EP0763159B2 - Verfahren zur papierherstellung - Google Patents

Verfahren zur papierherstellung Download PDF

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Publication number
EP0763159B2
EP0763159B2 EP96910068A EP96910068A EP0763159B2 EP 0763159 B2 EP0763159 B2 EP 0763159B2 EP 96910068 A EP96910068 A EP 96910068A EP 96910068 A EP96910068 A EP 96910068A EP 0763159 B2 EP0763159 B2 EP 0763159B2
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EP
European Patent Office
Prior art keywords
paper
starch
fibrous composition
approximately
process according
Prior art date
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Expired - Lifetime
Application number
EP96910068A
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English (en)
French (fr)
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EP0763159A1 (de
EP0763159B1 (de
Inventor
Marcel Dondeyne
Jean-Yves Petit
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Roquette Freres SA
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Roquette Freres SA
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Classifications

    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • D21H23/06—Controlling the addition
    • D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
    • D21H23/18—Addition at a location where shear forces are avoided before sheet-forming, e.g. after pulp beating or refining
    • 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
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums

Definitions

  • patent EP 0 276 200 in no way discloses the retention rate that can be obtained with regard to the cationic starch used (product "CATO 102" having a fixed nitrogen content of 0.30% approximately), nor the physical characteristics of the paper resulting from the implementation of such associations cationic polymer / anionic aluminum compound ".
  • anionic trash catchers PEI type products (polyethylene imine) or p-DADMAC (poly di alkyl dimethyl ammonium chloride) are more effective than a polychloride aluminum (the chemical composition of which is not specified), which is presented as "practically ineffective in terms of retention. "
  • Patent FR 2,289,674 describes the specific implementation, in media highly concentrated in sulfate alumina, amphoteric starches of the sulfo-succinate type with reduced cationicity (degree of substitution or "DS" announced 0.03 corresponding to a fixed nitrogen level of less than 0.30% relative to the dry weight of the starch) and this, in view improve the retention of titanium dioxide pigments.
  • the physical characteristics of the paper expressed by the MULLEN index alone, can be improved but in a very limited way (MULLEN max. obtained: 1.59).
  • Patent EP 257,338 describes the specific use of amphoteric starches of the phosphate type, in particular waxy base, cationicity qualifying as “low” or “medium” (maximum DS of 0.08 corresponding to a rate fixed nitrogen less than 0.7% / dry weight of starch). This document considers the interest of such amphoteric starches only for the sole purpose of improving the drip performance of the paper machine.
  • Patent application WO 81/00147 describes the preparation, by a complicated process, of an amphoteric mucus based on cationic starch of reduced cationicity and a CMC type polymer, intended to coat a structure filler / fiber.
  • patent EP 41,056 claiming the association between cationic starch and colloidal silicic acid. Such an association has been improved over time as it follows of the description of patent application WO 86/00100 (anionic agent of the aluminum silicate or silicic acid type modified by aluminum), of patent EP 348,366 (anionic agent of the polymeric silicic acid type having a specific surface area) and of patent EP 490,425 (cationic agent containing from 0.05 to 0.5% by weight of aluminum).
  • patents EP 349,366 and 490,425 are mainly focused on the "draining” and / or “retention” and do not really address the study of the physical characteristics of the paper.
  • the present invention relates to a process for manufacturing paper from a fibrous composition characterized in that said fibrous composition is brought into contact, simultaneously or not, with at least one cationic starch having a fixed nitrogen level greater than 0.95%, expressed on the dry weight starch and with at least one polyaluminium compound.
  • the cationic starches used in accordance with the invention can be obtained by any technique current or future, in aqueous medium, in solvent medium or in dry phase, capable of allowing one or more group (s) nitrogen (s) of an electropositive nature to be fixed on a starch or a mixture of starches of all kinds and origins when the nitrogen level thus fixed is greater than 0.95% by weight of dry starch.
  • the cationic starches used in the process according to the invention can in particular be prepared by one any of the cationization techniques, in particular dry phase cationization, described in the patents FR 2,434,821, FR 2,477,159, EP 233,336, EP 303,039, EP 333,292, EP 406,837, US 4,332,935 and US 429,444.
  • the cationic starches used according to the invention can moreover be of a "polycationic" nature. such as those described in the aforementioned patents EP 406,837 and US 429,444 since said starches have, in fine, a fixed nitrogen level greater than 0.95% on the dry weight of starch.
  • starches having a fixed nitrogen level from about 1.0% to about 3.0%, preferably from about 1.0% to about 2.5%, and even more preferably from 1% to 1.6%, based on the dry weight of starch.
  • Said starches can be based on potato, potato with high amylopectin content (waxy starch), corn, wheat, high amylopectin corn (waxy corn), corn high amylose, rice, pea or cassava content, based on cuts or fractions that can be made or obtained such as amylose, amylopectin, particle size sections known to those skilled in the art under the terms of starch wheat "A” and wheat starch “B", and any mixtures of at least any two of the above products.
  • the cationic starch which can be used for the production of paper according to the invention can in particular be consisting of a mixture of at least one cationic tuber starch, in particular potato starch cationic and at least one cationic cereal starch, in particular cationic corn or wheat.
  • the cationic starches used in the papermaking process according to the invention which have a fixed nitrogen level greater than 0.95% on the dry weight of starch, can simultaneously, previously or after cationization, have been subjected to any chemical and / or physical treatment.
  • the chemical treatment may in particular consist of one or other of the known crosslinking techniques, oxidation, alkaline treatment, acid and / or enzymatic hydrolysis, esterification or plasticization.
  • crosslinking technique is meant in particular any process involving an agent such as acid adipic acid or one of its derivatives, a halohydrin (for example epichlorohydrin), a trimetaphosphate (for example sodium), phosphorus oxychloride or a resin (for example based on formalin).
  • agent such as acid adipic acid or one of its derivatives, a halohydrin (for example epichlorohydrin), a trimetaphosphate (for example sodium), phosphorus oxychloride or a resin (for example based on formalin).
  • oxidation technique is understood to mean in particular any non-degradative oxidation process making it possible to substitute at least one OH group for the starch with a COOH group.
  • esterification techniques means in particular any process which makes it possible to substitute starch (already cationized or not), at least in one place, by acetate, phosphate, succinate, sulfo-succinate, alkenyl-succinate groups, sulfate, maleate, propionate or carboxyl.
  • the starches used in the papermaking process according to the invention can be consist of amphoteric starches, i.e. products which are both cationic (fixed nitrogen level greater than 0.95% / dry weight of starch) and anionic.
  • cationic starches can easily be used (in order to be contacted with the fibrous composition) in the form of dilute aqueous adhesives of variable concentrations, generally less than 20%, preferably between about 15% and about 1%.
  • the preparation of the adhesives is carried out in a manner known per se, by discontinuous or continuous cooking, by example, at 110-130 ° C, in a continuous pressure cooker or "jet-cooker" suitable for ensuring the operations of dosing, cooking and dilution.
  • the starch under the form of an uncooked or pregelatinized starch powder, this prior to and / or when it is brought into contact with the fibrous composition.
  • starches used in the context of the invention could allow the latter to dissolve satisfactorily (i.e. not instantaneously but gradually) under temperature conditions very significantly lower than those adopted in jet-cooker, for example at temperatures between 10 and 50 ° C approximately.
  • So powders starch can advantageously be brought into contact, by any suitable means, with fibrous compositions of which the temperature is brought and / or maintained by any suitable means to a value of about 25 ° C to about 50 ° C.
  • the present invention allows it, inter alia and by the nature of the starches which it implements, to simplify certain paper-making processes by eliminating traditional means of continuous cooking or discontinuous starch.
  • the cationic starch has a viscosity of approximately 300 to approximately 3000, preferably from 350 to 2500, BRABENDER units (UB).
  • Said viscosity is measured on a "BRABENDER 350 CMG" type device.
  • a starch sample (25.0 g) is used in sufficient water to obtain a total charge of 480 g. This is introduced in the baking chamber of the viscometer. Cooking is done in a controlled manner (1.5 ° C / min) and we appreciate the viscosity of the adhesive after it has been worn and then maintained for 20 minutes at a temperature of 92 ° C.
  • the cationic starch and the fibrous composition are put in contact under conditions such that said cationic starch represents from about 0.2 to about 6%, preferably from 0.3 to 4%, and even more preferably from 0.7 to 3%, of the weight of said fibrous composition.
  • the particular cationic starch such that described above is associated with at least one "anionic waste sensor" of a particular type, namely a compound polyaluminum.
  • the polyaluminium compound advantageously consists of a salt of formula I, II, IV or V and consists in particular of a product of the WAC, PAC 18 or EKOFLOCK type.
  • the polyaluminum compounds used according to the present invention have an aluminum content, expressed as Al 2 O 3 , of approximately 8% to approximately 20% by weight, in particular from 10% to 18% by weight.
  • the polyaluminium compound and the fibrous composition are brought into contact under conditions such that said polyaluminium compound, expressed by weight of Al 2 O 3 , represents from approximately 0.01% to approximately 0.5%, preferably 0.015% to 0.4%, of the weight of said fibrous composition.
  • the process according to the invention in no way imposes that the cationic starch be brought into contact with the fibrous composition before the polyaluminium compound, or conversely that the polyaluminium compound is brought into contact with the fibrous composition prior to cationic starch.
  • the Applicant Company even observed that it was entirely possible bringing the cationic starch and the polyaluminum compound simultaneously or almost simultaneously into contact with the composition fibrous.
  • the polyaluminium compound could, in particular in very closed circuits, be introduced, in whole or in part, at the same level as the canvas.
  • the polyaluminium compound can in particular be brought into contact with the fibrous composition between a level corresponding to the first vat in the wet part of the paper machine and a level just after the scrubber of the paper machine.
  • the cationic starch and the polyaluminum compound can be introduced into a indifferent order at the wet end of the paper machine, including being contacted simultaneously or almost simultaneously with the fibrous composition.
  • the time between contacting, respectively, either the cationic starch or the polyaluminum compound with the fibrous composition and contacting, respectively, either the compound polyaluminium or either the cationic starch with the fibrous composition is generally at most equal to 120 minutes approximately and in particular between 0 and 60 minutes, preferably between 0 and 45 minutes, and more preferably between 10 seconds and 40 minutes.
  • delays of the order of 25 seconds to 35 minutes in particular 30 seconds to 20 minutes between the respective use of the two products (cationic starch and polyaluminium compound, in any order).
  • the manufacturing process paper according to the invention has, among other advantages, in addition to being simple and cost-effective, to allow, especially in difficult conditions (pulp made from FCR or old paper, significant closure of circuits), obtain good starch retention, improve the physical characteristics of the paper and ensure machine speed meeting the requirements of practice, or even improving said machine speed and therefore, overall, improve the profitability of the system.
  • the Applicant Company has found that the simultaneous implementation or not, of a polyaluminium compound and of a cationic starch whose fixed nitrogen content is high, in accordance with the invention made it possible, in particular, to remove all or part of certain surface treatments applied to the sheet after his training.
  • the method according to the invention is characterized in that the paper obtained is not subjected, on any one of its two faces or even on all of its two faces, with no surface treatment putting using a starch, native or physically and / or chemically modified.
  • Another major advantage of the papermaking process according to the invention is, as indicated previously, to allow, compared to the techniques of the prior art, to obtain a starch retention rate improved without negatively influencing the physical characteristics of the paper and / or obtaining characteristics improved physical properties of the paper, without negatively influencing the starch retention rate.
  • the process which is the subject of the present invention is capable, including included in difficult conditions (FCR-based pulp or waste paper, significant closure of circuits) to improve significantly both the starch retention rate and the physical characteristics of the paper, as it will be exemplified below.
  • paper is not, as specified at the beginning of the description, in no way limiting and includes, in particular, papers for graphic uses (in particular for printing-writing, for inkjet printing, for offset printing, for reprography) and papers for wrapping and packaging (corrugated papers, for flexible packaging of the thin kraft type or others).
  • the Applicant Company has in particular observed that the process according to the invention was particularly well suitable for the production of cover or flute type paper for corrugated cardboard.
  • the method according to the invention makes it possible to obtain corrugated corrugated paper under conditions (starch retention, machine speed) improved compared to techniques of the prior art and / or having improved characteristics compared to said techniques.
  • the present invention is characterized in that the paper obtained is a paper for use graphic or paper for wrapping or packaging, in particular corrugated paper or cover paper for corrugated cardboard.
  • the fibrous composition which is used in the context of the present invention has, advantageously a so-called “neutral” or “pseudo neutral” pH, ie from about 6.0 to about 8.0, preferably from 6.1 to 7.1, said pH being able to be controlled or uncontrolled (“free pH”) as may be the case under difficult conditions operating.
  • the fibrous composition has a pH, controlled or not, lying between approximately 6.0 and approximately 8.0 and preferably between 6.1 and 7.1.
  • said fibrous composition can contain and / or be brought into contact, if necessary, with one or more the other of the products recommended in the aforementioned patents at the level of the prior art, including at least one product chosen from anionic starches, such as phosphorylated or sulfosuccinylated starches, bonding agents such as dimer aklyl ketene and succinic acid anhydrides, fillers, such as calcium carbonate and kaolin, retention agents such as polyacrylamides, polyethylene imines, polyalkyl ammonium chlorides and other synthetic retention agents, silicic and aluminosilicon compounds
  • anionic starches such as phosphorylated or sulfosuccinylated starches
  • bonding agents such as dimer aklyl ketene and succinic acid anhydrides
  • fillers such as calcium carbonate and kaolin
  • retention agents such as polyacrylamides, polyethylene imines, polyalkyl ammonium chlorides and other synthetic retention agents, silicic and
  • said fibrous composition can advantageously and at any time contain and / or be used in contact with a silica or aluminosilicon compound such as those described in patents EP 41 056 and EP 0 522 940 mentioned above and, optionally, a bonding agent and / or a filler.
  • a silica or aluminosilicon compound such as those described in patents EP 41 056 and EP 0 522 940 mentioned above and, optionally, a bonding agent and / or a filler.
  • This silicic or aluminosilicate compound can be introduced into the fibrous composition simultaneously starch or at a different time, posterior or anterior, usually spaced a few seconds to a few minutes from the moment of the introduction of said cationic starch.
  • the process for manufacturing paper according to the invention is also characterized in that the fibrous composition is brought into contact at any time before the formation of the sheet, with at least one silicic or aluminosilicon compound, in particular with a colloidal silicic acid, the particles of which have a specific surface of approximately 50 to approximately 1000 m 2 / g, as well as possibly with at least one filler or a bonding agent.
  • a fibrous composition (pulp) is reconstituted, by dilution in water, having the following main characteristics: pH 6.6 Total concentration 16.8 g / l Soluble concentration 13.7 g / l Acidity 0.24 g / l Resistivity 150 ohms Total ash 12.4 g / l Soluble ash 8.9 g / l
  • STARCH D Mixture 25/75 cationic starch / cationic wheat at 0.65% fixed nitrogen.
  • STARCH F Amphoteric starch of the sulfosuccinate type with a fixed nitrogen level of 0.25%.
  • the implementation, for these tests, is carried out at a rate of 2% of starch and, when it is present, of 1% of CPA.
  • the contact time between the starch and the fibrous composition is 5 minutes.
  • the contact time between the CPA (when it is used) and the fibrous composition is 6 minutes.
  • the MULLEN index makes it possible to assess the burst strength of a paper (for example example corrugated roofing paper) subjected to hydrostatic pressure increasing perpendicularly on its surface, said index taking into account the grammage of said paper.
  • a paper for example example corrugated roofing paper
  • the CMT 60 index is particularly suitable for the evaluation of corrugated paper for corrugated cardboard and in particular to the determination of the flat compression resistance of such paper.
  • a MULLEN index is obtained under these conditions (fibrous composition different from PATE 1, in particular) (value: 1.80) and a particularly high starch retention rate (value: 95%).

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Making Paper Articles (AREA)

Claims (11)

  1. Verfahren zur Herstellung von Papier aus einer Faserzusammensetzung, dadurch gekennzeichnet, dass man die Faserzusammensetzung gleichzeitig oder nicht mit mindestens einer kationischen Stärke, die einen Gehalt an gebundenem Stickstoff von über 0,95% aufweist, ausgedrückt in Trockengewicht der Stärke, und mit mindestens einer Polyaluminiumverbindung in Kontakt bringt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die kationische Stärke einen Gehalt an gebundenem Stickstoff von etwa 1,0% bis etwa 3,0%, vorzugsweise von 1,0% bis 2,5% und noch bevorzugter zwischen 1,0% und 1,6% besitzt.
  3. Verfahren nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Stärke bei Inkontaktbringen mit der Faserzusammensetzung in Form von nicht gekochtem Stärkepulver oder von vorgelierter Stärke vorliegt, wobei die Faserzusammensetzung vorzugsweise eine Temperatur von etwa 25°C bis etwa 50°C besitzt.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Polyaluminiumverbindung ein Polyaluminiumhydroxid, ein Polyaluminiumchlorid, ein basisches Polyaluminiumchlorid, ein basisches Polyaluminiumchlorsulfat oder ein Polyaluminiumsulfat ist, wobei diese Polyaluminiumverbindung vorzugsweise einen Aluminiumgehalt, ausgedrückt in Al2O3, von etwa 8 bis etwa 20 Gew.-% und vorzugsweise von 10 bis 18 Gew.-% besitzt.
  5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
    dass man die kationische Stärke zwischen einer dem Mahlholländer entsprechenden Höhe und einer gerade vor dem Auflaufkasten gelegenen Höhe, vorzugsweise zwischen einer gerade hinter dem Mahlholländer gelegenen Höhe und einer gerade vor der Mischungspumpe der Papiermaschine gelegenen Höhe, mit der Faserzusammensetzung in Kontakt bringt, und
    dass man die Polyaluminiumverbindung zwischen einer dem Mahlholländer entsprechenden Höhe und einer dem Auflaufkasten und/oder dem Abtropfwasser unter Sieb entsprechenden Höhe, vorzugsweise zwischen einer gerade hinter dem Mahlholländer gelegenen Höhe und einer gerade vor dem Auflaufkasten der Papiermaschine gelegenen Höhe mit der Faserzusammensetzung in Kontakt bringt.
  6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Zeit zwischen dem Inkontaktbringen der kationischen Stärke bzw. der Polyaluminiumverbindung mit der Faserzusammensetzung und dem Inkontaktbringen der Polyaluminiumverbindung bzw. der kationischen Stärke mit der Faserzusammensetzung 0 bis 60 Minuten, vorzugsweise 0 bis 45 Minuten und noch bevorzugter 10 Sekunden bis 40 Minuten beträgt.
  7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das erhaltene Papier nicht auf einer seiner beiden Seiten oder auf seinen beiden Seiten irgendeiner Oberflächenbehandlung unterzogen wird, bei der eine native oder physikalisch und/oder chemisch modifizierte Stärke verwendet wird.
  8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das erhaltene Papier ein Papier für grafische Zwecke oder ein Papier für die Verpackung oder Konditionierung, insbesondere ein Wellpapier oder ein Deckpapier für Wellpappe, ist.
  9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Faserzusammensetzung einen gesteuerten oder nicht gesteuerten pH besitzt, der zwischen etwa 6,0 und etwa 8,0, vorzugsweise zwischen 6,1 und 7,1, liegt.
  10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Faserzusammensetzung zu einem beliebigen Zeitpunkt vor der Bildung des Blattes mit mindestens einer Silizium- oder Aluminosiliziumverbindung, insbesondere einer kolloidalen Kieselsäure, in Kontakt gebracht wird, deren Teilchen eine spezifische Oberfläche von etwa 50 bis etwa 1000 m2/g besitzt, sowie ggf. mit mindestens einem Füllstoff oder einem Klebstoff.
  11. Verwendung einer kationischen Stärke mit einem Gehalt an gebundenem Stickstoff von über 0,95%, ausgedrückt in Trockengewicht der Stärke, und einer Polyaluminiumverbindung für die Herstellung von Papier, insbesondere von Papier zu grafischen Zwecken oder von Papier für die Verpackung oder Konditionierung und vor allem für Wellpapier für Wellpappe oder Deckpapier für Wellpappe.
EP96910068A 1995-03-31 1996-03-28 Verfahren zur papierherstellung Expired - Lifetime EP0763159B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9503823A FR2732368B1 (fr) 1995-03-31 1995-03-31 Nouveau procede de fabrication de papier
FR9503823 1995-03-31
PCT/FR1996/000468 WO1996030591A1 (fr) 1995-03-31 1996-03-28 Procede de fabrication de papier

Publications (3)

Publication Number Publication Date
EP0763159A1 EP0763159A1 (de) 1997-03-19
EP0763159B1 EP0763159B1 (de) 2001-12-05
EP0763159B2 true EP0763159B2 (de) 2004-12-08

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ID=9477625

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EP96910068A Expired - Lifetime EP0763159B2 (de) 1995-03-31 1996-03-28 Verfahren zur papierherstellung

Country Status (13)

Country Link
US (1) US5891305A (de)
EP (1) EP0763159B2 (de)
JP (1) JPH10501590A (de)
AT (1) ATE210220T1 (de)
AU (1) AU5338296A (de)
BR (1) BR9605947A (de)
CA (1) CA2190499A1 (de)
DE (1) DE69617573T3 (de)
ES (1) ES2169234T3 (de)
FR (1) FR2732368B1 (de)
NO (1) NO317239B1 (de)
NZ (1) NZ305397A (de)
WO (1) WO1996030591A1 (de)

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CO5070714A1 (es) 1998-03-06 2001-08-28 Nalco Chemical Co Proceso para la preparacion de silice coloidal estable
US6379501B1 (en) 1999-12-14 2002-04-30 Hercules Incorporated Cellulose products and processes for preparing the same
EP1338699A1 (de) * 2002-02-08 2003-08-27 AKZO Nobel N.V. Leimungsdispersion
KR100755895B1 (ko) 2004-08-31 2007-09-06 은광판지포장 주식회사 부식방지 및 전자파 차단용 골판지
EP2682419A1 (de) 2012-07-06 2014-01-08 Cryovac, Inc. Anti-nebel Beschichtungszusammensetzung und dessen Anti-nebel-Polyesterfolie
US8821689B1 (en) * 2013-01-25 2014-09-02 Penford Products Co. Starch-biogum compositions
CN108130801B (zh) 2013-12-18 2020-11-24 艺康美国股份有限公司 生产用于造纸的活化胶态二氧化硅的方法
CN107447582B (zh) 2016-06-01 2022-04-12 艺康美国股份有限公司 用于在高电荷需求系统中造纸的高效强度方案
US12584273B2 (en) 2021-08-31 2026-03-24 Ecolab Usa Inc. Composition and method for papermaking

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EP0763159A1 (de) 1997-03-19
BR9605947A (pt) 1997-08-19
ES2169234T3 (es) 2002-07-01
FR2732368B1 (fr) 1997-06-06
ATE210220T1 (de) 2001-12-15
DE69617573T2 (de) 2002-08-01
DE69617573T3 (de) 2005-08-11
NZ305397A (en) 1997-12-19
US5891305A (en) 1999-04-06
WO1996030591A1 (fr) 1996-10-03
DE69617573D1 (de) 2002-01-17
NO317239B1 (no) 2004-09-27
FR2732368A1 (fr) 1996-10-04
EP0763159B1 (de) 2001-12-05
AU5338296A (en) 1996-10-16
CA2190499A1 (en) 1996-10-03
NO965024D0 (no) 1996-11-26
NO965024L (no) 1996-11-26
JPH10501590A (ja) 1998-02-10

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