EP0828889B9 - Use of agents for cellulose and paper production - Google Patents

Use of agents for cellulose and paper production Download PDF

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Publication number
EP0828889B9
EP0828889B9 EP96916148A EP96916148A EP0828889B9 EP 0828889 B9 EP0828889 B9 EP 0828889B9 EP 96916148 A EP96916148 A EP 96916148A EP 96916148 A EP96916148 A EP 96916148A EP 0828889 B9 EP0828889 B9 EP 0828889B9
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EP
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Prior art keywords
oil
saturated
fatty acid
water emulsions
carbon atoms
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EP96916148A
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German (de)
French (fr)
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EP0828889A1 (en
EP0828889B1 (en
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Frank Siebott
Joachim Werres
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Ineos Composites IP LLC
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Stockhausen GmbH and Co KG
Chemische Fabrik Stockhausen GmbH
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/30—Protecting wire-cloths from mechanical damage
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/32—Washing wire-cloths or felts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/04—Pitch control

Definitions

  • the invention relates to the use of agents for treating machines for pulp, Paper and cardboard manufacture for cleaning these aggregates from adhering impurities from natural resins and / or synthetic polymers as well as prevention the contamination of these units by such impurities.
  • EP 517 360 A1 inhibiting mixtures of surfactants and solvents, preferably fatty acid alkanolamides, ethoxylated compounds, aliphatic Hydrocarbons and orange terpenes of the stock in an amount of 1 - 200 ppm added.
  • solvents preferably fatty acid alkanolamides, ethoxylated compounds, aliphatic Hydrocarbons and orange terpenes of the stock in an amount of 1 - 200 ppm added.
  • the funds used in this way are insufficiently effective, so that the manufacturing process often has to be interrupted in order to clean the machine parts, in particular to make the wire and press section, whereby according to EP 178 340 B1 exclusively Limonene is used as a solvent.
  • dispersing agents are only in closed water cycles limited possible, since the dispersed resin parts do not fully adhere to the anionic cellulose fibers are bound and discharged so that they are increasingly in the process water remain.
  • the cleaning of the felts of the press section is also used proposed by fatty acid imidazolines and according to EP 647 737 A1 these compounds together with ethoxylated nonylphenols and special sulfonates for prevention of deposits of polyamidoamine-epichlorohydrin resins used in felts.
  • EP 0 648 820 A2 describes compositions which are used to remove toners from Paper surfaces, adhesive residues of plastics, for removing plastic coatings and for cleaning metal surfaces from cutting oil residues or colored pencil markings used, as well as used to remove PVC parts attached by adhesives become.
  • the emulsions also contain solvents such as isopropanol, Toluene, benzyl alcohol, methyl ethyl ketone, N-methyl pyrrolidone, di- and triethylene glycol dimethyl ether and 3-methyl-3-methoxybutanol, which are the use of these emulsions in closed systems for reasons of occupational safety and health risks restrict.
  • solvents such as isopropanol, Toluene, benzyl alcohol, methyl ethyl ketone, N-methyl pyrrolidone, di- and triethylene glycol dimethyl ether and 3-methyl-3-methoxybutanol, which are the use of these emulsions in closed systems for reasons of occupational safety and health risks restrict.
  • the object was therefore to eliminate the disadvantages described in detail above and in particular to find means for this, their use in the manufacture of pulp, paper and cardboard with waste paper for the treatment of pulp, paper and board machines is suitable., the machines of adhering agglomerates made of synthetic polymers and to clean natural resins and / or the adherence of such substances from the surface to prevent the machines.
  • the task could be accomplished by using oil-in-water emulsions for treatment, especially for cleaning pulp, paper, cardboard or cardboard machines respectively their parts of the plant from adhering synthetic polymers and natural Resins or to prevent such substances from adhering to the surfaces of such Machines or system parts can be solved.
  • Oil-in-water emulsions are known.
  • the oil component in water by means of suitable known oil-in-water emulsifiers.
  • the hydrophobic phase is predominant the active ingredient.
  • hydrocarbons or hydrocarbon mixtures are Paraffin oil, mineral oil or poly-alpha-olefins.
  • the agents to be used according to the invention are surprisingly used as cleaning agents or as an agent with an impregnating effect against impurities such as adhesives, resins, Wax, fat and / or bitumen repellent effect at any point on the pulp, paper and board machines.
  • the agents according to the invention are used on the surface of the aggregates, in particular treating the sieves, felts in the wet area of the machines and the drying sieves, Guide rollers and drying cylinders in the drying area.
  • the agents according to the invention are preferably used on the material-contacting surface of the units before they come into contact with the fabric and, if necessary, separately for the deck and Back area of the products.
  • the oil-in-water emulsions are used as such or after dilution Water and / or solvents, preferably water-miscible solvents.
  • Water is used for this purpose, the temperatures in the range from 5 to 80 ° C., preferably 20 - 50 ° C.
  • the concentration of the oil-in-water emulsion in aqueous dilution is 1-40% by weight, preferably 5-25% by weight and particularly preferably 10-25% by weight on the aqueous dilution.
  • the diluted emulsion is in an amount of 20 - 500 l, preferably 100 - 400 l per hour and meter working width of the machine in continuous or interval dosing applied, the diluted emulsion in any Way, preferably via a spray tube provided with flat jet nozzles with an overlapping one Spray area is abandoned.
  • the addition can also be added to dryer fabric cleaning systems the emulsion to the wash water.
  • oil-in-water emulsions preferably used according to the invention contain biologically degradable components and are therefore environmentally friendly.
  • the diluted one Emulsion applied in the return of the dryer fabric and, if necessary, the screen before hitting it inflated with air on the paper web.
  • the cleaning effect of the agents keeps when using the agents according to the invention in the Sieve and dryer section of the machines continuously up to the last machine part.
  • the impregnating inhibitory effect against renewed contamination on the aggregate surfaces is product and variety dependent and lasts after the end of the dosage over a period of 4 - 75 hours.
  • the aggregates can be cleaned and impregnated with every change of grade.
  • the contaminants are removed from the screen and the subsequent guide rollers and cylinders solved and partly with the agglomerates being thrown out, especially in the initial phase the treatment removed.
  • the cleaning effect is also on the following machine parts lockable and lasts up to the smoothing cylinder. After the dosage of the diluted Emulsion has an inhibiting effect against adhering contaminants, which lasts about 24 hours.
  • FIG. 1 shows four samples of the sieve, starting from the heavily soiled first sample (0 sample). In sample 2 after 6 Hours at room temperature, with sample 3 after 30 min at 60 ° and with sample 4 after 60 min at 60 ° the cleaning effects are very clearly recognizable. The air permeability of the Siebes was measured. It increases from 320 cfm to 530 cfm in sample 4.
  • the emulsion M was in an aqueous dilution of 1: 6 parts by weight in a daily amount of 30 l in 6 even time intervals applied to the dryer fabric during the production process.
  • the contaminated sieve has been cleaned.
  • the emulsion M On the felt of a paper machine, contaminated by adhesives and resins, consisting of Polyamide and polyester fibers, the emulsion M is diluted with a spray tube applied to 15% by weight with water.
  • the impurities adhering to the surface and in the felt detach, so that the water absorption of the felt with an improved effect takes place and the surface of the paper webs are formed evenly and without false marks becomes.

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  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Detergent Compositions (AREA)

Abstract

The present invention relates to the use of oil-in-water emulsions to clean machines and parts of plants in the production of pulp, paper, paper board, and cardboard and to prevent impurities of adhesives and adherent resins to those units. The emulsion comprises as component of the oil phase at least one of the following substances: 1. a saturated or unsaturated, open-chain or cyclic, normal or isomeric hydrocarbon with 8-30 carbon atoms 2. a saturated or unsaturated fatty alcohol, a saturated or unsaturated fatty acid, a fatty acid monoalkylester, a fatty acid amide or a fatty acid monoalkylamide of a saturated or unsaturated fatty acid, all of the compounds mentioned under 2. having 8 to 30 carbon atoms 3. a mono- or polyester of a saturated or unsaturated, mono- or multivalent carboxylic acid with 2 to 30 carbon atoms and polyols, with the exception of polyethylene glycols 4. a polyamide of saturated or unsaturated fatty acids with 8 to 30 carbon atoms and aliphatic polyamides with two to six nitrogen atoms 5. an acyclic, preferably monocyclic and/or bicyclic terpene, in particular a terpene hydrocarbon and/or a terpene alcohol and/or 6. a polyoxyalkylene compound based on alkylene oxides.

Description

Die Erfindung betrifft die Verwendung von Mitteln zur Behandlung von Maschinen zur Zellstoff-, Papier- und Kartonherstellung zur Reinigung dieser Aggregate von anhaftenden Verunreinigungen aus natürlichen Harzen und/oder synthetischen Polymerisaten sowie die Verhinderung der Verschmutzung dieser Aggregate durch solche Verunreinigungen.The invention relates to the use of agents for treating machines for pulp, Paper and cardboard manufacture for cleaning these aggregates from adhering impurities from natural resins and / or synthetic polymers as well as prevention the contamination of these units by such impurities.

Bei der Zellstoff- und Papierherstellung ist es erforderlich, die Agglomeration und Abscheidung von Harzanteilen des Holzes, Klebstoffanteilen aus dem Altpapier und Kunststoffanteilen aus Latex beschichtetem Altpapier, bei dessen Wiederverwendung durch geeignete Maßnahmen zu verhindern, um Störungen im Herstellungsprozeß und die Beeinträchtigung der Zellstoff- oder Papierqualität zu vermeiden.In pulp and paper manufacture, it is necessary to agglomerate and separate of resin parts of the wood, adhesive parts from the waste paper and plastic parts made of latex coated waste paper, when reused by suitable measures to prevent disruptions in the manufacturing process and the impairment of the Avoid pulp or paper quality.

Nach EP 517 360 A1 werden inhibierend wirkende Mischungen aus Tensiden und Lösungsmitteln, vorzugsweise Fettsäurealkanolamide, ethoxylierte Verbindungen, aliphatische Kohlenwasserstoffe und Orangenterpene der Stoffsuspension in einer Menge von 1 - 200 ppm zugesetzt. Die in dieser Weise verwendeten Mittel sind jedoch nur unzureichend wirksam, so daß der Herstellungsprozeß oft unterbrochen werden muß, um eine Reinigung der Maschinenteile, insbesondere der Sieb- und Pressenpartie vorzunehmen, wobei nach EP 178 340 B1 ausschließlich Limonen als Lösemittel Verwendung findet.According to EP 517 360 A1, inhibiting mixtures of surfactants and solvents, preferably fatty acid alkanolamides, ethoxylated compounds, aliphatic Hydrocarbons and orange terpenes of the stock in an amount of 1 - 200 ppm added. However, the funds used in this way are insufficiently effective, so that the manufacturing process often has to be interrupted in order to clean the machine parts, in particular to make the wire and press section, whereby according to EP 178 340 B1 exclusively Limonene is used as a solvent.

Nach EP 235 015 A1 und EP 599 440 A1 kann die Ablagerung von Harzen durch kationische Polymerisate auf der Basis von Epichlorhydrin und Aminen bzw. bei gleichzeitiger Verwendung von nichtionogenen Tensiden verhindert werden.According to EP 235 015 A1 and EP 599 440 A1, the deposition of resins by cationic Polymers based on epichlorohydrin and amines or when used simultaneously can be prevented by non-ionic surfactants.

In US 4,190,491 und US 3,582,461 werden Copolymere und Dicyandiamid-Formaldehydkondensate beschrieben, deren Wirksamkeit ebenfalls auf der Wechselwirkung mit anionischen Harzkomponenten der Zellstoffsuspension beruht. Hierbei werden die ionogenen Komponenten neutralisiert, dispergiert oder bereits bestehende Ablagerungen redispergiert, ohne daß die Wirksamkeit kationischer Retentionsmittel eingeschränkt wird, wie dies zuvor bei der Verwendung anionischer Dispergiermittel eintrat. US 4,190,491 and US 3,582,461 describe copolymers and dicyandiamide-formaldehyde condensates described, their effectiveness also on the interaction based on anionic resin components of the pulp suspension. Here the ionogenic Neutralizes or disperses components or redisperses existing deposits, without limiting the effectiveness of cationic retention agents like this previously occurred when using anionic dispersants.

Die Anwendbarkeit dispergierender Mittel ist jedoch in geschlossenen Wasserkreisläufen nur begrenzt möglich, da die dispergierten Harzanteile nicht vollständig an die anionischen Zellstoffasern gebunden und ausgetragen werden, so daß sie in zunehmendem Maße im Prozeßwasser verbleiben.However, the applicability of dispersing agents is only in closed water cycles limited possible, since the dispersed resin parts do not fully adhere to the anionic cellulose fibers are bound and discharged so that they are increasingly in the process water remain.

Da es nicht ausreichend gelingt, die Ablagerung von klebrigen Materialien an Papiermaschinen zu verhindern, wird daher in EP 359 590 B1 vorgeschlagen, auf die Oberfläche der Vorrichtungen eine wässrige Lösung von kationischen Polymeren zusammen mit einem wasserlöslichen, nichtionogenen oder kationischen Tensid aufzubringen.Because it is not possible to deposit sticky materials on paper machines To prevent it is therefore proposed in EP 359 590 B1 on the surface of the devices an aqueous solution of cationic polymers together with a water-soluble, apply non-ionic or cationic surfactant.

Eine ähnliche Anwendung unter gezielter Behandlung von Sieben und Filzen von Papiermaschinen erfolgt nachdem Daraspray-Konzept, daß von T. Hättich, T. Hassler und G. Corbel im Wochenblatt für Papierfabrikation 122, 1994, S. 644 - 648 beschrieben wird.A similar application with targeted treatment of screens and felts of paper machines takes place according to the Daraspray concept that is described by T. Hättich, T. Hassler and G. Corbel in the Wochenblatt für Papierfabrikation 122 , 1994, pp. 644-648.

Die Nachteile dieser Verfahrensweise sind dadurch gekennzeichnet, daß die sich bildende Überzugschicht von den Gleichgewichtskonzentrationen der wasserlöslichen Komponenten im System abhängig ist und die braun gefärbte, elastische Struktur des Schutzfilms bei mangelnder Feuchtigkeit hart und brüchig wird. Ein weiterer Nachteil ergibt sich aus der teilweise erforderlichen sehr spezifischen Dosierung mehrer Komponenten, um den Überzug zu erzeugen.The disadvantages of this procedure are characterized by the fact that the Coating layer from the equilibrium concentrations of the water-soluble components is dependent on the system and the brown colored, elastic structure of the protective film is lacking Moisture becomes hard and brittle. Another disadvantage arises from the partial required very specific dosing of several components to produce the coating.

Nach EP 550 230 A1 wird weiterhin die Reinigung der Filze der Pressenpartie unter Verwendung von Fettsäureimidazolinen vorgeschlagen und nach EP 647 737 A1 werden diese Verbindungen zusammen mit ethoxylierten Nonylphenolen und speziellen Sulfonaten zur Verhinderung von Ablagerungen von Polyamidoamin-Epichlorhydrinharzen in Filzen verwendet.According to EP 550 230 A1, the cleaning of the felts of the press section is also used proposed by fatty acid imidazolines and according to EP 647 737 A1 these compounds together with ethoxylated nonylphenols and special sulfonates for prevention of deposits of polyamidoamine-epichlorohydrin resins used in felts.

Die EP 0 648 820 A2 beschreibt Zusammensetzungen, die zur Entfernung von Tonern von Papieroberflächen, Klebstoffresten von Kunststoffen, zum Ablösen von Kunststoffbeschichtungen und zur Reinigung von Metallflächen von Schneidölresten oder Farbstiftmarkierungen eingesetzt, sowie zur Entfernung von durch Klebstoffe befestigten PVC-Teilen verwendet werden. Hierbei werden konzentrierte Öl-in-Wasser-Emulsionen mit einem Anteil an nichtwässriger Phase von 8-90 Gew.% eingesetzt, die verschiedenste organische Verbindungen, wie auch Dicarbonsäurediester, enthalten, und die unter teilweiser Anwendung von Ultraschall und weiterer Hilfsmittel (unwoven fabric strips) im Temperaturbereich von 5 - 70 °C, also teilweise unter zusätzlichem Erwärmen des Reinigungsmittels während des Reinigungsvorganges eingesetzt werden. Weiterhin enthalten die Emulsionen Lösungsmittel wie Isopropanol, Toluol, Benzylalkohol, Methylethylketon, N-Methylpyrrolidon, Di- und Triethylenglycoldimethylether sowie 3- Methyl-3-methoxybutanol, welche die Anwendung dieser Emulsionen in abgeschlossenen Systemen aus Gründen der Arbeitssicherheit und wegen Gesundheitsgefährdung einschränken.EP 0 648 820 A2 describes compositions which are used to remove toners from Paper surfaces, adhesive residues of plastics, for removing plastic coatings and for cleaning metal surfaces from cutting oil residues or colored pencil markings used, as well as used to remove PVC parts attached by adhesives become. Concentrated oil-in-water emulsions with a non-aqueous content Phase of 8-90% by weight used, the most diverse organic compounds, as well as dicarboxylic acid diesters, and that with the partial use of ultrasound and other auxiliary materials (unwoven fabric strips) in the temperature range of 5 - 70 ° C, partially with additional heating of the cleaning agent during the cleaning process be used. The emulsions also contain solvents such as isopropanol, Toluene, benzyl alcohol, methyl ethyl ketone, N-methyl pyrrolidone, di- and triethylene glycol dimethyl ether and 3-methyl-3-methoxybutanol, which are the use of these emulsions in closed systems for reasons of occupational safety and health risks restrict.

Die inhibierende Wirkung dieser bekannten Mittel ist jedoch insbesondere bei der Papierherstellung unter Verwendung von Altpapier unzureichend, da klebende Bestandteile des Recyclingrohstoffs, insbesondere bei Temperaturen oberhalb 50 °C, weiterhin als feindisperses System in der Zellstoffsuspension zunächst gelöst und dann als Agglomerate (Stickies) auf der Oberfläche der Maschinen; insbesondere von Sieben, Filzen, Zylindern und Leitwalzen abgelagert werden. Hierdurch werden die Papierqualität durch Flecken- und Lochbildung beeinträchtigt, der Produktionsprozeß wird durch Abriß der Zellstoff- oder Papierbahnen gestört und die Entwässerung der Stoffsuspension und die Blattbildung durch Verminderung der Wasserdurchlässigkeit und Wasseraufnahme der Siebe bzw. Filze sowie der Trockenvorgang durch verringerte Wärmeübertragung beeinträchtigt.The inhibitory effect of these known agents is, however, particularly in papermaking inadequate when using waste paper, since adhesive components of the recycled raw material, especially at temperatures above 50 ° C, still as finely dispersed System first dissolved in the pulp suspension and then as agglomerates (stickies) the surface of the machines; especially of screens, felts, cylinders and guide rolls be deposited. This affects paper quality due to stains and holes, the production process is disrupted by tearing off the pulp or paper webs and dewatering the stock suspension and leaf formation by reducing the Water permeability and water absorption of the sieves or felts as well as the drying process impaired by reduced heat transfer.

Da die beschriebenen Hilfsmittel in ihrer Wirkung unzureichend sind; ist es zur Zeit weiter erforderlich, Zellstoff- und Papiermaschinen im stehendem Zustand oder bei stark gedrosseltem Lauf mit Chemikalien zu reinigen, die beispielsweise aufgesprüht und nach einer bestimmten Zeit zusammen mit den Schmutzpartikeln mit Wasser abgespült werden. Weiterhin ist die Siebreinigung in kontinuierlich laufenden, separaten Trockensiebreinigungsanlagen bekannt, in denen jedoch ebenfalls der Reinigungsvorgang nicht immer zufriedenstellend verläuft. Andere Verfahren vermeiden die genannten Nachteile unter Verwendung speziell mit Teflon oder anderen Kunststoffen beschichteter Siebmaterialien., die jedoch mechanisch anfällig und in der Beschaffung kostenaufwendig sind. Since the described tools are insufficient in their effect; it is currently further required, pulp and paper machines in the standing state or in the case of severely throttled Clean the barrel with chemicals, for example sprayed on and after a certain Time together with the dirt particles are rinsed with water. Farther is the sieve cleaning in continuously running, separate dryer sieve cleaning systems known, but also in which the cleaning process is not always satisfactory runs. Other methods avoid using the disadvantages mentioned especially with Teflon or other plastics coated sieve materials. Which, however, are mechanically susceptible and are expensive to procure.

Weiterhin ist die Verwendung von bestimmten Öl-in-Wasser-Emulsionen als Mikrobizid-Ersatz bei der Papierherstellung nach DE 43 40 665.3 bekannt.Furthermore, the use of certain oil-in-water emulsions as a microbicide replacement known in paper manufacture according to DE 43 40 665.3.

Es bestand daher die Aufgabe, die zuvor detailiert beschriebenen Nachteile zu beseitigen und insbesondere hierzu Mittel zu finden, deren Verwendung bei der Zellstoff-, Papier- und Kartonherstellung mit Altpapier zur Behandlung von Zellstoff-, Papier- und Kartonmaschinen geeignet ist., die Maschinen von anhaftenden Agglomeraten aus synthetischen Polymerisaten und natürlichen Harzen zu reinigen und/oder das Anhaften solcher Substanzen von der Oberfläche der Maschinen zu verhindern.The object was therefore to eliminate the disadvantages described in detail above and in particular to find means for this, their use in the manufacture of pulp, paper and cardboard with waste paper for the treatment of pulp, paper and board machines is suitable., the machines of adhering agglomerates made of synthetic polymers and to clean natural resins and / or the adherence of such substances from the surface to prevent the machines.

Die Aufgabe konnte durch die Verwendung von Öl-in-Wasser Emulsionen zur Behandlung, insbesondere zur Reinigung von Zellstoff-, Papier-, Pappe- oder Kartonmaschinen beziehungsweise deren Anlagenteile von anhaftenden synthetischen Polymerisaten und natürlichen Harzen oder zur Verhinderung des Anhaftens solcher Substanzen an den Oberflächen solcher Maschinen oder Anlagenteilen gelöst werden.The task could be accomplished by using oil-in-water emulsions for treatment, especially for cleaning pulp, paper, cardboard or cardboard machines respectively their parts of the plant from adhering synthetic polymers and natural Resins or to prevent such substances from adhering to the surfaces of such Machines or system parts can be solved.

Die genannten Emulsionen sind dadurch gekennzeichnet, daß sie als Bestandteil der Ölphase wenigstens einen der folgenden Stoffe allein oder im Gemisch mit den anderen genannten Stoffen enthalten:

  • 1. einen gesättigten oder ungesättigten, offenkettigen oder zyklischen, normalen oder isomeren Kohlenwasserstoff mit 8 - 30 Kohlenstoffatomen
  • 2. einen gesättigten oder ungesättigten Fettalkohol, eine gesättigte oder ungesättigte Fettsäure, einen Fettsäuremonoalkylester, ein Fettsäureamid oder ein Fettsäuremonoalkylamid einer gesättigten oder ungesättigten Fettsäure, sämtliche unter 2 aufgeführten Verbindungen mit 8 bis 30 Kohlenstoffatomen
  • 3. einen Mono- oder Polyester einer gesättigten oder ungesättigten ein- oder mehrwertigen Carbonsäure mit 2 bis 30 Kohlenstoffatomen und Polyolen, ausgenommen Polyethylenglykole
  • 4. ein Polyamid von gesättigten oder ungesättigten Fettsäuren mit 8 bis 30 Kohlenstoffatomen und aliphatischen Polyaminen mit zwei bis sechs Stickstoffatomen
  • 5. ein acyclisches, vorzugsweise monocyclisches und/oder bicyclisches Terpen, insbesondere einen Terpenkohlenwasserstoff und/oder einen Terpenalkohol und/oder
  • 6. eine Polyoxyalkylenverbindung auf der Basis von Alkylenoxiden.
    • The emulsions mentioned are characterized in that they contain, as part of the oil phase, at least one of the following substances, alone or in a mixture with the other substances mentioned:
  • 1. a saturated or unsaturated, open-chain or cyclic, normal or isomeric hydrocarbon with 8-30 carbon atoms
  • 2. a saturated or unsaturated fatty alcohol, a saturated or unsaturated fatty acid, a fatty acid monoalkyl ester, a fatty acid amide or a fatty acid monoalkylamide of a saturated or unsaturated fatty acid, all of the compounds listed under 2 with 8 to 30 carbon atoms
  • 3. a mono- or polyester of a saturated or unsaturated mono- or polyvalent carboxylic acid with 2 to 30 carbon atoms and polyols, with the exception of polyethylene glycols
  • 4. a polyamide of saturated or unsaturated fatty acids with 8 to 30 carbon atoms and aliphatic polyamines with two to six nitrogen atoms
  • 5. an acyclic, preferably monocyclic and / or bicyclic terpene, in particular a terpene hydrocarbon and / or a terpene alcohol and / or
  • 6. a polyoxyalkylene compound based on alkylene oxides.

    • Die beschriebenen Öl-in-Wasser-Emulsionen sind aus verschiedenen Bereichen bekannt. Es war jedoch überraschend festzustellen, daß diese Emulsionen die Eigenschaft haben 1. Maschinen und Anlagenteile von speziellen Verunreinigungen zu reinigen und 2. das Anhaften solcher spezieller Verunreinigungen an den Oberflächen von Maschinenaggregaten oder Anlagenteilen zu verhindern.The oil-in-water emulsions described are known from various fields. It However, it was surprising to find that these emulsions have the property of 1. machines and system components to be cleaned of special contaminants and 2. adhering such special contamination on the surfaces of machine units or system parts to prevent.

    Die Herstellung der erfindungsgemäß zu verwendenden Emulsionen, insbesondere stabiler Öl-in-Wasser-Emulsionen ist bekannt. Hierzu wird die Ölkomponente in Wasser mittels geeigneter bekannter Öl-in-Wasser-Emulgatoren emulgiert. Die hydrophobe Phase stellt überwiegend den Wirkstoff dar.The preparation of the emulsions to be used according to the invention, in particular more stably Oil-in-water emulsions are known. For this, the oil component in water by means of suitable known oil-in-water emulsifiers. The hydrophobic phase is predominant the active ingredient.

    Beispielhaft sind als hydrophobe Ölkomponente zu nennen:

    • gesättigte Kohlenwasserstoffe wie Octan, Tetradecan, Octadecan, Eisodecan, Decen, Hexadecen und technische alpha-Olefine
    • Fettalkohole wie Octanol, Dodecanol, Tridecanol, Octadecanol, Behenylalkohol
    • Fettsäuren wie Caprinsäure, Stearinsäure, Melissinsäure, Ölsäure und Linolensäure
    • Fettsäureester wie Stearylsäuremethylester, Palmitinsäureoctadecylester, Ölsäureoctylester, Glycerinmono- und -trioleat, Ethylenglykoldilaurat, Sorbitanstearate und -oleate sowie Ester, insbesondere Diester von aliphatischen und/oder aromatischen Di- und/ oder Tricarbonsäuren, wie C1 - C13 Alkyl- und Isoalkylester von C2 - C12 Dicarbonsäuren, wie Oxalsäure, Malonsäure, Bernsteinsäure, Glutarsäure, Adipinsäure, Pimelinsäure, Suberinsäure, Sebacinsäure, Äpfelsäure, Weinsäure, Zitronensäure, Phthalsäure, Dodekansäure, C9-Dicarbonsäure (Trimethyladipinsäure) sowie Maleinsäure und Fumarsäure. Weitere Beispiele solcher Ester sind:
    Examples include the hydrophobic oil component:
    • saturated hydrocarbons such as octane, tetradecane, octadecane, icodecane, decene, hexadecene and technical alpha-olefins
    • Fatty alcohols such as octanol, dodecanol, tridecanol, octadecanol, behenyl alcohol
    • Fatty acids such as capric acid, stearic acid, melissic acid, oleic acid and linolenic acid
    • Fatty acid esters such as methyl stearate, octadecyl palmitate, octyl oleic acid, glycerol mono- and trioleate, ethylene glycol dilaurate, sorbitan stearates and oleates, and esters, especially diesters of aliphatic and / or aromatic di- and / or tricarboxylic acids, such as C 1 -C 13 alkyl esters 2 - C 12 dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid, malic acid, tartaric acid, citric acid, phthalic acid, dodecanoic acid, C 9 -dicarboxylic acid (trimethyladipic acid) as well as maleic acid and fumaric acid. Other examples of such esters are:

    Di-n-butyloxalat, Di-n-butylmalonat, Di-n-butylsuccinat, Di-n-butylglutarat, Di-n-butyladipat, Di-n-butylsuberat, Di-n-butylsebacat, Dimethyladipat, Diethyladipat, Di-n-propyladipat, Diisopropyladipat, Diisobutyladipat, Di-tert-butyladipat, Di-isoamyladipat, Di-n-hexyladipat, Di-(2-ethylbutyl)adipat, Di-(2-ethylhexyl)adipat, Diisodecyladipat, Dimethylphthalat, Diethylphthalat, Di-n-butylphthalat, Diisobutylphthalat, Di-(2-ethylhexyl)phthalat und Diisodecylphthalat;

    • Fettsäureamide wie Stearylamid, Kokosfettsäurebutylamid, Essigsäureoleylamid und Ethylenbisstearylamid.
    Di-n-butyl oxalate, di-n-butylmalonate, di-n-butyl succinate, di-n-butyl glutarate, di-n-butyl adipate, di-n-butyl suberate, di-n-butyl sebacate, dimethyl adipate, diethyl adipate, di-n- propyl adipate, diisopropyl adipate, diisobutyl adipate, di-tert-butyl adipate, di-isoamyl adipate, di-n-hexyl adipate, di- (2-ethylbutyl) adipate, di- (2-ethylhexyl) adipate, diisodecyl adipate, dimethyl phthalate, diethyl phthalate butyl phthalate, diisobutyl phthalate, di (2-ethylhexyl) phthalate and diisodecyl phthalate;
    • Fatty acid amides such as stearylamide, coconut fatty acid butylamide, acetic acid oleylamide and ethylene bisstearylamide.

    Weitere geeignete handelsübliche Kohlenwasserstoffe oder Kohlenwasserstoffgemische sind Paraffinöl, Mineralöl oder Poly-alpha-Olefine.Other suitable commercially available hydrocarbons or hydrocarbon mixtures are Paraffin oil, mineral oil or poly-alpha-olefins.

    Die erfindungsgemäß zu verwendenden Mittel sind überraschenderweise als Reinigungsmittel oder als Mittel mit imprägnierender Wirkung gegen Verunreinigungen wie Klebstoffe, Harze, Wachse, Fette und/oder Bitumen abweisende Wirkung an beliebiger Stelle der Zellstoff-, Papier- und Kartonmaschinen geeignet.The agents to be used according to the invention are surprisingly used as cleaning agents or as an agent with an impregnating effect against impurities such as adhesives, resins, Wax, fat and / or bitumen repellent effect at any point on the pulp, paper and board machines.

    Die erfindungsgemäße Verwendung der Mittel erfolgt an der Oberfläche der Aggregate, insbesondere unter Behandlung der Siebe, Filze im Naßbereich der Maschinen sowie der Trokkensiebe, Leitwalzen und Trockenzylinder im Trockenbereich.The agents according to the invention are used on the surface of the aggregates, in particular treating the sieves, felts in the wet area of the machines and the drying sieves, Guide rollers and drying cylinders in the drying area.

    Bevorzugt erfolgt der erfindungsgemäße Einsatz der Mittel auf der stoffberührenden Oberfläche der Aggregate vor deren Berührung mit der Stoffbahn und ggf. getrennt für den Deck- und Rückseitenbereich der Produkte.The agents according to the invention are preferably used on the material-contacting surface of the units before they come into contact with the fabric and, if necessary, separately for the deck and Back area of the products.

    Die Öl-in-Wasser-Emulsionen werden erfindungsgemäß als solche oder nach Verdünnung mit Wasser und/oder Lösemitteln, vorzugsweise wassermischbaren Lösemitteln verwendet. In der Regel wird hierzu Wasser verwendet, das Temperaturen im Bereich von 5 - 80 °C, vorzugsweise 20 - 50 °C hat. According to the invention, the oil-in-water emulsions are used as such or after dilution Water and / or solvents, preferably water-miscible solvents. In the As a rule, water is used for this purpose, the temperatures in the range from 5 to 80 ° C., preferably 20 - 50 ° C.

    Die Konzentration der Öl-in-Wasser-Emulsion in wässriger Verdünnung beträgt dabei 1 - 40 Gew.%, vorzugsweise 5 - 25 Gew.% und besonders bevorzugt 10- 25 Gew.%, bezogen auf die wässrige Verdünnung. Die verdünnte Emulsion wird in einer Menge von 20 - 500 l, vorzugsweise 100 - 400 l pro Stunde und Meter Arbeitsbreite der Maschine in kontinuierlicher oder intervallmäßiger Dosierung aufgebracht, wobei die verdünnte Emulsion in beliebiger Weise, bevorzugt über ein mit Flachstrahldüsen versehenes Sprührohr mit überlappendem Sprühbereich aufgegeben wird. Ebenso kann bei Trockensiebreinigungsanlagen die Zugabe der Emulsion zum Waschwasser erfolgen.The concentration of the oil-in-water emulsion in aqueous dilution is 1-40% by weight, preferably 5-25% by weight and particularly preferably 10-25% by weight on the aqueous dilution. The diluted emulsion is in an amount of 20 - 500 l, preferably 100 - 400 l per hour and meter working width of the machine in continuous or interval dosing applied, the diluted emulsion in any Way, preferably via a spray tube provided with flat jet nozzles with an overlapping one Spray area is abandoned. The addition can also be added to dryer fabric cleaning systems the emulsion to the wash water.

    Die erfindungsgemäß bevorzugt verwendeten Öl-in-Wasser-Emulsionen enthalten biologisch abbaubare Komponenten und sind daher umweltverträglich.The oil-in-water emulsions preferably used according to the invention contain biologically degradable components and are therefore environmentally friendly.

    Bei der Anwendung, insbesondere bei stark verschmutzten Trockensieben wird die verdünnte Emulsion im Rücklauf des Trockensiebes aufgebracht und ggf. das Sieb vor dem Auftreffen auf die Papierbahn mit Luft aufgeblasen.When using, especially with heavily soiled dryer fabrics, the diluted one Emulsion applied in the return of the dryer fabric and, if necessary, the screen before hitting it inflated with air on the paper web.

    Durch die Wirkung der erfindungsgemäß zu verwendenden Mittel verlieren klebrige Verunreinigungen ihre Adhäsionswirkung und lösen sich selbständig oder beim Abspritzen mit Wasser von der Oberfläche der Aggregate und werden entfernt.Due to the action of the agents to be used according to the invention, sticky contaminants lose their adhesive effect and dissolve independently or when spraying Water from the surface of the aggregates and are removed.

    Die reinigende Wirkung der Mittel hält bei erfindungsgemäßer Verwendung der Mittel in der Sieb- und Trockenpartie der Maschinen fortlaufend bis zum letzten Maschinenteil an.The cleaning effect of the agents keeps when using the agents according to the invention in the Sieve and dryer section of the machines continuously up to the last machine part.

    Die imprägnierend inhibierende Wirkung gegenüber erneuten Verunreinigungen auf den Aggregatoberflächen ist produktbezogen und sortenabhängig und hält nach Beendigung der Dosierung über einen Zeitraum von 4 - 75 Std. an.The impregnating inhibitory effect against renewed contamination on the aggregate surfaces is product and variety dependent and lasts after the end of the dosage over a period of 4 - 75 hours.

    Sofern bei der erfindungsgemäßen Verwendung der Mittel zur Papierherstellung eine Beeinträchtigung der Oberflächenleimung auftritt, kann die Reinigung und Imprägnierung der Aggregate bei jedem Sortenwechsel erfolgen. If there is an impairment in the use of the paper-making agents according to the invention If the surface sizing occurs, the aggregates can be cleaned and impregnated with every change of grade.

    Die Erfindung wird durch die nachfolgenden Beispiele erläutert:The invention is illustrated by the following examples:

    Herstellung einer Paraffin Emulsion APreparation of a paraffin emulsion A

    14 kg Paraffin (Schmelzpunkt 48 - 50 °C), 1,0 kg Hexadecanol, 7 kg eines 75%igen Paraffinsulfonats und 2,1 kg Wasser werden homogen aufgeschmolzen und anschließend unter Rühren in eine 60 °C warme Lösung aus 74,5 kg Wasser und 1,4 kg eines mit 20 Mol Ethylenoxid umgesetzten Oleylalkohols eingegossen. Es entsteht eine Öl-in-Wasser-Emulsion mit ca. 20,5 % Festkörper.14 kg paraffin (melting point 48-50 ° C), 1.0 kg hexadecanol, 7 kg 75% paraffin sulfonate and 2.1 kg of water are melted homogeneously and then with stirring in a 60 ° C warm solution from 74.5 kg water and 1.4 kg one with 20 moles of ethylene oxide poured converted oleyl alcohol. An oil-in-water emulsion with approx. 20.5 is formed % Solids.

    Herstellung einer Terpen-Emulsion BPreparation of a terpene emulsion B

    Es wurde wie bei der Herstellung der Emulsion A verfahren mit dem Unterschied, daß 14 kg Terpen anstelle Paraffin eingesetzt wurden.

    Figure 00090001
    The procedure was as in the preparation of emulsion A, with the difference that 14 kg of terpene were used instead of paraffin.
    Figure 00090001

    Beispiel 1example 1

    Bei laufender Papierproduktion wird auf die papierberührende Seite des Trockensiebes vor der Berührung des Siebes mit der Papierbahn eine 20 Gew.%ige wässrige Verdünnung der Emulsion M in einer Menge von 250 l pro Stunde und pro Meter Arbeitsbreite des endlosen Siebes durch Flachstrahldüsen eines Sprührohres, die im Abstand von 25 cm, unter Überlappung der Sprühfelder angeordnet sind unter intervallmäßiger Dosierung in einer Zeit von ca. 10 Minuten aufgebracht.When paper production is running, the side of the dryer fabric that comes into contact with the paper is placed in front a 20% by weight aqueous dilution of the touch of the screen with the paper web Emulsion M in an amount of 250 l per hour and per meter working width of the endless Sieves through flat spray nozzles of a spray tube, which are at a distance of 25 cm, with overlap the spray fields are arranged with intermittent dosing in a time of approx. Applied for 10 minutes.

    Die Verunreinigungen werden vom Sieb und den nachfolgenden Leitwalzen und Zylindern gelöst und zum Teil unter Herausschleudern der Agglomerate, speziell in der Anfangsphase der Behandlung entfernt. Die reinigende Wirkung ist auch an den folgenden Maschinenteilen feststellbar und hält bis zum Glättzylinder an. Nach Beendigung der Dosierung der verdünnten Emulsion ist eine inhibierende Wirkung gegen anhaftende Verunreinigungen festzustellen, die ca. 24 Std. andauert.The contaminants are removed from the screen and the subsequent guide rollers and cylinders solved and partly with the agglomerates being thrown out, especially in the initial phase the treatment removed. The cleaning effect is also on the following machine parts lockable and lasts up to the smoothing cylinder. After the dosage of the diluted Emulsion has an inhibiting effect against adhering contaminants, which lasts about 24 hours.

    Beispiel 2Example 2

    Auf ein verschmutztes Kunststoffsieb einer Papiermaschine, bestehend aus Polyamid- und Polyesterfasern wird die Emulsion B aufgebracht. Die Figur 1 zeigt vier Proben des Siebes, wobei ausgehend von der stark verschmutzten ersten Probe (0-Probe). Bei der Probe 2 nach 6 Std. bei Raumtemperatur, bei der Probe 3 nach 30 min bei 60 ° und bei der Probe 4 nach 60 min bei 60 ° die Reinigungseffekte sehr deutlich erkennbar sind. Die Luftdurchlässigkeit des Siebes wurde gemessen. Sie steigt ausgehend von 320 cfm auf 530 cfm bei Probe 4 an.On a dirty plastic screen of a paper machine, consisting of polyamide and Emulsion B is applied to polyester fibers. FIG. 1 shows four samples of the sieve, starting from the heavily soiled first sample (0 sample). In sample 2 after 6 Hours at room temperature, with sample 3 after 30 min at 60 ° and with sample 4 after 60 min at 60 ° the cleaning effects are very clearly recognizable. The air permeability of the Siebes was measured. It increases from 320 cfm to 530 cfm in sample 4.

    Beispiel 3Example 3

    Analog zum Vorgehen bei Beispiel 1 wurde die Emulsion M in einer wässrigen Verdünnung von 1 : 6 Gewichtsteilen in einer täglichen Menge von 30 l in 6 gleichmäßigen Zeitintervallen auf das Trockensieb während des Produktionsvorganges aufgebracht. Das verunreinigte Sieb wurde gereinigt. Analogous to the procedure in Example 1, the emulsion M was in an aqueous dilution of 1: 6 parts by weight in a daily amount of 30 l in 6 even time intervals applied to the dryer fabric during the production process. The contaminated sieve has been cleaned.

    Beispiel 4Example 4

    Auf den durch Klebstoffe und Harze verunreinigten Filz einer Papiermaschine, bestehend aus Polyamid und Polyesterfasern, wird mit einem Spritzrohr die Emulsion M nach Verdünnung mit Wasser auf 15 Gew.% aufgebracht. Die an der Oberfläche und im Filz anhaftenden Verunreinigungen lösen sich ab, so daß die Wasseraufnahme des Filzes mit verbesserter Wirkung erfolgt und die Oberfläche der Papierbahnen gleichmäßig und ohne Fehlmarkierungen ausgebildet wird.On the felt of a paper machine, contaminated by adhesives and resins, consisting of Polyamide and polyester fibers, the emulsion M is diluted with a spray tube applied to 15% by weight with water. The impurities adhering to the surface and in the felt detach, so that the water absorption of the felt with an improved effect takes place and the surface of the paper webs are formed evenly and without false marks becomes.

    Claims (6)

    1. Use of oil-in-water emulsions for treating machines or unit components for the production of cellulose, paper, cardboard, or carton, characterized in that the oil-in-water emulsions are used for cleaning from adhering contaminants from synthetic polymer products and/or natural resins, and/or preventing contamination by adhering synthetic polymer products and natural resins, and which oil-in-water emulsions contain as oil phase component at least one of the following substances alone or in admixture with the other specified substances:
      1. a saturated or unsaturated open-chain or cyclic, normal or isomeric hydrocarbon having 8-30 carbon atoms;
      2. a saturated or unsaturated fatty alcohol, a saturated or unsaturated fatty acid, a fatty acid monoalkyl ester, a fatty acid amide, or a fatty acid monoalkylamide of a saturated or unsaturated fatty acid, with all compounds mentioned under 2. having from 8 to 30 carbon atoms;
      3. a mono- or polyester of a saturated or unsaturated monobasic or polybasic carboxylic acid having from 2 to 30 carbon atoms with polyols, with the exception of polyethylene glycols, or diesters of aliphatic and/or aromatic di- and/or tricarboxylic acids;
      4. a polyamide of saturated or unsaturated fatty acids having from 8 to 30 carbon atoms and aliphatic polyamines having from two to six nitrogen atoms;
      5. an acyclic, preferably monocyclic and/or bicyclic terpene, particularly a terpene hydrocarbon and/or a terpene alcohol; and/or
      6. a polyoxyalkylene compound based on alkylene oxides.
    2. The use of oil-in-water emulsions according to claim 1, characterized in that the adhering synthetic polymer products are adhesives and/or components of latex coatings, and/or the natural resins are components or modified components of processed wood.
    3. The use of oil-in-water emulsions according to claims 1 and 2, characterized in that parts of the cellulose and paper machines, particularly those units used for draining the material suspension, preferably the wire end and the press section, are treated.
    4. The use of oil-in-water emulsions according to claims 1 to 3, characterized in that the oil-in-water emulsions are used in an undiluted state or subsequent to dilution with water and/or organic solvents, and applied in amounts of from 20-500 l, preferably 100-400 l per hour and per meter of operating width of the machine in continuous or interval metering.
    5. The use of oil-in-water emulsions according to claim 4, characterized in that the oil-in-water emulsions are used in an aqueous dilution at an oil-in-water emulsion concentration of from 1-40 wt.-%, preferably 5-25 wt.-%, and more preferably 10-25 wt.-%, relative to the aqueous dilution.
    6. The use of oil-in-water emulsions according to claims 1 to 5 in the production of paper, cardboard and carton using waste paper.
    EP96916148A 1995-05-31 1996-05-22 Use of agents for cellulose and paper production Expired - Lifetime EP0828889B9 (en)

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