EP0910701A1 - Procede de fabrication de papier et de carton - Google Patents

Procede de fabrication de papier et de carton

Info

Publication number
EP0910701A1
EP0910701A1 EP97930506A EP97930506A EP0910701A1 EP 0910701 A1 EP0910701 A1 EP 0910701A1 EP 97930506 A EP97930506 A EP 97930506A EP 97930506 A EP97930506 A EP 97930506A EP 0910701 A1 EP0910701 A1 EP 0910701A1
Authority
EP
European Patent Office
Prior art keywords
polymers
weight
cationic
water
units
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
EP97930506A
Other languages
German (de)
English (en)
Other versions
EP0910701B1 (fr
Inventor
Rainer Dyllick-Brenzinger
Hubert Meixner
Friedrich Linhart
Dietmar MÖNCH
Klaus-Dieter Gerber
Bernd Dirks
Peter Baumann
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.)
BASF SE
Original Assignee
BASF SE
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
Application filed by BASF SE filed Critical BASF SE
Publication of EP0910701A1 publication Critical patent/EP0910701A1/fr
Application granted granted Critical
Publication of EP0910701B1 publication Critical patent/EP0910701B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H23/00Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/04Addition to the pulp; After-treatment of added substances in the pulp
    • D21H23/06Controlling the addition
    • D21H23/14Controlling the addition by selecting point of addition or time of contact between components
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/21Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24Polysaccharides
    • D21H17/28Starch
    • D21H17/29Starch cationic
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/33Synthetic macromolecular compounds
    • D21H17/34Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D21H17/375Poly(meth)acrylamide
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/33Synthetic macromolecular compounds
    • D21H17/34Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45Nitrogen-containing groups
    • D21H17/455Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20Macromolecular organic compounds
    • D21H17/33Synthetic macromolecular compounds
    • D21H17/46Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54Synthetic 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
    • D21H17/56Polyamines; Polyimines; Polyester-imides
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP 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
    • D21H17/00Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63Inorganic compounds
    • D21H17/67Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Definitions

  • the invention relates to a process for the production of paper and cardboard by dewatering pulps, with sheet formation and drying the leaves, the pulps being successively mixed with two different water-soluble, cationic polymers, then subjected to at least one shear stage and then by adding bentomite, colloidal silica or clay can be flocked.
  • the method described at the outset is known from EP-A 0 335 575.
  • the pulp is first mixed with a low molecular weight, water-soluble, cationic polymer and then with a high molecular weight, water-soluble cationic polymer.
  • the low molecular weight water-soluble cationic polymers have a molar mass below 500,000.
  • Suitable low molecular weight cationic polymers are, for example, polyethylene resin, polyammine, polycyanediamide, formaldehyde condensates and polymers of diallyldimethylammonium chloride, dialkylaminoalkyl (meth) acrylates and dialkylammoalkyl (meth) acrylamides
  • Cular cationic polymers have molar masses of more than 500,000. These polymers are the high molecular weight retention agents commonly used in papermaking, such as cationic polyacrylamides.
  • the object of the invention is to further increase the dewatering speed and thus the production speed in papermaking.
  • the object is achieved according to the invention with a process for the production of paper and cardboard by dewatering pulps, with sheet formation and drying of the sheets, the pulps being successively mixed with two different water-soluble, cationic polymers, then subjected to at least one shear stage and then by adding bentomite , colloidal pebble acidic or clay can be flocculated when you first use water-soluble cat ionic polymers
  • b) uses cationic polyacrylamides, polymers containing cationic starch or vinylamine units, the molecular weights M w of the polymers each being at least 4 million.
  • polymers of group a) with a molecular weight M w of more than 500,000, preferably more than 700,000 are suitable.
  • the polymers can be used in the manufacture of paper in the form of the free bases or as salts with organic or inorganic acids.
  • Polyethylene blocks of such a high molecular weight are prepared by known processes by polymerizing ethyleneimine in aqueous solution in the presence of acidic catalysts. Products of this type are commercially available. They usually have a broad molar mass distribution. Particularly effective are those polyethylene resins which can be obtained as retentate by ultrafiltration of the polyethylene resin in question. In the case of ultrafiltration on membranes with exclusion limits of at least 500,000, for example 5 to 40% by weight of the polyethylene imm used is separated off as permeate.
  • Suitable polymers of group a) are vinylamine unit-containing polymers having a molecular weight M w of 5000 to 3 million polymers of this type are obtainable by polymerizing N -vinylformamide, if appropriate in the presence of other monomers copolymerizable therewith, and the Then partially or completely hydrolyzed polymers by splitting off the formyl group from the polymerized vinylformamide units to form vinylamine units.
  • Partially hydrolyzed homopolymers of N-vinylformamide are known, for example, from EP-B-0 071 050.
  • the partial described therein hydrolyzed homopolymers of N-vinylformamide contain V ylamm and N-Vinylformamid units in empolymerized form.
  • polymers are also suitable in which the degree of hydrolysis is up to 100%.
  • suitable polymers of component a) containing vinylamine units are the hydrolyzed copolymers of N vinyl ormamide known from EP-B-0 216 387. They are obtainable by, for example, copolymerizing N vinylformamide with other monoethyl unsaturated monomers and then partially or completely hydrolyzing the copolymers. The hydrolysis takes place in the presence of acids, bases or also enzymatically. During the hydrolysis, the n-Vmylformamide units which have been polymerized in form hydrolysis units by splitting off formyl groups.
  • Suitable comonomers are, for example, vinyl formate, vinyl acetate, vinyl propiona, C - to Cg alkyl vinyl ether, monoethyl-unsaturated C 3 to C 8 carboxylic acids, their esters, nitriles, amides and, if available, also the anhydrides, N-Vmylurea, N-Vmylimidazoles and N-vinylimidazolines.
  • copolymers contain carboxylic acids in a polymerized form
  • the hydrolysis of the N-vinylformamide groups gives rise to amphoteric copolymers whose content of vinyl amine units is greater than that of empolymerized units of ethylenically unsaturated carboxylic acids, so that these copolymers carry a cationic excess charge.
  • ethylenically unsaturated carboxylic acids are acrylic acid, methacrylic acid, dimethylacrylic acid, ethacrylic acid, crotonic acid, vylacetic acid, allylic acetic acid, maleic acid, fumaric acid, citraconic acid and itaconic acid and their respective esters, anhydrides, amides and nitriles.
  • Anhydrides which are preferably used are, for example, maleic anhydride, ci raconic anhydride and itaconic anhydride.
  • Suitable comonomers for the copolymerization with N-vinylformamide are esters which are preferably derived from alcohols having 1 to 6 carbon atoms, such as methyl acrylate, methyl ethacrylate, ethyl acrylate, ethyl methacrylate, isobutyl acrylate, hexyl acrylate or
  • Glycols or polyalkylene glycols where only one OH group of the glycols or polyglycols is esterified with a monoethyl-unsaturated carboxylic acid, for example hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate and hydroxybutyl methacrylate.
  • a monoethyl-unsaturated carboxylic acid for example hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate and hydroxybutyl methacrylate.
  • esters of ethylenically unsaturated carboxylic acids with amino alcohols for example dimethyl on ethyl acrylate, dimethylammoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl ethacrylate, dimethylammopropyl acrylate and diethylaminopropyl methacrylate.
  • Acrylamide and methacrylamide are preferred amides.
  • the basic acrylates are used in the form of the free bases, the salts with mineral acids or carboxylic acids or also quaternary in the copolymerization with N-vinylformamide.
  • comonomers are acrylonitrile, methacrylonitrile, N-vinyl imidazole and substituted N-vinylimidazoles such as N-vinyl -2-methylimidazole and N vinyl -2-ethylimidazole, N-vinylimidazoline and substituted N-vinylimidazoles such as N- Vmyl -2-methyl-imidazole.
  • Monomers containing sulfo groups such as vinylsulfonic acid, allylsulfonic acid, styrene sulfonic acid and 3-sulfopropyl acrylate, are also suitable as comonomers as other monoethyl-unsaturated monomers.
  • the monomers containing acid groups can be used in the form of the free acids or as alkane or ammonium salts in the copolymerization with N-vinylformamide.
  • regulators are, for example, organic compounds containing sulfur in bound form. These include, for example, mercapto compounds such as mercaptoethanol, mercaptopropanol, mercaptobutanol, mercaptoacetic acid, mercaptopropionic acid, butyl mercaptan and dodecyl mercaptan.
  • allyl compounds such as allyl alcohol, aldehydes such as formaldehyde, acetaldehyde, propionaldehyde, n-butyraldehyde and isobutyraldehyde, formic acid, ammonium formia, propionic acid, hydrazine sulfate and butenols. If the polymerization is carried out in the presence of regulators, preference is given to 0.05 up to 20% by weight, based on the monomers used in the polymerization.
  • the monomers are usually polymerized in an inert gas atmosphere with the exclusion of atmospheric oxygen. During the polymerization, good mixing of the reactants is generally ensured. In the case of smaller batches in which a reliable removal of the heat of polymerization is ensured, the monomers can be copolymerized discontinuously by heating the reaction mixture to the polymerization temperature and then allowing the reaction to proceed. These temperatures are, for example, in the range from 40 to 180 ° C., it being possible to work under normal pressure, reduced or else increased pressure. Polymers with a high molecular weight are obtained if the polymerization is carried out in water. This can be used, for example, for the production of water-soluble polymers in aqueous solution, as water-oil emulsions.
  • the polymerization is preferably carried out in a pH range from 4 to 9, in particular 5 to 8. In many cases it is advisable to also work in the presence of buffers, for example using primary res or secondary sodium phosphate as a buffer.
  • the homo- and copolymers of N-vinylformamide are subjected to a second stage in a polymer-analogous reaction of hydrolysis with acids, bases or enzymes.
  • Suitable acids are, for example, mineral acids such as hydrogen halide (gaseous or in aqueous solution), sulfuric acid, nitric acid, phosphoric acid and organic acids such as Ci to C 5 carboxylic acids, eg. B. formic acid, acetic acid and propionic acid or the aliphatic or aromatic sulfonic acids such as methanesulfonic acid, benzenesulfonic acid or toluenesulfonic acid.
  • Hydrochloric acid or sulfuric acid is preferably used for the hydrolysis.
  • the pH is 0 to 5.
  • Per formyl group equivalent in the polymer for example, 0.05 to 1.5 equivalents of an acid, preferably 0.4 to 1.2, are required.
  • metal hydroxides of metals of the first and second main groups of the periodic table can be used, for example lithium hydroxide, sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide, strontium hydroxide and barium hydroxide.
  • ammonia and alkyl derivatives of ammonia can also be used, e.g. Alkyl- or arylamines such as t ⁇ ethylamine, monoethanolam,
  • Diethanolamine, triethanolamine, morphol or aniline In the case of hydrolysis with bases, the pH is 8 to 14.
  • the bases can be used in solid, liquid or, if appropriate, also in the gaseous state, diluted or undiluted.
  • Ammonia, sodium hydroxide solution or potassium hydroxide solution are preferably used as bases for the hydrolysis.
  • the hydrolysis in the alkaline and in the acidic pH range usually takes place at temperatures of, for example, 30 to 170, preferably 50 to 120 ° C. It is complete after about 2 to 8, preferably 3 to 5 hours.
  • the reaction mixture is preferably neutralized so that the pH of the hydrolyzed polymer solution is 2 to 8, preferably 3 to 7.
  • carboxylic acids are not chemically changed during hydrolysis.
  • ester and amide units saponify to carboxylic acid units.
  • Units of amides or carboxylic acids are formed from empolymerized monoethyl-unsaturated nitriles. Vmylamm- can also be made from
  • the degree of hydrolysis of the copolymerized comonomers can easily be determined analytically.
  • Polymers of component a) which contain vinylamm units are preferably polymers which
  • N- vinyl formamide N- vinyl formatamide, vinyl formate, vinyl acetate, vinyl propionate, vinyl alcohol and / or N-vinyl urea units
  • Polymer seeds to be used preferably contain
  • copolymers are either partially or fully hydrolyzed homopolymers of N-Vmylformamids.
  • Hydrolysed copolymers of N-V contain nylformamide, for example
  • the polymers containing vinylamm units have a molar mass M w of from 5000 to 3 million, preferably from 20,000 to 2 million.
  • the partially or fully hydrolyzed polymers of N-methylformamide have a charge density of 4 to 18, preferably 8 to 18 meq / g (determined at pH 7).
  • the polymers of group a) are used in amounts of 0.01 to 0.8% by weight, preferably 0.01 to 0.5% by weight, in the process according to the invention.
  • Polymers of group b) are, for example, cationic polyacrylamides with molecular weights M w of at least 4 million polymers of this type are described in EP-A-335 575 cited in the prior art. They are commercially available.
  • the high molecular weight cationic polyacrylamides are produced by polymerizing acrylamide with cationic monomers.
  • Suitable cationic monomers are, for example, the esters of ethylenically unsaturated C 3 to C 5 carboxylic acids with amino alcohols, such as dimethylammoethyl acrylate, diethylaminoethyl acrylate, dimethylamethylethyl methacrylate, diethylammoethyl methacrylate and di n-propylammoethylacrylate.
  • Other suitable cationic monomers that can be copolymerized with acrylamide are N vinylimidazole, N-Vmylimidazolm and basic
  • Acrylamides such as D methylammoethylacrylamide.
  • the basic monomers can be used in the form of the free bases, as salts or in quaternized form in the copolymerization.
  • the catalytic polyacrylamides contain, for example, 5 to 40, preferably 10 to 40, cationic monomers in an empolymerized form.
  • the molecular weights M w of the cationic polyacrylamides are at least 4,000,000 and in most cases are above 5,000,000, for example in the range from 5,000,000 to 1,500,000.
  • Suitable cationic polymers of group b) are polymers containing vinylamine units and having molecular weights of at least 4000000. Polymers containing vinylamine units have already been described above. The polymers containing vinylamine units which are suitable here as component b) differ from those of group a) in that they have a higher molar mass. These polymers are preferably completely or partially hydrolyzed homopolymers of N vinylformamide. In addition, hydrolyzed copolymers of N-vinylformamide with vinyl formate, vinyl acetate, vinyl propionate, acrylic acid, methacrylic acid, N-methylpyrrolidone and NV yicaprolactam are suitable.
  • Copolymers of N-vinylformamide and ethyl-unsaturated carboxylic acids are according to the Hydro amphoteric lysis, but always have an excess of cationic charge.
  • the polymers preferably contain up to a maximum of 40% by weight of polymerized vinylamine units. Those polymers which contain 10 to 35% by weight of vinylamine units are particularly preferably used.
  • the polymers of group b) containing vinylamine units preferably have a charge density at pH 7 of, for example, 0.5 to 7 milliaquivalents per gram. They are added to the paper stock in amounts of 0.005 to 0.5, preferably 0.01 to 0.2% by weight.
  • All paper qualities and cardboard can be produced according to the method according to the invention, for example papers for newspaper printing, so-called medium-fine writing and printing papers, natural gravure papers and also lightweight coating base papers.
  • wood pulp, thermo-mechanical material (TMP), chemo-thermo-mechanical material (CTMP), pressure sanding (PGW) and sulfite and sulfate pulp can be used.
  • Pulp and wood pulp can also be used as raw materials for the production of the pulp.
  • these so-called integrated factories are further processed into paper in more or less moist form without paper thickening or drying. Due to the impurities that have not been completely removed from them, these fiber materials still contain substances which severely disrupt the normal paper production process. However, pulps containing contaminants can also be easily processed by the method according to the invention.
  • Both filler-free and filler-containing paper can be produced by the process according to the invention.
  • the full peat content in paper can be up to a maximum of 40% by weight and is preferably in the range from 5 to 25% by weight.
  • Suitable fillers are, for example, clay, kaolin, native and precipitated chalk, titanium dioxide, talc, calcium sulfate, barium sulfate, aluminum oxide, satin white or mixtures of the fillers mentioned.
  • the consistency of the pulp is, for example, 0.1 to
  • At least one cationic polymer from group a) is first added to the fiber slurry and then at least one cationic polymer from group b) is added.
  • This additive causes a strong flocculation of the paper stock.
  • the z. B. in one or more cleaning, mixing and pumping stages or a pulper, sifter or also in a refiner or sieve through which the pre-flocked paper stock is passed, the so-called “hard giant” present in the flocked system will lure “destroyed. After the shear step you sit Bentomt, colloidal silica or clay too, whereby so-called soft microflakes are formed.
  • bentome colloidal silica or clay
  • the amounts of bentome, colloidal silica or clay are 0.01 to 2, preferably 0.05 to 0.5% by weight, based on dry paper stock.
  • Bentomt is an aluminum layer silicate based on Montmorillomt, which occurs in nature. It is mostly used after the calcium ions have been replaced by sodium ions.
  • Bentomt is treated in an aqueous slurry with sodium hydroxide solution. This makes it fully swellable in water and forms highly viscous tixotropic gel structures.
  • the plate diameter of the bentome is, for example, 1 to 2 ⁇ m, the plate thickness is approximately 10 ⁇ .
  • the bentome has a specific surface area of 60 to 800 m 2 / g.
  • the percentages in the examples mean percent by weight, unless the context indicates otherwise.
  • the molecular weights M w were determined using the static light scattering method. Paper sheets are produced in a Rapid Kothen sheet former. The optical permeability of the white water was checked with a Dr. Long spectrometer determined at 588 nm. The drainage times, which are given in the examples, were determined for 500 ml of filtrate in a Schopper-Riegler test device.
  • a pulp with a consistency of 5.9 g / l was produced from 40% TMP (thermo-mechanical material), 40% bleached pine sulfate with a degree of grinding of 40 degrees SR (Schopper-Riegler) and 20% coated scrap (coating waste).
  • the pH of the pulp was 7.6.
  • the paper stock was divided into several samples which were mixed with the polymers indicated in Table 2 in accordance with Examples a) to d). After polymers 2 to 5 had been added to the paper stock, the mixture was stirred and then the amounts of cationic polymer 6 likewise given in table 2 were added. Thereafter, the pulp was sheared for 1 min by stirring at a speed of 1500 revolutions / mm.
  • EP-A-0 335 575 tested in the presence of polymer 5 (comparative example 1.3). The results are summarized in Table 2.
  • a pulp with a consistency of 6.1 g / 1 and a freeness of 50 ° SR was produced from 100 parts of unprinted newsprint with a filler content of approx. 10% and 10 parts of Chinaclay (Type XI from ECC).
  • the pH of the pulp was 7.6.
  • the paper stock was divided into several samples and dewatered under the conditions given in Table 3 in a Schopper-Riegler test device. First the polymers a) were metered in and then the polymers (b). The paper stock was then subjected to a shear step by stirring it 1 mm at 1500 revolutions / mm. Then the dome was dosed and the drainage time and optical permeability were determined. The results are shown in Table 3.
  • a pulp with a consistency of 6 g / l and a freeness of 50 ° SR was produced from 100 parts of printed newsprint.
  • the pH of the pulp was 7.6.
  • the pulp was divided into several samples.
  • the cationic polymer of type a) was metered in first and then the catalytic polymer in accordance with b).
  • the pulps were then stirred for 1 min each with a stirrer at a speed of 1500 revolutions / mm.
  • 0.2% bentomite, based on dry paper stock was added and the dewatering time was determined in a Schopper-Riegler test device.
  • the optical permeability of the white water was also determined.

Landscapes

  • Paper (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Procédé de fabrication de papier et de carton par déshydratation de la pâte à papier, avec formation de feuilles et séchage de celles-ci, selon lequel on ajoute à la pâte à papier, tout d'abord a) des polyéthylèneimines de masse molaire Mw supérieure à 500 000 ou des polymères renfermant des motifs vinylamines, de masse molaire de 5000 à 3 millions, puis b) des copolymères renfermant des motifs polyacrylamides cationiques ou vinylamines, les masses molaires Mw des polymères s'élevant à chaque fois à au moins 4 millions, et on soumet ensuite la pâte à papier à au moins une étape de cisaillement et à une floculation par addition de bentonite, d'acide silicique colloïdal ou d'argile.
EP97930506A 1996-07-09 1997-07-07 Procede de fabrication de papier et de carton Expired - Lifetime EP0910701B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19627553 1996-07-09
DE19627553A DE19627553A1 (de) 1996-07-09 1996-07-09 Verfahren zur Herstellung von Papier und Karton
PCT/EP1997/003574 WO1998001623A1 (fr) 1996-07-09 1997-07-07 Procede de fabrication de papier et de carton

Publications (2)

Publication Number Publication Date
EP0910701A1 true EP0910701A1 (fr) 1999-04-28
EP0910701B1 EP0910701B1 (fr) 2000-10-11

Family

ID=7799290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930506A Expired - Lifetime EP0910701B1 (fr) 1996-07-09 1997-07-07 Procede de fabrication de papier et de carton

Country Status (9)

Country Link
US (1) US6132558A (fr)
EP (1) EP0910701B1 (fr)
JP (1) JP2000514144A (fr)
AT (1) ATE196937T1 (fr)
CA (1) CA2258569C (fr)
DE (2) DE19627553A1 (fr)
ES (1) ES2151736T3 (fr)
NO (1) NO990078L (fr)
WO (1) WO1998001623A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7306701B2 (en) 2002-08-07 2007-12-11 Basf Aktiengesellschaft Production of paper, board and cardboard
DE102008000811A1 (de) 2007-03-29 2008-10-09 Basf Se Verfahren zur Herstellung von Papier
US7998314B2 (en) 2004-12-22 2011-08-16 Basf Aktiengesellschaft Method for the production of paper, cardboard and card
US8029647B2 (en) 2004-09-10 2011-10-04 Basf Aktiengesellschaft Method for the production of paper, paperboard and cardboard
US8337665B2 (en) 2004-03-16 2012-12-25 Basf Se Method for producing paper, paperboard and cardboard
US8394237B2 (en) 2008-09-02 2013-03-12 BASF SE Ludwigshafen Method for manufacturing paper, cardboard and paperboard using endo-beta-1,4-glucanases as dewatering means
WO2013127731A1 (fr) 2012-03-01 2013-09-06 Basf Se Procédé de fabrication de papier et de carton
US9404223B2 (en) 2012-02-01 2016-08-02 Basf Se Process for the manufacture of paper and paperboard
US10113270B2 (en) 2013-01-11 2018-10-30 Basf Se Process for the manufacture of paper and paperboard

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713755A1 (de) * 1997-04-04 1998-10-08 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton mit hoher Trockenfestigkeit
US6099689A (en) * 1998-02-17 2000-08-08 Nalco Chemical Company Production of paper and board products with improved retention, drainage and formation
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
DE10138631A1 (de) * 2001-08-13 2003-02-27 Basf Ag Verfahren zur Herstellung von beschichtetem Papier mit hoher Weiße
JP4179913B2 (ja) * 2003-03-31 2008-11-12 ソマール株式会社 紙の製造方法
DE10315363A1 (de) * 2003-04-03 2004-10-14 Basf Ag Wässrige Anschlämmungen von feinteiligen Füllstoffen, Verfahren zu ihrer Herstellung und ihre Verwendung zur Herstellung füllstoffhaltiger Papiere
DE10319741A1 (de) * 2003-04-30 2004-11-18 Basf Ag Verfahren zur Verbesserung der Bedruckbarkeit von Papier und Papierprodukten beim Bedrucken mit Hilfe des Tintenstrahldruckverfahrens
DE102004056551A1 (de) * 2004-11-23 2006-05-24 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton mit hoher Trockenfestigkeit
DE102004058587A1 (de) 2004-12-03 2006-06-14 Basf Ag Verfahren zur Herstellung von Papieren mit hohen Flächengewichten
DE102004060587A1 (de) * 2004-12-16 2006-07-06 Süd-Chemie AG Bentonite zur Störstoffbindung in der Papierherstellung
ES2554691T3 (es) * 2004-12-17 2015-12-22 Basf Se Papeles con un alto contenido de cargas y una elevada resistencia a la tracción en seco
DE102005043800A1 (de) 2005-09-13 2007-03-22 Basf Ag Verfahren zur Herstellung von Papier, Pappe und Karton
US20100000693A1 (en) * 2006-10-31 2010-01-07 Basf Se Method for producing a multi layer fiber web from cellulose fibers
WO2008055857A2 (fr) * 2006-11-10 2008-05-15 Basf Se Revêtements à effet biocide
CN101547736B (zh) * 2006-12-13 2013-11-13 巴斯夫欧洲公司 微胶囊
US9249240B2 (en) * 2007-12-20 2016-02-02 Basf Se Graft polymers having oligoalkylenimine side chains, process for their preparation and their use
EP2805986B1 (fr) 2009-03-30 2017-11-08 FiberLean Technologies Limited Procédé pour la production de gels de cellulose nano-fibrillaire
PL2808440T3 (pl) 2009-03-30 2020-01-31 Fiberlean Technologies Limited Sposób wytwarzania zawiesin nanofibrylarnej celulozy
GB0908401D0 (en) 2009-05-15 2009-06-24 Imerys Minerals Ltd Paper filler composition
EP2443284B2 (fr) 2009-06-16 2020-11-18 Basf Se Procédé de fabrication pour augmenter la résistance à sec de papier et de carton présentant
WO2011056934A1 (fr) 2009-11-06 2011-05-12 The Procter & Gamble Company Capsules de grande efficacité comportant un agent bénéfique
CA2780597C (fr) 2009-12-29 2017-04-04 Hercules Incorporated Procede d'amelioration de la resistance a sec du papier au moyen d'un traitement aux polymeres renfermant de la vinylamine et aux polymeres renfermant de l'acrylamide
ES2464733T3 (es) 2010-04-27 2014-06-03 Omya International Ag Proceso para la producción de materiales compuestos a base de gel
EP2386682B1 (fr) 2010-04-27 2014-03-19 Omya International AG Procédé de fabrication de matériaux composites à base de gel
EP2596093B1 (fr) 2010-07-20 2017-12-13 The Procter and Gamble Company Particules pour administration dotées d'une pluralité de coeurs
GB201019288D0 (en) 2010-11-15 2010-12-29 Imerys Minerals Ltd Compositions
ES2660555T3 (es) 2011-03-23 2018-03-22 Basf Se Composiciones que contienen compuestos iónicos, poliméricos que comprenden grupos imidazolio
WO2012175528A1 (fr) 2011-06-20 2012-12-27 Basf Se Fabrication de papier et de carton
CA2838545C (fr) 2011-06-21 2019-09-24 Basf Se Impression de grilles de diffraction sur papier et carton
ES2640272T3 (es) 2011-11-23 2017-11-02 Basf Se Aglutinante acuoso para sustratos granulados y/o fibrosos
US9359518B2 (en) 2011-11-23 2016-06-07 Basf Se Aqueous binder for granular and/or fibrous substrates
WO2013186167A2 (fr) 2012-06-14 2013-12-19 Basf Se Procédé destiné à fabriquer des éléments de sécurité et des hologrammes
CN106103846B (zh) 2013-10-04 2018-08-21 巴斯夫欧洲公司 高光泽金属效应纸
FI20145063L (fi) * 2014-01-22 2015-07-23 Kemira Oyj Paperinvalmistusainekoostumus ja menetelmä kuitumassan käsittelemiseksi
EP3132016A1 (fr) 2014-06-30 2017-02-22 The Procter & Gamble Company Composition de lessive
EP3012282B1 (fr) 2014-10-20 2020-10-07 ABB Power Grids Switzerland AG Carton comprimé
EP3277884A1 (fr) 2015-03-30 2018-02-07 Basf Se Papiers et cartons à effet métallique haute brillance
ES2741514T3 (es) 2015-10-14 2020-02-11 Fiberlean Tech Ltd Material laminado conformable en 3D
KR102269338B1 (ko) 2016-04-05 2021-06-28 파이버린 테크놀로지스 리미티드 종이 및 판지 제품
US11846072B2 (en) 2016-04-05 2023-12-19 Fiberlean Technologies Limited Process of making paper and paperboard products
JP2019515144A (ja) 2016-04-22 2019-06-06 ファイバーリーン テクノロジーズ リミテッド ミクロフィブリル化セルロースを含む繊維並びにそれからの繊維及び不織布材料の製造方法
WO2017194331A1 (fr) 2016-05-12 2017-11-16 Basf Se Utilisation de sels de polyimidazolium en tant qu'inhibiteurs de transfert de colorants
KR102570466B1 (ko) 2016-09-16 2023-08-28 솔레니스 테크놀러지스, 엘.피. 마이크로피브릴화 셀룰로스를 사용한 제지 시스템에서의 증가된 배수 성능

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI70230C (fi) * 1981-07-18 1986-09-15 Basf Ag Rakkedjiga basiska polymerisat foerfarande foer deras framstaellning och deras anvaendning
DE3128478A1 (de) * 1981-07-18 1983-02-03 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von linearen, basischen polymerisaten
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
US4913775A (en) * 1986-01-29 1990-04-03 Allied Colloids Ltd. Production of paper and paper board
EP0335575B2 (fr) * 1988-03-28 2000-08-23 Ciba Specialty Chemicals Water Treatments Limited Fabrication de papier et carton
DE4001045A1 (de) * 1990-01-16 1991-07-18 Basf Ag Verfahren zur herstellung von papier, pappe und karton
GB9301451D0 (en) * 1993-01-26 1993-03-17 Allied Colloids Ltd Production of filled paper
DE4493351T1 (de) * 1993-05-10 1996-08-22 Grace W R & Co Papierherstellungsverfahren
US5876563A (en) * 1994-06-01 1999-03-02 Allied Colloids Limited Manufacture of paper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9801623A1 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7306701B2 (en) 2002-08-07 2007-12-11 Basf Aktiengesellschaft Production of paper, board and cardboard
US8337665B2 (en) 2004-03-16 2012-12-25 Basf Se Method for producing paper, paperboard and cardboard
US8486227B2 (en) 2004-03-16 2013-07-16 Basf Se Method for producing paper, paperboard and cardboard
US8029647B2 (en) 2004-09-10 2011-10-04 Basf Aktiengesellschaft Method for the production of paper, paperboard and cardboard
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
US8394237B2 (en) 2008-09-02 2013-03-12 BASF SE Ludwigshafen Method for manufacturing paper, cardboard and paperboard using endo-beta-1,4-glucanases as dewatering means
US9404223B2 (en) 2012-02-01 2016-08-02 Basf Se Process for the manufacture of paper and paperboard
WO2013127731A1 (fr) 2012-03-01 2013-09-06 Basf Se Procédé de fabrication de papier et de carton
US9631319B2 (en) 2012-03-01 2017-04-25 Basf Se Process for the manufacture of paper and paperboard
US10113270B2 (en) 2013-01-11 2018-10-30 Basf Se Process for the manufacture of paper and paperboard

Also Published As

Publication number Publication date
DE19627553A1 (de) 1998-01-15
CA2258569A1 (fr) 1998-01-15
CA2258569C (fr) 2005-04-12
DE59702462D1 (de) 2000-11-16
JP2000514144A (ja) 2000-10-24
NO990078D0 (no) 1999-01-08
ATE196937T1 (de) 2000-10-15
NO990078L (no) 1999-01-08
WO1998001623A1 (fr) 1998-01-15
ES2151736T3 (es) 2001-01-01
EP0910701B1 (fr) 2000-10-11
US6132558A (en) 2000-10-17

Similar Documents

Publication Publication Date Title
EP0910701A1 (fr) Procede de fabrication de papier et de carton
DE3624813C2 (fr)
EP2443284B1 (fr) Procédé de fabrication pour augmenter la résistance à sec de papier et de carton présentant
EP0948677B1 (fr) Procede de production de papier
EP1137679B1 (fr) Dispersions aqueuses de polymerisats d'amides d'acides n-vinylcarboxyliques solubles dans l'eau, leur procede de fabrication et leur utilisation
EP0071050B1 (fr) Des polymères linéaires, basiques, procédé pour leur préparation et leur utilisation
DE3128478A1 (de) Verfahren zur herstellung von linearen, basischen polymerisaten
EP0216387A2 (fr) Procédé de préparation de copolymères contenant des unités vinylamine et leur usage comme agent améliorant la résistance à l'état humide et sec du papier
EP0823921B1 (fr) Polymeres greffes constitues de polymeres contenant des unites d'oxyde d'alkylene et de composes ethyleniquement insatures, leur procede de preparation et leur utilisation
EP2315875A1 (fr) Procédé pour améliorer la résistance à sec du papier, du carton-pâte et du carton
EP0897395A1 (fr) POLYMERISATS CONTENANT DES UNITES $g(b)-HYDROXYALKYLVINYLAMINE, PROCEDE PERMETTANT DE LES PREPARER ET LEUR UTILISATION
EP0975837B1 (fr) Procede pour la fabrication de papier, carton et carton-pate
EP0672212B1 (fr) Utilisation de copolymerisats hydrolyses d'amides de l'acide n-vinylcarboxylique et d'acides carboxyliques monoethyleniquement insatures dans la fabrication du papier
DE4430069A1 (de) Wäßrige, lösungsmittelfreie Dispersionen von kationischen Polymerisaten enthaltende Papierleimungsmittel und Verfahren zur Herstellung von geleimtem Papier unter Verwendung dieser Mittel
WO2010145990A1 (fr) Procédé de réduction de dépôts dans la partie sèche lors de la fabrication de papier et carton
WO1992014881A1 (fr) Boues aqueuses de matieres de charge finement pulverisees et leur utilisation pour produire du papier contenant des charges
DE10319738A1 (de) Verfahren zur Herstellung von wässrigen Dispersionen von Polyelektrolytkomplexen und ihre Verwendung zur Erhöhung der Naßfestigkeit von Papier, Pappe und Karton
WO1998048112A1 (fr) Procede de production de papier, de carton-pate et de carton
EP2499297B1 (fr) Procédé de production de papier ou équivalent
EP0194621B1 (fr) Emploi de copolymères à base de (méth)acrylates d'alkyl comme agents dispersants pour des pigments dans la fabrication du papier
DE102005029010A1 (de) Verfahren zur Herstellung von Papier, Pappe und Karton

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

17P Request for examination filed

Effective date: 19981202

AK Designated contracting states

Kind code of ref document: A1

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

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19991125

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 FI FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 196937

Country of ref document: AT

Date of ref document: 20001015

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59702462

Country of ref document: DE

Date of ref document: 20001116

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20001026

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2151736

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20060705

Year of fee payment: 10

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

Ref country code: ES

Payment date: 20060825

Year of fee payment: 10

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070707

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 NON-PAYMENT OF DUE FEES

Effective date: 20070707

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070709

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 NON-PAYMENT OF DUE FEES

Effective date: 20070709

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

Ref country code: FI

Payment date: 20130724

Year of fee payment: 17

Ref country code: AT

Payment date: 20130726

Year of fee payment: 17

Ref country code: NL

Payment date: 20130724

Year of fee payment: 17

Ref country code: SE

Payment date: 20130725

Year of fee payment: 17

Ref country code: CH

Payment date: 20130725

Year of fee payment: 17

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

Ref country code: FR

Payment date: 20130731

Year of fee payment: 17

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

Ref country code: IT

Payment date: 20130727

Year of fee payment: 17

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

Ref country code: DE

Payment date: 20130930

Year of fee payment: 17

Ref country code: BE

Payment date: 20130830

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59702462

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20150201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 196937

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140707

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 NON-PAYMENT OF DUE FEES

Effective date: 20150201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150331

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140707

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140707

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150203

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59702462

Country of ref document: DE

Effective date: 20150203

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

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140707

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140708

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

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140731