 1 which seats about the pipe string 4 and which includes a resiliently deformable portion having a recess 9, 11 which opens at the external face 12 of the body 1 and which receives the control line 10 by the resilient deformation of said portion. As described the body 1 is formed of a rubber-like material and is provided with ribs 5, each rib 5 having a bore 9 for receiving a control line 10 and which opens onto the outer face 12 of the rib 5 by means of a narrow passage 11. The control line 10 is forced into the bore 9 through the passage 11, chamfers 13 facilitating the entry of the control line 10. The bores 9 may all be of the same diameter, as shown, or may be of different diameters to accommodate control lines of different sizes. The body 1 may be formed in two parts 2, 3, the ends of each part 2, 3 being provided with fingers 6 which interleave with each other and which are joined together by passing a tapered pin 8 through slots 7 in the fingers 6. Alternatively the body may be formed by a single part having an opening which is fastened by the above described closing means. The body 1 may also be reinforced by a metal cage (not shown) and may be designed to encircle two or more pipe strings for use in multiple production wells.
[GB1478206A]
Patent IE-812011-L (IE)
Title: Process.
IPC: C07D237/12
Filed: 1981-09-01
Abstract: A process for preparing 3-chloro-6-(2-hydroxyphenyl)-pyridazines by the reaction of 6-(2-hydroxyphenyl)-3(2H)-pyridazinones with phosphorus oxychloride and a disubstituted formamide. The chloropyridazine compounds are useful intermediates for preparing compounds which have β-adrenergic blocking and vasodilator activity and are useful as antihypertensive agents:
Patent IE-832466-L (IE)
Title: Indoles and intermediates.
IPC: C07D209/42
Filed: 1983-10-20
Abstract: This invention relates to indole derivatives which have anti-cancer activity. According to the invention there is provided an indole derivative of the formula I :in which X is an oxygen or sulphur atom, Ra is a phenyl radical which is optionally substituted by one or two groups selected from halogen atoms and 1-6C alkyl, 1-6C alkoxy and trifluoromethyl radicals and Rb is a hydrogen atom or a 2-6C alkoxycarbonyl radical. Manufacturing processes and pharmaceutical compositions are also described.
Patent IE-832570-L (IE)
Title: Design of orthopaedic chairs
IPC: A47C31/12
Filed: 1983-11-02
Abstract: An apparatus for use in the design of ortopaedic chairs comprises a chair (2) and a contour measuring device (2a) mounted at the rear of the chair (2). The contour measuring device includes an elongate member (8) having a plurality of rods (9) slidably mounted therein, the rods (9) being mounted in parallel side-by-side relationship along the length of the elongate member (80) in a substantially common plane. In use, each rod (9) is slidable so as to enable the tip of one end of each rod (9) to engage the back of a patient sitting in the chair which tips thereby define a contour of the patient's back. A number of different contours along different vertical planes may be taken by adjusting the position of the elongate member (8) in the horizontal direction.
[EP0141652A1]
Patent IE-872603-L (IE)
Title: Method of inhibiting gene induction
IPC: A01C1/06
Filed: 1987-09-28
Abstract: A method of inhibiting the induction of expression of a structural gene or other protein coding gene or DNA segment under the control of a nod gene promoter with certain 7-oxy flavones, flavonols, flavanones or isoflavones.
[EP0263553A2]
Patent IE-833016-L (IE)
Title: Method of preparing compounds of silicon and hydrogen¹especially silane
IPC: C07F7/08
Filed: 1983-12-21
Abstract: 1. Process for the preparation of silicon hydride compounds, in particular of silane (SiH4 ) from halogen silanes, characterized in that halogen silanes, in particular tetrachlorosilane, are reacted with magnesium hydride in a solvent in the absence of additional catalysts and/or activators, which magnesium hydride is obtained by reacting magnesium with hydrogen in the presence of a catalyst consisting of a halide of a metal of sub-Groups IV to VIII of the periodic System and of an organic magnesium compound or of a magnesium hydride and optionally in the presence of a polycyclic aromatic compound or af a tertiary amine and optionally in the presence of a magnesium halide MgX2  where X = Cl, Br, l.
Patent IE-893985-L (IE)
Title: Packaged product
IPC: B65D81/26
Filed: 1989-12-13
Abstract: A packaged food composition which comprises a package containing a foodstuff and a desiccant.
Patent IE-950965-L (IE)
Title: Battery housing with integral latch and positive displacement apparatus
Inventor: GOODWIN ROSS P
IPC: H04B1/38
Filed: 1989-11-03
Abstract: A battery housing (105) with an integral latch (201) and a cantilevered spring finger positive displacement mechanism (320, 321) is disclosed. The slide-on battery is captivated by guide rails (307-312) on each side of the mating surface of the battery housing. When the battery is properly located, a torsion bar latch (201) locks the battery in place. When the latch is activated by the user to remove the battery, cantilevered spring fingers (320, 321) force the battery housing away from its locked position. <MATH>
Patent NO-793165-L (NO)
Inventor: KUEHLE ENGELBERT
IPC: B27K3/40
Filed: 1979-10-02
Abstract: N,N-dimethyl-N'-p-tolyl-N'-dichlorofluoromethylthio-sulphamide and its use as an anti-fungal agent especially in preventing fungi damage to wood.
Patent NO-811501-L (NO)
Title: Fremgangsmaate ved fremstilling av etendiaminderivater, samt mellomprodukter for disse
Inventor: TOSO ROBERTO
IPC: C07D307/52
Filed: 1981-05-04
Abstract: Fremgangsmåte ved fremstilling av forbindelser med for-,. mel (I):. 12 3 hvori R, R , R og R er like eller forskjellige og betyr hydrogen eller en lavere alkylgruppe med opptil 3 karbonatomer ved å omsette forbindelsene med form-Ipp (TT1 na lTTT). 3. hvori R, R , R og R har de ovenfor nevnte betydninger .Fremstilling av farmakologisk akseptable salter av forbindelser med formel (I) er også angitt.
Patent NO-820851-L (NO)
Inventor: BROCKMEYER JERRY W
IPC: B01D29/11
Filed: 1982-03-16
Abstract: A method for integrally bonding a gasket seal to the bevelled peripheral surface of a ceramic foam filter used in the filtration of molten metal.
Patent NO-821801-L (NO)
Title: Fremgangsmaate for fremstilling av metallisk nikkel
Inventor: KOSTIN VLADIMIR NIKOLAEVICH
IPC: C22B/
Filed: 1982-05-28
Abstract: Det angis en fremgangsmåte for fremstilling av metallisk nikkel fra et nlkkelholdig oksydmateriale ved at det til-veiebringes en plasmastråle ved å føre en reduserende gass gjennom sonen for elektrisk utladning. Materialet oppvarmes til nikkelets smeltetemperatur ved hjelp av plasmastrålen. Under oppvarmingen reduseres nikkeloksydene til metall og det dannes en smelte av metallisk nikkel. Smeiten vil også inneholde jern og kobolt siden jern-og koboltoksyder inneholdt i det nikkelholdige oksydmaterialet reduseres partielt. Reduksjonen av nikkeloksyder til metall gjennomføres i nærvær av en reduserende gass som mates inn i en mengde innen området fra 1,2 til 1,75 ganger den støkiometrisk-nødvendige reduserende mengde.I tillegg omfatter fremgangsmåten avsvovling av den resulterende smelte av metallisk nikkel og etterfølgende raffinering ved fjerning av gasser oppløst i smeiten og ufullstendig. reduserte jern og koboltoksyder.
Patent NO-823029-L (NO)
Inventor: GANSLANDT EUGEN CONRAD EMANUEL
IPC: C08J11/04
Filed: 1982-09-08
Abstract: Rubber crumb is subjected to direct reclaiming by being mixed with a plasticizer and optionally also a peptizer and, under agitation and supply of a gas atmosphere with controlled oxygen content and at a temperature of 130 DEG -200 DEG  C., heated at substantially atmospheric pressure to cause the rubber particles to react with oxygen and absorb </=10, preferably 0.5-5 liters of O2/kg of rubber particles.
Patent NO-843861-L (NO)
Inventor: HUTH ANDREAS
IPC: A61K31/44
Filed: 1984-09-26
Abstract: Novel substituted  beta -carboline derivatives of Formula I <IMAGE>  (I)  wherein R3 is an oxadiazolyl residue of the formula <IMAGE>   wherein R5 stands for lower alkyl of up to 3 carbon atoms or an ester   <IMAGE>   with R6 being hydrogen or lower alkyl of up to 3 carbon atoms, R4 is hydrogen, lower alkyl of up to 3 carbon atoms, or CH2OR9 wherein R9 is lower alkyl of up to 3 carbon atoms, RA is phenyl or a hydrocarbon residue containing 2-10 carbon atoms which can be cyclic or acyclic, saturated or unsaturated, branched or unbranched, and which can optionally be substituted by oxo, formyl OH, O-alkyl of up to 3 carbon atoms or phenyl, and wherein, in a cyclic hydrocarbon residue, a CH2-group can be replaced by oxygen, exhibit an effect on the central nervous system and thus are suitable as psychopharmaceuticals.
Patent NO-851886-L (NO)
Inventor: ALKER DAVID
IPC: C07C69/72
Filed: 1985-05-10
Abstract: Compounds of the formula:where R is an optionally substituted aryl or heteroaryl group;R<sup>1</sup> and R are each independently C<sub>1</sub>-C<sub>4</sub> alkyl or 2-methoxyethyl; and Y is -(CH<sub>2</sub>)<sub>n</sub>- where n is 2, 3 or 4, -CH<sub>2</sub>CH(CH<sub>3</sub>)-or -CH<sub>2</sub>C(CH<sub>3</sub>)<sub>2</sub>-; and their pharmaceutically acceptable salts.The compounds have utility as anti-ischaemic and antihypertensive agents and as synthetic intermediates to other dihydropyridine calcium antagonists.
Patent NO-854435-L (NO)
Inventor: YOSHINO HIROSHI
IPC: A61K38/08
Filed: 1985-11-07
Abstract: There is disclosed a novel polypeptide, a process for preparing the same, a pharmaceutical composition containing the same as well as the use thereof. The novel polypeptide which is useful as an analgesic corresponds to the formula given below: 
<CHEM>
 wherein the meaning of R<1> and R<2>, A, B, C, D, E, and F is the same defined in the claims.
Patent NO-872332-L (NO)
Inventor: THEN JOHANN
IPC: C12N15/00
Filed: 1987-06-03
Abstract: Prodn. of L-tert.-leucine (Ia) or L-phosphinothricin (Ib) is effected by tranamination of 3,3-dimethyl-2-oxobutyric acid (IIa) or (3-carboxy-3-oxopropyl)methylphosphinic acid (IIb), or their salts, with an amino acid (III) as amino gp. binder. Pref. the reaction is effected in the presence of a transaminase enzyme at pH 7-8.5 using a (III):(II) ratio of 1-5:1, esp. 1-2:1. The enzyme is used in pure form, in the form of a microorganism, or in the form of a cell extract or protein isolate derived from a microorganism. The microorganism is a Paracoccus, Alcaligenes, Pseudomonas, Serratia, Agrobacterium, Streptomyces or Enterbacterium strain, or a genetically manipulated microorganism, esp. E.coli ATCC 11303 transformed with a plasmid contg. a tyrB or 1lvE gene.
Patent NO-880673-L (NO)
Inventor: HELIOFF MICHAEL W
IPC: C07D207/26
Filed: 1988-02-16
Abstract: A composition comprising an aqueous preparation on the basis of keratin softening, which contains as a swelling and penetration agent, an N-alkyl pyrrolidone wherein the alkyl group contains between 8 and 22 carbon atoms.
Patent NO-885581-L (NO)
Title: System til forspenningsjustering av spindel-lager.
Inventor: YASCHERITSYN PETR IVANOVICH
IPC: B23B27/12
Filed: 1988-12-15
Abstract: Oppfinnelsen vedrører verktøymasklnlndustrlen og nærmere bestemt et splndellagers forspennlngs-justerlngssystem benyttet 1 verktøymaskiner.Det foreslåtte spindellagers-Justerlngssystem forbedrer kvaliteten på overflateflnlahen og øker skjærverktøyets holdbarhet. I samsvar med oppfinnelsen Innbefatter en mekanisme (10) for justering av forspenningen til trykklagrene (7 og 9) to koaksialt ordnede nyler (24 og 27), av hvilke den Innpassede hylse (24) har en ytre overflate anordnet med avsmalnende partier (25 og 26), og den påsatte hylse (27) har en Indre overflate anordnet med avsmalnende partier (28 og 29), og rullende elementer (30) er Innpasset mellom de avsmalnende partier (25 og 28,26 og 29) av hylsene (24 og 27), hvor hylsen (24) er glldbart montert på spindelen (24) og hylsen (27) er festet stasjonært Inne 1 et hus (1). Helnlngsvlnklene eller avsmalnlngsvlnk-elen (a) for hylsen (27) på siden mot det fremre trykklager (7) er mindre enn helningsvinkelen (ø) til hylsen (24), og helningsvinkelen (ø) for hylsen (27) på siden mot det bakre trykklager (9) er større enn helningsvinkelen (ol) for hylsen (24).
Patent NO-902804-L (NO)
Inventor: GLEIM GUENTER
IPC: G02B6/36
Filed: 1990-06-22
Abstract: PCT No. PCT/EP88/01142 Sec. 371 Date Nov. 22, 1991 Sec. 102(e) Date Nov. 22, 1991 PCT Filed Dec. 12, 1988 PCT Pub. No. WO89/06057 PCT Pub. Date Jun. 29, 1989.A connecting arrangement in which a connector and a mating element are connectable to a cable which has at least one electrically conducting core. This core is surrounded by a light-transmitting electrical insulating layer. The connector and mating element each have at least one electrical contact and one optical contact, through which the connector and the mating element are optically coupled for light transmission at a location where the insulating layer lies against the cable. The connector and mating element conduct both electrical and optical signals.
Patent NO-912711-L (NO)
Inventor: ABSIL ROBERT PETER LEONARD
IPC: C07C4/18
Filed: 1991-07-10
Abstract: A feedstock containing one or more C9+ aromatic compounds, and optionally toluene, is converted over a catalyst comprising a zeolite possessing a Constraint Index  of 1 to 3 to provide a product which contains substantial amounts of benzene and xylene(s).
Patent NO-921425-L (NO)
Inventor: BASIC SR JOHN N
IPC: F23M5/00
Filed: 1992-04-10
Abstract: An incinerator system for bulk refuse and hydrocarbon-containing liquids comprises an enclosed main chamber (32) having a fire-resistant floor means (33) for holding and burning material thereon; an inlet opening (231) for the introduction of solid bulk refuse; an outlet opening (67,68) for the egress of the gaseous products of combustion from said main chamber; a grate (436) located within said main chamber for holding refuse newly introduced through said inlet opening (231); and cooling means for reducing the temperature of said grate. The cooling means comprises primary passageways for receiving a flow of cooling fluid and nozzles for providing fluid communication between said passageways and said main chamber (32). The cooling means further comprises a further passageway isolated from said main chamber (32) so that cooling fluid flowing in said further passageway is prevented from entering said main chamber. Control means is provided for selectively permitting cooling fluid to flow through said primary passageways and then through said further passageway. <IMAGE>
Patent NO-921954-L (NO)
Title: Innretning for aa adskille fisk fra fiskeben etter filetering
Inventor: FRANCOIS JEAN-PIERRE
IPC: A22C/
Filed: 1992-05-18
Abstract: En maskin for fjerning av fiskekjbtt, spesielt hva som er igjen på benene etter filetering, fra benene, hvor maskinen omfatter to akslinger (4,4') som er bevegelige i forhold til hverandre og på hvilke det sitter hjul (9) med riflete over- flater som kar. dra et fiskeben. over skave jern (14,14'), som er frembragt til formålet og som skaver over sidebenene og mot de- dominerende ben langs over- og undersiden og til venstre og hcyre for det dominerende ben, og ved hvis hjelp det oppnås fiskekjott i form av strimler med den opprinnelige struktur.
Patent NO-923351-L (NO)
Title: Fremgangsmaate for fremstilling av et hydraulisk bindemiddel (ii)
Inventor: SCHWARZ WOLFGANG
IPC: C04B28/04
Filed: 1992-08-27
Abstract: En jernkompleksdannende, pH-nøy-tral til basisk forbindelse blir an-vendt som aktivator, spesielt for å forkorte bindetidene og for å øke tid-lig- og langtidsfasthetene, i et som tilsetningsmiddel oppløselig salt av det kullsyreholdige hydrauliske bindemiddel. Bindemidlets ferrittandel bør utgjøre minst 4 vekt%. Den jernkompleksdannende forbindelse skal tilblan-des bindemidlet i tørr tilstand. Et hydraulisk bindemiddel ifølge oppfin-nelsen inneholder fortrinnsvis minst 3 mmol% av en jernkompleksdannende forbindelse og en karbonatdonor i et mol-forhold mellom 0,3 og 4, basert på den jernkompleksdannende forbindelse.
Patent NO-934201-L (NO)
Title: Poly(vinylalkohol)-ko-(vinylamin))kopolymer som stabiliserende beskyttelseskolloider i vandig emulsjonspolymerisasjon
Inventor: BOTT RICHARD HENRY
IPC: C08F2/28
Filed: 1993-11-19
Abstract: Fremgangsmåte for fremstilling av vandige polymeremulsjoner i nærvær av en poly[(vinylalkohol)-ko-(vinyl-amin)] kopolymer som et beskyttende kolloid og vandige polymeremulsjoner inneholdene en poly[(vinylalkohol)-ko-(vinylamin)] kopolymer.
Patent NO-944224-L (NO)
Inventor: WOOD LOUIS L
IPC: C08G69/00
Filed: 1994-11-04
Abstract: Polyaspartate, useful for inhibition of incrustations due to materials causing hardness in water and of value in detergent formulations, can be prepared by reacting maleic acid or fumaric acid with ammonia in a molar ratio of 1:1-2.1 at temperatures greater than 170 DEG  C., followed by conversion of the polymer formed in this reaction to a salt of polyaspartic acid by basic hydrolysis.
Patent NO-944552-L (NO)
Inventor: VANDONINCK ALFONS
IPC: F41H9/06
Filed: 1994-11-28
Abstract: PCT No. PCT/BE94/00090 Sec. 371 Date Jul. 3, 1996 Sec. 102(e) Date Jul. 3, 1996 PCT Filed Nov. 24, 1994 PCT Pub. No. WO95/14981 PCT Pub. Date Jun. 1, 1995The invention relates to a device for generating a fog, characterized in that it comprises: a) a first closed vessel (1) kept at temperature and filled with a mixture having such a vapor pressure curve that pressure can be generated by varying the temperature of the mixture; b) a second closed vessel (2, 2', 2'') with a heat exchanger kept at a higher temperature; c) a pipe (7) with a valve (8) connecting the mixture from the first vessel to the second vessel (2, 2', 2''); d) an outlet (16, 16') in the wall of the second vessel (2, 2', 2'') for distributing the fog generated under pressure in this latter vessel into the environment.
Patent NO-951649-L (NO)
Inventor: ANTHONY NEVILLE J
IPC: A61K31/215
Filed: 1995-04-28
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Patent NO-954927-L (NO)
Title: Drivstoff for motorer med höy kompresjon og automatisk tenning
Inventor: SUNDERBRINK THOMAS
IPC: C10L1/02
Filed: 1995-12-05
Abstract: Det beskrives et drivstoff for motorer med høy kompresjon og automatisk tenning inneholdende for- estringsprodukter av fettsyrer fra natlve oljer og fett med C2~ til Cg-monoalkoholer og som er i det vesentlige fritt for lavere alkoholer samt native fett og oljer.
Patent NO-954997-L (NO)
Title: Injeksjonsspröyte
Inventor: HIGASHIKAWA TETSURO
IPC: A61M5/24
Filed: 1995-12-08
Abstract: Injeksjonssprøyte som er fylt med en sammensetning og omfatter en sylinder (21) som er åpen i begge ender og har en forbindelseskanal nær en av de åpne ender (44), en forskyvbar skilleplugg (26) som avgrenser flere kamre (28, 29) i sylinderen (21), en elastisk endeplugg (27) innført i en av de åpne ender (44) og med en kanal som kommuniserer med forbindelseskanalen, og en injeksjonsnål-tilkobling (30) beregnet til å monteres i en ende av endepluggen (27). Et forbindelsesparti er anordnet for kommunikasjon mellom et rundtgående spor i skillepluggen (26) i sylinderen (21) og et kjemikalium. Forøvrig omfatter konstruksjonen, anordnet på en fremre ende av sylinderen (21), som er av syntetisk harpiks, et festeparti for en injeksjonsnål (32) og en beskyttende ytre sylinder, av hvilken en ende er i ett med et endeforseglings- parti (31) som danner tetning for nålens festeparti. Endeforseglingspartiet (31) omfatter et hode og en vriplate. Sylinderen (21) er enhetlig dannet av en harpiks, og har et forbindelsesspor (24') i et fremre, tomt kammer (29), og dette sporet er en fortsettelse av nålens festeparti. En gass er innført i det fremre kammeret (29), som avgrenses av skillepluggen. Små vanndråper og bakterier hindres dermed i å komme inn i sylinderen (21).
Patent NO-961782-L (NO)
Title: Fremgangsmåte ved fremstilling av celluloseformlegemer
Inventor: RUF HARTMUT
IPC: D01F2/00
Filed: 1996-05-02
Abstract: Det er beskrevet en fremgangsmåte ved fremstilling av celluloseformelegemer, idet cellulose oppløses i en blanding av et tertiært aminoksyd og et ikke- oppløsningsmiddel for cellulose, f.eks. vann, idet oppløsningen ekstruderes gjennom et formningsverk- tøy, og de erholdte filamenter føres under uttrek- ning over en luftspalte inn i et utfellingsbad. Fremgangsmåten er særpreget ved at utfellingsbadet i det vesentlige består av et ikke-vandig oppløs- ningsmiddel for det tertiære aminoksyd, og hvor molekylvekten av det ikke-vandige oppløsningsmiddel er større en den for det tertiære aminoksyd. På denne måte kan det oppnås oppløsnings-spunnede fibre med liten fibrilleringstilbøyelighet. For- trinnsvis anvendes polyetylenglykoler.
Patent NO-963455-L (NO)
Inventor: ROUX JEAN
IPC: B63C7/20
Filed: 1996-08-20
Abstract: Deep-water wreck cargo recovery method using a heavy-duty pincer assembly (2) deployed from the drill string (3) of a dynamically positioned drill ship (1) and controlled via an underwater module (6) fitted with propulsion means, as well as a shock absorbing device (10) in the lower portion of the drill string. During the demolition stage, the pincer assembly rips open the wreck to provide access to the cargo. During the recovery stage, the pincer assembly is fitted with side walls and is used as a bucket. The method is particularly useful for recovering ores from modern ships and for recovering hazardous materials (e.g. radioactive materials).
Patent NO-963838-L (NO)
Inventor: ARTIEDA ANGEL ISO
IPC: B65D65/02
Filed: 1996-09-13
Abstract: Starting from the grouping of the sheaths (1) of artificial tripe or wrappers forming overlapping alignment with a quincuncial arrangement, so as to achieve a basically parallelepiped block, consisting of a transparent (2) cover that adapts itself to the previously mentioned block adopting a tubular configuration upon overlapping at two of its ends, defining a sealing line (4) located upon the middle line of the larger surfaces of the block, folding the ends of this tubular element so as to fit the ends of the sheaths (1) and configuring flaps (5-5') that fold down upon the same surface of the block on which the sealing line (4) is located, specifically upon the end areas of the previously mentioned line, stabilizing this transparent cover with the aid of an adhesive tape strip (6), that is placed covering the sealing line (4) and which seats at its ends upon the flaps (5-5'), being the adhesive tape (6) further fitted with an adhesive free section arranged so as to conform a manual grab tab designed to allow the package to be easily opened. The tape (6) extends at one of its ends by a substantial sector (8) that reaches the opposite surface of the block upon which an intermediate sector (8') is then defined, so that it stands apart from the block itself in order to configure a manual block grip handle. <IMAGE>
Patent NO-971084-L (NO)
Inventor: ZIMMERMANN CURT
IPC: C07C51/50
Filed: 1997-03-10
Abstract: Preparation of very pure calcium pyruvate (I) or its hydrate (IA) by reacting an aqueous solution of pyruvic acid (II) with an inorganic calcium compound (III) at pH 2-7, preferably 2.5-4. A 10% aqueous (II) solution is reacted with (III), optionally in the presence of a stabiliser or complex forming agent. The resultant solution is mixed with an organic diluent at 0-30 degrees C. The resultant precipitate of (I) or (IA) is isolated from the solution.