baber/WOPTO huggingface dataset:
Patent DK-248690-A (DK)
Inventor: STERNBERG NAT LEON
IPC: C12N1/21
Filed: 1990-10-15
Abstract: A P1 bacteriophage cloning system has been designed so that DNA fragments as large as 95 kb can be cloned and amplification of these fragments can be controlled. An in vitro P1 bacteriophage packaging process was developed. Novel vectors, novel lysogenic bacterial strains, and novel Cre<+> gram negative bacterial strains were engineered for use with this system.
Patent DK-301588-A (DK)
Inventor: GILL MICHAEL ALONZO
IPC: A61K39/215
Filed: 1988-06-02
Abstract: The present invention relates to a Canine Coronavirus (CCV) vaccine from a cell-associated peplomer antigen, processes for preparing such a vaccine, polyvalent vaccines consisting of the cell-associated CCV peplomer antigen in association with one or more additional pathogenic organisms or viruses, and to the use of the above-mentioned vaccines in prophylaxis of infection caused by CCV.
Patent DK-353882-A (DK)
Inventor: HUTTON T W
IPC: C08F12/26
Filed: 1982-08-06
Abstract: The quaternary ammonium monomers of this invention have the formula   <CHEM>  wherein  R is an ethylenically unsaturated organic group R<1> is a linear C1 to C4 alkyl group, optionally hydroxy substituted  X is chlorine, bromine or iodine, and  Y<(-)> is a surfactant anion. The epoxides derivable from the halohydrin of Formula (I) are other monomers of this invention. The monomers are soluble in common organic solvents and comonomers. The invention is also directed to addition polymers of these monomers and to methods or producing both the monomers and the colymers. The halohydrin monomers and the polymers are stable at acid pH values although capable of reacting with materials reactive with the hydroxyl and/or halide groups. Upon heating, they are self-reactive and can become cross-linked. At alkaline pH values they become self-reactive; the polymers crosslink slowly even at room temperature, with a crosslinking rate increasing rapidly with temperature. The monomers are particularly efficiently incorporated into copolymers. Polymers containing the novel monomers are useful as coating, binding or impregnating compositions.
Patent DK-361085-A (DK)
Inventor: KING MICHAEL JOHN
IPC: B29D30/54
Filed: 1985-08-08
Abstract: A device for use in vulcanizing a premolded, precured tyre tread (13) to a tyre carcass (12) in a tyre retreading operation, for sealing a retreading envelope against the tyre carcass in the bead area of the tyre. The device comprises a pair of rigid circular ring members each sized to fit against the exterior bead portion of the tyre casing, with the envelope interposed between the ring and the tyre casing. A series of interconnecting springs are attached to the rings at circumferentially spaced apart locations to hold them against the tyre in the bead area, and spacers attached to at least some of said springs maintain a uniform distance between the bead portions of the tyre casing. A compression member on an edge of each ring member provides increased sealing pressure against the envelope on the tyre.
Patent DK-364789-A (DK)
Inventor: PETER SIEGFRIED
IPC: C07C67/48
Filed: 1989-07-24
Abstract: A process for the preparation of monoglycerides and diglycerides from a mixture which contains mono-, di- and triglycerides by extraction with a supercritical extracting agent which includes special cosolvents is described. 
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Patent DK-371681-A (DK)
Inventor: ROUXHET P
IPC: C12N11/00
Filed: 1981-08-21
Abstract: 1. Process for immobilising globular microbial cells on a solid support, characterised in that, prior to the immobilisation, the cells or the solid support are treated so as to form a single layer of colloidal particles on the cells or solid support.
Patent DK-394885-A (DK)
Inventor: LOEBEL KLAUS-DIETER
IPC: A61K31/52
Filed: 1985-08-29
Abstract: An aqueous injection solution contains 1-25% by weight of 2-hydroxy-N,N,N-trimethyl-ethanaminium salt of 3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione (1:1) and, based on this salt, 5-8% by weight of propionic acid.
Patent DK-516987-A (DK)
Inventor: LEINEN HANS THEO
IPC: C07C231/02
Filed: 1987-10-01
Abstract: N-octyl salicylic acid amide and N-decyl salicylic acid amide, a process for their production from salicylic acid methyl ester and a primary amine, and use of the amides in antimicrobial compositions.
Patent DK-524680-A (DK)
Inventor: LOCATELLI J L
IPC: H01M50/143
Filed: 1980-12-09
Abstract: Shaped articles having improved mechanical strengths are comprised of (i) a nylon polyamide resin, (ii) a reinforcing amount of glass fibers therefor, and (iii) an impact strength increasing amount of a (meth)acrylic compound having the structural formula: [CH2=CR-CO-A]n X (I) wherein R is hydrogen or methyl, n is an integer equal to 2, 3 or 4, A is the linkage -O- or -NH- and X is an organic radical of valency n selected from the group consisting of linear or branched chain alkylene radical having from 1 to 20 carbon atoms, such alkylene radical comprising one or more chain-interrupting oxygen bridges and/or one or more hydroxyl groups, an aralkylene radical wherein the aryl moiety contains from 6 to 10 carbon atoms and the alkylene moiety is as defined above, such aralkylene radical comprising one or more alkylene chain-interrupting oxygen bridges, and a triazino heterocycle.
Patent DK-619384-A (DK)
Inventor: KIPP JR HEINRICH
IPC: G05G1/12
Filed: 1984-12-21
Abstract: A hand lever mechanism for turning fastening devices particularly for a spindle, axle or the like, wherein a fastening element made of hard material may be rotated by a hand lever made of material softer than the fastening element, with a coupling element affixed to the hand lever and adapted to engage the fastening element to connect the fastening element and the hand lever in rotative engagement being formed of a material harder than the material of the hand lever and being anchored or embedded in the material of the hand lever so as to be rotatable therewith.
Patent DK-652689-A (DK)
Inventor: KUEFNER-MUEHL ULRIKE
IPC: C07H19/04
Filed: 1989-12-21
Abstract: Xanthines of formula (I) and their optical isomers and acid-addn. salts are new: R1 = 1-6C alkyl, 3-4C alkenyl or 3-4C alkynyl; R2 = 1-6C alkyl, 3-4C alkenyl, 3-4C alkynyl or opt. substd. benzyl; R3 = (a) C-bonded satd. or unsatd. 5- to 7-membered heterocyclyl contg. one or more O and/or S atoms, opt. substd. by 1-6C alkyl, oxo, CHO, CH2OR4, CH2OR7, COOR4 or CONR5R6; where furyl and thienyl gps. are opt. also substd. and tetrahydrofuryl gps. are opt. also substd; (b) 4-8C cycloalkenyl opt. substd. by 2-4C alkenyl; (c) a 4-8C cycloalkanone or cycloalkanol gp. opt. alpha-substd. by 2-6C alkenyl, 2-6C alkynyl, opt. substd. benzyl, CH2OR4, CH2COOR7 or CH2CH2CN; (d) 3-8C cycloalkyl opt. substd. by 1-6C alkyl, =CH2, =NNHAr, =NNHR, =NOH, OCONHAr, OCONHR, OR4, OR7, (CH2)xCOOR4, (CH2)xNR4R4, (CH2)xCONR5R6, (CH2)xOR4, (CH2)xOR7 or =CHA; (e) 3-8C cycloalkyl gem-substd. by OH and 1-6C alkyl, vinyl, allyl or opt. substd. phenyl or (1-4C alkyl)phenyl; (f) 3-8C cycloalkyl gem-substd. by ORa and ORb, or (g) 3,4-methylenedioxyphenyl, 3,4-ethylenedioxyphenyl, 2-fluorenyl, 9-fluorenyl or a bicyclic gp., e.g. of formula (i)-(iii). Ar = opt. substd. aryl; R = 1-6C alkyl, x = 0-4; A = COOR4, CN, CONR5,R6, CH=CHCOOR4, CH=CHCONR5R6, CH2OR4 or CH2OR7; Ra and Rb = 1-4C alkyl, or Ra+Rb = 2-3C alkylene opt. substd. by 1 or 2 of 1-5C alkyl, 2-6C alkoxycarbonyl and 1-5C hydroxyalkyl; R4 = H, 1-13C alkyl, 3-13C alkenyl, propargyl, trityl or opt. substd. 3-6C cycloalkyl or benzyl; R5 = H, 1-6C alkyl or opt. substd. 3-6C cycloalkyl; R6 = H, 1-6C alkyl, opt. substd. benzyl, (CH2)nNR5R5, ((CH2)nO(CH2)mO)k(CH2)nNR5R5, (CH2)nQ(CH2)nNR5R5, or C-bonded piperidinyl opt. substd. ; or NR5R6 is a 5- to 7-membered ring opt. contg. another heteroatom and opt. substd. ; n = 2-8; m = 2-6; k = 0 or 1; Q = piperazine-1,4-diyl opt. substd. ; R7 = acyl derived from a natural amino acid, 2-14C alkanoyl, methyloxyacetyl, camphanoyl, abietoyl, 4-aminobutyryl, opt. substd. benzoyl or COB1; B1 = opt. substd.
Patent DK-655889-A (DK)
Inventor: BRIZZOLARA NANCY SUSAN
IPC: A61K9/22
Filed: 1989-12-21
Abstract: Oral compositions for the local administration of a therapeutic agent to a periodontal pocket of a patient for alleviating dental disease comprise a plurality of dry, discrete microparticles each of which comprise an effective amount of at least one therapeutic agent dispersed in a matrix comprising a biocompatible and biodegradable polymer. Apparatus and methods are also provided for the dispensing of the dry microparticles to the periodontal pocket whereby they become tacky and adhere to the involved tissue so as to induce long term therapeutic benefits.
Patent FI-773781-A (FI)
Inventor: WARBANOV RUMEN
IPC: B03D1/04
Filed: 1977-12-14
Abstract: The present invention provides a method of treating mineral raw materials by a foam flotation process wherein the raw materials are admitted into flotation cells with flotation reagents, and an intermittent pulsating supply of air is fed to said flotation cells.
Patent FI-792563-A (FI)
Inventor: BALLARD DENIS GEORGE HAROLD
IPC: C04B20/02
Filed: 1979-08-17
Abstract: A composition comprising vermiculite lamellae (delaminated vermiculite) and one or more solid particulate materials which have a basic reaction in water, especially magnesium oxide. These particulate additives improve the physical properties of vermiculite articles especially the compressive strength and stability to water of foam.
Patent FI-801564-A (FI)
Inventor: WENDEL KURT
IPC: C08L33/06
Filed: 1980-05-14
Abstract: 1. Binder mixture for paper-coating compositions based on aqueous dispersions of from 95 to 70 parts by weight of an emulsion polymer A, which contains acrylate and ethylenically unsaturated carboxylic acids as copolymerised units, and from 5 to 30 parts by weight of a copolymer B of from 15 to 55% by weight of acrylic acid and/or methacrylic acid, where appropriate up to 10% by weight of acrylamide and/or methacrylamide and from 85 to 45% by weight of other monomers which form water-insoluble homopolymers, at least 20% by weight of these hydrophobic monomers being esters of acrylic acid or methacrylic acid with alcohols which contain from 1 to 4 carbon atoms, wherein copolymer A contains, as copolymerised units, (a) from 80 to 96% by weight of esters of acrylic acid and monohydric C2 -C8 -alcohols, (b) up to 19.5% by weight of styrene, acrylonitrile and/or methylmethacrylate, and (c) from 0.5 to 10% by weight of other monomers which form water-soluble homopolymers.
Patent FI-834685-A (FI)
Inventor: SCHENKYR DIETER
IPC: H01Q1/52
Filed: 1983-12-20
Abstract: 1. A blocking device for surface waves for a symmetrical antenna working in the operational frequency range with a connection dipole (1) and, connected to this directly or via a symmetrization element (2), a coaxial cable (8) with an external insulation sheath, preferred use of said antenna being for television reception over the entire UHF range of 470 - 790 MHz, for said blocking device for surface waves the starting section of the coaxial cable on the antenna side being located with clearance by means of a metallic bracket and a section of the coaxial cable connected to the starting section immediately at the metallic bracket, is characterized in that the section of the coaxial cable (8) located immediately at the metallic bracket (3, 13) is encircled by a metallic clip (5, 12) and that the lengths of the starting section on the antenna side (11, 19) as well as that of the section of the coaxial cable (8) encircled by the metallic clip are in each case one quarter of a wavelength within the operational frequency range.
Patent FI-840131-A (FI)
Inventor: FRIESE HANS-HERBERT
IPC: C14C9/00
Filed: 1984-01-13
Abstract: This invention relates to a process for producing waterproof leathers and skins by tanning, retanning, dyeing, stuffing, and fixing which is characterized in that, after tanning and, optionally, dyeing, stuffing agents (A) in the form of oxidized or oxidized and partly sulfonated long-chain hydrocarbons of waxes and impregnating agents (B) in the form of copolymers or from 60 to 95 mol percent of (meth) acrylic acid and from 5 to 40 mol percent of an ester, amide or nitrile of (meth) acrylic acid having a molecular weight of from 800 to 10,000 in salt form are successively used in the same bath, followed by acidification, fixing and finishing. The co-use of the impregnating agents (B) with the particular stuffing agents (A) results in much greater degree of resistance to water penetration than that obtained by the use of the stuffing agent (A), alone.
Patent FI-864263-A (FI)
Inventor: HOFMANN RUEDIGER
IPC: H04Q3/52
Filed: 1986-10-21
Abstract: In a broad band signal spaced coupling device comprising a cross point matrix whose switching matrix elements are respectively controllable by a decoder-controlled, cross point-associated memory cell, the cross points are respectively formed with a complementary metal-oxide-semiconductor transfer gate and the useful signal input of each such gate is preceded by a complementary metal-oxide-semiconductor inverter.
Patent FI-865058-A (FI)
Inventor: BIERE HELMUT
IPC: C07D471/04
Filed: 1986-12-11
Abstract: 5- or 6-substituted  beta -carboline-3-carboxylic acid esters of the formula I <IMAGE>  in which R<1> denotes hydrogen, nitrilo, halogen, lower alkyl or lower alkoxy and R<3> is a branched C3-6-alkyl group which is optionally substituted by halogen or a C3-6-cycloalkyl group which is optionally methyl- substituted, are useful pharmaceuticals.r
Patent FI-874282-A (FI)
Inventor: LETEMPS BERNARD
IPC: C03B23/033
Filed: 1987-09-30
Abstract: A heated glass plate is bent by moving over a bed or rollers defining a path curved along the direction of movement of the glass plate so as to define an upwardly facing concavity. The glass plate moves with a speed of at least 10 cm/second and is curved by the bed without contact from above. The glass plate is subsequently tempered.
Patent FI-875775-A (FI)
Inventor: DEBRAS GUY L G
IPC: C10G45/62
Filed: 1987-12-30
Abstract: A process is disclosed for the selective hydrogenation of alkynes in hydrocarbon feeds, more specifically in 1,3-butadiene-rich C4 cuts, which consists of (i) passing said cuts at least partially in the liquid state over a palladium-based catalyst bed in the presence of hydrogen, preferably in trickle mode, so as to remove alkynes down to 300 - 400 ppmw, and (ii) passing the effluent from step (i) at least partially in the liquid state over a copper-based catalyst bed in the presence of hydrogen.
Patent FI-900152-A (FI)
Inventor: CURATOLO WILLIAM JOHN
IPC: A61K9/22
Filed: 1990-01-11
Abstract: This invention relates to devices useful for the controlled delivery of one or more beneficial agents to an environment of use. More specifically, this invention concerns such devices which are powered by lyotropic liquid crystals. This invention also relates to the controlled delivery of one or more beneficial agents to an aqueous environment of use through the use of such lyotropic liquid crystal powered dispensing devices. Also disclosed are methods for the controlled delivery of one or more beneficial agents to an aqueous environment of use which comprise administering to or otherwise placing the devices of this invention in the environment of use.
Patent FI-905883-A (FI)
Inventor: RANGANATHAN RAMACHANDRAN S
IPC: C07D223/10
Filed: 1990-11-29
Abstract: New nonionic radiographic contrast agents having the formula <CHEM>  wherein Y is a single bond -CH2CH2-, -CH2O-, -OCH2-, <CHEM>   R1 and R2 are the same or different and are <CHEM>   <CHEM> R3 and R4 are the same or different and are hydrogen, methyl or -CH2CH2OH; R5 is hydrogen, alkyl, -CH2CH2OH, CH2OH or OH and R6 is alkyl, -CH2CH2OH, CH2OH, OH or hydrogen and may be the same or different than R5 and m is zero or one with the proviso that no methylene or methine carbon atom of the heterocyclic ring is attached to both a nitrogen and an oxygen atom with the additional proviso that when Y is a single bond then m is not zero. These new contrast agents are water soluble and have desirable low osmolality properties.
Patent FI-913949-A (FI)
Inventor: RIESS WALTER
IPC: C07D489/04
Filed: 1991-08-21
Abstract: The invention relates to the codeine salt of [2-[(2,6-dichlorophenyl)-amino]-phenyl]-acetic acid of formula <IMAGE> (I)  to processes for the preparation thereof, to pharmaceutical compositions comprising that salt, and to its use as an analgesic drug. Compositions comprising the salt of formula I are used especially in the case of severe painful conditions.
Patent FI-915585-A (FI)
Inventor: AZIBERT HENRI V
IPC: F16J15/24
Filed: 1991-11-27
Abstract: A universal gland having a central opening for mounting coaxially about a machine shaft and adapted for mounting to a machine housing (55), through which the shaft extends, by a plurality of bolts (50) at bolt hole positions in the housing, characterized in that the gland comprises a gland body (12, 14) extending radially at the bolt hole positions a distance less than the minimum radial distance of the bolt hole positions from the axis of the shaft the gland further comprises a plurality of bolt mounting tabs (30) extending radially beyond the periphery of the gland body a distance at least to the bolt hole positions the tabs are angularly adjustable about the gland body; and the gland body comprises a mounting surface (16) for placement adjacent the housing and facing away from the mounting surface at least one tab engaging surface (25) engaged by the tabs for transferring forces from the bolts to the gland body is disclosed. <IMAGE>
Patent FI-915770-A (FI)
Inventor: SCHUBERT PAUL FREDERICK
IPC: C07C11/113
Filed: 1991-12-05
Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are extruded from a thick paste of potassium carbonate and water catalyst systems comprise at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises at least one promoter.
Patent FI-924010-A (FI)
Inventor: SUOMINEN JARI
IPC: A47F/
Filed: 1992-09-08
Abstract: This publication describes an adjustable shelf structure for a simply-assembled console shelf consisting of end parts 1, shelf surface and horizontal spars 6 which secure the end parts 1 in place. The shelf structure comprises at least two shelf parts 11, 14 whose edges are joined via hinges, four securing devices 9 with projections which are intended to grip the end profiles 2 of the end parts 1, the securing devices being arranged by rotatable coupling at the outer corners of the shelf parts. The projections on the securing parts 9 engage in holes in the horizontal spars, and the shelf surface can be set at the desired angle of inclination by means of the hinge coupling, thereby increasing the possible uses of the shelf structure. <IMAGE>
Patent FI-924258-A (FI)
Inventor: KLAGES UWE
IPC: C12R1/645
Filed: 1992-09-23
Abstract: A process for the production of dulcitol by fermentative reaction of lactose by galactokinase-negative mutants of genus Kluyveromyces is described, which is characterized in that 5 g to 25 g of glucose is added to the fermentation culture after substantial hydrolysis of the lactose per liter or the fermentation is performed under the conditions of the resting-cell process.
Patent FI-924340-A (FI)
Inventor: CHO YOUNG W
IPC: A61K9/107
Filed: 1992-09-28
Abstract: A Pharmaceutical formulation comprises a biologically active material such as insulin, erythropoietin, calcitonin and growth hormone, and, associated with it, a phospholipid for forming a material which participates in the alpha-glycerol or other pathways for the formation of lecithins which are found in the intestinal epithelial cell. Biologically active protein orally administered in such a formulation are bioavailable and bioactive.
Patent FI-931885-A (FI)
Inventor: MUELLER MANFRED
IPC: A44C27/00
Filed: 1993-04-27
Abstract: PCT No. PCT/EP91/01990 Sec. 371 Date Apr. 27, 1993 Sec. 102(e) Date Apr. 27, 1993 PCT Filed Oct. 19, 1991 PCT Pub. No. WO92/07484 PCT Pub. Date May 14, 1992.The process for producing locket-halves where a locket-half shell is formed from a first sheet, an annular groove is stamped into a second sheet, the external diameter of the groove being substantially the same as that of the locket-half shell. The portion of the sheet enclosed by the inner edge of the groove of the second sheet is removed to form a perforated plate, the locket-half shell is soldered to the perforated sheet, and the part of the second sheet extending beyond the outer edge of the groove of the sheet after the groove is stamped on is then separated.
Patent FI-942229-A (FI)
Inventor: BYSTROM STEVEN R
IPC: B05B11/04
Filed: 1994-05-13
Abstract: A fluid dispensing system for delivering sterile preservative free solution is disclosed. The system uses double self-sealing valves mounted in series inside a tip compartment which fits on the outlet of a multiple dosage squeeze container to prevent undesirable retrograde flow of the dispensed liquid back into the bottle during the decompression cycle. The valves used are positive acting, normally closed duckbill valves which open to express solution from the container when squeezing pressure is applied to the bottle and which automatically close when the pressure is released. A hydrophobic filter is provided to sterilize the replacement air which enters the container upon release of the squeezing pressure.
Patent FI-953199-A (FI)
Inventor: STIRNKORB WILLI
IPC: B65B55/02
Filed: 1995-06-28
Abstract: The packing machine (10) has a section (11) on which plastic packing tubes (23) are formed which are sealed at one end and filled using a filler tube (27). Before use the inside of the filler tube is sterilised with a medium which flows through the tube (27). The ends (29,30) of two filling tubes (27,28) of adjacent machines are interconnected by a tube (50) with two mouthpieces (51,52), which fit over the ends of the filler tubes, so that a flow path is provided for the sterilising medium. This medium flows from a tank (38) into one filler tube through the interconnection (50) to the other filler tube.
Patent FI-960160-A (FI)
Inventor: ALOUP JEAN-CLAUDE
IPC: A61K31/34
Filed: 1996-01-12
Abstract: Compounds of formula (I), wherein either R is C=R3, C(R4)R5 or CH-R6, R1 and R2 are hydrogen, halogen, alkyl, alkoxy, amino, acylamino, -NH-CO-NH-Ar, -N=CH-N(alk)alk', nitro, cyano, phenyl, imidazolyl or SO3H, R3 is oxygen, NOH, NO-alk-COOK or CH-R7, R4 is alkyl, -alk-Het or alk-Ar, R5 is alkyl, -alk-Het or -alk-Ar, or C(R4)R5 is cycloalkyl, R6 is hydroxy, alkyl, NR8R9, -alk-OH,-alk-NR8R9, -alk-Ar or -alk-Het, R7 is hydroxy, alkyl, phenyl, -alk-Ar, -alk-Het, NR10R11 or a heterocyclic ring, R8 and R9 are alkyl, or R8 is hydrogen and R9 is hydrogen or alkyl, -COR12, -CSR30 or -SO2R13, R10 and R11 are alkyl or cycloalkyl, R12 is alkyl, cycloalkyl, phenyl, -COO-alk, -CH2-COOX, -CH2-NH2, -NH-alk, -NH-Ar, -NH2 or -NH-Het, R13 is alkyl or phenyl, R30 is -NH-alk, -NH-Ar, -NH2 or -NH-Het; or R is a 2-imidazolylmethyl radical and each of R1 and R2 is a hydrogen atom. The compounds of formula (I) are  alpha -amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor antagonists, said receptor also being known as the quisqualate receptor. Furthermore, the compounds of formula (I) are non-competitive N-methyl-D-aspartate (NMDA) receptor antagonists, and especially NMDA receptor glycine modulation site ligands.
Patent FI-962891-A (FI)
Inventor: MATTES RALF
IPC: C12N9/90
Filed: 1996-07-18
Abstract: The invention relates to sucrose isomerases, to DNA sequences coding therefor, and to novel processes for the production of non-cariogenic sugars.
Patent FI-964816-A (FI)
Inventor: STANGER BERND
IPC: C08F6/00
Filed: 1996-12-02
Abstract: PCT No. PCT/EP95/00607 Sec. 371 Date Feb. 28, 1997 Sec. 102(e) Date Feb. 28, 1997 PCT Filed Feb. 22, 1995 PCT Pub. No. WO95/33775 PCT Pub. Date Dec. 14, 1995Described is a method of producing an aqueous polymer dispersion, the method calling for further polymerization of the dispersion using a radical mechanism redox initiator system including as the reducing agent the addition compound obtained between a lower ketone and hydrogen sulphite.