EP0335575B2 - Fabrication de papier et carton - Google Patents

Fabrication de papier et carton Download PDF

Info

Publication number
EP0335575B2
EP0335575B2 EP89302842A EP89302842A EP0335575B2 EP 0335575 B2 EP0335575 B2 EP 0335575B2 EP 89302842 A EP89302842 A EP 89302842A EP 89302842 A EP89302842 A EP 89302842A EP 0335575 B2 EP0335575 B2 EP 0335575B2
Authority
EP
European Patent Office
Prior art keywords
polymer
molecular weight
suspension
low molecular
stock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89302842A
Other languages
German (de)
English (en)
Other versions
EP0335575A2 (fr
EP0335575A3 (en
EP0335575B1 (fr
Inventor
John Graham Langley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ciba Specialty Chemicals Water Treatments Ltd
Original Assignee
Ciba Specialty Chemicals Water Treatments Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26293708&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0335575(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB888807444A external-priority patent/GB8807444D0/en
Priority claimed from GB888815219A external-priority patent/GB8815219D0/en
Application filed by Ciba Specialty Chemicals Water Treatments Ltd filed Critical Ciba Specialty Chemicals Water Treatments Ltd
Priority to AT89302842T priority Critical patent/ATE86693T1/de
Publication of EP0335575A2 publication Critical patent/EP0335575A2/fr
Publication of EP0335575A3 publication Critical patent/EP0335575A3/en
Application granted granted Critical
Publication of EP0335575B1 publication Critical patent/EP0335575B1/fr
Publication of EP0335575B2 publication Critical patent/EP0335575B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
    • 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
    • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
    • D21H23/765—Addition of all compounds to the pulp
    • 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
    • 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
    • D21H23/16—Addition before or during 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/08—Mechanical or thermomechanical pulp
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres
    • 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
    • D21H17/20—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
    • 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
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • 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

Definitions

  • Paper or paper board is made by providing a thick stock, diluting the thick stock to form a thin stock, draining the thin stock to form a sheet and drying the sheet.
  • the thick stock can be made either by mixing water into dried pulp or, in an integrated mill, by diluting a drained pulp.
  • the normal way of preparing it for drainage is by adding inorganic material, such as alum, talc or bentonite, at the pulping or thick stock stages.
  • inorganic material such as alum, talc or bentonite
  • a dry strength resin for instance a cationic starch
  • paper or paper board is made by a process comprising providing a cellulosic suspension of which at least 25% by weight is formed by mechanically derived pulp, subjecting this to one or more shear stages selected from cleaning, mixing and pumping stages, adding a main polymer which is a high molecular weight , water soluble , synthetic cationic polymer having molecular weight above 500,000 and intrinsic viscosity above 4 dl/g, before one of the shear stages and adding bentonite after that shear stage, draining the suspension to form a sheet and drying the sheet, and in this process drainage is improved by adding to the suspension before the main polymer a low molecular weight water soluble synthetic cationic polymer having molecular weight lower than the molecular weight of the main polymer, and having intrinsic viscosity below 2 dl/g in an amount in the range 0.01 to 0.2% based on the dry weight of the suspension.
  • a main polymer which is a high molecular weight , water soluble , synthetic cationic poly
  • the inclusion of the low molecular weight cationic polymer in the thin stock before addition of the main polymer leads to improvement in the drainage characteristics obtained by the addition of the main polymer before a shear stage and bentonite after that shear stage. Depending upon the other conditions, it can also lead to reduced problems due to pitch and other sticky materials and can lead to improved wet and/or dry strengths, runability, linting, opacity and other paper qualities.
  • the aqueous cellulosic suspension can be made either from dried pulp or, in an integrated mill, by diluting a drained pulp, all in conventional manner.
  • Intrinsic viscosities herein derived in standard manner from determination of solution viscosities by suspended level viscometer of solutions at 25°C in 1 Molar NaCl buffered to pH about 7 using sodium phosphate.
  • the remainder of the process, after adding the low molecular weight polymer should be similar to the "Hydrocol" process and, thus, should be otherwise conducted as in EP-A-235,893, using a synthetic cationic polymer having molecular weight at least 500,000 and IV above 4 dl/g before one of the shear stages and bentonite after.
  • the materials and processing conditions described in EP-A-235,893 can be used in the invention, subject to the modification that the suspension includes the low molecular weight polymer before addition of the main polymer.
  • the low molecular weight polymer can be present in the thick stock that is diluted to form the thin stock or it may be added to the thin stock.
  • the thick stock is diluted to form the thin stock by use of white water. It is desirable to add the low molecular weight polymer before, or immediately after or during, the dilution with white water and to add the main polymer to the thin stock, after the addition of the low molecular weight polymer.
  • the low molecular weight polymer should have a molecular weight sufficiently lower than the molecular weight of the main polymer that it will provide different process or performance benefits.
  • the low molecular weight polymer has intrinsic viscosity below 2 dl/g and usually has molecular weight below 500,000.
  • the molecular weight is usually above 50,000 and often above 100,000.
  • a preferred relatively low molecular weight polymer is polyethylene imine.
  • a suitable grade of this type of polymer is the material sold under the trade name Polymin SK.
  • Other suitable materials are polymers and copolymers of dially dimethyl ammonium chloride, of dialkylaminoalkyl (meth) acrylates and of dialkylaminoalkyl (meth) acrylamides (both generally as acid addition or quaternary ammonium salts), as well as polyamines and polydicyandiamides-formaldehyde polymers. Amphoteric synthetic polymers may be used.
  • the process according to the invention utilises a relatively crude stock containing significant amounts of pitch and/or having high cationic demand. For instance it may require at least 0.1% Polymin SK to give improved retention when the Polymin SK is used in conventional manner as retention aid.
  • Polymin is a trade mark.
  • Such stocks are those containing more than 25% by weight, usually more than 50% by weight, of mechanically derived pulps and/or deinked pulps.
  • mechanically derived pulps we mean groundwood, pressure refined groundwood, thermo-mechanical, chemi-thermo mechanical or any other high yield mechanically derived fibres.
  • the process is of particular value when the stock is to be used for the manufacture of newsprint, and for this purpose stock is generally substantially unfilled or only contains small amounts of filler, for instance 0 to 15% and often 0 to 10% based on the dry weight of the stock. Benefits are however also achieved if the stock contains filler in amounts to give up to 30% filler in the final paper produced.
  • the process is also of value in the manufacture of board, again from similar crude pulps containing little or no filler.
  • an alternative or additional property of the low molecular weight polymer may be to improve the strength of the board and for this purpose a low molecular weight water soluble synthetic cationic dry strength resin may be used as the polymer.
  • Amphoteric polymers are particularly suitable for this purpose.
  • the amount of low molecular weight polymer is in the range 0.01 or 0.05 to 0.2%, based on the dry weight of the stock, and the optimum can be found by routine experimentation.
  • the pulp, before treatment with the low molecular weight polymer has a cationic demand (as measured by titration with the main cationic polymer) of above 400 g/t and the low molecular weight polymer is included in the stock, or ahead of the stock, in an amount to reduce the cationic demand of the thin stock to below 300 g/t before adding the main polymer.
  • the process of the invention is found to give an improvement in the performance since it can give improved pitch and/or stickies removal, improved paper quality such as opacity and linting characteristics improved wet strength or runnability during manufacture. Furthermore the performance of the process when assessed in terms of the drainage characteristics is improved by the incorporation of the second polymer, as compared to a process without that polymer, for instance a process is described in EP-A-235,893 or US-A-4,388,150.
  • Polymer A is a polymer of IV 7 dl/g formed from 75% acrylamide and 25% dimethylaminoethyl acrylate, MeCl quaternised
  • Polymer B is a modified polyethyleneimine as sold under the trade name Polymin SK.
  • a 100% mixed waste stock having a consistency of 0.5% was prepared. Drainage tests were conducted on the stock using a modified Shopper Riegler freeness tester, the time for 600 mls of backwater to drain from the stock sample being measured. The stock was subjected to shear and the drainage was measured. In one test no additions were made before or after the shear. In other tests bentonite was added after the shear and Polymer A and/or Polymer B was added before the shear. When both Polymers A and B were added, B was added considerably ahead of Polymer A.
  • the low molecular weight polymer is polymer K which is a solution polymer of about IV 1 dl/g and formed from about 20% acrylamide and 80% by weight diallyl dimethyl ammonium chloride.
  • the high molecular weight polymers are L, which is 70% acrylamide, 30% methyl chloride quaternised dimethylaminoethyl acrylate IV 8, and polymer M which is 95% acrylamide and 5% methyl chloride quaternised dimethylaminoethyl acrylate IV 11.
  • the drainage rate for each of the treated suspensions is measured, with the best results being those that have the highest drainage figure.

Landscapes

  • Paper (AREA)

Claims (7)

  1. Procédé dans lequel du papier ou du carton est fabriqué par formation d'une suspension cellulosique aqueuse dont au moins 25 % en poids sont constitués par de la pulpe mécanique, passage de la suspension par un ou plusieurs stades de cisaillement sélectionné parmi les stades de purification, mélange et pompage, addition à la suspension d'un polymère principal qui est un polymère cationique synthétique hydrosoluble de poids moléculaire élevé ayant une viscosité intrinsèque supérieure à 4 dl/g avant l'un des stades de cisaillement et addition de bentonite après ce stade de cisaillement, égouttage de la suspension pour former une feuille et séchage de la feuille, caractérisé en ce que l'égouttage est amélioré par l'addition à la suspension, avant l'addition du polymère principal, d'un polymère cationique synthétique hydrosoluble de poids moléculaire faible ayant une viscosité intrinsèque inférieure à 2 dl/g en une quantité comprise dans la plage de 0,01 à 0,2 % par rapport au poids à sec de la suspension.
  2. Procédé selon l'une quelconque des revendications précédentes, dans lequel au moins 50 % en poids de la suspension cellulosique sont constitués par de la pulpe mécanique.
  3. Procédé selon l'une quelconque des revendications précédentes, dans lequel le produit est du papier journal.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel le polymère de poids moléculaire faible a un poids moléculaire compris entre 100 000 et 500 000.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel le polymère de poids moléculaire faible est sélectionné parmi le polyéthylène-imine, des polyamines, des polymères polycyandiamideformaldéhyde, des polymères amphotères et des polymères de monomères sélectionnés parmi le chlorure de diallyldiméthylammonium, des (méth)acrylates de diallylaminoéthyle et des (méth)acrylamides de dialkylaminoalkyle.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel la suspension à laquelle le polymère de poids moléculaire faible est ajouté a une demande cationique, telle que mesurée sur le polymère cationique principal, d'au moins 400 g/t et la quantité de polymère de poids moléculaire faible ajoutée ramène ladite demande cationique à moins de 300 g/t.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel la suspension égouttée pour former le papier ou le canon est une pâte mince formée par dilution d'une pâte épaisse et le polymère principal est ajouté à la pâte mince et le polymère de poids moléculaire faible est présent dans la pâte épaisse.
EP89302842A 1988-03-28 1989-03-22 Fabrication de papier et carton Expired - Lifetime EP0335575B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89302842T ATE86693T1 (de) 1988-03-28 1989-03-22 Herstellung von papier und pappe.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB888807444A GB8807444D0 (en) 1988-03-28 1988-03-28 Production of paper & paper board
GB8807444 1988-03-28
GB888815219A GB8815219D0 (en) 1988-06-27 1988-06-27 Production of paper & paper board
GB8815219 1988-06-27

Publications (4)

Publication Number Publication Date
EP0335575A2 EP0335575A2 (fr) 1989-10-04
EP0335575A3 EP0335575A3 (en) 1990-12-12
EP0335575B1 EP0335575B1 (fr) 1993-03-10
EP0335575B2 true EP0335575B2 (fr) 2000-08-23

Family

ID=26293708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89302842A Expired - Lifetime EP0335575B2 (fr) 1988-03-28 1989-03-22 Fabrication de papier et carton

Country Status (9)

Country Link
EP (1) EP0335575B2 (fr)
JP (2) JPH026683A (fr)
KR (1) KR960002733B1 (fr)
AU (1) AU613465B2 (fr)
CA (1) CA1322435C (fr)
DE (1) DE68905208T3 (fr)
ES (1) ES2053980T5 (fr)
FI (1) FI97307C (fr)
NO (1) NO174724B (fr)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9003954L (sv) * 1990-12-11 1992-06-12 Eka Nobel Ab Saett foer framstaellning av ark- eller banformiga cellulosafiberinnehaallande produkter
US5126014A (en) * 1991-07-16 1992-06-30 Nalco Chemical Company Retention and drainage aid for alkaline fine papermaking process
US5221435A (en) * 1991-09-27 1993-06-22 Nalco Chemical Company Papermaking process
DE4311599A1 (de) * 1993-04-08 1994-10-13 Henkel Kgaa Verfahren zur Kontrolle des Absetzens klebender Verunreinigungen aus Papierstoff-Suspensionen
US5484834A (en) * 1993-11-04 1996-01-16 Nalco Canada Inc. Liquid slurry of bentonite
GB9410920D0 (en) * 1994-06-01 1994-07-20 Allied Colloids Ltd Manufacture of paper
US5810971A (en) * 1995-05-17 1998-09-22 Nalco Canada, Inc. Liquid slurry of bentonite
SE9502522D0 (sv) * 1995-07-07 1995-07-07 Eka Nobel Ab A process for the production of paper
EP0760406A3 (fr) * 1995-08-24 1997-09-17 Nalco Canada Inc Combinaison d'un poly(dadmac/acrylamide)et d'une bentonite pourle control de la poix dans des procédés de fabrication de papier
US5620629A (en) * 1995-09-28 1997-04-15 Nalco Chemical Company Colloidal silica/polyelectrolyte blends for natural water clarification
US5840158A (en) * 1995-09-28 1998-11-24 Nalco Chemical Company Colloidal silica/polyelectrolyte blends for pulp and paper applications
CA2180371A1 (fr) * 1996-02-13 1997-08-14 Brian Frederic Satterfield Production de papier charge et compositions pour utilisation dans ledit papier charge
GB9603909D0 (en) 1996-02-23 1996-04-24 Allied Colloids Ltd Production of paper
DE19627553A1 (de) * 1996-07-09 1998-01-15 Basf Ag Verfahren zur Herstellung von Papier und Karton
US6113741A (en) * 1996-12-06 2000-09-05 Eka Chemicals Ab Process for the production of paper
DE19654390A1 (de) * 1996-12-27 1998-07-02 Basf Ag Verfahren zur Herstellung von Papier
DE19715832A1 (de) 1997-04-16 1998-10-22 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton
KR100403839B1 (ko) 1998-04-27 2003-11-01 악조 노벨 엔.브이. 제지 방법
US7306700B1 (en) 1998-04-27 2007-12-11 Akzo Nobel Nv Process for the production of paper
EP0953680A1 (fr) * 1998-04-27 1999-11-03 Akzo Nobel N.V. Procédé pour la fabrication du papier
US6083997A (en) * 1998-07-28 2000-07-04 Nalco Chemical Company Preparation of anionic nanocomposites and their use as retention and drainage aids in papermaking
WO2000017450A1 (fr) * 1998-09-22 2000-03-30 Calgon Corporation Melange de silice et de colloide acide dans un systeme microparticulaire utilise en papeterie
TW527457B (en) 1999-11-08 2003-04-11 Ciba Spec Chem Water Treat Ltd Manufacture of paper and paperboard
AU2001288175A1 (en) 2000-09-20 2002-04-02 Akzo Nobel N.V. A process for the production of paper
MY140287A (en) 2000-10-16 2009-12-31 Ciba Spec Chem Water Treat Ltd Manufacture of paper and paperboard
JP3819731B2 (ja) * 2000-11-30 2006-09-13 ハイモ株式会社 中性新聞用紙の抄紙方法
DE20220979U1 (de) 2002-08-07 2004-10-14 Basf Ag Papierprodukt
GB0402470D0 (en) 2004-02-04 2004-03-10 Ciba Spec Chem Water Treat Ltd Production of a fermentation product
GB0402469D0 (en) 2004-02-04 2004-03-10 Ciba Spec Chem Water Treat Ltd Production of a fermentation product
JP4517662B2 (ja) * 2004-02-10 2010-08-04 栗田工業株式会社 紙及び板紙の製造方法
DE102004044379B4 (de) 2004-09-10 2008-01-10 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton und Verwendung einer Retentionsmittelkombination
DE102004058587A1 (de) 2004-12-03 2006-06-14 Basf Ag Verfahren zur Herstellung von Papieren mit hohen Flächengewichten
US7955473B2 (en) 2004-12-22 2011-06-07 Akzo Nobel N.V. Process for the production of paper
DE102004063005A1 (de) 2004-12-22 2006-07-13 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton
US20060254464A1 (en) 2005-05-16 2006-11-16 Akzo Nobel N.V. Process for the production of paper
JP5140000B2 (ja) 2005-12-30 2013-02-06 アクゾ ノーベル ナムローゼ フェンノートシャップ 紙の製造方法
RU2009119355A (ru) * 2006-10-25 2010-11-27 Циба Холдинг Инк. (Ch) Способ повышения прочности бумаги
US7758934B2 (en) 2007-07-13 2010-07-20 Georgia-Pacific Consumer Products Lp Dual mode ink jet paper
JP5190877B2 (ja) * 2008-04-04 2013-04-24 ハイモ株式会社 紙の欠陥発生抑制方法
JP5584505B2 (ja) * 2010-03-30 2014-09-03 日本製紙株式会社 紙の製造方法
CA2862095C (fr) 2012-02-01 2017-04-11 Basf Se Procede pour la fabrication de papier et de carton
EP2820189B2 (fr) 2012-03-01 2024-05-15 Basf Se Procédé de fabrication de papier et de carton
US10113270B2 (en) 2013-01-11 2018-10-30 Basf Se Process for the manufacture of paper and paperboard
JP6929899B2 (ja) * 2018-06-15 2021-09-01 栗田工業株式会社 紙及び紙板の製造方法
WO2019239819A1 (fr) * 2018-06-15 2019-12-19 栗田工業株式会社 Procédé de production de papier et de carton

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512868A (en) * 1978-07-12 1980-01-29 Mitsubishi Paper Mills Ltd Production of neutral paper
EP0017353B2 (fr) * 1979-03-28 1992-04-29 Ciba Specialty Chemicals Water Treatments Limited Production de papier et de carton
DE3541163A1 (de) * 1985-11-21 1987-05-27 Basf Ag Verfahren zur herstellung von papier und karton
GB8602121D0 (en) * 1986-01-29 1986-03-05 Allied Colloids Ltd Paper & paper board
US4795531A (en) * 1987-09-22 1989-01-03 Nalco Chemical Company Method for dewatering paper
JPH0192498A (ja) * 1987-10-02 1989-04-11 Hokuetsu Paper Mills Ltd 中性紙の製造方法

Also Published As

Publication number Publication date
JPH026683A (ja) 1990-01-10
FI891465A (fi) 1989-09-29
JPH0529719B2 (fr) 1993-05-06
DE68905208T3 (de) 2001-02-15
FI97307B (fi) 1996-08-15
FI97307C (fi) 1997-11-11
DE68905208D1 (de) 1993-04-15
DE68905208T2 (de) 1993-10-07
JPH05239800A (ja) 1993-09-17
NO891301D0 (no) 1989-03-28
NO174724B (no) 1994-03-14
KR960002733B1 (ko) 1996-02-26
EP0335575A2 (fr) 1989-10-04
NO891301L (no) 1989-09-29
AU3174989A (en) 1989-09-28
FI891465A0 (fi) 1989-03-28
EP0335575A3 (en) 1990-12-12
CA1322435C (fr) 1993-09-28
AU613465B2 (en) 1991-08-01
ES2053980T5 (es) 2000-12-16
ES2053980T3 (es) 1994-08-01
KR890014836A (ko) 1989-10-25
EP0335575B1 (fr) 1993-03-10

Similar Documents

Publication Publication Date Title
EP0335575B2 (fr) Fabrication de papier et carton
US5501774A (en) Production of filled paper
US5338407A (en) Enhancement of paper dry strength by anionic and cationic guar combination
FI127348B (en) Strength substance, its use and method for increasing strength properties of paper
US6228217B1 (en) Strength of paper made from pulp containing surface active, carboxyl compounds
US4969976A (en) Pulp dewatering process
EP0227465B1 (fr) Papier chargé
US5755930A (en) Production of filled paper and compositions for use in this
US5827398A (en) Production of filled paper
US7918965B2 (en) Method for the production of paper, cardboard and card
AU619599B2 (en) Dry strength additive for paper
US8029647B2 (en) Method for the production of paper, paperboard and cardboard
EP0960236B1 (fr) Remplissage de lumiere de fibres cellulosiques par une charge minerale en vue de la fabrication de papier
US9765482B2 (en) Manufacture of paper and paperboard containing wood free pulp
US20030106659A1 (en) Method for improving printability and coatabililty of paper and board
US6719881B1 (en) Acid colloid in a microparticle system used in papermaking
NZ280717A (en) Paper furnish having a high molecular weight anionic polymer and a modified lignin to enhance drainage, retention, formation, pressing, and drying of the furnish
FI108060B (fi) Täytetyn paperin valmistus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

RHK1 Main classification (correction)

Ipc: D21H 23/76

17P Request for examination filed

Effective date: 19910531

17Q First examination report despatched

Effective date: 19920410

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 86693

Country of ref document: AT

Date of ref document: 19930315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 68905208

Country of ref document: DE

Date of ref document: 19930415

ITF It: translation for a ep patent filed
ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: EKA NOBEL AB

Effective date: 19931204

26 Opposition filed

Opponent name: S.N.F.

Effective date: 19931210

Opponent name: EKA NOBEL AB

Effective date: 19931204

26 Opposition filed

Opponent name: SUED-CHEMIE AG

Effective date: 19931209

Opponent name: S.N.F.

Effective date: 19931210

Opponent name: EKA NOBEL AB

Effective date: 19931204

NLR1 Nl: opposition has been filed with the epo

Opponent name: EKA NOBEL AB.

NLR1 Nl: opposition has been filed with the epo

Opponent name: S.N.F.

Opponent name: SUD-CHEMIE AG

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2053980

Country of ref document: ES

Kind code of ref document: T3

EAL Se: european patent in force in sweden

Ref document number: 89302842.3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: EKA CHEMICALS AB PATENT DEPARTMENT * 931209 SUED-C

Effective date: 19931204

NLR1 Nl: opposition has been filed with the epo

Opponent name: S.N.F.

Opponent name: EKA CHEMICALS AB PATENT DEPARTMENT

Opponent name: SUED-CHEMIE AG

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

26 Opposition filed

Opponent name: SUED-CHEMIE AG

Effective date: 19931209

Opponent name: EKA CHEMICALS AB

Effective date: 19931204

Opponent name: S.N.F.

Effective date: 19931210

R26 Opposition filed (corrected)

Opponent name: SUED-CHEMIE AG * 931210 S.N.F.

Effective date: 19931209

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

NLR1 Nl: opposition has been filed with the epo

Opponent name: EKA CHEMICALS AB

Opponent name: S.N.F.

Opponent name: SUED-CHEMIE AG

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

RAP4 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Free format text: ALLIED COLLOIDS LIMITED TRANSFER- CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED

27A Patent maintained in amended form

Effective date: 20000823

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: MAINTIEN DU BREVET DONT L'ETENDUE A ETE MODIFIEE

NLR2 Nl: decision of opposition
ITF It: translation for a ep patent filed
ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Kind code of ref document: T5

Effective date: 20000920

NLT1 Nl: modifications of names registered in virtue of documents presented to the patent office pursuant to art. 16 a, paragraph 1

Owner name: CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20080307

Year of fee payment: 20

Ref country code: CH

Payment date: 20080213

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080220

Year of fee payment: 20

Ref country code: SE

Payment date: 20080221

Year of fee payment: 20

Ref country code: GB

Payment date: 20080222

Year of fee payment: 20

Ref country code: IT

Payment date: 20080308

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20080331

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080213

Year of fee payment: 20

Ref country code: DE

Payment date: 20080220

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20080520

Year of fee payment: 20

BE20 Be: patent expired

Owner name: *CIBA SPECIALTY CHEMICALS WATER TREATMENTS LTD

Effective date: 20090322

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20090321

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090322

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20090322

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090321

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090323