EP0112525B1 - Agent et procédé pour l'encollage neutre - Google Patents

Agent et procédé pour l'encollage neutre Download PDF

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Publication number
EP0112525B1
EP0112525B1 EP83112302A EP83112302A EP0112525B1 EP 0112525 B1 EP0112525 B1 EP 0112525B1 EP 83112302 A EP83112302 A EP 83112302A EP 83112302 A EP83112302 A EP 83112302A EP 0112525 B1 EP0112525 B1 EP 0112525B1
Authority
EP
European Patent Office
Prior art keywords
agent
sizing
weight
process according
activation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83112302A
Other languages
German (de)
English (en)
Other versions
EP0112525A1 (fr
Inventor
Erwin Dr. Dipl.-Chem. Hechler
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.)
BK Giulini Chemie GmbH
Original Assignee
Giulini Chemie GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19823245390 external-priority patent/DE3245390C1/de
Priority claimed from DE19833338088 external-priority patent/DE3338088C1/de
Priority claimed from DE19833338087 external-priority patent/DE3338087C1/de
Application filed by Giulini Chemie GmbH filed Critical Giulini Chemie GmbH
Priority to AT83112302T priority Critical patent/ATE26005T1/de
Publication of EP0112525A1 publication Critical patent/EP0112525A1/fr
Application granted granted Critical
Publication of EP0112525B1 publication Critical patent/EP0112525B1/fr
Expired 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
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
    • 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
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/14—Carboxylic acids; Derivatives thereof
    • 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
    • D21H17/62—Rosin; Derivatives thereof
    • 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
    • D21H17/64—Alkaline compounds
    • 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
    • D21H17/66—Salts, e.g. alums
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper

Definitions

  • the present invention relates to a mass sizing agent for paper, cardboard, cardboard and other cellulose-containing materials in the neutral range, as well as a one-step process for mass sizing with this agent.
  • the partial or complete replacement of the aluminum sulfate with sodium aluminate leads to the desired increase in the pH value, without a deterioration in the size being observed.
  • Aluminum sulfate is therefore no longer required to flocculate resin glue and fix it to the cellulose fibers; it can be substituted by adding sodium aluminate and then changing the pH.
  • DE-A-2 924 947 describes a surface sizing agent for paper, cardboard and cardboard in which the sizing component is dispersed in water.
  • the dispersion also contains sodium aluminate.
  • Such dispersions are unsuitable for mass sizing, since the sizing components tend to flocculate and lead to poor results in mass sizing.
  • the solution to the problem is based on the knowledge that the known sizing process can thereby be improved, in particular carried out more cost-effectively, if the sizing is carried out with an agent which is both the aluminate and. also contains the resin glue in dissolved form, in such a way that the precipitation of the sizing component or the sizing resin as aluminum resinate in the sizing agent is excluded.
  • the precipitation should only take place after the sizing agent and the cationic retention agent have been mixed into the fiber suspension.
  • a sizing agent which consists of water, an infinitely miscible organic solvent, a basic compound, an alkali aluminate and a sizing resin.
  • Water-soluble alcohols such as methanol, ethanol and the like are organic solvents. Isopropanol can be used, but water-soluble cartridges, e.g. Acetone and others can be used.
  • the weight ratio of alcohol: sizing component should be between 10: 1 and 1: 2, but is advantageously 5: 1 to 0.5: 1.
  • the amount of organic solvent depends on the solubility and amount of organic sizing component contained in the sizing agent according to the invention must be completely solved.
  • the amount of alkali added also serves to saponify the sizing component, which should be 100%, for example saponification of a saturated or unsaturated fatty acid with 12 to 23 carbon atoms.
  • the sizing component can be a rosin or tall resin, a resin soap or a dry resin glue. Fatty acids with 12 to 23 carbon atoms can also be used.
  • the rosins and tall resins can of course also be present as adducts of maleic or fumaric acid (Diels-Alder's diene synthesis).
  • the preparation of the new sizing agent can be carried out in a very simple manner by mixing the components at room temperature, in such a way that softened or hardness-stabilized water, initially solid alkali aluminate or an aqueous alkali aluminate solution, is introduced into a water reservoir. To avoid precipitation and possibly saponification of the sizing component, sodium hydroxide is introduced in solid or dissolved form. Finally, alcohol and sizing component are added with stirring. The mixture is stirred until complete dissolution of the sizing component has occurred. Based on the total active ingredient content, the alkali content of the new sizing agent is between 5 and 30% by weight, the sodium aluminate content between 10 and 50% by weight and the content of the sizing component between 40 and 85% by weight.
  • Softening or hardness stabilization is necessary to avoid precipitation and is carried out according to known processes (e.g. with ethylenediaminetetraacetic acid and nitrilotriacetic acid).
  • the new sizing agent can be added directly to the fiber suspension to be sized. After mixing in the pulper or in a downstream chest, the sizing agent is activated by means of acids and / or acid-reacting salts, the amount of acid and / or salt being measured so that a pH of about 7 is reached.
  • Cationic retention agents significantly improve the fixation of fiber and filler as well as sizing agents. The amount depends on the type of retention aid. 0.02 to 0.2% by weight, based on the amount of substance, should, however, suffice.
  • so much sizing agent can be introduced into the aqueous suspension of cellulose fibers until a pH of at most 9 is reached.
  • cation-active retention agent in particular a cation-active polymer retention agent, is introduced, homogeneously distributed therein and the sizing agent is activated by adjusting the pH to 7.2 to 7.5.
  • so much sizing agent is added to the aqueous suspension until a pH of 7.5 to 8 or 7.6 to 8 is reached.
  • polyethyleneimine, cationic starch derivatives, polyacrylamide, polymethacrylamide can be introduced into the aqueous suspension, as in the process version already described.
  • Quaternary nitrogen compounds can be used as well as cation-active polymers. Amounts of 0.1 to 0.5% by weight, based on the fiber content of the aqueous suspension, are sufficient to achieve good mass sizing, while the sizing agent in amounts of 0.1 to 10% by weight, based on the fiber content of the suspension and calculated as the solids content. In some cases, amounts of retention agent from 0.02% by weight, based on the amount of substance, should suffice.
  • the sizing agent can be activated by means of acids and / or acid-reacting salts.
  • Organic and inorganic acids that do not form insoluble salts or complex compounds with the aluminum ions are suitable.
  • sulfuric acid and aluminum sulfate formic acid and acetic acid have proven their worth.
  • the new process can also be carried out by first introducing a cationic polymeric retention agent into the aqueous suspension of cellulose fibers having a pH of less than 7, in particular 6.5 to 6.8, and then homogeneously distributed. Subsequently, so much sizing agent is added until a pH greater than 7 is reached. Sufficient sizing agent should be added to the aqueous suspension until a pH of 7.5 to 8 is reached. The pH of the cellulose fiber suspension should not be below 6.
  • the aforementioned agents can be used as cationic retention agents, in amounts of 0.02 to 0.5% by weight, based on the fiber content of the aqueous suspension.
  • Example 2 As in Example 1, 645 parts by weight of water are placed in a stirred vessel. After 50 parts by weight of 50% sodium hydroxide solution and 45 parts by weight of solid sodium aluminate in powder form have been introduced, the mixture is stirred until completely dissolved. Then 135 parts by weight of isopropanol are run in and 125 parts by weight of reinforced powder resin glue are distributed therein. After the powder glue has completely dissolved, a slightly yellow colored solution is present, to which 1 part by weight of sorbitol is added for stabilization. The active ingredient content of the sizing agent is about 20% by weight.
  • 365 parts by weight of process water (city water) with a hardness of 25 ° dH are pumped into a stirred vessel and mixed with 1 part by weight of ethylenediaminetetraacetic acid or nitrilotriacetic acid.
  • 200 parts by weight of a sodium aluminate solution having an Al 2 O 3 content of 19% by weight, 35 parts by weight of sodium hydroxide in flake form and 200 parts by weight of ethanol are then introduced with stirring. Stir until a clear solution has formed.
  • 160 parts by weight of ground rosin and 40 parts by weight of ground rosin and reacted with maleic acid are then introduced and stirred until all solids have dissolved.
  • the end product is a red-brown clear solution with a solids content of 30%.
  • the fibrous batch for the sizing process carried out in this example consists of 85% by weight cellulose (50% spruce sulphite cellulose, 50% bleached pine sulphate cellulose), 10% by weight chalk (filler) and 5% by weight water-soluble starch.
  • the degree of grinding of the mixture is about 30 ° SR.
  • the sizing will made on a 3% fiber insert.
  • the amount of sizing agent according to Example 1 is added to this batch until the effective amount of sizing agent in the batch is 2.5% by weight, based on the fiber material.
  • the suspension is pumped into the mixing chest and brought to a pH of 6.8 with dilute sulfuric acid (50%). A cationic retention agent is then metered in in the usual way.
  • the basis weight range of the sized paper is between 110 and 120 g / m 2 .
  • a wood-containing fabric batch is processed into a semi-sized printing paper.
  • the pulp is first processed in a pulper, then ground and fed to a mixing chest.
  • the 3.5% batch is mixed with a sizing agent according to Example 2 with constant stirring, namely 5 parts by weight of the 20% sizing agent are added to every 100 parts by weight of batch.
  • the suspension is pumped into an intermediate chest and activated there using 10% hydrochloric acid. Activation is complete at pH 6.8.
  • a cationic retention agent, as in Example 7, is then added to improve the fixation of the fiber and filler as well as the sizing agent.
  • the sized mass is processed into paper which has an ash content of 15% by weight (kaolin content) and a weight per unit area of 70 g / cm 2 .
  • the Cobb ( 60 ) is 45.
  • Packaging paper is produced in a waste paper processing plant that works with a very tightly closed water cycle. Dirt load and degree of hardness are therefore high (degrees of hardness greater than 100 ° d.H.)
  • Sizing agent according to Example 2 is introduced into a mixing chest and mixed there well with the waste paper batch. For every 100 g of waste paper there are 2.25% by weight of active ingredient of the sizing agent. The activation is carried out in an intermediate chest with dilute sulfuric acid (50%) or aluminum sulfate. The pH is 6.7 or 6.8 when activated and the consistency is 3.0%; a cationic retention agent is also added.
  • the fully sized wrapping paper has a basis weight of 110 or 120 g / m 2 .
  • the neutral mass sizing is demonstrated with a fabric batch consisting of 50% bleached spruce sulfite pulp and 50% bleached wood pulp.
  • a strongly cationic retention agent (a polyethyleneimine, namely the commercial product Polyimin SK) is added to the batch, which is located in a mixing chest, has a consistency of 4% and a pH of 6.5, in amounts of 0.2% by weight .%, based on the fiber content, entered. After thorough mixing, 2% of sizing agent (100%) is added, produced according to Example 3. Then the mass is pumped around in the machine chest and diluted with about five times the amount of water (in terms of volume) and to the necessary consistency of about Brought 0.8%. After dewatering and drying the paper web, an excellently sized paper is available.
  • the mass sizing is carried out as in Example 7, but without the addition of starch.
  • a fully sized paper with a Cobb (60) value of less than 30 is obtained with a basis weight of the paper of 70 g / m 2 .

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Claims (30)

1. Agent d'encollage dans la masse pour le papier, le carton, les cartonnages et autres matériaux renfermant de la cellulose en milieu neutre, caractérisé en ce que l'agent consiste en de l'eau, en un solvant organique à miscibilité illimitée avec l'eau, en un composé à réaction basique, en un aluminate alcalin et en un composant d'encollage.
2. Agent selon la revendication 1, caractérisé en ce qu'il contient de l'alcool en tant que solvant organique.
3. Agent selon les revendications 1 et 2, caractérisé en ce que le rapport pondéral entre alcool et composant d'encollage s'élève à 10 : 1 à 1 : 2.
4. Agent selon les revendications 1 à 3, caractérisé en ce qu'il contient en tant que composé à réaction basique de l'hydroxyde de sodium, de l'hydroxyde de potassium et/ou de l'hydroxyde d'ammonium.
5. Agent selon les revendications 1 à 4, caractérisé en ce qu'il contient comme composant d'encollage un acide gras saturé ou insaturé ayant 12 à 24 atomes de carbone.
6. Agent selon la revendication 5, caractérisé en ce qu'il contient en tant que composant d'encollage un acide gras totalement saponifié.
7. Agent selon les revendications 1 à 3, caractérisé en ce qu'il contient en tant que composant d'encollage une résine de colophane.
8. Agent selon les revendications 1 à 3, caractérisé en ce qu'il contient en tant que composant d'encollage une résine de tall.
9. Agent selon les revendications 1 à 4, caractérisé en ce qu'il contient en tant que composant d'encollage une résine de colophane ayant réagi avec de l'acide maléique ou de l'acide fumarique.
10. Agent selon les revendications 1 à 4, caractérisé en ce qu'il contient en tant que composant d'encollage une résine de tall ayant réagi avec de l'acide fumarique ou maléique.
11. Agent selon les revendications 1 à 10, caractérisé en ce qu'il contient 5 à 30% en poids d'alcalis, 10 à 50% en poids d'aluminate et 40 à 85% en poids de composant d'encollage.
12. Agent d'encollage selon les revendications 1 à 11, caractérisé en ce qu'il contient en tant qu'agent de stabilisation 0,25% en poids de sorbitol par rapport à la teneur en matière solide de l'agent.
13. Procédé d'encollage dans la masse du papier, du carton, des cartonnages et autres matériaux contenant de la cellulose en milieu neutre, par addition de l'agent d'encollage à une suspension de fibres de cellulose et cationisation avec un agent de rétention polymère catioactif, caractérisé en ce qu'on utilise l'agent d'encollage selon les revendications qui précèdent en des quantités de 0,1 à 10% en poids par rapport à la teneur en matière solide, on active et l'on cationise avec un agent de rétention catioactif, en particulier un agent de rétention polymère.
14. Procédé selon la revendication 13, caractérisé en ce qu'on introduit l'agent d'encollage dans la suspension de fibres, on le distribue de manière homogène, on active et l'on cationise avec un agent de rétention.
15. Procédé selon la revendication 14, caractérisé en ce qu'on exécute l'activation par neutralisation avec des acides minéraux ou organiques à une valeur de pH voisine de 7, en particulier de 6,8 à 7,2.
16. Procédé selon la revendication 14, caractérisé en ce qu'on exécute l'activation par neutralisation avec des sels à réaction acide.
17. Procédé selon la revendication 15, caractérisé en ce qu'on exécute l'activation avec de l'acide sulfurique ou de l'acide formique.
18. Procédé selon la revendication 16, caractérisé en ce qu'on exécute l'activation avec du sulfate d'aluminium.
19. Procédé selon la revendication 13, caractérisé en ce qu'on ajoute dans une suspension aqueuse de fibres de cellulose une quantité suffisante d'agent d'encollage pour acquérir une valeur de pH atteignant un maximum de 9, on introduit ensuite un agent de rétention polymère catioactif, on l'y distribue de manière homogène et l'on active l'agent d'encollage par réglage de la valeur du pH à 7,2 à 7,5.
20. Procédé selon la revendication 19, caractérisé en ce qu'on introduit suffisamment d'agent d'encollage dans la suspension aqueuse pour atteindre une valeur de pH de 7,6 à 8.
21. Procédé selon les revendications 19 et 20, caractérisé en ce qu'on exécute l'activation par réglage de la valeur du pH avec des acides minéraux ou organiques.
22. Procédé selon les revendications 19 et 20, caractérisé en ce qu'on exécute l'activation par neutralisation avec des sels à réaction acide.
23. Procédé selon la revendication 22, caractérisé en ce qu'on exécute l'activation avec du sulfate d'aluminium.
24. Procédé selon les revendications 19 à 21, caractérisé en ce qu'on exécute l'activation avec de l'acide sulfurique ou de l'acide formique.
25. Procédé selon les revendications 13 à 24, caractérisé en ce qu'on introduit en tant qu'agent de rétention catioactif de la polyéthylène imine, de l'amidon cationique, de la polyacrylamide, de la polyméthacrylamide et/ou un composé azoté quaternaire dans la suspension aqueuse.
26. Procédé selon les revendications 13 à 25, caractérisé en ce qu'on introduit l'agent de rétention catioactif en des quantités de 0,1 à 0,5% en poids par rapport à la teneur en fibres de la suspension aqueuse.
27. Procédé selon la revendication 13, caractérisé en ce que dans une suspension aqueuse de fibres de cellulose ayant une valeur de pH de 6,5 à 6,9 on introduit d'abord un agent de rétention polymère catioactif et l'y distribue de manière homogène et l'on introduit ensuite suffisamment d'agent d'encollage pour atteindre une valeur de pH supérieure à 7.
28. Procédé selon la revendication 27, caractérisé en ce qu'on introduit suffisamment d'agent d'encollage dans la suspension aqueuse pour atteindre une valeur de pH de 7 à 8.
29. Procédé selon les revendications 27 et 28, caractérisé en ce qu'on introduit en tant qu'agent de rétention catioactif de la polyéthylène imine, de l'amidon catioactif de la polyacrylamide, de la polyméthacrylamide et/ou un composé azoté quaternaire dans la suspension aqueuse.
30. Procédé selon les revendications 27 à 29, caractérisé en ce qu'on introduit l'agent de rétention catioactif en des quantités de 0,02 à 0,5% en poids par rapport à la teneur en fibres de la suspension aqueuse.
EP83112302A 1982-12-08 1983-12-07 Agent et procédé pour l'encollage neutre Expired EP0112525B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112302T ATE26005T1 (de) 1982-12-08 1983-12-07 Mittel und verfahren zur neutralleimung.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3245390 1982-12-08
DE19823245390 DE3245390C1 (de) 1982-12-08 1982-12-08 Mittel und Verfahren zur Neutralleimung
DE3338088 1983-10-20
DE3338087 1983-10-20
DE19833338088 DE3338088C1 (de) 1982-12-08 1983-10-20 Verfahren zur Neutralleimung von Papier, Karton, Pappe und anderen cellulosehaltigen Materialien
DE19833338087 DE3338087C1 (de) 1982-12-08 1983-10-20 Verfahren zur Neutralleimung von Papier, Karton, Pappe und anderen cellulosehaltigen Materialien

Publications (2)

Publication Number Publication Date
EP0112525A1 EP0112525A1 (fr) 1984-07-04
EP0112525B1 true EP0112525B1 (fr) 1987-03-18

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Application Number Title Priority Date Filing Date
EP83112302A Expired EP0112525B1 (fr) 1982-12-08 1983-12-07 Agent et procédé pour l'encollage neutre

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US (1) US4591412A (fr)
EP (1) EP0112525B1 (fr)
DE (1) DE3370360D1 (fr)

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US5411639A (en) * 1993-10-15 1995-05-02 Westvaco Corporation Process for enhancing sizing efficiency in filled papers
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US6033526A (en) * 1994-12-28 2000-03-07 Hercules Incorporated Rosin sizing at neutral to alkaline pH
EP0808944A3 (fr) * 1996-05-21 1998-04-15 BECKER GROUP EUROPE GmbH Fabrication d'objets thermoformables
US6572736B2 (en) 2000-10-10 2003-06-03 Atlas Roofing Corporation Non-woven web made with untreated clarifier sludge
BR0103827B1 (pt) * 2001-06-22 2012-08-21 cola - pds.
WO2007087037A2 (fr) * 2005-12-16 2007-08-02 Atlantic Recycling Technologies, Llc. Système et procédé de désintégration humide permettant de produire un isolant cellulosique à faible teneur en cendres

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Publication number Publication date
DE3370360D1 (en) 1987-04-23
EP0112525A1 (fr) 1984-07-04
US4591412A (en) 1986-05-27

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