EP0384268B1 - Procédé pour la fixation d'impuretés dans la fabrication du papier - Google Patents

Procédé pour la fixation d'impuretés dans la fabrication du papier Download PDF

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Publication number
EP0384268B1
EP0384268B1 EP90102772A EP90102772A EP0384268B1 EP 0384268 B1 EP0384268 B1 EP 0384268B1 EP 90102772 A EP90102772 A EP 90102772A EP 90102772 A EP90102772 A EP 90102772A EP 0384268 B1 EP0384268 B1 EP 0384268B1
Authority
EP
European Patent Office
Prior art keywords
polymers
process according
paper
acrylamide
water
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
EP90102772A
Other languages
German (de)
English (en)
Other versions
EP0384268A1 (fr
Inventor
Hans-Georg Dr.-Dipl.-Chem. Hartan
Alfons Dr.-Dipl.-Chem. Landscheidt
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.)
Evonik Operations GmbH
Stockhausen GmbH and Co KG
Ineos Composites IP LLC
Original Assignee
Chemische Fabrik Stockhausen GmbH
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 Chemische Fabrik Stockhausen GmbH filed Critical Chemische Fabrik Stockhausen GmbH
Publication of EP0384268A1 publication Critical patent/EP0384268A1/fr
Application granted granted Critical
Publication of EP0384268B1 publication Critical patent/EP0384268B1/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
    • D21H17/20—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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control

Definitions

  • the concentration of these water-soluble substances rises sharply as the water cycles become narrower.
  • the circulating water of the paper machine is particularly contaminated with these contaminants when wood-containing paper is produced.
  • DE-A-36 20 065 takes a different approach: Special drainage, retention and flocculants, namely high molecular weight, water-soluble polymers of N-vinyl amides, are used there, which have their effectiveness Only develop in the presence of contaminants that contain oligomers and / or polymers from the wood's constituents that contain phenolic groups as accompanying substances. These special N-vinylamide polymers are therefore insensitive to the contaminants that are always present in paper production in restricted or closed water cycles.
  • DE-A-27 34 001 discloses a process for avoiding the separation of pitch-like resins in the production of paper, in which a water-soluble, linear, cationic polymer based on a quaternized amino alkyl ester of acrylic or methacrylic acid is added to the paper pulp.
  • a water-soluble, linear, cationic polymer based on a quaternized amino alkyl ester of acrylic or methacrylic acid is added to the paper pulp.
  • the addition of such polymers is said to disperse and separate the pitch-like resins or to retain them in the paper pulp in finely divided form without interference from other additives which may be present in the paper pulp.
  • the pitch-like resins are water-insoluble contaminants.
  • the object of the invention is therefore to fix dissolved or colloidally dissolved contaminants in paper manufacture without having to resort to aluminum sulfate and the known and proven auxiliaries based on cationic polymers as drainage aids, retention aids and flocculants without impairing their effect can still be used.
  • This object is achieved according to claim 1 by the use of polymers (homo- and / or copolymers) based on quaternized dimethylaminopropyl (meth) acrylamide, which are added to the headbox and / or the circulating water, these polymers having an intrinsic viscosity of less than 150 ml / g measured in 10% by weight sodium chloride solution.
  • the polymers used according to the invention advantageously consist of 50 to 100% by weight of quaternized dimethylaminopropyl (meth) acrylamide and 0 to 50% by weight of acrylamide, acrylic acid, methacrylic acid, acrylamidomethylpropanesulfonic acid or from mixtures of the cationic and anionic monomers mentioned.
  • the dimethylaminopropyl (meth) acrylamide is quaternized with the usual known quaternizing agents, e.g. Dimethyl sulfate, dimethyl carbonate, benzyl chloride, methyl chloride or ethyl bromide.
  • quaternizing agents e.g. Dimethyl sulfate, dimethyl carbonate, benzyl chloride, methyl chloride or ethyl bromide.
  • the polymers are used in an amount of 0.05 to 1% by weight, based on the dry weight of the paper produced, in addition to the customary auxiliary in which they are added to the headbox and / or the circulation water.
  • the polymer according to the invention used as a fixing agent is preferably used in an amount of 0.2 to 0.8, based on the dry weight of the paper produced.
  • the total amount of polymer added to fix impurities can advantageously be distributed over various addition points.
  • the polymers used as fixatives according to the invention are preferably used in a neutral manner without the addition of aluminum sulfate. However, it is also quite possible to combine these products with aluminum sulfate according to the pseudo-neutral driving style.
  • the polymers used according to the invention have a particularly advantageous effect in those paper manufacturing processes in which the water cycle is closed to more than 90%.
  • the final temperature of 90 ° C is reached within 5 minutes. After cooling, the product has a viscosity of 1050 mPa.s, the intrinsic viscosity is 120 ml / g.
  • the mixture is heated to 75 ° C. while introducing nitrogen gas. After addition of 0.6 part of potassium peroxodisulfate, the polymerization begins. The final temperature of 92 ° C is reached within 10 minutes. After cooling, the product has a viscosity of 860 mPa.s, the intrinsic viscosity is 75 ml / g.
  • the degree of whiteness is naturally greatest without fixative and is reduced considerably less by the fixative according to the invention than by the comparison substances.
  • Waste paper with a solids concentration of 4% was used. 3 g of dry substance are diluted with tap water (hardness 3.57 mmol / l; 20 ° dH) to a volume of 300 ml. The fixative is diluted to a volume of 300 ml and added to the stock suspension. The suspension is shaken three times. The drainage aid is then diluted to 400 ml and added to the suspension. This system is then poured once and drained in the Schopper-Riegler apparatus. The time for 700 ml of filtrate is determined. With the blank value, the drainage is carried out without fixative and drainage aid, with the zero value without fixative, but with drainage aid. A 25% cationic polyacrylamide is used as a drainage aid.
  • the outlet valve is opened for 30 seconds with further stirring and the filtrate is collected.
  • the non-retained fine material is determined by drying. The retention is stated as a percentage of the rented fine material in the total fine material.
  • the waste paper stock with a solids concentration of 4% is diluted in an amount of 2.5 g dry to 500 ml volume with tap water.
  • the fixative is added in an amount of 0.4%, based on dry substance, as a 0.5% solution and stirred for 30 seconds with a magnetic stirrer at 500 rpm.
  • the drainage aid a 25% cationic polyacrylamide, is added in an amount of 0.03% as a 0.01% solution and stirred for a further 30 seconds.
  • 4 liters of tap water are placed in the sheet former and made to bubble by blowing in air. Now the stock suspension is added and, after thorough mixing, suctioned off.
  • the cover card is placed over the sheet formed and the sheet is pulled off the screen. It is then dried for 10 minutes in a vacuum dryer, then for 5 minutes in a drying cabinet at 110 ° C. The zero value is obtained without fixative.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Surgical Instruments (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Water Treatment By Sorption (AREA)

Claims (7)

  1. Procédé de fixation de substances perturbatrices ou gênantes dissoutes ou colloïdalement dissoutes au cours de la fabrication du papier par l'addition d' agents de fixation ou fixateurs, caractérisé en ce que l'on utilise, à titre d'agents de fixation ou fixateurs, des polymères qui sont constitués de
    a) 50 à 100% en poids de diméthylaminopropylacrylamide et de diméthylaminopropylméthacrylamide, quaternisé et
    b) 0 à 50% en poids d'acrylamide, d'acide acrylique, d'acide méthacrylique, d'acide acrylamidométhylpropanesulfonique, ou de mélanges de ces monomères,
    où ces polymères présentent une viscosité limite inférieure à 150 ml/g, comme mesurée dans une solution à 10% en poids de chlorure de sodium.
  2. Procédé suivant la revendication 1, caractérisé en ce que l'on utilise les polymères en une proportion de 0,5 à 1% en poids, de préférence 0,2 à 0,8% en poids, par rapport au poids à sec du papier fabriqué.
  3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que le diméthylaminopropyl(méth)-acrylamide quaternisé a été quaternisé avec du sulfate de diméthyle, du chlorure de méthyle, du bromure d'éthyle, du carbonate de diméthyle ou du chlorure de benzyle.
  4. Procédé suivant la revendication 1, caractérisé en ce que la quantité totale du polymère ajouté est répartie sur divers endroits d'addition.
  5. Procédé suivant la revendication 1, caractérisé en ce que les polymères s'utilisent en combinaison avec des adjuvants pour papier cationiques.
  6. Procédé suivant la revendication 1, caractérisé en ce que l'on utilise les polymères en combinaison avec du sulfate d'aluminium.
  7. Procédé suivant la revendication 1, caractérisé en ce que le circuit d'eau est fermé à raison de plus de 90% au cours de la fabrication du papier.
EP90102772A 1989-02-18 1990-02-13 Procédé pour la fixation d'impuretés dans la fabrication du papier Expired - Lifetime EP0384268B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905049A DE3905049A1 (de) 1989-02-18 1989-02-18 Verfahren zur stoerstoffixierung bei der papierherstellung
DE3905049 1989-02-18

Publications (2)

Publication Number Publication Date
EP0384268A1 EP0384268A1 (fr) 1990-08-29
EP0384268B1 true EP0384268B1 (fr) 1994-06-08

Family

ID=6374441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102772A Expired - Lifetime EP0384268B1 (fr) 1989-02-18 1990-02-13 Procédé pour la fixation d'impuretés dans la fabrication du papier

Country Status (10)

Country Link
EP (1) EP0384268B1 (fr)
JP (1) JP2854072B2 (fr)
AT (1) ATE106964T1 (fr)
AU (1) AU634208B2 (fr)
CA (1) CA2010189C (fr)
DE (2) DE3905049A1 (fr)
DK (1) DK0384268T3 (fr)
ES (1) ES2055181T3 (fr)
FI (1) FI100117B (fr)
HU (1) HUT53165A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991015260A1 (fr) * 1990-03-30 1991-10-17 Alza Corporation Dispositif et procede d'administration iontophoretique de medicaments
DE4409580A1 (de) * 1994-03-21 1995-09-28 Bayer Ag Verfahren zur Störstoffixierung bei der Papierherstellung
JP4594656B2 (ja) * 2004-06-10 2010-12-08 油化産業株式会社 ピッチコントロール剤

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7308872A (fr) * 1972-07-12 1974-01-15
US4190491A (en) * 1976-08-02 1980-02-26 Rohm And Haas Company Process for controlling pitch in papermaking
ZA774417B (en) * 1976-08-02 1978-08-30 Rohm & Haas Method of controlling pitch
JPS5916563B2 (ja) * 1976-11-04 1984-04-16 日東化学工業株式会社 水溶性カチオン重合体の製法
AU8040082A (en) * 1981-02-17 1982-08-26 Calgon Corporation Reducing deposition of resins in paper production
AU8039982A (en) * 1981-02-17 1982-08-26 Calgon Corporation Reducing deposition of resins in paper production
US4391932A (en) * 1982-01-22 1983-07-05 Nalco Chemical Company Polycationic latices of dimethylaminopropyl-acrylamide, and their use of as sludge dewatering agents and/or paper retention aids
US4444971A (en) * 1983-07-25 1984-04-24 Texaco Inc. Acrylic and methacrylic quaternary chloromethyl ammonium chloride cationic monomers and polymers thereof
DE3544909A1 (de) * 1985-12-19 1987-06-25 Stockhausen Chem Fab Gmbh Copolymere aus acrylamid und dimethylaminopropylacrylamid als flockungsmittel und verfahren zum entwaessern von klaerschlaemmen unter verwendung dieser flockungsmittel
DE3620065A1 (de) * 1986-06-14 1987-12-17 Basf Ag Verfahren zur herstellung von papier, pappe und karton
DE3627407C2 (de) * 1986-08-13 1994-05-19 Steinbeis Temming Papier Gmbh Verfahren zur Reinigung von Wasserkreisläufen bei der Halbstoff- und Papierherstellung
DE3704173A1 (de) * 1987-02-11 1988-08-25 Wolff Walsrode Ag Neue mittel fuer die papierherstellung
JPS6461595A (en) * 1987-08-28 1989-03-08 Sanyo Chemical Ind Ltd Papermaking filterability enhancer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Wochenblatt für Papierfabrikation 112, Nr. 2, 1984, DE; W. Auhorn "Das Störstoff-Problem bei Verringerung der spezifischen Abwassermenge", Seiten 37-48 *

Also Published As

Publication number Publication date
CA2010189A1 (fr) 1990-08-18
HU900837D0 (en) 1990-05-28
AU4981590A (en) 1990-08-23
CA2010189C (fr) 2001-04-17
AU634208B2 (en) 1993-02-18
JPH02259195A (ja) 1990-10-19
FI100117B (fi) 1997-09-30
ATE106964T1 (de) 1994-06-15
DE3905049A1 (de) 1990-08-23
EP0384268A1 (fr) 1990-08-29
ES2055181T3 (es) 1994-08-16
DK0384268T3 (da) 1994-10-03
DE59005979D1 (de) 1994-07-14
JP2854072B2 (ja) 1999-02-03
HUT53165A (en) 1990-09-28
FI900785A0 (fi) 1990-02-16

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