EP0357574A2 - Verfahren zur Papierherstellung - Google Patents

Verfahren zur Papierherstellung Download PDF

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Publication number
EP0357574A2
EP0357574A2 EP89850252A EP89850252A EP0357574A2 EP 0357574 A2 EP0357574 A2 EP 0357574A2 EP 89850252 A EP89850252 A EP 89850252A EP 89850252 A EP89850252 A EP 89850252A EP 0357574 A2 EP0357574 A2 EP 0357574A2
Authority
EP
European Patent Office
Prior art keywords
colloid
process according
aluminate
anionic
cationic
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
EP89850252A
Other languages
English (en)
French (fr)
Other versions
EP0357574A3 (de
EP0357574B1 (de
Inventor
Hans Erik Johansson
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.)
Nouryon Pulp and Performance Chemicals AB
Original Assignee
Eka Nobel AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20373187&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0357574(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eka Nobel AB filed Critical Eka Nobel AB
Priority to AT89850252T priority Critical patent/ATE99010T1/de
Publication of EP0357574A2 publication Critical patent/EP0357574A2/de
Publication of EP0357574A3 publication Critical patent/EP0357574A3/de
Application granted granted Critical
Publication of EP0357574B1 publication Critical patent/EP0357574B1/de
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
    • D21H17/46—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
    • 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
    • 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

Definitions

  • the present invention relates to a process for the production of paper utilizing an improved retention- and dewatering system. More particularly the invention relates to the use of a combination of a cationic synthetic poly­mer, an anionic inorganic colloid and aluminate as reten­tion- and dewatering system in papermaking.
  • the retention- and dewatering effect in papermaking is improved if an aluminate is used in combination with cationic, synthetic polymer and an anionic inorganic colloid.
  • the dewatering effect is increased the speed of the papermachine can be increased and, further, less water will have to be dried off in the drying section of the paper machine.
  • the present invention thus relates to a process for the production of paper by forming and dewatering a suspen­sion of cellulose containing fibres, and optionally fill­ers, on a wire whereby the forming and dewatering takes place in the presence of an anionic inorganic colloid, an aluminate and a cationic synthetic polymer.
  • the three components can be added to the fibre stock in arbitrary order.
  • the best effect is obtained if the aluminate is added to the stock first, followed by addition of cationic synthetic polymer and then the anionic inor­ganic colloid.
  • a considerable improvement, in comparison with known technique, is obtained also when the anionic inorganic colloid is first added to the stock and the cationic polymer and the aluminate are added subsequently, in any order.
  • Separate addition of the three respective components is preferred although it is possible to pre-mix two of the components before the addition.
  • cationic synthetic polymers for use according to the present invention such cationic, organic nitrogen containing polymers which are conventionally used as retention agents and/or wet strength agents in papermaking are suitable. Particularly suitable are cationic polyacryl­amides, polyethyleneimines, polyamine resins and polyamido­amine resins etc. Polyamine resins and polyamidoamine resins are suitably used in their epichlorohydrine modified form. Other cationic synthetic polymers which can also be used are the cationic melamine-formaldehyde and urea-­formaldehyde wet strength resins.
  • the amount of the cat­ionic synthetic polymer should suitably be within the range of from 0.01 to 3 per cent by weight, preferably within the range of from 0.03 to 2 per cent by weight, based on dry fibres and optional fillers.
  • the anionic inorganic colloids which are used are per se previously known for use in papermaking.
  • colloids can be mentioned montmorillonite, ben­tonite, titanyl sulphate sols, silica sols, aluminum modified silica sols or aluminum silicate sols.
  • colloid and colloidal indicate very small particles.
  • the particles of the anionic substances should suitably have a specific surface area above 50 m2/g, more suitably above 100 m2/g, and preferably within the range of 50 to 1000 m2/g.
  • Silica based colloids are the preferred anionic inor­ ganic colloid.
  • silica based colloids are the silica sols with colloidal particles as disclosed in the European patent 41056, which is hereby incorporated by reference in this application, and the aluminum containing silica sols which are disclosed in the European patent application 0218674, which likewise is incorporated by reference.
  • the colloidal silica in the sols should preferivelyably have a specific surface area of 50 to 1000 m2/g and more preferably of about 100 to 1000 m2/g, and the best results have been obtained when the specific surface area has been about 300 to 700 m2/g.
  • the colloidal silica particles should suitably have a particle size below 20 nm and preferably from about 10 down to about 1 nm (a colloidal silica particle having a specific surface area of about 550 m2/g corresponds to an average particle size of about 5 nm).
  • a colloidal silica particle having a specific surface area of about 550 m2/g corresponds to an average particle size of about 5 nm.
  • the silica sol can be stabilized with alkali in a molar ratio of SiO2:M2O of from 10:1 to 300:1, preferably 15:1 to 100:1 (M is an ion from the group Na, K, Li and NH4).
  • colloidal particles which have at least a surface layer of aluminum silicate or aluminum modified silica sol, so that the surface groups of the particles contain silicon and aluminum atoms in a ratio of from 9.5:0.5 to 7.5:2.5 and the given surfaces and particle sizes also apply to these sols.
  • Silica sols which fulfil the above given specific­ations are available commercially, eg from Eka Nobel AB.
  • the amount of anionic colloid which is added to the stock should suitably be within the range of from 0.005 to 2 per cent by weight, preferably from 0.01 to 0.4 per cent by weight, based on dry cellulose fibres and optional fillers.
  • the concentration of the colloid, preferably colloidal silica, in the sol added to the stock is not critical. From a practical point of view it is suitable that the sols at the addition to the stock have a con­centration of from 0.05 to 5.0 per cent by weight.
  • Aluminate refers to alkali aluminate which per se is well-known for use in paper production, particularly for hydrophobing with rosin.
  • Sodium aluminate (Na2Al2O4) is preferably used, but potassium aluminate can of course also be used even if is less advantageous from an economical point of view.
  • the amount of aluminate can vary within wide limits.
  • the addition of aluminate to the stock is suitably made in the form of aqueous solutions and the concentration in the solutions is not critical but is adjusted with regard to practical considerations. According to the invention it has been found that already very small amounts of aluminate, with regard to the amount of anionic inor­ganic colloid, give considerable improvements in the dewatering effect.
  • the improved retention- and dewatering effect with the system of the invention is obtained over a broad pH range for the stock.
  • the pH can be within the range from about 4 to about 10.
  • the pH is suitably above 5 and preferivelyably within the range of from 6 to 9.
  • the pH of the stock can be adjusted for example by addition of sodium hydroxide.
  • alkaline buffering fillers are used, for example chalk, a suitable pH is normally reached without adjustments.
  • Other fillers than chalk can of course also be used, but then care has to be taken so that the pH of the stock is kept within the above given limits.
  • mineral fillers of conventional types can be used, for example kaolin, titanium dioxide, gypsum, chalk and talcum.
  • the term "mineral filler” is herein used to include, in addition to these fillers, also wollastonite and glass fibres and also mineral low density fillers, such as expanded perlite.
  • the mineral filler is usually added in the form of an aqueous slurry in conventional concen­trations used for such fillers.
  • the filler can optionally be treated before the addition to the stock with components of the dewatering- and retention- system of the invention, for example by treatment with the cationic synthetic polymer and the aluminate or the inorganic colloid, where­after the remaining component is added to the stock.
  • the three-component system of the invention can be used at production of paper from different types of stocks of cellulose containing fibres.
  • the stocks should suitably contain at least 50 per cent by weight of cellulose con­taining fibres.
  • the three-component system can for example be used for stocks of fibres from chemical pulp, such as sulphate and sulphite pulp, thermomechanical pulp, refiner pulp and groundwood pulp from as well hardwood as softwood. It can of course also be used for stocks from recycled fibres.
  • the terms paper and papermaking, which are used herein do of course not only include paper and its produc­tion, but also other cellulose fibre containing sheet or web form products, such as pulp sheet, board and cardboard and their production.
  • the process according the invention can be carried out in per se known manner and with other additions to the fibre stock, such as sizing agents etc.
  • the stock was based on bleached birch/pine sulphate pulp (60:40) and contained 30 per cent by weight of chalk.
  • the pH of the stock was 8.5 and CSF was 300 ml.
  • the anionic colloid was an alkali stabilized silica sol with a specific surface area of 500 m2/g.
  • the cationic synthetic polymer was a cationic polyacrylamide of medium cationicity sold by Allied Colloids under the name Percol 292.
  • the sodium aluminate was added in the form of a 0.025% aqueous solu­tion and the given amounts of aluminate are expressed as kg Al2O3.
  • the additions of chemicals were made to 1 l diluted stock (about 0.3%) with intervals of 15 seconds under agitation in the order aluminate, cationic polymer, inor­ganic colloid.
  • the flocked stock was transferred to the freeness apparatus and measurements were made 15 seconds after the last addition.
  • the water which is collected is a measurement of the dewatering effect and is expressed in ml Canadian Standard Freeness (CSF).
  • CSF Canadian Standard Freeness
  • a groundwood stock was used which did not contain any fillers.
  • the cationic polymer was the same polyacrylamide as in Example 1.
  • the anionic colloid was an aluminum modified, 15% alkali stabilized, silica sol where the surface of the colloidal particles had been modified with 9% aluminum atoms and the surface area of the particles was 500 m2/g.
  • the order of addition was sodium aluminate, cationic polymer followed by anionic colloid. Tests were made both with a stock pH of 6 and a stock pH of 7.5 whereby the pH had been adjusted with diluted H2SO4 and diluted NaOH respectively.
  • Example 3 a groundwood stock with addition of 0.5 g/1 of Na2SO4.10H2O was used as in Example 3.
  • the pH of the stock was 6.5 and the added chemicals were sodium aluminate, a cationic polyethylene imine sold by BASF under the name Polymin SK and an anionic colloid which was a bentonite colloid having a specific surface area of from about 400 to 800 m2/g in water.

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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)
  • Polarising Elements (AREA)
  • Electronic Switches (AREA)
EP89850252A 1988-09-01 1989-08-09 Verfahren zur Papierherstellung Expired - Lifetime EP0357574B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89850252T ATE99010T1 (de) 1988-09-01 1989-08-09 Verfahren zur papierherstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803065A SE467627B (sv) 1988-09-01 1988-09-01 Saett vid framstaellning av papper
SE8803065 1988-09-01

Publications (3)

Publication Number Publication Date
EP0357574A2 true EP0357574A2 (de) 1990-03-07
EP0357574A3 EP0357574A3 (de) 1991-10-23
EP0357574B1 EP0357574B1 (de) 1993-12-22

Family

ID=20373187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89850252A Expired - Lifetime EP0357574B1 (de) 1988-09-01 1989-08-09 Verfahren zur Papierherstellung

Country Status (13)

Country Link
EP (1) EP0357574B1 (de)
JP (1) JP2521539B2 (de)
AT (1) ATE99010T1 (de)
AU (1) AU605997B2 (de)
BR (1) BR8904283A (de)
CA (1) CA1334324C (de)
DE (1) DE68911626T2 (de)
ES (1) ES2048323T3 (de)
FI (1) FI90448C (de)
NO (1) NO171567C (de)
NZ (1) NZ230427A (de)
PT (1) PT91611B (de)
SE (1) SE467627B (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447604A (en) * 1989-11-09 1995-09-05 Eka Nobel Ab Silica sols, a process for the production of silica sols and use of the sols
US5496440A (en) * 1991-07-02 1996-03-05 Eka Nobel Ab Process for the manufacture of paper
EP0705939A1 (de) * 1994-10-05 1996-04-10 Technocell Dekor GmbH & Co. KG Basispapier für dekorative Beschichtungssysteme
EP0748897A2 (de) * 1995-06-15 1996-12-18 Eka Chemicals AB Verfahren zur Herstellung von Papier
US5595630A (en) * 1995-08-31 1997-01-21 E. I. Du Pont De Nemours And Company Process for the manufacture of paper
WO1997018351A1 (en) * 1995-11-15 1997-05-22 Eka Chemicals Ab A process for the production of paper
US5846384A (en) * 1995-06-15 1998-12-08 Eka Chemicals Ab Process for the production of paper
US6379501B1 (en) 1999-12-14 2002-04-30 Hercules Incorporated Cellulose products and processes for preparing the same
WO2003083212A1 (fr) * 2002-04-03 2003-10-09 Seiko Pmc Corporation Procede de production de papier et agent pour ameliorer le rendement d'un tel procede
US7169261B2 (en) 1999-05-04 2007-01-30 Akzo Nobel N.V. Silica-based sols
US7919535B2 (en) 1999-05-04 2011-04-05 Akzo Nobel N.V. Silica-based sols
CN103556532A (zh) * 2013-10-31 2014-02-05 东莞理文造纸厂有限公司 一种造纸用助留剂及其制备方法
EP1620599B2 (de) † 2003-04-15 2015-02-18 Kemira Oyj Verfahren zur herstellung von papier

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795531A (en) * 1987-09-22 1989-01-03 Nalco Chemical Company Method for dewatering paper
US4927498A (en) * 1988-01-13 1990-05-22 E. I. Du Pont De Nemours And Company Retention and drainage aid for papermaking
US8245359B2 (en) 2006-12-28 2012-08-21 Tokyo Kinzoku Industry Co., Ltd. Clip

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000100A1 (en) * 1984-06-07 1986-01-03 Eka Ab Papermaking process
WO1986005826A1 (en) * 1985-04-03 1986-10-09 Eka Nobel Aktiebolag Papermaking process
WO1988006659A1 (en) * 1987-03-03 1988-09-07 Eka Nobel Ab A process for the production of paper
US4795531A (en) * 1987-09-22 1989-01-03 Nalco Chemical Company Method for dewatering paper
WO1989006638A2 (en) * 1988-01-13 1989-07-27 E.I. Du Pont De Nemours And Company Retention and drainage aid for papermaking

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461156B (sv) * 1988-05-25 1990-01-15 Eka Nobel Ab Saett foer framstaellning av papper varvid formning och avvattning aeger rum i naervaro av en aluminiumfoerening, ett katjoniskt retentionsmedel och en polymer kiselsyra

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000100A1 (en) * 1984-06-07 1986-01-03 Eka Ab Papermaking process
WO1986005826A1 (en) * 1985-04-03 1986-10-09 Eka Nobel Aktiebolag Papermaking process
WO1988006659A1 (en) * 1987-03-03 1988-09-07 Eka Nobel Ab A process for the production of paper
US4795531A (en) * 1987-09-22 1989-01-03 Nalco Chemical Company Method for dewatering paper
WO1989006638A2 (en) * 1988-01-13 1989-07-27 E.I. Du Pont De Nemours And Company Retention and drainage aid for papermaking

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5447604A (en) * 1989-11-09 1995-09-05 Eka Nobel Ab Silica sols, a process for the production of silica sols and use of the sols
US5496440A (en) * 1991-07-02 1996-03-05 Eka Nobel Ab Process for the manufacture of paper
US5679219A (en) * 1994-10-05 1997-10-21 Technocell Dekor Gmbh & Co. Kg Base paper for decorative coating systems
EP0705939A1 (de) * 1994-10-05 1996-04-10 Technocell Dekor GmbH & Co. KG Basispapier für dekorative Beschichtungssysteme
EP0748897A2 (de) * 1995-06-15 1996-12-18 Eka Chemicals AB Verfahren zur Herstellung von Papier
US5846384A (en) * 1995-06-15 1998-12-08 Eka Chemicals Ab Process for the production of paper
EP0748897A3 (de) * 1995-06-15 1997-07-02 Eka Chemicals Ab Verfahren zur Herstellung von Papier
US5595630A (en) * 1995-08-31 1997-01-21 E. I. Du Pont De Nemours And Company Process for the manufacture of paper
WO1997018351A1 (en) * 1995-11-15 1997-05-22 Eka Chemicals Ab A process for the production of paper
US6103064A (en) * 1995-11-15 2000-08-15 Eka Chemicals Ab Process for the production of paper
US7169261B2 (en) 1999-05-04 2007-01-30 Akzo Nobel N.V. Silica-based sols
US7919535B2 (en) 1999-05-04 2011-04-05 Akzo Nobel N.V. Silica-based sols
US8835515B2 (en) * 1999-05-04 2014-09-16 Akzo Nobel, N.V. Silica-based sols
US6379501B1 (en) 1999-12-14 2002-04-30 Hercules Incorporated Cellulose products and processes for preparing the same
WO2003083212A1 (fr) * 2002-04-03 2003-10-09 Seiko Pmc Corporation Procede de production de papier et agent pour ameliorer le rendement d'un tel procede
US7504001B2 (en) 2002-04-03 2009-03-17 Seiko Pmc Corporation Method for producing paper and agent for improving yield
EP1620599B2 (de) † 2003-04-15 2015-02-18 Kemira Oyj Verfahren zur herstellung von papier
CN103556532A (zh) * 2013-10-31 2014-02-05 东莞理文造纸厂有限公司 一种造纸用助留剂及其制备方法
CN103556532B (zh) * 2013-10-31 2016-01-20 东莞理文造纸厂有限公司 一种造纸用助留剂及其制备方法

Also Published As

Publication number Publication date
SE8803065D0 (sv) 1988-09-01
FI894075A0 (fi) 1989-08-30
FI90448B (fi) 1993-10-29
AU605997B2 (en) 1991-01-24
EP0357574A3 (de) 1991-10-23
PT91611B (pt) 1995-05-31
EP0357574B1 (de) 1993-12-22
FI894075A (fi) 1990-03-02
PT91611A (pt) 1990-03-30
SE8803065L (sv) 1990-03-02
DE68911626D1 (de) 1994-02-03
JPH0299692A (ja) 1990-04-11
FI90448C (fi) 1994-02-10
JP2521539B2 (ja) 1996-08-07
NO171567B (no) 1992-12-21
ES2048323T3 (es) 1994-03-16
NO893500D0 (no) 1989-08-31
DE68911626T2 (de) 1994-04-07
NO171567C (no) 1993-03-31
ATE99010T1 (de) 1994-01-15
AU4084089A (en) 1990-03-29
BR8904283A (pt) 1990-04-17
NZ230427A (en) 1991-06-25
CA1334324C (en) 1995-02-14
SE467627B (sv) 1992-08-17
NO893500L (no) 1990-03-02

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