baber/WOPTO huggingface dataset:
Patent MD-1198-Z (MD)
Title: Device for grinding and aerodynamic drying of woody biomass
Inventor: HĂBĂŞESCU ION
IPC: B02C13/02
Filed: 2017-03-10
Abstract: The invention relates to woody biomass working devices and can be used in the chemical and woodworking industries.The device for grinding and aerodynamic drying of woody biomass comprises a frame (1), on which is rigidly fixed a body (2) with coarse grinding (4) and fine grinding (5) chambers. In the body (2) is placed an axle (8), on which are mounted two rotors (9, 10) with disks (11, 12 and 18, 19 respectively). In the front part of the device are made an opening, to which is fixed a hot air supply nozzle (23), and a charging opening (15) with countercuts (16). In the disk (11) of the rotor (9) are made holes for the passage of biomass and holes for the passage of hot air. On the perimeter of the inner surfaces of the chambers (4, 5) are fixed toothed plates (17, 22). On the periphery of the disks (11, 12 and 18, 19) are fixed toothed blades (13) and pins (20) with hammers (21). The chambers (4, 5) communicate between each other through a pipeline (24). At the exit from the chamber (5) are placed plates, the chamber (5) being equipped with a pipeline for removal of ground and dried biomass.
Patent ES-489259-A0 (ES)
IPC: A01N25/22
Filed: 1980-03-06
Abstract: A soil fumigant composition comprising dichloropropene, optionally together with one or more related chlorinated alkane/alkene components and/or more other nematicides, and, as a stabilizer therefor, at least 0.2 percent, by weight thereof, of a non-nucleophilic, oleophilic aliphatic epoxide, such as an epoxidised drying oil.
Patent ES-520136-A0 (ES)
IPC: C07D413/04
Filed: 1983-02-25
Abstract: A furyloxazolylacetic acid derivative of the formula:  <IMAGE> wherein R1 is alkyl of one to 6 carbon atoms, cycloalkyl of 5 to 6 carbon atoms, phenyl or a substituted phenyl (said substituted phenyl being phenyl group substituted with one or two radicals selected from alkyl of one to 2 carbon atoms, alkoxy of one to 2 carbon atoms and halogen), and R2 is hydrogen or alkyl of one to 12 carbon atoms. The compound (I) is useful as a hypolipidemic agent.
Patent ES-520486-A0 (ES)
IPC: A61K31/40
Filed: 1983-03-10
Abstract: The present invention provides bicyclic phenol ethers of the general formula:    <IMAGE>  (I)  wherein R1 is a hydrogen atom or a lower alkyl radical, R2 is a hydrogen atom or an acyl radical, X is an oxygen or sulphur atom or an -NH- group; Y is a -CO-CHR3- group or a <IMAGE>   group; R3 is a hydrogen atom, a lower alkyl radical which can be optionally substituted by an aryl radical, or a cycloalkyl radical containing 3 to 7 carbon atoms; and R4 and R5, which can be the same or different, are hydrogen atoms, lower alkyl radicals, lower alkyl radicals, alkenyl radicals containing 2 to 16 carbon atoms, which can be optionally substituted by an aryl radical, or an aryl radical; or R4 and R5, together with the carbon atom to which they are attached, form a cycloalkyl ring containing 3 to 7 carbon atoms; and the salts thereof with pharmacologically acceptable acids. The present invention also provides processes for the preparation of these compounds, as well as pharmaceutical compositions containing them.
Patent ES-526028-A0 (ES)
IPC: F16D65/56
Filed: 1983-09-28
Abstract: A predetermined clearance (A) between a disc (36) and a brake pad (34) in a disc brake calliper (10) is maintained by a selfadjusting device (24). A screw (48) is screwed into the block (26) and a spring sleeve (50) fits tightly in a bore (20) in the calliper and loosely around the screw shank but is trapped by the head (52) of the screw. In the state shown, the sleeve (50) abuts the block (26) but a small gap (A) exists between the sleeve (50) and the screw head (52), establishing the same clearance (A) between the pad (34) and disc (36). When the brake is applied the sleeve (20) is drawn out to the extent necessary to maintain the clearance (A) as the pad 34 wears. Embodiments are described with a return spring, e.g. a stack of Belleville washers, which acts between the sleeve (50) and the head (52) and is compressed solid when the brake is applied.
Patent ES-533609-A0 (ES)
IPC: C07D487/04
Filed: 1984-06-20
Abstract: 7-Piperidino-1,2,3,5-tetrahydroimidazo[2,1-b]-quinazolin-2-one having platelet aggregation inhibitory activity is disclosed. The compound has high water-solubility and reduced influences on the circulatory system.
Patent ES-534215-A0 (ES)
IPC: A61Q5/12
Filed: 1984-07-11
Abstract: A hair rinse composition having improved rinsing performance and a process specified to prepare the same.The composition according to the invention comprises (A) 0.05 to 0.5 wt% of cationic surface active agent, and (B) a 'higher alcohol or a glycerine mono fatty acid ester having a melting point not lower than 45°C. The ingredient (B) should be contained in an amount of 3 to 15 times by weight to ingredient (A).The composition is prepared by diluting a highly concentrated emulsified product containing 0.4 to 34 wt% of ingredient (A) and (B) in total with 1 to 20 times by weight to the emulsified product of water.
Patent ES-536100-A0 (ES)
IPC: B01D57/02
Filed: 1984-09-20
Abstract: 1. A process for the dehydration of a suspension of mineral pigments characterised in that the resistivity of said suspension is adjusted to a value of between 100 and 15 000 OMEGA cm and in particular between 500 and 5 000 OMEGA cm and sufficient to permit the deposit of pigment under the action of an electrical field, and then said suspension is subjected to the action of an electrical field.
Patent ES-551348-A0 (ES)
IPC: A23L33/00
Filed: 1986-01-28
Abstract: An improved enteral nutritional hypoallergenic formula is disclosed. The formula contains carbohydrates, lipids, protein hydrolysate, vitamins and minerals and a starch modified by octenyl succinic anhydride which is utilized as the sole lipid emulsifying agent to provide a nutritionally well-balanced dietary formula.
Patent FI-855102-A0 (FI)
Inventor: GRISS GERHART
IPC: C07D277/82
Filed: 1985-12-20
Abstract: This invention relates to new tetrahydrobenzthiazoles of general formula    <IMAGE>  (I)  wherein R1 represents a hydrogen atom, an alkyl group, an alkenyl or alkynyl group, an alkanoyl group, a phenyl alkyl or phenyl alkanoyl group, while the above mentioned phenyl nucleic may each be substituted by 1 or 2 halogen atoms, R2 represents a hydrogen atom or an alkyl group, R3 represents a hydrogen atom, an alkyl group a cycloalkyl group, an alkenyl or alkynyl group, an alkanoyl group, a phenyl alkyl or phenyl alkanoyl group, while the phenyl nucleus may be substituted by fluorine, chlorine or bromine atoms, R4 represents a hydrogen atom, an alkyl group, an alkyl or alkenyl group, or R3 and R4 together with the nitrogen atom between them represent a pyrrolidino, piperidino, hexamethyleneimino or morpholino group, the enantiomers and the acid addition salts thereof. The compounds of general formula I above in which one of the groups R1 or R3 or both groups R1 and R3 represent an acyl group are valuable intermediate products for preparing the other compounds of general formula I which have valuable pharmacological properties. The new compounds may be prepared using methods known per se.
Patent FI-891032-A0 (FI)
Inventor: AYDIN ORAL
IPC: C09K3/10
Filed: 1989-03-03
Abstract: Manufacture of sealings by means of a sealing mass based on a polymer dispersion and customary additives which as plasticiser contains a compound of the general formula I: <IMAGE>  where R = a radical of a 2- to 6-hydric alcohol of from 2 to 10 carbon atoms, attached by oxygen, R<1> = an alkyl, alkoxymethyl or alkenyloxymethyl radical or a mixture of these radicals, each having from 16 to 30 carbon atoms in the alkyl, alkoxy or alkenyloxy radical,  A = -CH2CH2-O- <IMAGE> -CH2CH2CH2CH2-O-, where at least 50 mol % of A is -CH2CH2O-,  x = 12 to 500,  y = an average of from 0.3 to 5, n = an integer from 2 to 6.p
Patent FI-902218-A0 (FI)
Inventor: HOLEVA KENNETH THOMAS
IPC: C08F20/02
Filed: 1990-05-03
Abstract: Disclosed are stabilizer compositions comprising specific mixed partial salts of a lower alkyl vinyl ether-maleic acid copolymer wherein said partial salts contain as the cationic salt function:  (a) from about 10% to about 65% zinc or strontium cations; and  (b) from about 10% to about 75% calcium cations of the total initial carboxyl groups reacted. Also disclosed are denture stabilizing compositions comprising these mixed partial salts, as well as denture stabilizing compositions comprising a safe and adhesively effective amount of two or more denture adhesive components wherein one of said denture adhesive components is the mixed partial salt(s) of the present invention.
Patent FI-902616-A0 (FI)
Inventor: BALLANCE JOHN WILLIAM
IPC: H04B10/035
Filed: 1990-05-25
Abstract: A central station (4) for a digital communications network comprising a plurality of outstations (8) and a branch network of waveguides comprising a single waveguide (6) from the central station, one or more passive splitters (1) and two or more secondary waveguides (14) for onward transmission to the outstations: the central station comprising; means for transmitting data to outstations in the form of a stream of frames, each comprising a synchronisation signal in the form of a predetermined pattern of bits; scrambling means for scrambling the frames in accordance with a predetermined binary sequence; and means for detecting in data received from the outstations the presence of the scrambled synchronisation signal thereby obtaining information concerning reflections in the branch network.
Patent FI-905769-A0 (FI)
Inventor: DUBROEUCQ MARIE-CHRISTINE
IPC: A61P37/06
Filed: 1990-11-22
Abstract: New isoindolone derivatives of general formula (I) in which the radicals R are hydrogen atoms or, together, form a bond, the symbols R' are phenyl radicals which may be substituted with a halogen atom or a methyl radical at position 2 or 3, X is an oxygen or sulphur atom or a radical N-R3, R3 being H, alkyl, optionally substituted, or dialkylamino, R1 is phenyl, optionally substituted, cyclohexadienyl, naphthyl or heterocyclic, R2 is H, halogen, OH, alkyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, alkyloxy, alkylthio, acyloxy, carboxy, alkyloxycarbonyl, optionally substituted, benzyloxycarbonyl, amino or acylamino, in their (3aR,7aR) forms or in the (3aRS,7aRS) form or mixtures thereof, where appropriate their salts where they exist and their preparation. 
<??>The new derivatives according to the invention are especially advantageous as substance P antagonists. 
<IMAGE>
Patent FI-913520-A0 (FI)
Inventor: TAN WILLIAM
IPC: H01Q/
Filed: 1991-07-23
Abstract: A reactance buffer (218) maintains a substantially constant resonant frequency for an adjustable size loop antenna (200) having first (202) and second (204) antenna segments. Each segment has first (206, 208) and second (212, 214) ends, the first ends (206, 208) being coupled to a receiver, and the second ends (212, 214) providing loop size adjustment. The reactance buffer (218) comprises a reactance buffer input (206) coupled to the second end of the first (202) antenna segment. A plurality of taps (T1-T7) are linearly disposed along an integrated structure, the structure presenting a substantially flat surface, and having a predetermined length between the outermost taps corresponding to the loop antenna size adjustment required. The taps (T1-T7) provide selectable reactance buffer outputs for coupling to the second end of the second (204) antenna segment. A plurality of reactance elements (302, ..., 320) couple the reactance buffer input (206) to each of the plurality of taps (T1-T7) and provide a substantially constant reactance measured between the reactance buffer input (206) and each of the plurality of taps (T1-T7).
Patent FI-952720-A0 (FI)
Inventor: HAMANN PHILIP ROSS
IPC: A61K47/48
Filed: 1995-06-02
Abstract: This invention describes carrier-drug conjugates prepared from disulfide analogs of the calicheamicin family of potent antitumor antibiotics and their derivatives, as well as similar analogs from related antitumor antibiotics such as the esperamicins. The carrier can be an antibody, growth factor, or steroid which targets an undesired population of cells, such as those of a tumor. Whole protein carriers as well as their antigen-recognizing fragments and their chemically or genetically manipulated counterparts are useful for the targeting portion of the conjugates. This invention includes compounds required for the synthesis of these conjugates, appropriate pharmaceutical compositions of the carrier-drug conjugates, and their method of use.
Patent IL-59453-A0 (IL)
Title: Therapeutic composition comprising isocyanurates
IPC: A61P35/00
Filed: 1980-02-22
Abstract: A therapeutic composition with cytostatic action comprising an isocyanurate having the formula I   <IMAGE> in which R, R', and R'' which may be the same or different represent hydrogen or alkyl having from 1 to 4 carbon atoms, preferably hydrogen or methyl in an inert pharmaceutically acceptable diluent, carrier or vehicle. The compositions may also contain other alkylating substances such as derivatives of nitrogen mustard or fluoruracil.
Patent IL-66579-A0 (IL)
Title: 1-phenylindazol-3-one-compounds,their preparation and pharmaceutical compositions containing them
IPC: A61P37/08
Filed: 1982-08-19
Abstract: Compounds corresponding to the formula:    <IMAGE>  II  wherein R1 and R3 each represent hydrogen, halogen, lower alkyl, lower alkoxy or trifluoromethyl; R2 and R4 each represent hydrogen, halogen, lower alkyl or lower alkoxy; Z represents an alkylene radical with 2 to 6 carbon atoms and Y'' is halogen, hydroxyl, lower alkanesulphonyl, benzenesulphonyl, or lower alkyl or halogen substituted benzenesulphonyl, and acid addition salts thereof, with the proviso the Y'' is other than chlorine if R1, R2, R3 and R4 each are hydrogen and Z is ethylene or propylene. The claimed compounds are useful intermediates in the synthesis of 1-phenyl-2-[(4-substituted piperazinyl) alkyl]-1,2-dihydro-3H-indazol-3-ones which exhibit antiallergic activity.
Patent IL-72776-A0 (IL)
Title: Pharmaceutical preparations containing flavene or thioflavene derivatives,the use thereof,novel flavenes and thioflavenes,and process for their manufacture
IPC: A61K31/382
Filed: 1984-08-27
Abstract: The invention relates to pharmaceutical preparations containing compound of Formula I <CHEM> in which X1 and X2, independently of each other, represent hydrogen, halogen, unsubstituted or substituted amino or a quaternary ammonium salt; etherified or esterified hydroxy; free, etherified, esterified or oxidized mercapto; nitro; functionally modified formyl; free or functionally modified carboxyl; acyl; an unsubstituted or substituted hydrocarbon radical, or an unsubstituted or substituted heterocyclic radical; with the proviso that at least one of the radicals X1 and X2 is bonded by a carbon atom to the ring system and with the proviso that X1 and X2 cannot be together halogen and formyl; in which Y represents oxygen, sulfur, sulfinyl or sulfonyl but must be sulfur, sulfinyl or sulfonyl, if X1 is hydrogen and X2 is formyl; and the rings A and B are each unsubstituted or substituted; or pharmaceutically acceptable salts of such compounds that contain a salt-forming group, and to novel compounds of Formula I. The compounds are useful e.g. for the treatment of diseases of the respiratory tract and of liver diseases. They are prepared by methods known per se.
Patent IL-76562-A0 (IL)
Title: Gonadal regulatory protein,method of the production thereof and antibodies thereof
IPC: A61K38/24
Filed: 1985-10-04
Abstract: A proteinaceous substance having a molecular weight of from 12,000 to 18,000, isoelectric points of 4.0 to 4.5 and 6.0 to 6.5, and having distinguishing elution profiles and electrophoretic patterns is shown to non-competitively inhibit aromatase activity, modulate 3 beta ol hydrogenase activity, and inhibit spermatogenesis and the formation of mature ova substantially independently of exogenous sex steroids.
Patent IL-76954-A0 (IL)
Title: Bacteriolytic enzyme product from streptomyces,a process for its preparation,and a strain suitable for this purpose
IPC: A23L3/34
Filed: 1985-11-05
Abstract: The strain Streptomyces coelicolor DSM 3030 excretes into the fermentation medium high yields of a bacteriolytic enzyme product which is very active against Gram-positive and Gram-negative bacteria. Preferred fermentation media contain sugar beet molasses and/or calcium ions.
Patent IL-87617-A0 (IL)
Title: Closures for containers
IPC: B29C45/44
Filed: 1988-08-31
Abstract: A container closure moulded from plastics material has a top 10, an internally screw-threaded skirt 11, and a tamper-evident ring 13 connected to the bottom edge of the skirt by frangible bridges 15. The radially inner surface of the ring 13 is formed with wedge-shaped inwardly projecting protrusions 16 for engaging under a security band on the neck of a container. An annular groove 20 is formed on the radially-outer surface of the ring at a location axially between the upper ends of the protrusions 16 and the bridges 15, and serves to form a hinge in an advantageous method of moulding the closure.
Patent IL-92317-A0 (IL)
Title: 2,4-dienamides and-thioamides,their preparation and their use as pesticides
IPC: C07D213/61
Filed: 1989-11-15
Abstract: 1) The present Application discloses pesticidally active compounds of the formula (I):  Q Q<1> CR<2> = CR<3> CR<4> = CR<5>C (=X) NHR<1> or a salt thereof, wherein Q is an monocyclic aromatic ring, or fused bicyclic ring system of which at least one ring is aromatic containing 9 or 10 atoms of which one may be nitrogen and the rest carbon each optionally substituted, or Q is a dihalovinyl group or a group R<6>-C IDENTICAL C- where R<6> is C1-4 alkyl, tri C1-4 alkylsilyl, halogen or hydrogen; Q<1> is a 1,2-cyclopropyl ring optionally substituted by one or more groups selected from C1-3 alkyl, halo, C1-3 haloalkyl, alkynyl, or cyano; R<2>,R<3>, R<4> and R<5> are the same or different with at least one being hydrogen and the others being independently selected from hydrogen, halo, C1-4 alkyl or C1-4 haloalkyl; X is oxygen or sulphur; and R<1> is selected from hydrogen and C1-8 hydrocarbyl optionally substituted by dioxalanyl, halo, cyano, trifuoromethyl, trifluoromethylthio or C1-6 alkoxy, their preparation, pesticidal compositions containing them and their use against pests.
Patent IL-92632-A0 (IL)
Title: Substituted 2-pyridones and pyrid-2-thiones,their preparation and pharmaceutical compositions containing them
IPC: C07F7/18
Filed: 1989-12-11
Abstract: For inhibiting HMG-CoA reductase and cholesterol synthesis, the novel 2-pyridones and pyrid-2-thiones of the formula  <IMAGE>  in which A is optionally substituted aryl or heterocyclic, B is optionally substituted alkyl, cycloalkyl or aryl, D and E independently are optionally substituted aryl or heterocyclic, H, nitro, cyano, optionally substituted alkyl, alkenyl or imino, amino, alkoxy or acyl, or forms a ring with B, G is O or S, X is -CH2-CH2- or -CH=CH-, and R represents a group of the formula  <IMAGE>  and salts thereof.
Patent IL-97144-A0 (IL)
Title: Substituted 1-(alkoxy-iminoalkyl)imidazole derivatives,their preparation and pharmaceutical compositions containing them
IPC: A61P15/00
Filed: 1991-02-04
Abstract: PCT No. PCT/EP91/00351 Sec. 371 Date Oct. 25, 1991 Sec. 102(e) Date Oct. 25, 1991 PCT Filed Feb. 26, 1991 PCT Pub. No. WO91/13062 PCT Pub. Date Sep. 5, 1991.1-(Alkoxy-iminoalkyl)imidazole derivatives of formula  (* CHEMICAL STRUCTURE *) (I) wherein R is hydrogen or C1-C4 alkyl; A is C1-C4 alkylene optionally substituted by phenyl optionally substituted by halogen or trifluoromethyl; R is (a) hydrogen or a C1-C10 hydrocarbon radical; (b) an aryl or aryl-C1-C4 alkyl group wherein the said aryl is optionally substituted either by halogen, trihalo-methyl, C1-C4 alkyl, C2-C3 alkenyl, C2-C6 alkynyl, C1-C4 alkoxy, C1-C4 alkylthio or C1-C4 alkylsulfonyl or by C5-C8 alkyl, C4-C8 alkenyl, C5-C8 alkoxy, C5-C8 alkylthio or phenyl optionally substituted by halogen, trihalomethyl or C1-C4 alkyl; or (c) a C5-C8 cycloalkyl or C5-C8 cycloalkyl-C1-C4 alkyl group, wherein the said cycloalkyl is optionally substituted by C1-C4 alkyl; T is a C1-C6 hydrocarbon chain or phenylene; X is a bond, -O-CH2-, -C(R' R")-, Si(R' R")-, vinylene or isopropenylene, each R' and R" being hydrogen, fluorine or C1-C4 alkyl; and R2 is -OR3 or -N(R3R4), each R3 and R4 being hydrogen, C1-C6 alkyl, phenyl or benzyl; and the pharmaceutically acceptable salts thereof; are useful in the treatment of a disease state related to enhancement of thromboxane A2 (TxA2) synthesis.
Patent IL-99952-A0 (IL)
Title: Retroviral protease inhibiting compounds
IPC: C07D405/12
Filed: 1991-11-04
Abstract: An intermediate of the formula: <CHEM>  and  an intermediate of the formula: <CHEM> or an acid addition salt thereof.M
Patent SE-8305731-A0 (SE)
Title: Lastpall
Inventor: OHLSSON ANDERS
IPC: B65D19/40
Filed: 1983-10-19
Abstract: En lastpall med lag egenvikt, hog belastningsfOrmaga och med laga tiliverkningskostnader bestaende av en pallplatta (1) av tvarwellit (23) eller liknande material, omgivet av en kantlist (2) fOrsedd med tvarlister(4-6, 26) och pa over- och undersidan tackt med fastlimmade skivor (8) av t ex kartong. Pallplattan (1) ar forsedd med.fotter(9,18, 31) som skruvats fast pA pallplattan och kan vara forsedd med medar (16,32). •• • O• 0• • II 4 e••• • • a. •1 •• •• • • • 4 •• •••• • ••• • • ••• •••• • • • ••• • S• It• * • •••• •••• • ••• • a• .000 0 • • • *0 • .16e1410 •• • ••• Pe ... • • • v 0.1.0 ••0• 4. . MO..44454 4 .4i .14 $*•• • •••••:. : • • • : • of dt*S: ..0' :mad. 'OA' rr) - L4. • IA.*, • • • • * a • a C \ I at •• a ra .tx91.••• ••• ••• •• • •0 I • • •••• ••• ••• • a a:••••• ■• • •V•• •• • ••••t•v••• veg. ••■•• •••••• • • Pe • 110•• • •• IA g • •• • • • • • • 11• •• • •0011 • 11, • • *of . - • ■, —-..•••«weir *5. .••.. a 4. ••••• ••• foal ••• •• S • a • • 0• ••• • •• Il•• • •• • • * • •• • * •0 • • • ••• • 4. 411 • • • • • SI • 4 11.4141 • 4 . • 0 110 • MI! • 0 • 44 441 • • 4 Se 0 a a • • 4.4. 4640 • a WO* •• at 4 4 • fre *SS4 9S 4 IsI :ior I.tit.*t■S 448 i88 45* 4. I6. 0tit. 840,44 414t1 4.74 -.4ate., • • 410 • • • * 4.0041 *-4, ;”. :* 4 •5••••* • •* •••5 5• . • ip .•a • •• r 6 • • •• *5.•*• 551. * I.*5. •5 S. * • • • ; *• Se*• • • • • • • • • • ••• *5 1---IG. 76 • m• .•••• • • w••• •• •• • .• .••• I 0 , ••
Patent SE-8901433-A0 (SE)
Title: Kontroll och styrning av brunnflöde och brunntryck
Inventor: LARSEN H
IPC: E21B43/12
Filed: 1989-04-20
Abstract: FOrfarande for kontroll och styrning av brunnflode (QpA QpN) och brunntryck (PpA 460 PpN)fOr brunnar (WA ... WN) horande till ett oljefalt med pa havsbotten forlagd produktionsutrustning for olja och gas. Forfar- andet forutsatter att varje brunn fOrses med en pump (WPA WPN) med hydrauliskt drivna kolvar och roterande trumma. Varje brunns produktionstryck och flOde kan utvarderas med hjAlp av tryck- och flbdesmatningar ovan havsytan och styrning kan ske via trumrotation och drivflode. Brunnarna kan kontrolleras och styras separat eller via en Overordnad styrning for uppnaende av en for hela faltet optimal produktionsprofil. (Fig 2)
Patent SE-9500927-A0 (SE)
Title: Förfarande för tcf- eller efc-blekning av massa
Inventor: KAJ HENRICSON
IPC: D21C9/02
Filed: 1995-03-16
Abstract: SAMMANDRAG Cellulosamassa, speciellt kemisk sulfatmassa av mediumkonsistens (dvs. 5 -25 %), kokat till ett lagt kappatal (25 eller mindre on ett syrebleksteg anvandes, eller 12 eller mindre om ej) utsatts for olika TCFblekningssekvenser. Massan behandlas i ett surt steg vid ett pH av 2 - 7 (fOretradesvis ca 2 - 5) under en tidsperiod (10 sekunder till flera timmar) som ar tillracklig for att sakerstalla att sjalva massafibrerna ar vid det onskade pH-vardet. Darefter tvattas (t.ex. en fraktionerande tvattning) massan eller urpressas. Massan utsatts for en flerstegsblekningssekvens innehallande atminstone ett peroxidsteg efter tvattningen eller urpressningen (t.ex. ett Op-, Po- eller Pa- (sasom ett PaQ/A-) steg). Temperaturen under varje steg av blekningssekvensen ar 80 - 120°C s& att energi inbesparas och utrustningen minimeras.