EP1727938B1 - Procede de fabrication de papier, de carton-pate et de carton - Google Patents

Procede de fabrication de papier, de carton-pate et de carton Download PDF

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Publication number
EP1727938B1
EP1727938B1 EP05716030A EP05716030A EP1727938B1 EP 1727938 B1 EP1727938 B1 EP 1727938B1 EP 05716030 A EP05716030 A EP 05716030A EP 05716030 A EP05716030 A EP 05716030A EP 1727938 B1 EP1727938 B1 EP 1727938B1
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Prior art keywords
stock
consistency
polymers
paper
mol
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EP05716030A
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German (de)
English (en)
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EP1727938A1 (fr
Inventor
Anton Esser
Rainer Blum
Joachim Kuhn
Marc Leduc
Ralf Hemel
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BASF SE
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BASF SE
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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
    • 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
    • D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
    • 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

Definitions

  • the invention relates to a process for the production of paper, paperboard and cardboard by dewatering a pulp containing contaminants in the presence of polymers containing vinylamine units and having an average molecular weight M w of at least 1 million.
  • From the EP-A-0 438 707 is a process for the production of paper, paperboard and cardboard by dewatering a contaminant-containing stock in the presence of hydrolyzed homo- and / or copolymers of N-vinylformamide having a degree of hydrolysis of at least 60% known as fixing agents and cationic retention agents.
  • the polymers used as fixing agents have Fikentscher K values of 30 to 150 (measured in 5% strength aqueous sodium chloride solution at a polymer concentration of 0.5% by weight and a temperature of 25 ° C.).
  • the hydrolyzed polymers are used as dehydrating, retention and flocculating agents a thin material (density of, for example, 0.4 or 0.5 wt .-%) in amounts of 0.002 to 0.1 wt .-%, each based on dry pulp, used.
  • WO-A-98/48112 discloses a process for the production of paper, paperboard and paperboard, wherein a contaminant-containing pulp in the presence of a fixing agent from a 25 to 55% hydrolyzed homo- or copolymer of N-vinylformamide having a K value of Fikentscher of 30 to 150 (Determined in 1 wt .-% aqueous solution at 25 ° C) and a retention agent dehydrated.
  • polymers containing vinylamine units disclosed in the above references are good fixers or dewatering, flocculation and retention aids, in practice, in the processing of pulp containing contaminants such as coated broke, still deposition problems in the wire, press and Drying section of the paper machine. The paper machine must then be turned off and cleaned.
  • the invention has the object of minimizing or eliminating the abovementioned deposition problems in the paper machine in the processing of pulp-containing paper materials, in particular in the reuse of coated broke.
  • the object is achieved by a method for the production of paper, cardboard and paperboard by dewatering a contaminant-containing paper stock molecular weight M w of at least 1 million, if you first prepare a thick stock, at least one vinylamine units containing polymer having an average molecular weight M w of dosed at least 1 million and a degree of hydrolysis of 1 to 20 mol% in the thick material, diluted the thick matter by adding water to a thin material and dehydrated the thin.
  • the consistency of the thick material is for example more than 2 wt .-%, based on dry pulp.
  • the degree of hydrolysis of the polymers is in most cases from 3 to 15 mol%.
  • Preference is given to a thick material with a consistency of 3.0 to 6.0 wt .-%, based on dry pulp, and vinylamine units containing polymers having a degree of hydrolysis of 5 to 12 mol% of.
  • the consistency of the thick material is preferably 3.5 to 4.5 wt .-%, based on dry pulp.
  • the thick matter is converted by adding water into a so-called thin material which has a substance concentration below 1.5% by weight, based on dry paper stock. In most cases, the substance concentration of the thin material is below 1.2% by weight, for example 0.5 to 1.1% by weight, preferably 0.6 to 0.9% by weight, in each case based on dry paper stock.
  • paper stocks are used, for the production of which all fiber qualities or mixtures of fibers come into consideration.
  • water is usually used in practice, which is at least partially, in most cases even completely, returned from the paper machine. These are either clarified or unclarified white water as well as mixtures of such water qualities.
  • the recycled water therefore contains more or less large amounts of so-called impurities, which are known to affect the effectiveness of the cationic retention and dehydration agents or the "runnability" of the paper machine very much, see. HL Baumgarten, The Paper, Volume 38, Issue 10 A, pp. V121 to V125 (1984 ).
  • Soluble impurities are e.g. Humic acids, lignosulfonate, silicas or wood extracts.
  • Insoluble, lipophilic / hydrophobic impurities - so-called stickies or white pitch - are derived, for example, from process chemicals used in paper production, binders for paper and board blending, and adhesives for paper processing. These may be, for example, pressure-sensitive adhesives, dispersion adhesives or hot-melt adhesives, or else printing ink binders or paper processing materials. Problems with the "runnability" of the paper machine occur in particular in the use of waste paper and in the return of coated broke. In the preparation of these stocks, larger particles, e.g.
  • Wood pulp includes, for example, groundwood, thermomechanical pulp (TMP), chemo-thermo-mechanical pulp (CTMP), pressure groundwood, semi-pulp, high yield pulp, and refiner mechanical pulp (RMP).
  • TMP thermomechanical pulp
  • CMP chemo-thermo-mechanical pulp
  • RMP refiner mechanical pulp
  • pulp for example, sulphate, sulphite and soda pulps come into consideration.
  • unbleached pulp also referred to as unbleached kraft pulp
  • Suitable annual plants for the production of pulps are, for example, rice, wheat, sugar cane and kenaf.
  • pulps waste paper is usually used, which is used either alone or in admixture with other pulps or one starts from fiber blends of a primary material and recycled coated broke, e.g. bleached pine sulfate mixed with recycled coated board.
  • polymers containing vinylamine units which are obtainable by hydrolysis of homopolymers and / or copolymers of N-vinylcarboxamides are metered into the thick stock.
  • vinylamine units containing polymers hydrolyzed homopolymers of N-vinylformamide having a degree of hydrolysis of 1 to 20 mol% used.
  • the polymers in question have an average molecular weight M w of at least 1 million, usually from 1 to 10 million daltons, preferably 1.5 to 3.5 million daltons.
  • the polymers have for example a charge density of 0.5 to 5.0, preferably 1.5 to 3.5 meq / g.
  • Polymers containing vinylamine units are known in the art, cf. especially EP-A-0 438 755 , Page 3, line 15 to page 4, line 20, US-A-4,421,602 such as EP-A-0 231 901 ,
  • the polymers are obtainable by homopolymerization or copolymerization of N-vinylcarboxamides such as N-vinylformamide, N-vinylacetamide, N-ethyl-N-vinylformamide, N-ethyl-N-vinylacetamide, N-methyl-N-vinylformamide, N-methyl-N vinylacetamide and N-vinylpropionamide.
  • N-vinylformamide Preferably starting from N-vinylformamide.
  • the polymers containing copolymerized units of N-vinylcarboxamides are partially hydrolyzed.
  • the degree of hydrolysis of the vinylcarboxylic acid amide polymers is preferably from 3 to 15, and more preferably from 5 to 12, mol%.
  • the degree of hydrolysis corresponds to the content of the polymers of vinylamine groups in mol%.
  • the hydrolysis is preferably carried out in the presence of an acid or a base. However, the polymers can also be hydrolyzed enzymatically.
  • the corresponding ammonium salts of the polymers while in the hydrolysis with bases the vinylamine units of the polymers are present in the form of the free bases , the copolymerized in the copolymer vinyl ester units are partially or completely converted into vinyl alcohol units.
  • the vinylamine units of the polymers may optionally be modified by converting them into the quaternization products in a known manner, e.g. by reaction of the polymers with dimethyl sulfate.
  • the polymers containing vinylamine units are metered into the thick material in the production of paper, for example in an amount of 0.002 to 0.1% by weight, based on dry paper stock.
  • the invention also provides the use of hydrolyzed homo- or copolymers of N-vinylcarboxamides having a degree of hydrolysis of 1 to 20 mol% and an average molecular weight M w of at least 1 million in the production of paper, paperboard or cardboard as an additive to a Heavy material containing impurities for reducing deposits in the wire, press and dryer sections of paper machines.
  • At least one retention agent is metered into the thin material.
  • a retention agent all polymeric substances described here can be used. So you can, for example, from the US-A-4,421,602 known partially hydrolyzed homopolymers of N-vinylformamide used as a retention agent. The degree of hydrolysis of the copolymerized N-vinylformamide units may be 1 to 100%. However, it is also possible to use unhydrolysed polymers of N-vinylformamide as retention agent. Such polymers have for example K values of at least 160, preferably 180 to 300 (determined according to H. Fikentscher in 5% strength aqueous sodium chloride solution at 25 ° C. and a polymer concentration of 0.5% by weight).
  • retention aids are, for example, polyacrylamides which can be used in unmodified form or in cationically or anionically modified form.
  • Copolymers of acrylamide or methacrylamide are cationically modified, for example, by copolymerization with dialkylaminoethyl acrylates or dialkylaminoethyl methacrylates.
  • retention aids are copolymers of acrylamide and N, N-dimethylaminoethyl acrylate or copolymers of acrylamide and N, N-diethylaminoethyl acrylate.
  • the basic acrylates are contained, for example, in amounts of from 5 to 70, preferably from 8 to 40, mol% in the copolymers and are preferably present in acids neutralized or in quaternized form.
  • the quaternization can be carried out, for example, with methyl chloride or dimethyl sulfate.
  • Acrylamide and methacrylamide can also be anionically modified by copolymerizing with monoethylenically unsaturated carboxylic acids.
  • High molecular weight copolymers of, for example, acrylamide and acrylic acid are known retention aids.
  • the content of anionic comonomers in the copolymers is for example 5 to 50, preferably 10 to 40 wt .-%.
  • the cationically or anionically modified poly (meth) acrylamides have, for example, K values of at least 180 (determined according to H. Fikentscher in 5% strength aqueous sodium chloride solution at 25 ° C. and a polymer concentration of 0.5% by weight).
  • cationic retention aids are polyethyleneimines, polyamines having molar masses of more than 50,000, polyamidoamines, optionally by grafting with ethyleneimine and subsequent crosslinking with, for example, polyethylene glycol dichlorohydrin ethers according to the teaching of US Pat DE-C-24 34 816 or are crosslinked with epichlorohydrin, polyetheramines, polyvinylimidazoles, polyvinylimidazoles, polyvinyltetrahydropyridines, polydialkylaminoalkyl vinyl ethers, polydialkylaminoalkyl (meth) acrylates in protonated or quaternized form, polydiallyldialkylammonium halides, in particular polydiallyldimethylammonium chloride.
  • Particularly preferred retention aids are those specified above DE-C-24 34 816 known polyamidoamines grafted with ethyleneimine and subsequently crosslinked.
  • a retention agent it is also possible to use the microparticle systems of high molecular weight polyacrylamides and bentonite known from the literature, initially adding a high molecular weight cationic polyacrylamide to the paper stock, subjecting the paper stock to shear, and then metering in bentonite.
  • Such methods are for example the subject of EP-A-0 235 893 and the EP-A-0 335 575 .
  • Another order of dosing of polymeric retention aid and inorganic particles such as bentonite is out DE-A-102 36 252 known. It is preferable to use cationic retention aids.
  • the retention agents are usually used in an amount of from 0.01 to 0.2% by weight, based on dry paper stock, applied.
  • the ratio of polymers to be used according to the invention containing 1 to 20 mol% of vinylamine units with molar masses of> 1 million to retention agent is, for example, 1: 2 to 5: 1.
  • the process according to the invention it is possible to add further customary products in the customary amounts to the thin material, e.g. Sizing agents, strength agents (wet and dry strength agents), biocides and / or dyes.
  • Sizing agents e.g. Sizing agents, strength agents (wet and dry strength agents), biocides and / or dyes.
  • Wood-free base paper with a basis weight of 150 g / cm 2 was continuously produced on a paper machine.
  • the composition of the pulp in the mixing chest consisted of 14% bleached pine sulfate, 34% bleached birch sulphite, 21% coated broke and 31% ground calcium carbonate, the pulp concentration being 4% based on dry pulp.
  • the capacity of the paper machine was 20 t / h.
  • the finished paper contained about 18% ground calcium carbonate.
  • the fibers were fed to the mixing chest in separate strands.
  • the one in the mixer 4% stock was diluted by feeding water from the paper machine circuit to a 0.8% concentration of dry stock.
  • the machine ran flawlessly. After a period of one month, the machine was routinely shut down and cleaned. However, the deposits on the machine were not so serious that you should have turned off the machine.
  • Example 1 was repeated with the sole exception that, instead of PVAm 3, 400 g / t of polyaluminum chloride in the form of an 18% aqueous solution were now metered into the strand in which the coated broke was transported.
  • the running characteristics of the machine and the quality of the paper produced are unsatisfactory.
  • the paper production had to be interrupted after a running time of the machine of 3 days to remove interfering deposits on the wire, press and dryer section of the machine.
  • Example 1 was repeated with the sole exception that, instead of PVAm 3, 400 g / t of PVAm 1 were now metered into the strand in which the coated broke was transported. Although the running properties of the machine and the quality of the paper produced are improved compared to Comparative Example 1, the paper production also had to be interrupted after a running time of the machine of 3 days to remove disturbing deposits on the screen, press and dryer section of the machine.
  • Example 1 was repeated with the sole exception that instead of PVAm 3, 400 g / t of PVAm 2 were now metered into the strand in which the coated broke was transported. Although the running characteristics of the machine and the quality of the produced paper are improved over Comparative Example 1, the paper production had to be interrupted after a running time of the machine of 4 days to remove disturbing deposits on the screen, press and dryer section of the machine.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Claims (9)

  1. Procédé de fabrication de papier, de carton-pâte et de carton par déshydratation d'une pâte à papier contenant des substances perturbatrices en présence de polymères contenant des unités vinylamine et ayant une masse molaire moyenne Mw d'au moins 1 million, caractérisé en ce que l'on prépare d'abord une pâte, on ajoute à la pâte au moins un polymère contenant des unités vinylamine d'une masse molaire moyenne MW d'au moins 1 million et ayant un degré d'hydrolyse de 1 à 20 % molaires, on dilue la pâte par addition d'eau pour obtenir une matière diluée et on déshydrate la matière diluée.
  2. Procédé suivant la revendication 1, caractérisé en ce que la consistance de la pâte est de plus de 2 % en poids, par rapport à la pâte à papier sèche, et que le degré d'hydrolyse du polymère est de 3 à 15 % molaires.
  3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que la consistance de la pâte est de 3,0 à 6,0 % en poids, par rapport à la pâte à papier sèche, et que le degré d'hydrolyse du polymère est de 5 à 12 % molaires.
  4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que la consistance de la pâte est de 3,5 à 4,5 % en poids, par rapport à la pâte à papier sèche, et que la consistance de la matière diluée est ajustée à une concentration de moins de 1,5 % en poids, par rapport à la pâte à papier sèche.
  5. Procédé suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on met en oeuvre des polymères contenant des unités vinylamine, que l'on peut obtenir par hydrolyse d'homo- et/ou de copolymères d'amides N-vinylcarboxyliques.
  6. Procédé suivant la revendication 5, caractérisé en ce que l'on met en oeuvre en tant que polymères contenant des unités vinylamine des homopolymères hydrolysés de N-vinylformamide d'un degré d'hydrolyse de 1 à 20 % molaires.
  7. Procédé suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que l'on ajoute au moins un agent de rétention à la matière diluée.
  8. Procédé suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que la quantité du polymère contenant des unités vinylamine ajouté à la pâte est de 0,002 à 0,1 % en poids, par rapport à la pâte à papier sèche.
  9. Utilisation d'homo- ou de copolymères d'amides N-vinylcarboxyliques hydrolysés, ayant un degré d'hydrolyse de 1 à 20 % molaires et une masse molaire moyenne MW d'au moins 1 million, dans la fabrication de papier, de carton-pâte ou de carton, en tant qu'additifs pour une pâte contenant des substances perturbatrices, afin de réduire des dépôts dans les parties de criblage, de pressage et de séchage de machines à papier.
EP05716030A 2004-03-16 2005-03-14 Procede de fabrication de papier, de carton-pate et de carton Active EP1727938B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004013007A DE102004013007A1 (de) 2004-03-16 2004-03-16 Verfahren zur Herstellung von Papier, Pappe und Karton
PCT/EP2005/002685 WO2005090678A1 (fr) 2004-03-16 2005-03-14 Procede de fabrication de papier, de carton-pate et de carton

Publications (2)

Publication Number Publication Date
EP1727938A1 EP1727938A1 (fr) 2006-12-06
EP1727938B1 true EP1727938B1 (fr) 2008-04-02

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EP05716030A Active EP1727938B1 (fr) 2004-03-16 2005-03-14 Procede de fabrication de papier, de carton-pate et de carton

Country Status (10)

Country Link
US (2) US8337665B2 (fr)
EP (1) EP1727938B1 (fr)
KR (1) KR101136290B1 (fr)
CN (1) CN1934315B (fr)
AT (1) ATE391207T1 (fr)
BR (1) BRPI0508262A (fr)
CA (1) CA2558277C (fr)
DE (2) DE102004013007A1 (fr)
WO (1) WO2005090678A1 (fr)
ZA (1) ZA200608558B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9982394B2 (en) 2014-01-22 2018-05-29 Kemira Oyj Papermaking agent composition and method for treating fibre stock

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004052957A1 (de) * 2004-10-29 2006-05-04 Basf Ag Verfahren zur Herstellung von gekrepptem Papier
JP2012516950A (ja) * 2009-02-05 2012-07-26 ビーエーエスエフ ソシエタス・ヨーロピア 高い乾燥強度を有する紙、板紙及び厚紙の製造法
EP2443282A1 (fr) * 2009-06-16 2012-04-25 Basf Se Procédé de réduction de dépôts dans la partie sèche lors de la fabrication de papier et carton
JP2013508568A (ja) * 2009-10-20 2013-03-07 ビーエーエスエフ ソシエタス・ヨーロピア 高い乾燥強度を有する紙、板紙及び厚紙の製造方法
FR2992981B1 (fr) * 2012-07-09 2014-07-04 Snf Sas Procede ameliore de fabrication de papier utilisant un polymere obtenu par degradation d'hofmann
CN105399897B (zh) * 2015-12-30 2017-08-25 中国石油化工股份有限公司 耐温抗盐聚丙烯酰胺类聚合物及其制备方法
KR20230116829A (ko) 2020-12-04 2023-08-04 에이지씨 케미컬스 아메리카스 인코포레이티드 처리된 물품, 처리된 물품을 제조하는 방법, 및 처리된 물품을 제조하는 데 이용하기 위한 분산액

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213873A1 (de) * 1982-04-15 1983-10-27 Basf Ag, 6700 Ludwigshafen Flockungsmittel fuer schlaemme
FI70230C (fi) * 1981-07-18 1986-09-15 Basf Ag Rakkedjiga basiska polymerisat foerfarande foer deras framstaellning och deras anvaendning
DE3534273A1 (de) * 1985-09-26 1987-04-02 Basf Ag Verfahren zur herstellung von vinylamin-einheiten enthaltenden wasserloeslichen copolymerisaten und deren verwendung als nass- und trockenverfestigungsmittel fuer papier
GB8602121D0 (en) * 1986-01-29 1986-03-05 Allied Colloids Ltd Paper & paper board
DE3620065A1 (de) 1986-06-14 1987-12-17 Basf Ag Verfahren zur herstellung von papier, pappe und karton
DE4001045A1 (de) 1990-01-16 1991-07-18 Basf Ag Verfahren zur herstellung von papier, pappe und karton
DE4002065A1 (de) 1990-01-25 1991-08-01 Basf Ag Verfahren zur herstellung von papier, pappe und karton aus stoerstoffe enthaltenden papierstoffen
US5131982A (en) * 1990-02-26 1992-07-21 Nalco Chemical Company Use of dadmac containing polymers for coated broke treatment
GB9301451D0 (en) * 1993-01-26 1993-03-17 Allied Colloids Ltd Production of filled paper
US5720888A (en) 1993-11-12 1998-02-24 Betzdearborn Inc. Water-soluble cationic copolymers and their use as flocculants
GB9410920D0 (en) * 1994-06-01 1994-07-20 Allied Colloids Ltd Manufacture of paper
US6273998B1 (en) * 1994-08-16 2001-08-14 Betzdearborn Inc. Production of paper and paperboard
US20030192664A1 (en) * 1995-01-30 2003-10-16 Kulick Russell J. Use of vinylamine polymers with ionic, organic, cross-linked polymeric microbeads in paper-making
DE19627553A1 (de) 1996-07-09 1998-01-15 Basf Ag Verfahren zur Herstellung von Papier und Karton
DE19654390A1 (de) * 1996-12-27 1998-07-02 Basf Ag Verfahren zur Herstellung von Papier
DE19716821A1 (de) 1997-04-22 1998-10-29 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton
DE19719059A1 (de) 1997-05-06 1998-11-12 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton
US6835282B2 (en) * 1998-10-16 2004-12-28 Grain Processing Corporation Paper web with pre-flocculated filler incorporated therein
FR2791688B1 (fr) * 1999-03-29 2005-03-18 Snf Sa Nouveaux procedes de synthese d'agents floculants et coagulants de type polyvinylamine pva, nouveaux agents obtenus, et leurs utilisations et papiers ameliores ainsi obtenus.
US6379501B1 (en) * 1999-12-14 2002-04-30 Hercules Incorporated Cellulose products and processes for preparing the same
DE20220979U1 (de) * 2002-08-07 2004-10-14 Basf Ag Papierprodukt
US20040118540A1 (en) * 2002-12-20 2004-06-24 Kimberly-Clark Worlwide, Inc. Bicomponent strengtheninig system for paper
CN1784525A (zh) * 2003-05-09 2006-06-07 阿克佐诺贝尔公司 一种造纸方法
DE102004044379B4 (de) * 2004-09-10 2008-01-10 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton und Verwendung einer Retentionsmittelkombination
DE102005043800A1 (de) * 2005-09-13 2007-03-22 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9982394B2 (en) 2014-01-22 2018-05-29 Kemira Oyj Papermaking agent composition and method for treating fibre stock

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ZA200608558B (en) 2008-06-25
WO2005090678A1 (fr) 2005-09-29
US8337665B2 (en) 2012-12-25
DE102004013007A1 (de) 2005-10-06
KR20070011377A (ko) 2007-01-24
US20070181274A1 (en) 2007-08-09
US8486227B2 (en) 2013-07-16
CN1934315A (zh) 2007-03-21
BRPI0508262A (pt) 2007-07-31
CA2558277C (fr) 2013-11-12
CA2558277A1 (fr) 2005-09-29
ATE391207T1 (de) 2008-04-15
KR101136290B1 (ko) 2012-04-24
DE502005003567D1 (de) 2008-05-15
CN1934315B (zh) 2010-08-18
US20130014908A1 (en) 2013-01-17
EP1727938A1 (fr) 2006-12-06

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