DE4320453A1 - Process for controlling the settling of resins from pulp and / or pulp suspensions - Google Patents

Process for controlling the settling of resins from pulp and / or pulp suspensions

Info

Publication number
DE4320453A1
DE4320453A1 DE4320453A DE4320453A DE4320453A1 DE 4320453 A1 DE4320453 A1 DE 4320453A1 DE 4320453 A DE4320453 A DE 4320453A DE 4320453 A DE4320453 A DE 4320453A DE 4320453 A1 DE4320453 A1 DE 4320453A1
Authority
DE
Germany
Prior art keywords
pulp
cellulose
resins
starch
settling
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.)
Withdrawn
Application number
DE4320453A
Other languages
German (de)
Inventor
Klaus Hornfeck
Heinz-Guenther Dr Schulte
Dieter Kaps
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to DE4320453A priority Critical patent/DE4320453A1/en
Priority to PCT/EP1994/001920 priority patent/WO1995000704A1/en
Priority to KR1019950705771A priority patent/KR960703187A/en
Priority to JP7502400A priority patent/JPH08511831A/en
Priority to EP94918868A priority patent/EP0705366A1/en
Publication of DE4320453A1 publication Critical patent/DE4320453A1/en
Priority to FI956115A priority patent/FI956115A0/en
Withdrawn legal-status Critical Current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
    • D21H21/00Non-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
    • D21H21/02Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control

Description

Gebiet der ErfindungField of the Invention

Die Erfindung betrifft ein Verfahren zur Kontrolle des Absetzens von Harzen aus Zellstoff- und/oder Holzstoff-Sus­ pensionen.The invention relates to a method for controlling the Settling of resins from pulp and / or wood pulp susp pensions.

Stand der TechnikState of the art

Die im Zellstoff und Holzstoff vorhandenen Harze enthalten je nach Holzsorte einen Anteil von etwa 1-5 Gew.-% an soge­ nannten schädlichen Harzen (vergl. J. Weigl et al., Das Pa­ pier, 1986, S. V52-V62). Diese können in kolloidaler nichtgebundener Form vorliegen oder an den Papierfasern haften. Die klebenden Eigenschaften der Harze können nun ei­ nerseits beim Prozeß der Herstellung von Zellstoff und Holz­ stoff selbst, als auch beim der späteren Papierherstellung negativ in Erscheinung treten.The resins present in the pulp and wood pulp each contain a share of about 1-5% by weight of so-called named harmful resins (see J. Weigl et al., Das Pa pier, 1986, pp. V52-V62). These can be colloidal unbound form or on the paper fibers be liable. The adhesive properties of the resins can now on the other hand in the process of manufacturing pulp and wood fabric itself, as well as in later paper production appear negatively.

Um diesen Schwierigkeiten zu begegnen, hat man etwa kationaktive Produkte als Harzverhinderungsmittel eingesetzt. To counter these difficulties, one has about cationic products used as a resin preventing agent.  

So ist etwa aus dem "Fachlexikon Papier - Pappe - Zellulose" (Verlag Ringier, Zofingen CH, 1967, dort S. 97) bekannt, daß durch derartige Produkte Stoffkreisläufe, Siebe, Pressen und Filze saubergehalten und auftretende Harzschwierigkeiten bei der Zellstoff- und Papierherstellung verhindert werden kön­ nen. Dem Hilfsmittel wird dabei eine fixierende Wirkung zu­ geschrieben.For example, from the "Specialist dictionary paper - cardboard - cellulose" (Verlag Ringier, Zofingen CH, 1967, p. 97 there) known that through such products material cycles, sieves, presses and Felt kept clean and resin problems occurring the pulp and paper production can be prevented nen. The aid has a fixing effect written.

Im Rahmen der vorliegenden Erfindung sind diejenigen Probleme angesprochen, die bei der Handhabung wäßriger Suspensionen von Primärfaserstoff, wozu der Fachmann Zellstoff und Holz­ stoff zählt, durch die klebenden Harze entstehen: Die kle­ benden Harze setzen sich in Stoffleitungen, an Wänden, Sieben und Filzen fest und führen zu Störungen im Prozeßablauf der Herstellung der Primärfasern.Those problems are within the scope of the present invention addressed that when handling aqueous suspensions of primary pulp, including the specialist pulp and wood fabric counts, through which adhesive resins are created: the kle Resining resins settle in fabric lines, on walls, screens and felting and lead to disruptions in the process flow of Manufacture of primary fibers.

Beschreibung der ErfindungDescription of the invention

Aufgabe der vorliegenden Erfindung war es daher, ein Verfah­ ren zur Kontrolle des Absetzens von Harzen aus Zellstoff- und/oder Holzstoff-Suspensionen zu entwickeln. Darüber hinaus war anzustreben, daß die bei dem Verfahren einzusetzenden Hilfsstoffe weitgehend biologisch verträglich sind und daher unter ökologischen Gesichtspunkten den Anforderungen ent­ sprechen, die heutzutage in der papierverarbeitenden Indu­ strie zunehmend wichtiger werden.The object of the present invention was therefore to provide a method to control the settling of resins from cellulose and / or to develop pulp suspensions. Furthermore the aim was that those to be used in the procedure Auxiliaries are largely biocompatible and therefore the requirements from an ecological point of view speak that nowadays in the paper processing industry strie become increasingly important.

Diese Aufgabe wurde erfindungsgemäß gelöst durch ein Verfah­ ren zur Kontrolle des Absetzens von Harzen aus Zellstoff- und/oder Holzstoff-Suspensionen, wobei man der Zellstoff- und/oder Holzstoff-Suspension eine wirksame Menge eines Ab­ bauproduktes von nativer Stärke zudosiert.This object was achieved according to the invention by a method to control the settling of resins from cellulose and / or wood pulp suspensions, the pulp  and / or wood pulp suspension an effective amount of an Ab building product of native strength metered.

Gegenstand der vorliegenden Erfindung ist daher ein Verfahren zur Kontrolle des Absetzens von Harzen aus zellstoff-und/oder Holzstoff-Suspensionen, das dadurch gekennzeichnet ist, daß man der Suspension eine wirksame Menge eines Abbauproduktes von nativer Stärke zudosiert.The present invention therefore relates to a method to control the settling of resins from cellulose and / or Pulp suspensions, which is characterized in that one of the suspension an effective amount of a degradation product dosed of native starch.

Unter Abbauprodukten von nativer Stärke sind im Rahmen der vorliegenden Erfindung diejenigen Produkte zu verstehen, die durch thermischen, hydrolytischen oder enzymatischen Abbau von nativer Stärke zugänglich sind und ein niedrigeres mitt­ leres Molekulargewicht als die zugrundeliegende native Stärke sowie ein höheres mittleres Molgewicht als Glucose, dem Pro­ dukt eines vollständigen Abbaus aufweisen. Ausdrücklich sei jedoch festgestellt, daß die Produkte einer chemischen Derivatisierung wie der Veresterung, Veretherung, Acetylierung, usw. nicht unter die hier verwendete Definition der Abbauprodukte von nativer Stärke fallen.Degradation products of native starch include: present invention to understand those products that through thermal, hydrolytic or enzymatic degradation of native strength are accessible and a lower mitt lower molecular weight than the underlying native starch as well as a higher average molecular weight than glucose, the Pro product of complete dismantling. Be express however, found that the products of a chemical Derivatization such as esterification, etherification, Acetylation, etc. does not fall under the definition used here of the degradation products fall from native starch.

Im Rahmen dieser Erfindung sind diejenigen Abbauprodukte na­ tiver Stärke bevorzugt, die ein mittleres Molekulargewicht im Bereich von 1200 bis 600 000 aufweisen. Die bevorzugte Art der Herstellung dieser Produkte ist die saure und die enzy­ matische Hydrolyse oder eine Kombination dieser Methoden.In the context of this invention, those degradation products are na tive starch preferred, which has an average molecular weight in Range from 1200 to 600,000. The preferred type The manufacture of these products is acidic and enzy Matic hydrolysis or a combination of these methods.

Die Art der nativen Stärke, die der zur Herstellung der erfindungsgemäß geeigneten Abbauprodukte herangezogen wird, unterliegt an sich keiner besonderen Einschränkung. So können z. B. Kartoffelstärke, Maisstärke, Reisstärke oder Cannastärke als Ausgangsstoffe herangezogen werden. Es ist jedoch beson­ ders bevorzugt, Abbauprodukte von Kartoffelstärke einzuset­ zen.The type of native starch used to produce the degradation products suitable according to the invention are used, is not subject to any particular restriction. So can e.g. B. potato starch, corn starch, rice starch or canna starch  are used as starting materials. However, it is special preferred to use degradation products from potato starch Zen.

Es hat sich ferner herausgestellt, daß die Wirkung der erfindungsgemäß geeigneten Abbauprodukte von nativer Stärke dadurch verbessert werden kann, daß man das Verfahren zu­ sätzlich in Gegenwart eines Cellulosederivats durchführt. Dabei sind als Cellulosederivat Carboxymethylcellulose, Methylhydroxypropylcellulose, Methylcellulose, Methylhydroxyethylcellulose, Hydroxyethylcellulose sowie Mi­ schungen dieser Stoffe besonders bevorzugt.It has also been found that the effect of Degradation products of native starch suitable according to the invention can be improved by adding the method additionally carried out in the presence of a cellulose derivative. The cellulose derivative here is carboxymethyl cellulose, Methyl hydroxypropyl cellulose, methyl cellulose, Methylhydroxyethyl cellulose, hydroxyethyl cellulose and Mi mixtures of these substances are particularly preferred.

Ein weiterer Gegenstand der vorliegenden Erfindung ist die Verwendung von Abbauprodukten von nativer Stärke zur Kon­ trolle des Absetzens von Harzen aus Zellstoff- und/oder Holzstoff-Suspensionen.Another object of the present invention is Use of degradation products of native starch for con trolls of settling resins from pulp and / or Pulp suspensions.

Die erfindungsgemäßen Abbauprodukte von nativer Stärke können im Prinzip an jeder Stelle des gesamten Prozesses der Her­ stellung von Primärfasern zudosiert werden. Sie werden dabei entweder in Form fester Teilchen oder in Form einer wäßrigen Lösung oder Dispersion zudosiert. Die jeweils erforderliche wirksame Menge der Abbauprodukte der nativen Stärken hängt dabei davon ab, in welchem Ausmaß die zu verarbeitenden wäß­ rigen Suspensionen der Primärfasern klebende Harze enthalten. In der Regel werden die erfindungsgemäßen Abbauprodukte na­ tiver Stärke jedoch in einer Menge im Bereich von 0,001 bis 5,0 Gew.-%, vorzugsweise 0,1 bis 1,0 Gew.-%, - bezogen auf den Primärfaserstoff - eingesetzt.The degradation products of native starch according to the invention can in principle at every point in the entire process of manufacturing position of primary fibers can be added. You will be there either in the form of solid particles or in the form of an aqueous one Solution or dispersion metered. The required one effective amount of degradation products depends on the native starches depending on the extent to which the water to be processed Other suspensions of the primary fibers contain adhesive resins. As a rule, the degradation products according to the invention are na tive starch, however, in an amount in the range of 0.001 to 5.0% by weight, preferably 0.1 to 1.0% by weight, based on the primary fiber - used.

Claims (7)

1. Verfahren zur Kontrolle des Absetzens von Harzen aus Zell­ stoff- und/oder Holzstoff-Suspensionen, dadurch gekenn­ zeichnet, daß man der Suspension eine wirksame Menge eines Abbauproduktes von nativer Stärke zudosiert.1. A method for controlling the settling of resins from cellulose and / or pulp suspensions, characterized in that the suspension is metered in an effective amount of a degradation product of native starch. 2. Verfahren nach Anspruch 1, wobei man ein Abbauprodukt von Kartoffelstärke einsetzt.2. The method according to claim 1, wherein a degradation product of Potato starch is used. 3. Verfahren nach Anspruch 1 oder 2, wobei das mittlere Mole­ kulargewicht des Abbauprodukts nativer Stärke im Bereich von 1200 bis 600 000 liegt.3. The method of claim 1 or 2, wherein the middle mole Specular weight of the native starch degradation product in the range from 1200 to 600,000. 3. Verfahren nach einem der Ansprüche 1 bis 3, wobei man das Verfahren zusätzlich in Gegenwart eines Cellulosederivats durchführt.3. The method according to any one of claims 1 to 3, wherein one Process additionally in the presence of a cellulose derivative carries out. 4. Verfahren nach Anspruch 4, wobei man ein Cellulosederivat einsetzt, daß ausgewählt ist aus der Gruppe Carboxymethyl­ cellulose, Methylhydroxypropylcellulose, Methylcellulose, Methylhydroxyethylcellulose und Hydroxyethylcellulose.4. The method according to claim 4, wherein a cellulose derivative uses that is selected from the group carboxymethyl cellulose, methyl hydroxypropyl cellulose, methyl cellulose, Methylhydroxyethyl cellulose and hydroxyethyl cellulose. 6. Verwendung von Abbauprodukten von nativer Stärke zur Kon­ trolle des Absetzens von Harzen aus Zellstoff- und/oder Holzstoff-Suspensionen.6. Use of degradation products of native starch for con trolls of settling resins from pulp and / or Pulp suspensions. 7. Verwendung nach Anspruch 6, wobei das Abbauprodukt von na­ tiver Stärke aus Kartoffelstärke hergestellt wurde.7. Use according to claim 6, wherein the degradation product of na starch was made from potato starch.
DE4320453A 1993-06-21 1993-06-21 Process for controlling the settling of resins from pulp and / or pulp suspensions Withdrawn DE4320453A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE4320453A DE4320453A1 (en) 1993-06-21 1993-06-21 Process for controlling the settling of resins from pulp and / or pulp suspensions
PCT/EP1994/001920 WO1995000704A1 (en) 1993-06-21 1994-06-13 Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions
KR1019950705771A KR960703187A (en) 1993-06-21 1994-06-13 METHOD OF MONITORING THE DEPOSITION OF RESINS FROM CELLULOSE AND / OR PAPER-PULP SUSPENSIONS
JP7502400A JPH08511831A (en) 1993-06-21 1994-06-13 Method for controlling sedimentation of resin from cellulose and / or paper pulp suspension
EP94918868A EP0705366A1 (en) 1993-06-21 1994-06-13 Method of monitoring the deposition of resins from cellulose and/or paper-pulp suspensions
FI956115A FI956115A0 (en) 1993-06-21 1995-12-19 Method for controlling resin deposition from cellulose and / or pulp suspensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4320453A DE4320453A1 (en) 1993-06-21 1993-06-21 Process for controlling the settling of resins from pulp and / or pulp suspensions

Publications (1)

Publication Number Publication Date
DE4320453A1 true DE4320453A1 (en) 1994-12-22

Family

ID=6490776

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4320453A Withdrawn DE4320453A1 (en) 1993-06-21 1993-06-21 Process for controlling the settling of resins from pulp and / or pulp suspensions

Country Status (6)

Country Link
EP (1) EP0705366A1 (en)
JP (1) JPH08511831A (en)
KR (1) KR960703187A (en)
DE (1) DE4320453A1 (en)
FI (1) FI956115A0 (en)
WO (1) WO1995000704A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008144304A1 (en) * 2007-05-16 2008-11-27 Buckman Laboratories International, Inc. Methods to control organic contaminants in fibers

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704054C2 (en) * 1997-02-04 2000-08-10 Stockhausen Chem Fab Gmbh Process for the production of fibrous materials with improved properties
US6026356A (en) * 1997-07-03 2000-02-15 Nortel Networks Corporation Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form
US6006189A (en) * 1997-10-10 1999-12-21 Nortel Networks Corporation Method and apparatus for storing and forwarding voice signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102065A (en) * 1961-03-22 1963-08-27 Virginia Chemicals & Smelting Method and composition for dispersing of pitch
CA1316300C (en) * 1988-07-19 1993-04-20 Richard N. Van Oss Method for pacifying stickies in paper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008144304A1 (en) * 2007-05-16 2008-11-27 Buckman Laboratories International, Inc. Methods to control organic contaminants in fibers
US7862688B2 (en) 2007-05-16 2011-01-04 Buckman Laboratories International, Inc. Methods to control organic contaminants in fibers

Also Published As

Publication number Publication date
EP0705366A1 (en) 1996-04-10
JPH08511831A (en) 1996-12-10
KR960703187A (en) 1996-06-19
FI956115A (en) 1995-12-19
WO1995000704A1 (en) 1995-01-05
FI956115A0 (en) 1995-12-19

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