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 suspensionsInfo
- 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- Withdrawn
Links
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
- 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
Description
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.
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.
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)
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)
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)
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)
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 |
-
1993
- 1993-06-21 DE DE4320453A patent/DE4320453A1/en not_active Withdrawn
-
1994
- 1994-06-13 KR KR1019950705771A patent/KR960703187A/en not_active Application Discontinuation
- 1994-06-13 JP JP7502400A patent/JPH08511831A/en active Pending
- 1994-06-13 WO PCT/EP1994/001920 patent/WO1995000704A1/en not_active Application Discontinuation
- 1994-06-13 EP EP94918868A patent/EP0705366A1/en not_active Ceased
-
1995
- 1995-12-19 FI FI956115A patent/FI956115A0/en not_active Application Discontinuation
Cited By (2)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |