EP0223223A1 - Procédé de fabrication de papier et de carton - Google Patents

Procédé de fabrication de papier et de carton Download PDF

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Publication number
EP0223223A1
EP0223223A1 EP86115915A EP86115915A EP0223223A1 EP 0223223 A1 EP0223223 A1 EP 0223223A1 EP 86115915 A EP86115915 A EP 86115915A EP 86115915 A EP86115915 A EP 86115915A EP 0223223 A1 EP0223223 A1 EP 0223223A1
Authority
EP
European Patent Office
Prior art keywords
weight
paper
acrylamide
paper stock
pulp
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.)
Granted
Application number
EP86115915A
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German (de)
English (en)
Other versions
EP0223223B1 (fr
Inventor
Rudolf Lorz
Friedrich Dr. Linhart
Werner Auhorn
Manfred Matz
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BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
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Priority to AT86115915T priority Critical patent/ATE50814T1/de
Publication of EP0223223A1 publication Critical patent/EP0223223A1/fr
Application granted granted Critical
Publication of EP0223223B1 publication Critical patent/EP0223223B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • D21H17/375—Poly(meth)acrylamide
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
    • 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
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
    • 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
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/56—Polyamines; Polyimines; Polyester-imides
    • 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

Definitions

  • the present invention has for its object to provide a process for the production of paper and cardboard, according to which one can produce papers with good formation and surface quality and which are well printable.
  • All paper grades can be produced using these processes, e.g. Papers for newspaper printing (high-pressure / offset printing), so-called medium-fine writing and printing papers, gravure printing papers and also lightweight coating base papers. Wood pulp, thermomechanical material (TMP), chemo-thermomechanical material (CTMP), pressure sanding (PGW), and sulphite and sulphate pulp, which can be short or long fibers, are used as the main raw material components for the production of such papers.
  • TMP thermomechanical material
  • CTMP chemo-thermomechanical material
  • PGW pressure sanding
  • sulphite and sulphate pulp which can be short or long fibers
  • an aqueous slurry of fiber and filler is first prepared.
  • the concentration of the aqueous pulp is initially 2.5 to 5% by weight and comprises both the content of fibrous materials, fine materials and fillers.
  • a pulp whose substance concentration is in the range from 2.5 to 5% by weight is added in process section a) from 0.1 to 2% by weight, preferably from 0.5 to 1.5% by weight. an activated bentonite. Then the paper stock concentration is adjusted to a value of 0.3 to 2% by weight by dilution with water.
  • the activated bentonite is added to the aqueous pulp, based on dry paper stock, in an amount of 0.1 to 2, preferably 0.5 to 1.5% by weight.
  • the bentonite can be added either in solid form or, preferably, in the form of an aqueous slurry.
  • the cationic polyelectrolytes of component b) have a high charge density.
  • These compounds are, for example, the following polymers: polyethyleneimines, polyamines with a molecular weight of more than 50,000, polyamidoamines modified by grafting ethyleneimine, polyamidoamines, polyetheramines, polyvinylamines, modified polyvinylamines, polyalkylamines, polyvinylimidazoles, polyvinylpyridines, polyvinylimidazolines, Polyvinyltetrahydropyridines, polydialkylaminoalkyl vinyl ethers, polydialkylaminoalkyl (meth) acrylates, polydialkylaminoalkyl (meth) acrylamides in protonated or quaternized form.
  • Other suitable compounds of this type are polydiallyldialkylammonium halides, in particular polydiallyldimethylammonium chloride.
  • the polyelectrolytes are
  • component b) are also suitable as component b) are the condensation products known from DE-AS 17 71 814, which are crosslinking products of polyamidoamines with bifunctional crosslinking agents.
  • Cationic polyelectrolytes with a high charge density are also obtained by condensation of di- and polyamines, such as ethylenediamine, diethylenetriamine, triethylenetetramine and the higher homologues with crosslinking agents, such as dichloroethane, epichlorohydrin, and the reaction products of polyethylene glycols and epichlorohydrin in a molar ratio of 1: at least 2 or by Reaction of primary and secondary amines, such as methylamine or dimethylamine with epichlorohydrin, dichloroethane, dichloropropane or dichlorobutane.
  • di- and polyamines such as ethylenediamine, diethylenetriamine, triethylenetetramine and the higher homologues with crosslinking agents, such as dichloroethane, epichlorohydrin
  • crosslinking agents such as dichloroethane, epichlorohydrin
  • crosslinking agents such as dichloroethane, epichlorohydrin
  • Polyvinylamines are prepared by polymerizing N-vinylformamide and hydrolyzing the resulting polymers by the action of acids or bases, the formyl groups being split off from the polymer. Those polymers which contain copolymerized N-vinylformamide and vinylamine units are also very effective. Such polymers are produced by partial hydrolysis of polyvinylformamides.
  • cationic polyelectrolytes b) di-C1 to C3-alkylamino-C2 to C6-alkyl (meth) acrylates, di-C1-to C3-alkylamino-C2 to C6-alkyl (meth) acrylamides and dialkylaminoalkyl vinyl ether.
  • Another class of compounds belonging to component b) are polymerized diallyldi-C1-C3-alkylammonium halides, in particular polydi-allyldimethylammonium chloride.
  • Preferably used as compounds of component b) are polyethyleneimine, water-soluble crosslinked condensation products based on polyamidoamines, polyvinylamines, polydiallylammonium chloride and / or at least 10 mol% of hydrolyzed poly-N-vinylformamides.
  • the molecular weight of the cationic polyelectrolytes of component b) is in the range from 50,000 to 3,000,000, preferably 200,000 to 2,000,000. Polymers of this type are known and the majority are commercially available.
  • the charge density of the cationic polyelectrolytes at pH 4.5 is preferably in the range from 5 to 20 meq / g polyelectrolyte.
  • the pulp as component c) is metered in with a high molecular weight polymer based on acrylamide or methacrylamide.
  • This polymer is also mixed with the paper stock, which is then dewatered in the usual way on a sieve. Based on dry paper stock, 0.003 to 0.03, preferably 0.005 to 0.015,% by weight of a high molecular weight polymer of component c) is used.
  • This group of polymers includes the homopolymers of acrylamide and methacrylamide and the copolymers of the two monomers with anionic or cationic monomers.
  • the homopolymers and copolymers have an average mass molecular weight (determined by the light scattering method) of 1 million to 20 million.
  • Anionically modified polymers of acrylamide or methacrylamide are obtained by copolymerizing acrylamide or methacrylamide with monoethylenically unsaturated C3- to C5-carboxylic acids, which may or may not be partially or completely neutralized, or by partial hydrolysis of the amide groups of an acrylamide or methacrylamide homopolymer.
  • the anionically modified polyacrylamides mainly the copolymers of acrylamide and acrylic acid are used.
  • the copolymerized acrylic acid content in the copolymer can be 5 to 80% by weight.
  • cationic modification of the (meth) acrylamide polymers use is made, for example, of the C1- to C2-alkylamino-C2- to C6-alkyl (meth) acrylates, for example diethylaminoethyl acrylate, dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, dimethylaminopropyl acrylate, dimethylaminobutyl acrylate and methacrylate, dimethylacrylate, dimethyl acrylate, dimethyl acrylate, dimethyl acrylate, Monomers in the form of the salt with hydrochloric acid or sulfuric acid or in quaternized form, for example quaternized by reaction with methyl chloride, dimethyl sulfate or benzyl chloride, are subjected to the copolymerization.
  • the C1- to C2-alkylamino-C2- to C6-alkyl (meth) acrylates for example diethylamino
  • Suitable cationic monomers for modifying the (meth) acrylamide polymers are dialkylaminoalkyl (meth) acrylamides, dialkylaminoalkyl vinyl ethers, N-vinylimidazoles, N-vinylpyridine and diallyldimethylammonium chloride.
  • polyacrylamide, copolymers of acrylamide and acrylic acid, copolymers of acrylamide and dimethylaminoethyl acrylate, copolymers of acrylamide and diethylaminoethyl acrylate, copolymers of acrylamide and N-vinylimidazoline, copolymers of acrylamide and 2-methyl-1-vinylimidazoline are preferably used for the process according to the invention and copolymers of acrylamide and 2-phenyl-1-vinylimidazoline.
  • the cationic monomers are used in neutralized or quaternized form.
  • the two classes of compounds then differ in that the compounds c) have a molecular weight which is at least 1 million higher than the molecular weight of the compounds b).
  • Another distinguishing feature of the two connection classes b) and c) lies in the charge density.
  • the compounds c) - if they are cationically modified - have a charge density of at most 3.5 meq / g polyelectrolyte (measured at pH 4.5).
  • Vinylsulfonic acid, acrylamidopropanesulfonic acids and / or their alkali metal, ammonium or amine salts can also be used for the anionic modification of the polyacrylamides.
  • the starting point is an aqueous pulp, the concentration of which is 2.5 to 5% by weight.
  • the activated bentonite is added in the amounts indicated above.
  • the bentonite is preferably added in the form of a 3 to 6% aqueous dispersion.
  • the pulp containing the bentonite is then diluted with water.
  • the white water is preferably used for this in the production plant.
  • At least one compound according to b) is then metered into the diluted stock suspension, for example into the line at the outlet of the mixing pump, in the amount specified above. Due to the flow conditions in the line system, there is sufficient mixing of the cationic polymer with the paper stock.
  • the high molecular weight polymer of component c) can be added.
  • compounds c) are added before the headbox, advantageously at a point between the pressure sorter and the headbox.
  • the polymers b) and c) are preferably metered in in the form of dilute aqueous solutions. Due to the auxiliary system used, paper production can take place in closed water cycles. Paper with good printability is obtained which also has good printability in the offset process.
  • Determination of the dewatering time 1 l of the pulp slurry to be tested is dewatered in a Schopper-Riegler test device. The time that is determined for different outlet volumes is evaluated as a criterion for the drainage rate of the substance suspension examined in each case. The drainage times were determined in all cases specified here after the passage of 150, 200 and 250 ml of water.
  • the retention was checked by determining the solids content in 250 ml of a filtrate obtained by dewatering the fiber slurry to be tested in a Schopper-Riegler device.
  • Polyelectrolyte 1 (component b) This was a polyamidoamine from adipic acid and diethylenetriamine, which was grafted with ethyleneimine and crosslinked with a polyalkylene oxide, the terminal OH groups of which had been reacted with epichlorohydrin.
  • Such a product is known from Example 1 of DE-PS 24 34 816, it has a charge density of 12.2 meq / g (measured at pH 4.5).
  • thermomechanical substance TMP
  • concentration of 3.2% is produced in a 20 l container.
  • the pH of the stock suspension is 5.7.
  • the paper fiber suspension prepared in this way is stirred and mixed with a 5% strength aqueous slurry of a commercially available sodium bentonite, so that the amount of bentonite, based on paper stock, is 0.5%. After homogenization, the substance is diluted to a concentration of 0.85% by adding water.
  • the headbox concentration is 6.84 g / l
  • the white water contains 2.32 g / l solids.
  • the First Pass Retention (FPR) is 66.1%.
  • the production speed is 577 m / min. You get 6.8 t of paper per hour.
  • Example 1 is repeated with the exception that the polyelectrolyte 1 is omitted.
  • the paper flocculates so strongly that perfect sheet formation is not guaranteed.
  • the formation and surface quality of the sheet is insufficient for the printing requirements.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
EP86115915A 1985-11-21 1986-11-17 Procédé de fabrication de papier et de carton Expired - Lifetime EP0223223B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115915T ATE50814T1 (de) 1985-11-21 1986-11-17 Verfahren zur herstellung von papier und karton.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3541163 1985-11-21
DE19853541163 DE3541163A1 (de) 1985-11-21 1985-11-21 Verfahren zur herstellung von papier und karton

Publications (2)

Publication Number Publication Date
EP0223223A1 true EP0223223A1 (fr) 1987-05-27
EP0223223B1 EP0223223B1 (fr) 1990-03-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115915A Expired - Lifetime EP0223223B1 (fr) 1985-11-21 1986-11-17 Procédé de fabrication de papier et de carton

Country Status (10)

Country Link
US (1) US4749444A (fr)
EP (1) EP0223223B1 (fr)
JP (1) JPS62125098A (fr)
AT (1) ATE50814T1 (fr)
AU (1) AU578404B2 (fr)
CA (1) CA1278403C (fr)
DE (2) DE3541163A1 (fr)
FI (1) FI85397C (fr)
NO (1) NO168593C (fr)
NZ (1) NZ217951A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335575A2 (fr) * 1988-03-28 1989-10-04 Ciba Specialty Chemicals Water Treatments Limited Fabrication de papier et carton
EP0468558A2 (fr) * 1990-07-03 1992-01-29 Laporte Industries Limited Production de papier et de carton
WO1993003223A1 (fr) * 1991-07-26 1993-02-18 Snf Procede de traitement des eaux, notamment pour ameliorer la retention dans la fabrication des papiers ou cartons
EP0608986A1 (fr) * 1993-01-26 1994-08-03 Ciba Specialty Chemicals Water Treatments Limited Production de papier chargé
EP0752496A2 (fr) * 1995-07-07 1997-01-08 Eka Chemicals AB Procédé de production de papier
GB2309280A (en) * 1996-01-16 1997-07-23 Monroe Auto Equipment Co Shock absorber
WO1997033041A1 (fr) * 1996-03-08 1997-09-12 Allied Colloids Limited Compositions a base d'argile et leur utilisation dans la fabrication du papier
WO1997033040A1 (fr) * 1996-03-08 1997-09-12 Allied Colloids Limited Activation d'argiles gonflantes et procedes d'utilisation des argiles activees
WO1998001623A1 (fr) * 1996-07-09 1998-01-15 Basf Aktiengesellschaft Procede de fabrication de papier et de carton
WO2001034910A1 (fr) * 1999-11-08 2001-05-17 Ciba Specialty Chemicals Water Treatments Limited Fabrication de papier et de carton
EP1529133A1 (fr) 2002-08-07 2005-05-11 Basf Aktiengesellschaft Procede pour produire du papier, du carton-pate et du carton
WO2006027121A1 (fr) * 2004-09-07 2006-03-16 Ciba Specialty Chemicals Water Treatments Limited Traitement de suspensions epaisses huileuses
DE102008000811A1 (de) 2007-03-29 2008-10-09 Basf Se Verfahren zur Herstellung von Papier
WO2010020551A1 (fr) * 2008-08-18 2010-02-25 Basf Se Procédé pour améliorer la résistance à sec du papier, du carton-pâte et du carton
US7998314B2 (en) 2004-12-22 2011-08-16 Basf Aktiengesellschaft Method for the production of paper, cardboard and card

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DE3783772T2 (de) * 1987-06-22 1993-05-13 Nippon Catalytic Chem Ind Verfahren zur herstellung kationischer wasserloeschlicher harze sowie mittel zur behandlung von wasser.
JPH0192498A (ja) * 1987-10-02 1989-04-11 Hokuetsu Paper Mills Ltd 中性紙の製造方法
JPH01174700A (ja) * 1987-12-28 1989-07-11 Sanyo Kokusaku Pulp Co Ltd 中性抄紙方法
US4964955A (en) * 1988-12-21 1990-10-23 Cyprus Mines Corporation Method of reducing pitch in pulping and papermaking operations
US5071512A (en) * 1988-06-24 1991-12-10 Delta Chemicals, Inc. Paper making using hectorite and cationic starch
GB8828899D0 (en) * 1988-12-10 1989-01-18 Laporte Industries Ltd Paper & paperboard
JPH0345799A (ja) * 1989-07-11 1991-02-27 Mitsubishi Paper Mills Ltd 紙の製造方法
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US5185062A (en) * 1991-01-25 1993-02-09 Nalco Chemical Company Papermaking process with improved retention and drainage
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US5453310A (en) 1992-08-11 1995-09-26 E. Khashoggi Industries Cementitious materials for use in packaging containers and their methods of manufacture
US5830548A (en) 1992-08-11 1998-11-03 E. Khashoggi Industries, Llc Articles of manufacture and methods for manufacturing laminate structures including inorganically filled sheets
US5582670A (en) 1992-08-11 1996-12-10 E. Khashoggi Industries Methods for the manufacture of sheets having a highly inorganically filled organic polymer matrix
NZ255666A (en) 1992-08-11 1997-04-24 Khashoggi E Ind Food/drink containers formed from a hydraulically settable binder, water and a rheology-modifying agent
US5631097A (en) 1992-08-11 1997-05-20 E. Khashoggi Industries Laminate insulation barriers having a cementitious structural matrix and methods for their manufacture
US5508072A (en) 1992-08-11 1996-04-16 E. Khashoggi Industries Sheets having a highly inorganically filled organic polymer matrix
US5800647A (en) 1992-08-11 1998-09-01 E. Khashoggi Industries, Llc Methods for manufacturing articles from sheets having a highly inorganically filled organic polymer matrix
US5506046A (en) 1992-08-11 1996-04-09 E. Khashoggi Industries Articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix
US5928741A (en) 1992-08-11 1999-07-27 E. Khashoggi Industries, Llc Laminated articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix
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DK169728B1 (da) 1993-02-02 1995-01-23 Stein Gaasland Fremgangsmåde til frigørelse af cellulosebaserede fibre fra hinanden i vand og støbemasse til plastisk formning af celluloseholdige fiberprodukter
DE4493351T1 (de) * 1993-05-10 1996-08-22 Grace W R & Co Papierherstellungsverfahren
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US5431783A (en) * 1993-07-19 1995-07-11 Cytec Technology Corp. Compositions and methods for improving performance during separation of solids from liquid particulate dispersions
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US5989696A (en) * 1996-02-13 1999-11-23 Fort James Corporation Antistatic coated substrates and method of making same
US6113741A (en) * 1996-12-06 2000-09-05 Eka Chemicals Ab Process for the production of paper
US6099689A (en) * 1998-02-17 2000-08-08 Nalco Chemical Company Production of paper and board products with improved retention, drainage and formation
US5942087A (en) * 1998-02-17 1999-08-24 Nalco Chemical Company Starch retention in paper and board production
KR100403838B1 (ko) 1998-04-27 2003-11-01 악조 노벨 엔.브이. 제지 방법
US6183650B1 (en) 1998-05-04 2001-02-06 Minerals Technologies Inc. Synthetic mineral microparticles and retention aid and water treatment systems and methods using such particles
CA2336970A1 (fr) * 1998-07-10 2000-01-20 Calgon Corporation Systeme a microparticules intervenant dans la fabrication du papier
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US6572736B2 (en) 2000-10-10 2003-06-03 Atlas Roofing Corporation Non-woven web made with untreated clarifier sludge
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EP0335575A2 (fr) * 1988-03-28 1989-10-04 Ciba Specialty Chemicals Water Treatments Limited Fabrication de papier et carton
EP0468558A2 (fr) * 1990-07-03 1992-01-29 Laporte Industries Limited Production de papier et de carton
EP0468558A3 (en) * 1990-07-03 1993-07-14 Vinings Industries Inc. Production of paper and paperboard
WO1993003223A1 (fr) * 1991-07-26 1993-02-18 Snf Procede de traitement des eaux, notamment pour ameliorer la retention dans la fabrication des papiers ou cartons
EP0608986A1 (fr) * 1993-01-26 1994-08-03 Ciba Specialty Chemicals Water Treatments Limited Production de papier chargé
US5501774A (en) * 1993-01-26 1996-03-26 Allied Colloids Limited Production of filled paper
US5858174A (en) * 1995-07-07 1999-01-12 Eka Chemicals Ab Process for the production of paper
EP0752496A2 (fr) * 1995-07-07 1997-01-08 Eka Chemicals AB Procédé de production de papier
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WO1997033040A1 (fr) * 1996-03-08 1997-09-12 Allied Colloids Limited Activation d'argiles gonflantes et procedes d'utilisation des argiles activees
WO1998001623A1 (fr) * 1996-07-09 1998-01-15 Basf Aktiengesellschaft Procede de fabrication de papier et de carton
WO2001034910A1 (fr) * 1999-11-08 2001-05-17 Ciba Specialty Chemicals Water Treatments Limited Fabrication de papier et de carton
EP1529133A1 (fr) 2002-08-07 2005-05-11 Basf Aktiengesellschaft Procede pour produire du papier, du carton-pate et du carton
US7306701B2 (en) 2002-08-07 2007-12-11 Basf Aktiengesellschaft Production of paper, board and cardboard
WO2006027121A1 (fr) * 2004-09-07 2006-03-16 Ciba Specialty Chemicals Water Treatments Limited Traitement de suspensions epaisses huileuses
US7998314B2 (en) 2004-12-22 2011-08-16 Basf Aktiengesellschaft Method for the production of paper, cardboard and card
DE102008000811A1 (de) 2007-03-29 2008-10-09 Basf Se Verfahren zur Herstellung von Papier
WO2010020551A1 (fr) * 2008-08-18 2010-02-25 Basf Se Procédé pour améliorer la résistance à sec du papier, du carton-pâte et du carton
US8404083B2 (en) 2008-08-18 2013-03-26 Basf Se Process for increasing the dry strength of paper, board and cardboard

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CA1278403C (fr) 1991-01-02
EP0223223B1 (fr) 1990-03-07
NO168593C (no) 1992-03-11
NZ217951A (en) 1988-10-28
NO864644L (no) 1987-05-22
DE3541163A1 (de) 1987-05-27
JPS62125098A (ja) 1987-06-06
DE3669336D1 (de) 1990-04-12
JPH0159399B2 (fr) 1989-12-18
NO864644D0 (no) 1986-11-20
US4749444A (en) 1988-06-07
FI85397B (fi) 1991-12-31
FI864294A0 (fi) 1986-10-23
AU578404B2 (en) 1988-10-20
FI864294A (fi) 1987-05-22
FI85397C (fi) 1992-04-10
ATE50814T1 (de) 1990-03-15
AU6397786A (en) 1987-05-28
NO168593B (no) 1991-12-02

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