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EP1819875B1 - Procede pour produire du papier a grammage eleve - Google Patents

Procede pour produire du papier a grammage eleve Download PDF

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Publication number
EP1819875B1
EP1819875B1 EP05822765.3A EP05822765A EP1819875B1 EP 1819875 B1 EP1819875 B1 EP 1819875B1 EP 05822765 A EP05822765 A EP 05822765A EP 1819875 B1 EP1819875 B1 EP 1819875B1
Authority
EP
European Patent Office
Prior art keywords
process according
paper
retention
branched
cationic polyacrylamide
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
EP05822765.3A
Other languages
German (de)
English (en)
Other versions
EP1819875A2 (fr
Inventor
Oliver Koch
Rainer Blum
Ron Van Dijk
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 EP1819875A2 publication Critical patent/EP1819875A2/fr
Application granted granted Critical
Publication of EP1819875B1 publication Critical patent/EP1819875B1/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
    • 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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a process for producing high basis weight papers, especially paperboard and paperboard by dewatering a stock on a wire in the presence of a combination of at least one amino group-containing polymer and at least one branched cationic polyacrylamide as retention and dewatering agents to form sheets and dry them Leaves.
  • Polyethyleneimines and modified polyethyleneimines as retention and drainage agents are known, for example, from the German Offenlegungsschrift DE 24 34 816 known.
  • DE 24 34 816 and the literature cited therein describes the reactions of polyethyleneimine with crosslinkers such as epichlorohydrin, reactions of polyethylenimine or other oligoamines with oligocarboxylic acids to form polyamidoamines, crosslinked products of these polyamidoamines and reactions of the polyamidoamines with ethyleneimine and bifunctional crosslinkers.
  • modified polyethyleneimines are made WO 00/67884 A1 and WO 97/25367 known. In the processes described therein, the modified polyethyleneimines are obtained by ultrafiltration.
  • modified polyethyleneimines are characterized in particular by a good drainage acceleration and formation, but weaknesses in the filler and fiber retention are known from practice.
  • polyacrylamides are for example EP 0 176 757 A2 known.
  • Cationic polyacrylamides are also known in combination with other components as so-called microparticle systems.
  • polymers such as modified polyethyleneimines or polyacrylamides are added as flocculants which are further flocculated by subsequent addition of inorganic microparticles such as bentonite or colloidal silica.
  • inorganic microparticles such as bentonite or colloidal silica.
  • the order of addition of the components can also be reversed.
  • EP 0 608 986 A1 discloses a process for producing filler-containing paper by adding an anionic component, such as bentonite, to the thick stock and then adding a cationic polymer to the stock.
  • an anionic component such as bentonite
  • EP 0 335 575 A2 Another microparticle system is out EP 0 335 575 A2 known, wherein a high molecular weight cationic polymer such as polyacrylamide is metered before the last shear stage to the fiber suspension. Subsequently, an inorganic component, which may be either bentonite or colloidal silica, is added after the last shear stage. For contaminant fixation, a modified polyethylenimine can also be used.
  • US 6,103,065 describes a microparticle system consisting of a cationic polymer, which may also be a polyethyleneimine, with a charge density> 4 meq / g, another cationic polymer such as a lower charge density linear polyacrylamide and a bentonite.
  • a cationic polymer which may also be a polyethyleneimine, with a charge density> 4 meq / g
  • another cationic polymer such as a lower charge density linear polyacrylamide and a bentonite.
  • the EP 0 278 336 A2 describes aqueous solutions consisting of a modified polyamidoamine and a cationic, linear polyacrylamide.
  • a cationic group the quaternization product of dimethylaminopropylacrylamide is described. This product is intended to simplify the handling of both types of paper adjuvant and also improve both retention and drainage.
  • papers having high basis weights are understood as meaning those papers whose basis weight is at least 300 g / m 2 , preferably at least 500 g / m 2 , more preferably at least 750 g / m 2 , very particularly preferably at least 1000 g / m 2 and in particular at least 1500 g / m 2 .
  • basis weights There are no limits to the basis weights. Papers with basis weights of 2000 g / m 2 or even 2500 g / m 2 and more are quite common.
  • Papers with such high basis weights are, for example, packaging papers, cardboard and cardboard.
  • Amino-containing polymers are described in the literature. The individual references are hereby expressly and fully incorporated by reference.
  • the amino-containing polymers or modified polyethylenimines are preferably selected from polyalkyleneimines, polyalkylenepolyamines, polyamidoamines, polyalkyleneglycol polyamines, polyamidoamines grafted with ethyleneimine and subsequently reacted with at least bifunctional crosslinkers, and mixtures and copolymers thereof.
  • Preference is given to polyalkyleneimines, in particular polyethyleneimines, and the derivatives thereof.
  • Particularly preferred are polyamidoamines which have been grafted with ethyleneimine and subsequently reacted with at least bifunctional crosslinkers.
  • polymers are used as component (a) by condensation of C 2 -C 12 dicarboxylic acids, in particular adipic acid, with poly (alkylenediamines), in particular diethylenetriamine, triethylenetetramine and tetraethylenepentamine, or mono-, bis -, tris or tetra (aminopropyl) ethylenediamine or mixtures thereof, grafting of the polyamidoamines obtained in the condensation with ethyleneimine and subsequent crosslinking are available. It is preferred to graft with as much ethyleneimine that the polyamidoamine per grafted nitrogen basic group contains 2 to 50, preferably 5 to 10 Ethyleniminein grafted units.
  • the grafted polyamidoamine is crosslinked by reaction with halogen-free, at least bifunctional crosslinkers, preferably bisglycidyl ethers of a polyalkylene glycol.
  • Particularly preferred are bis-glycidyl ethers of polyethylene glycols having molecular weights between 400 and 5,000, in particular 500 to 3,000, such as. B. about 600 or about 2,000.
  • Component (b) of the retention and dewatering agent are those branched cationic polyacrylamides which, apart from acrylamide and at least one permanently cationic comonomer, contain a third difunctional or trifunctional unsaturated component which leads to the branching of the polymer chains.
  • Such branched cationic polymers are, for example, in US 20030150575 described.
  • the branched (co) polyacrylamide is a cationic copolymer of acrylamide and a non-saturated cationic ethylene monomer selected from dimethylaminoethyl acrylate (ADAME), dimethylaminoethylacrylamide, dimethylaminoethyl methacrylate (MADAME) which are quaternized or salified by various acids and quaternizing agents such as benzyl chloride, methyl chloride, alkyl or aryl chloride, dimethyl sulfate, furthermore dimethyldiallylammonium chloride (DADMAC), acrylamidopropyltrimethylammonium chloride (APTAC) and methacrylamidopropyltrimethylammonium chloride (MAPTAC).
  • ADAME dimethylaminoethyl acrylate
  • MADAME dimethylaminoethyl methacrylate
  • DADMAC dimethyldiallylammonium chloride
  • ATAC acryla
  • Preferred cationic comonomers are dimethylaminoethyl acrylate methochloride and dimethylaminoethylacrylamide methochloride, which are obtained by alkylation of dimethylaminoethyl acrylate or dimethylaminoethylacrylamide with methyl chloride.
  • This copolymer is branched, as known to those skilled in the art, through a branching agent consisting of a compound having at least two reactive moieties selected from the group comprising double, aldehyde or epoxy bonds. These compounds are known and are for example in the document EP 0 374 458 A1 described.
  • a branched polymer is a polymer having branches, groups or branches in its entirety, which are not arranged in three directions as a whole in one plane and in contrast to a cross-linked polymer; such high molecular weight branched polymers are well known as flocculants in papermaking.
  • These branched polyacrylamides differ from the crosslinked polyacrylamides in the fact that in these latter groupings are arranged three-dimensionally to result in practically insoluble products of infinite molecular weight.
  • the branching may preferably be accomplished during (or optionally after) the polymerization, for example by reaction of two soluble polymers having counterions, or by reaction via formaldehyde or a polyvalent metal compound. Often the branching takes place during polymerization by the addition of a branching agent, this solution being preferred in practice. Branching polymerization processes are well known.
  • branching agents which can be incorporated include ionic branching agents such as polyvalent metal salts, formaldehyde, glyoxal or, preferably, covalent crosslinking agents which copolymerize with the monomers, preferably diethylene-unsaturated monomers (such as the family of diacrylate esters such as the diacrylates of polyethylene glycols PEG ), or polyethylene-unsaturated monomers of the type conventionally used for crosslinking water-soluble polymers especially methylene bisacrylamide (MBA) or any of the other known acrylic branching agents.
  • ionic branching agents such as polyvalent metal salts, formaldehyde, glyoxal or, preferably, covalent crosslinking agents which copolymerize with the monomers, preferably diethylene-unsaturated monomers (such as the family of diacrylate esters such as the diacrylates of polyethylene glycols PEG ), or polyethylene-unsaturated monomers of the type conventionally used for crosslinking water-soluble poly
  • crosslinking agents are often identical to the crosslinking agents, but if a branched and uncrosslinked polymer is to be obtained, crosslinking can be achieved by optimizing polymerization conditions such as concentration in the polymerization, type and amount of the transfer agent, temperature, type and amount of the initiators like, can be prevented.
  • the branching agent is methylenebisacrylamide (MBA), which is added at five to two hundred (5 to 200), preferably 5 to 50, moles per million moles of the monomer.
  • MBA methylenebisacrylamide
  • the degree of branching of the branched cationic polyacrylamides is referred to as so-called "ionic regain" (ionic recovery RI).
  • ionic recovery RI ionic recovery RI
  • In erfindungsgze present method are preferably those branched cationic polyacrylamides used which have an RI of> 20%, preferably> 40%.
  • branched cationic polyacrylamides which consist of a mixture of branched and linear polyacrylamides, as described in the prior art, by the process according to the invention.
  • a mixture usually consists of a branched cationic polyacrylamide as described above and a linear polyacrylamide in a ratio of 99: 1 to 1: 2, preferably in a ratio of 90: 1 to 2: 1, and particularly preferably in a ratio of 90: 1 to 3: 1.
  • mixtures are preferably used in which at least 10 mol% of a cationic monomer, as listed above for component (b), preferably at least 20 mol% of a cationic monomer.
  • components (a) and (b) are preferably used as water-in-oil emulsions.
  • component (a) is preferably fixed in an amount of 100 g to 3 kg, ie pure active substance without solvent of the emulsion, based on one ton of dry paper, preferably in the range of 150 g 2.0 kg, based on one ton of dry paper and more preferably in the range of 200 g to 1.2 kg, based on one ton of dry paper
  • the component (b) is fixed in a range of from 50 g to 800 g, i. pure active substance without solvent of the emulsion, based on one ton of dry paper, preferably in the range from 65 g to 600 g, based on one ton of dry paper and more preferably in the range of 80 g to 400 g, based on one ton of dry paper.
  • components (a) and (b) are preferably used in a ratio of at least 2: 1, preferably at least 3: 1 and more preferably at least 4: 1.
  • the retention and dehydrating agent system can be fed to the paper stock-as a rule, the dosing of the retention and dewatering agent takes place in the thin material-for example in the form of a mixture of components (a) and (b).
  • both components can also be introduced into the thin material separately from one another before or after a shear stage.
  • At least one compound of component (a) is metered in, followed by at least one compound of component (b).
  • the compound of component (a) can be supplied to the stock, for example, before a shear stage and the compound of component (b) after the last shear stage before the headbox.
  • both compounds can be dosed before the last shear stage before the headbox or after the last stage before the headbox for pulp.
  • papers of high basis weight can be produced by the process according to the invention, as described above.
  • wood pulp, thermo-mechanical pulp (TMP), chemo-thermo-mechanical pulp (CTMP), pressure pulp (PGW) and sulfite and sulfate pulp can be used.
  • TMP thermo-mechanical pulp
  • CMP chemo-thermo-mechanical pulp
  • PGW pressure pulp
  • sulfite and sulfate pulp can be used.
  • wood pulp and pulp are further processed into paper, especially in the so-called integrated paper mills, in more or less moist form directly without prior thickening or drying. Due to the impurities not completely removed therefrom, these fiber materials still contain substances that greatly disrupt the usual papermaking process. If such pulps are used, it is advisable to work in the presence of a fixative.
  • 100% recovered paper is used for the production of high basis weight papers
  • Both unfilled and filler-containing papers can be produced by the process according to the invention.
  • the filler content in the paper may be up to a maximum of 40% by weight and is preferably in the range of 5 to 30% by weight.
  • suitable fillers are clay, kaolin, native and precipitated chalk, titanium dioxide, talc, calcium sulfate, barium sulfate, aluminum oxide, satin white or mixtures of the stated fillers.
  • the papermaking can be carried out in the presence of the usual process chemicals in the usual amounts, e.g. bulk sizing agents, such as in particular alkyldiketene dispersions, rosin size, alkenylsuccinimide dispersions or sizing polymer dispersions, solidifying agents such as epichlorohydrin-crosslinked polyamidoamines, polyvinylamines of average molecular weight or strength, fixatives, biocides, dyes and fillers.
  • the dosage of the usual process auxiliaries is preferably carried out in the thin material.
  • the process according to the invention gives papers of high basis weights with improved retention, especially in the case of fillers, and dewatering, as compared with the products prepared by known processes. Furthermore, the process according to the invention is simpler to carry out in comparison with the microparticle processes.
  • the percentages for the starting materials always mean percent by weight.

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  • Paper (AREA)

Claims (12)

  1. Procédé pour la production de papiers présentant des grammages élevés par déshydratation d'une pâte à papier sur un tamis en présence d'une combinaison d'au moins deux polymères comme système de moyen de rétention et de déshydratation avec formation de feuilles et séchage des feuilles, caractérisé en ce qu'on réalise la formation de feuilles en l'absence de floculants inorganiques finement divisés et on utilise comme moyen de rétention et de déshydratation
    (a) au moins un polymère contenant des groupes amino et
    (b) au moins un polyacrylamide cationique ramifié et le grammage du papier est d'au moins 300 g/m2.
  2. Procédé selon la revendication 1, caractérisé en ce que le polymère contenant des groupes amino est une polyéthylène-imine ou une polyéthylène-imine modifiée.
  3. Procédé selon la revendication 2, caractérisé en ce que la polyéthylène-imine modifiée est obtenue par transformation de composés polyamidoamine avec des dérivés poly(oxyde d'alkylène), qui sont transformés sur les groupes hydroxyle en position terminale par de l'épichlorhydrine.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le polymère contenant des groupes amino a été soumis à une ultrafiltration.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le polyacrylamide cationique ramifié est un copolymère cationique d'acrylamide et d'un monomère d'éthylène cationique non saturé.
  6. Procédé selon la revendication 5, caractérisé en ce que le monomère d'éthylène cationique non saturé est choisi parmi le méthochlorure d'acrylate de diméthylaminoéthyle et le méthochlorure de diméthylaminoéthylacrylamide.
  7. Procédé selon l'une quelconque des revendications 5 ou 6, caractérisé en ce qu'on utilise, comme agents de ramification, du méthylène-bisacrylamide.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le polyacrylamide cationique ramifié présente un regain ionique RI > 20%.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le polyacrylamide cationique ramifié présente un regain ionique RI > 40%.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le polyacrylamide cationique ramifié est un mélange d'un polyacrylamide cationique ramifié et d'un polyacrylamide linéaire dans un rapport de 99:1 à 1:2.
  11. Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'on utilise les composants (a) et (b) du système de moyen de rétention et de déshydratation, par rapport à 1 tonne de papier sec, en une quantité
    a. de 100 g à 3 kg sous forme solide, de préférence de 150 g à 2,0 kg et
    b. de 50 g à 800 g, de préférence de 65 g à 600 g.
  12. Utilisation d'une combinaison
    c. d'au moins un polymère contenant des groupes amino et
    d. d'au moins un polyacrylamide cationique ramifié comme unique moyen de rétention et de déshydratation lors de la production de papiers présentant des grammages élevés, le grammage du papier étant d'au moins 300 g/m2.
EP05822765.3A 2004-12-03 2005-12-01 Procede pour produire du papier a grammage eleve Expired - Lifetime EP1819875B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004058587A DE102004058587A1 (de) 2004-12-03 2004-12-03 Verfahren zur Herstellung von Papieren mit hohen Flächengewichten
PCT/EP2005/012796 WO2006058732A2 (fr) 2004-12-03 2005-12-01 Procede pour produire du papier a grammage eleve

Publications (2)

Publication Number Publication Date
EP1819875A2 EP1819875A2 (fr) 2007-08-22
EP1819875B1 true EP1819875B1 (fr) 2015-03-18

Family

ID=36500066

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05822765.3A Expired - Lifetime EP1819875B1 (fr) 2004-12-03 2005-12-01 Procede pour produire du papier a grammage eleve

Country Status (7)

Country Link
US (1) US8152962B2 (fr)
EP (1) EP1819875B1 (fr)
CN (1) CN101068985B (fr)
CA (1) CA2591299C (fr)
DE (1) DE102004058587A1 (fr)
ES (1) ES2539631T3 (fr)
WO (1) WO2006058732A2 (fr)

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EP2443282A1 (fr) * 2009-06-16 2012-04-25 Basf Se Procédé de réduction de dépôts dans la partie sèche lors de la fabrication de papier et carton
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CN102154934B (zh) * 2010-12-31 2012-08-01 中冶纸业银河有限公司 一种轻型纸新型助留助滤体系
PT2721214T (pt) * 2011-06-20 2018-04-12 Basf Se Fabrico de papel e cartão
CN103608516B (zh) * 2011-06-20 2016-11-16 巴斯夫欧洲公司 生产纸和纸板
ES2720487T3 (es) * 2012-02-01 2019-07-22 Basf Se Proceso para la fabricación de papel y cartón
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CN109181671B (zh) 2013-01-31 2020-08-25 艺康美国股份有限公司 用于提高油采收的流动性控制聚合物
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Also Published As

Publication number Publication date
CA2591299C (fr) 2014-10-07
CA2591299A1 (fr) 2006-06-08
DE102004058587A1 (de) 2006-06-14
WO2006058732A3 (fr) 2006-10-19
US20100147475A1 (en) 2010-06-17
US8152962B2 (en) 2012-04-10
WO2006058732A2 (fr) 2006-06-08
CN101068985A (zh) 2007-11-07
EP1819875A2 (fr) 2007-08-22
CN101068985B (zh) 2012-10-10
ES2539631T3 (es) 2015-07-02

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