EP1090185B1 - Verfahren zur ausflockung bei der herstellung einer papierbahn - Google Patents

Verfahren zur ausflockung bei der herstellung einer papierbahn Download PDF

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EP1090185B1
EP1090185B1 EP99920905A EP99920905A EP1090185B1 EP 1090185 B1 EP1090185 B1 EP 1090185B1 EP 99920905 A EP99920905 A EP 99920905A EP 99920905 A EP99920905 A EP 99920905A EP 1090185 B1 EP1090185 B1 EP 1090185B1
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Prior art keywords
paper
sheet
paperboard
cross
manufacturing
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English (en)
French (fr)
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EP1090185A1 (de
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René Hund
Christian Snf S.A. Jehn-Rendu
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SNF SA
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SNF SA
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
    • D21H17/43—Carboxyl groups or derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised

Definitions

  • the present invention relates to the field of polymers synthetics obtained from water-soluble monomers, or mixtures of such monomers, and their application specific to the manufacture of a sheet of paper, cardboard or similar.
  • European patent EP 0 201 237 describes a method of flocculation in which a polymeric material is added to water to form an aqueous composition, and is used to flocculate the solid matter in suspension in an aqueous suspension, said polymer consisting of a high weight polymer molecular, which is subjected to a shear, this shear being carried out before or during flocculation and the polymer in front meet certain intrinsic properties which are indicated in this patent.
  • the polymer is a high polymer molecular weight, formed from monomers soluble in water or a mixture of such monomers, and the shear polymer.
  • the process described in this patent is characterized in that the front shearing or during flocculation.
  • Patent EP 0 201 237 also indicates that the polymer used includes a water swellable crosslinked polymer that it is possible to shear up to an intrinsic viscosity of at least minus 4 dl / g. It is also indicated that the aqueous composition containing the polymeric material can be a stable composition and homogeneous, the shearing then causing an increase in the intrinsic viscosity of at least 1 dl / g.
  • stable and homogeneous designates a polymer composition which is stable when the polymer finds complete equilibrium with water, i.e. it has reached its ultimate degree of dissolution or swelling.
  • the composition is also homogeneous in the sense that the polymer remains uniformly dispersed throughout the composition, without having tendency to precipitate after a few days.
  • the document also states that the shear on the production line, when the suspension at flocculate approach of a centrifuge, a filter press, or a belt press, or other water removal step. It is again note that shear can be applied during a step elimination of the water which is conducted under a certain shear, preferably in a centrifuge or in a filter press or in a belt press.
  • the present invention relates to a significant improvement in this process and corresponding flocculating agents, with surprising advantages in the specific application for the manufacture of a sheet of paper, cardboard or the like, and operating under specific conditions which will be described below.
  • the monomers can be non-ionic, but generally at least part of the monomers used for forming the polymer is ionic.
  • the monomers are usually monoethylenically unsaturated monomers, sometimes allylic monomers, but generally vinyl monomers. These are usually monomers acrylic or metacrylic.
  • Suitable nonionic monomers are acrylamide, methacrylamide, N-vinylmethylacetamide or N-vinylformamide, vinyl acetate, vinylpyrrolidone, methyl methacrylate or other acrylic esters, or other ethylenically unsaturated esters, or other monomers vinyl insoluble in water such as styrene or acrylonitrile.
  • Suitable anionic monomers are for example sodium acrylate, sodium methacrylate, itaconate sodium, 2-acrylamido 2-methylpropane sulfonate (AMPS), sulfopropylacrylates or sulfopropylmethacrylates, or others water-soluble forms of these sulfonic acids or polymerizable carboxyls.
  • AMPS 2-acrylamido 2-methylpropane sulfonate
  • sulfopropylacrylates or sulfopropylmethacrylates or others water-soluble forms of these sulfonic acids or polymerizable carboxyls.
  • Suitable cationic monomers are dialkylaminoalkyl acrylates and methacrylates, in particular dialkylaminoethyl acrylate, as well as their salts acidified or quaternized by means known to those skilled in the art, such as benzyl chloride, methyl chloride, aryl, alkyl chlorides, dimethylsulfate, and also dialkylaminoalkylalkylacrylamides or -methacrylamides, as well as their acidified or quaternized salts in a known manner, for example methacrylamido-propyl trimethyl ammonium chloride (MAPTAC).
  • the alkyl groups in question are generally C 1 -C 4 alkyl groups.
  • the monomers can contain hydrophobic groups, as for example described in patent EP 0 172 723, and may in certain cases prefer allyl ether monomers.
  • Crosslinking can be done during or after the polymerization, for example by reaction of two polymers soluble with counter ions, or by reaction on formaldehyde or a versatile metal compound. Often the crosslinking takes place during polymerization by the addition of a crosslinking agent, and this solution will be much preferred according to the invention. These crosslinking polymerization processes are known.
  • Cross-linking agents which can be incorporated include ionic cross-linking agents such as salts of polyvalent metal, formaldehyde, glyoxal, or even, and preferably covalent crosslinking agents which will copolymerize with the monomers, preferably monomers diethylenically unsaturated (like the ester family of diacrylates such as polyethylene glycols PEG diacrylates) or polyethylene, of the type conventionally used for the crosslinking of water-soluble polymers, and in particular methylenebisacrylamide (MBA) or any of the other known acrylic crosslinking agents.
  • ionic cross-linking agents such as salts of polyvalent metal, formaldehyde, glyoxal, or even
  • covalent crosslinking agents which will copolymerize with the monomers, preferably monomers diethylenically unsaturated (like the ester family of diacrylates such as polyethylene glycols PEG diacrylates) or polyethylene, of the type conventionally used for the crosslinking of
  • the amount of crosslinking agents, and in particular of methylenebisacrylamide (MBA) which can be incorporated according to the invention is generally of the order of 5 to 100, preferably 5 at 40, and according to the best mode, around 20 ppm of crosslinking / active material (polymer).
  • the polymers which can be used according to the invention can be prepared by an aqueous solution polymerization method at low concentration, but the invention relates above all to a reverse phase emulsion polymerization, i.e. water-in-oil emulsion polymerization.
  • the “dual” systems of the prior art were composed essentially of linear polymers with the addition of bentonite, or a branched polyacrylamide or starch, with addition of colloidal silica, the latter component being extremely expensive.
  • an agent is used single retention, preferably in reverse water-in-oil emulsion, crosslinked, sheared before injection, and which leads directly to microflocs without going through the shearing of flocs more important and involving the fibrous mass.
  • the Applicant considers that it is product, as a result of the strong shear carried out on the polymer itself before its injection into the fibrous mass of dough, microflocculation directly, which is therefore a process different (and unexpected) from reducing the size of large flocs (and involving the fibrous mass) in smaller and larger flocs robust, and which leads to unplanned improvements in properties of the sheet of paper or cardboard.
  • microflocculation also avoids according to the invention the presence of bentonite or another second “dual” agent of retention.
  • Reverse emulsion polymerization is very well known of the skilled person.
  • Injection or introduction of the crosslinked polymer, and previously sheared according to the invention, is carried out in the dough paper (or fibrous mass to be flocculated) more or less diluted depending on the skilled in the art, and generally in dough diluted paper or “thin stock”, ie a pulp diluted to approximately 0.7% - 1.5% solids such as cellulose fibers, any charges, various additives customary in the manufacture of paper.
  • an emulsion may be used reverse of the polymer or the powder obtained from the emulsion by a known drying technique, such as by example by spray drying or “spray-drying”, solvent precipitation or agglomeration (PEG) and grinding (cf.
  • the dried product substantially comprises, according to the invention, as the emulsion, and this variant therefore provides a solution for using products dry with the benefits of an emulsion, which it is not always possible to prepare by direct polymerization in aqueous phase in gel or in solution.
  • the emulsion will preferably be used reverse of the crosslinked polymer, or else the crosslinked polymer in solution as obtained by redissolving a powder, as described above, with of course shearing prior to injection in the dough.
  • tests of laboratory shear at a concentration of the order of 3 - 5 to 10 - 15 g of active ingredient (ie the polymer) / liter, preferably between 5 and 10 g / l, in a material called Ultra Turrax, by example at 10,000 rpm or in a household mixer of the type Moulinex, roughly the same order of magnitude of speed of rotation, for a period between 15 - 30 seconds and 2 - 5 minutes.
  • a normal dosage of the agent according to the invention will be such that it leads to approximately 100 to 500 g of active material (polymer) per ton of fibrous material to be treated.
  • an ionic boost (IR as defined in the EP 0 201 237) from 40 to 50 or up to at least 60 or 70% or more, up to or above values greater than 100.
  • system according to the invention is not expensive, and it therefore combines all the advantages of the systems unique linear or crosslinked products with flock shear and “dual” systems with two retention agents and also with shearing of flocs.
  • Example 1, 2 or 3 The manufacturing examples of the polymer are followed by a Table (“example 1, 2 or 3”) indicating the characteristics of the polymer obtained, by a Table (numbered N ° 1, N ° 2 and N ° 3 with the reference of the produced in the preceding tables) in two parts indicating on the one hand the conditions of application test, in particular the conditions of shearing before mixing with the paste, and on the other hand the results of retention, draining and formation , and other similar characteristics.
  • the histograms relating to the turbidity measurements of the water under canvas show that the turbidity is divided by a factor of three according to the invention, (Fig. 3-5). Total retention follows the same trend and therefore calls for the same comments.
  • SD 448 B is 448 B which has been spray dried drying or spray drying, then dissolving the powder white obtained, shearing of the solution at approximately 5 - 10 g / l polymer and then used as emulsion 448 B.
  • the paste used is diluted to a consistency of 1.5%. 2.24 g dry paste is taken, ie 149 g 15% paste and then diluted to 0.4% with clear water.
  • G grammage ex.
  • G80 grammage of 80 g
  • the invention provides an important additional advantage with regard to a very marked improvement in the formation of the sheet.
  • the formation designates as is known qualities of the sheet such as homogeneity, and the like. This advantage, which is added to the two preceding ones, is attributable to the microflocculation caused by the agents sheared according to the invention.
  • Example 2 The same polymeric agent as in Example 2 is used but at a different dosage (0.1% of polymer relative to the mass fibrous to flocculate).

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  • Paper (AREA)

Claims (21)

  1. Verfahren zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, das dazu bestimmt ist, die Retention, das Faserbild, das Abtropfverhalten und weitere Eigenschaften des so erhaltenen Papier- oder Pappebogens deutlich zu verbessern, nach welchem Verfahren die Faserstoffmasse durch mindestens ein Polymerretentionsmittel ausgeflockt wird, dadurch gekennzeichnet, dass als einziges Flockungsmittel ein vernetztes Polymer oder Copolymer verwendet wird, das durch Polymerisieren oder Copolymerisieren wasserlöslicher Monomere gebildet ist, die aus einfach ungesättigten Ethylenmonomeren, Allylmonomeren und Vinylmonomeren, insbesondere Acryl- oder Methacrylmomomeren oder Gemischen solcher Monomere ausgewählt sind, und dass das vernetzte Polymer vor der Zugabe zur oder das Einspritzen in die auszuflockende Suspension oder Fasermasse abgeschert wird, und dass das Abscheren bei einer Konzentration in der Größenordnung von 3 - 5 bis 10 -15 g an Füllmasse (d.h. Polymer)/Liter, vorzugsweise von 5 - 10 g/l bei 10.000 Umdrehungen/Minute oder in einem Haushaltsmixer im Wesentlichen mit derselben Größenordnung an Drehgeschwindigkeit eine Dauer von 15 - 30 Sekunden und 2 - 5 Minuten lang durchgeführt wird, und durch das Abscheren ein Ionenwiedergewinn IR von 40 bis 50% und bis zu mindestens 60 oder 70 % und sogar darüber erzielt wird, bis hin zu Werten über oder deutlich über 100, wobei: Ionenwiedergewinn IR = (X-Y)/Y x 100 wobei
    X :
    Ionizität nach dem Abscheren in meq/g.
    Y :
    Ionizität vor dem Abscheren in meq/g.
  2. Verfahren nach Anspruch 1, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass zur Herstellung des (Co)polymers Monomere verwendet werden, die aus nicht ionischen Monomeren ausgewählt sind.
  3. Verfahren nach Anspruch 1 oder 2, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass zumindest ein Teil der Monomere, die zur Ausbildung des Polymers verwendet werden, ionisch ist.
  4. Verfahren nach einem der Ansprüche 1 bis 3, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass nicht ionische Monomere verwendet werden, die aus Acrylamid, Methacrylamid, N-Vinylmethylacetamid oder N-Vinylformamid, Vinylacetat, Vinylpyrrolidon, Methylmethacrylat oder anderen Acrylestern oder anderen ethylenungesättigten Estern oder auch anderen wasserunlöslichen Vinylmonomeren wie Styrol oder Acrylnitril ausgewählt sind.
  5. Verfahren nach einem der Ansprüche 1 bis 4, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass anionische Monomere verwendet werden, die aus Natriumacrylat, Natriummethacrylat, Natriumitaconat, 2-Acrylamid-2-Methylpropansulfonat (AMPS), Sulfopropylacrylaten oder Sulfopropylmethacrylaten oder anderen wasserlöslichen Formen dieser polymerisierbaren Sulfon- oder Carbonsäuren, Natriumvinylsulfonat oder Allylsulfonat oder sulfomethyliertem Acrylamid ausgewählt sind.
  6. Verfahren nach einem der Ansprüche 1 und 3 bis 5, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass kationische Monomere verwendet werden, die aus Dialkylaminoalkylacrylaten oder -methacrylaten, insbesondere Dialkylaminoethylacrylat, sowie deren beispielsweise durch Benzyl-, Methyl-, Aryl-, Alkylchlorid, Dimethylsulfat oder Dialkylaminoalkylalkylacrylamide oder - methacrylamide gesäuerte oder quaternisierte Salze, beispielsweise Methacrylamidpropyltrimethylammoniumchlorid (MAPTAC) ausgewählt sind, bei denen die Alkylgruppen C1 - C4-Alkylgruppen sind.
  7. Verfahren nach einem der Ansprüche 1 bis 6, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Monomere hydrophobe Gruppen enthalten können.
  8. Verfahren nach einem der Ansprüche 1 bis 7, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Vernetzung während oder nach der Polymerisierung stattfindet, beispielsweise durch Umsetzen zweier löslicher Polymere, die Gegenione aufweisen, oder durch Umsetzen über Formaldehyd oder einer polyvalenten Metallverbindung.
  9. Verfahren nach einem der Ansprüche 1 bis 8, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Vernetzung während der Polymerisierung durch Zugabe eines Vernetzungsmittels stattfindet.
  10. Verfahren nach Anspruch 9, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Vernetzungsmittel, die beigemengt werden können, ionische Vernetzungsmittel umfassen, wie polyvalente Metallsalze, Formaldehyd, Glyoxal, oder auch vorzugsweise kovalente Vernetzungsmittel, die mit den Monomeren copolymerisieren, vorzugsweise diethylenungesättigte Monomere (wie die Familie der Diacrylatester wie die Diacrylate von Polyethylenglycolen PEG) oder polyethylenungesättigte Monomere der Art, die herkömmlicher Weise für die Vernetzung von wasserlöslichen Polymeren verwendet werden, und insbesondere Methylenbisacrylamid (MBA) oder auch andere bekannte Acrylvernetzungsmittel.
  11. Verfahren nach Anspruch 9 oder 10, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Menge von Vernetzungsmitteln und insbesondere von Methylenbisacrylamid (MBA), die beigemengt werden kann, 5 bis 100 ppm Vernetzungsmittel/Füllmasse (Polymer) beträgt.
  12. Verfahren nach Anspruch 11, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Menge von Vernetzungsmitteln, und insbesondere von Methylenbisacrylamid (MBA), die beigemengt werden kann, 5 bis 40 ppm Vernetzungsmittel/Füllmasse (Polymer) beträgt.
  13. Verfahren nach Anspruch 11 oder 12, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Menge von Vernetzungsmitteln, und insbesondere von Methylenbisacrylamid (MBA), die beigemengt werden kann, 20 ppm Vernetzungsmittel/Füllmasse (Polymer) beträgt.
  14. Verfahren nach einem der Ansprüche 1 bis 13, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass die Polymere durch ein Polymerisierungsverfahren in Phasenumkehremulsion (Wasser-in-Öl) hergestellt werden.
  15. Verfahren nach einem der Ansprüche 1 bis 14, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass das Einspritzen oder die Zugabe des erfindungsgemäß vernetzten und abgescherten Polymers im verdünnten Papierbrei (oder der verdünnten auszuflockenden Fasermasse) oder "thin stock" stattfindet, d.h. einem auf ca. 0,7 - 5% an Feststoffen wie Zellulosefasern, gegebenenfalls Füllstoffen, verschiedenen Additiven, die für die Papierherstellung gebräuchlich sind, verdünnten Brei.
  16. Verfahren nach einem der Ansprüche 1 bis 15, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass ein Teil des erfindungsgemäß vemetzten und abgescherten Polymers beim Herstellungsschritt des dicken Breis oder "thick stock" oder bei der Herstellung des dicken Breis zu 5% oder darüber zugegeben wird.
  17. Verfahren nach einem der Ansprüche 1 bis 16, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass das Abscheren in Hochdruckpumpen oder Turbinen stattfindet.
  18. Verfahren nach einem der Ansprüche 1 bis 17, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass ein Polymer verwendet wird, das eine schwache Strukturviskosität I.V. von 1 bis 3 aufweist, die nach der Anwendung des Abscherens zu einer hohen Strukturviskosität von 3 - 7 oder 8 wird.
  19. Verfahren nach einem der Ansprüche 1 bis 18, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass das Polymer aus Acrylamidmonomeren und Ethyltrimethylammoniumchloridacrylat hergestellt wird und durch Methylenbisacrylamid vernetzt wird.
  20. Verfahren nach einem der Ansprüche 1 bis 19, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass das Polymer aus Acrylamidmonomeren und Ethyltrimethylammoniumchloridacrylat vorzugsweise mit 20 oder 10 Mol-% an Acrylat hergestellt wird und durch Methylenbisacrylamid vernetzt wird.
  21. Verfahren nach einem der Ansprüche 1 bis 19, zur Herstellung eines Bogens Papier oder Pappe oder dergleichen, dadurch gekennzeichnet, dass das Polymer in Form einer inversen Wasser-in-Öl-Emulsion des vernetzten Polymers oder aber einer Polymerlösung verwendet wird, die durch Wiederauflösen eines Pulvers des vernetzten Polymers erhalten wird, wobei das Pulver selbst durch Trocknen der Emulsion durch "spray drying" bzw. Sprühtrocknung oder durch Ausfällen des Lösungsmittels oder Verdichten und Mahlen erhalten wird.
EP99920905A 1998-05-28 1999-05-21 Verfahren zur ausflockung bei der herstellung einer papierbahn Revoked EP1090185B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9806876A FR2779159B1 (fr) 1998-05-28 1998-05-28 Procede de floculation pour la fabrication d'une feuille de papier, carton ou analogue, emulsions reticulees comme nouveaux agents floculants de cette preparation, et les articles ainsi obtenus
FR9806876 1998-05-28
PCT/FR1999/001209 WO1999061702A1 (fr) 1998-05-28 1999-05-21 Procede de floculation pour la fabrication d'une feuille de papier

Publications (2)

Publication Number Publication Date
EP1090185A1 EP1090185A1 (de) 2001-04-11
EP1090185B1 true EP1090185B1 (de) 2004-08-11

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EP99920905A Revoked EP1090185B1 (de) 1998-05-28 1999-05-21 Verfahren zur ausflockung bei der herstellung einer papierbahn

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US (1) US6579417B1 (de)
EP (1) EP1090185B1 (de)
AT (1) ATE273417T1 (de)
AU (1) AU3830999A (de)
CA (1) CA2333508C (de)
DE (1) DE69919356T2 (de)
FR (1) FR2779159B1 (de)
WO (1) WO1999061702A1 (de)

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FR2869626A3 (fr) * 2004-04-29 2005-11-04 Snf Sas Soc Par Actions Simpli Procede de fabrication de papier et carton, nouveaux agents de retention et d'egouttage correspondants, et papiers et cartons ainsi obtenus
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AU2010295189B2 (en) 2009-09-15 2014-03-27 Suncor Energy Inc. Process for flocculating and dewatering oil sand mature fine tailings
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ES2720487T3 (es) * 2012-02-01 2019-07-22 Basf Se Proceso para la fabricación de papel y cartón
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CN113354773B (zh) * 2021-08-09 2021-10-29 山东诺尔生物科技有限公司 一种两性聚丙烯酰胺造纸助留剂及其制备方法

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CA2333508A1 (en) 1999-12-02
FR2779159B1 (fr) 2000-08-11
DE69919356D1 (de) 2004-09-16
ATE273417T1 (de) 2004-08-15
DE69919356T2 (de) 2005-09-08
EP1090185A1 (de) 2001-04-11
FR2779159A1 (fr) 1999-12-03
WO1999061702A1 (fr) 1999-12-02
AU3830999A (en) 1999-12-13
US6579417B1 (en) 2003-06-17
CA2333508C (en) 2010-05-18

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