EP2496767B1 - Matériau de couchage pour améliorer la qualité et les propriétés de déplacement de supports d'impression et procédé de préparation du matériau de couchage - Google Patents

Matériau de couchage pour améliorer la qualité et les propriétés de déplacement de supports d'impression et procédé de préparation du matériau de couchage Download PDF

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Publication number
EP2496767B1
EP2496767B1 EP10776599.2A EP10776599A EP2496767B1 EP 2496767 B1 EP2496767 B1 EP 2496767B1 EP 10776599 A EP10776599 A EP 10776599A EP 2496767 B1 EP2496767 B1 EP 2496767B1
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EP
European Patent Office
Prior art keywords
mol
coloured coating
coating slip
additive
pigment
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EP10776599.2A
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German (de)
English (en)
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EP2496767A2 (fr
Inventor
Christoph Baumeister
Manfred Baumeister
Josef Weigl
Christian Weigl
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Baumeister Chemicals & Consulting & Co KG GmbH
Weipatech GmbH
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Baumeister Chemicals & Consulting & Co KG GmbH
Weipatech GmbH
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    • 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
    • D21H17/15—Polycarboxylic acids, e.g. maleic acid
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/53—Polyethers; Polyesters
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/52—Cellulose; 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/64—Inorganic compounds

Definitions

  • the present invention relates to a paint for painting a print substrate such as paper, paperboard and cardboard and a method for producing the paint.
  • Coating paints essentially consist of a pigment or pigment mixture dispersed in water with the aid of a dispersing agent and binders, as well as certain amounts of additives.
  • Talcum as a pigment reduces the adhesive and sliding friction coefficients of the coated paper and slows the discharge rate at electrostatic charge. In the paper industry, therefore, the coefficient of static friction and sliding friction is included in quality control. New studies have shown, however, that the mechanism of action of talc to avoid core placements, especially by increasing the surface and volume resistance. is significantly determined by a higher charge and slow discharge of the paper. However, high electrolyte contents or high conductivity have a counterproductive effect on the preferred properties of talc.
  • talc is much more expensive compared to conventionally used gravure kaolins and has additional disadvantages of less whiteness, very poor dispersibility, and unfavorable rheological behavior when processed on the coater. Processing problems such as streaking when applying the coating to the raw paper are very common, resulting in a higher proportion of non-salable paper.
  • talcum was important in the prior art in order to avoid so-called core plots when unwinding very wide and large rolls in the gravure printing machine.
  • Core plots or crevices in the LWC offset occur when sudden unwinding occurs during unwinding, whereby the extensibility of the paper is exceeded and local tears or, in the case of an LWC offset, crepe creases or bursting of the web occur.
  • Kernplatzer lead in the gravure printing machine to a web break. Above all, however, the residual amounts of paper on the unwound roll are no longer printable, so that the residual roll must be fed to the broke. This results in significant economic losses.
  • WO 2008/105717 A1 a coating for painting a print substrate, which in addition to pigment, binder and electrolytic constituents and polyethylene glycol having a molecular weight of 20,000 g / mol.
  • the object of the present invention is to at least partially reduce or remedy the disadvantages known in the prior art and, in particular, to provide a coating color which is cost-effective to produce due to the saving of raw materials and moreover has improved paper properties and printability and printability properties. and can be processed at high machine speeds.
  • the above object is achieved by a coating paint as claimed in claim 1.
  • the method for producing this coating color according to claim 11 solves the aforementioned object, wherein preferred embodiments of the invention are the subject of the respective subclaims.
  • the coating composition according to the invention for painting a printing carrier such as paper, cardboard and cardboard, comprises as constituents at least water, pigment and a binder, wherein, moreover, the coating color has in particular electrolytic constituents and at least two additives.
  • At least one high molecular weight polyether is used as the first additive according to the present invention for the coating color and at least one polyfunctional alcohol and / or a low molecular weight polyether and / or a micellar fatty acid dispersion as the second additive, the first and second additive containing the electrolytic constituents of the coating color, in particular their motion and mobility in the aqueous phase of an electric double layer of the Restricts pigments and thereby leads to an extension of the discharge time in the dried line.
  • pigment refers in particular to minerals which are, for example, kaolin, chalk, talc, calcium carbonates, titanium dioxide, aluminum hydroxides, bentonites, barium sulphates, synthetic fillers or plastic particles, dyes, combinations thereof and the like.
  • Binders according to the present invention are in particular polymers understood which in particular natural binders such as starch, casein, soy protein, cellulose ethers, vegetable proteins of other origin, synthetic binders especially in dispersion form, as well as in water-soluble form and basis of styrene-butadiene, styrene (meth ) Acrylate esters, vinyl acetate-ethylene, vinyl acetate acrylate esters, vinyl acetate and polyvinyl alcohols, combinations thereof, and the like.
  • natural binders such as starch, casein, soy protein, cellulose ethers, vegetable proteins of other origin
  • the electrolytic constituents in particular salts such as sodium chloride, calcium chloride, ammonium salts, hardening components in water, especially water-soluble polyelectrolytes such as natural and / or synthetic components such as carboxymethylcellulose (CMC), acrylic acid, methacrylic acid, fumaric acid, itanconic acid , Combinations thereof and the like understood.
  • salts such as sodium chloride, calcium chloride, ammonium salts
  • hardening components in water especially water-soluble polyelectrolytes such as natural and / or synthetic components such as carboxymethylcellulose (CMC), acrylic acid, methacrylic acid, fumaric acid, itanconic acid , Combinations thereof and the like understood.
  • CMC carboxymethylcellulose
  • the first additive according to the present invention is selected from a group consisting of high molecular weight polyethers such as straight-chain or branched high molecular weight polyethylene glycols, high molecular weight polypropylene glycols straight-chain or branched, mixtures of polyethylene glycols with polypropylene glycol, ethylene oxide / propylene oxide polyethers, reaction products of polyethylene glycol with bisphenol A diglycidic ethers, ester and ether products, associative thickeners on HEUR (Hydrophobicly Modified Ethoxylated Urethane) base, crown ethers, cyclic ethers, combinations thereof and the like understood.
  • HEUR Hydrophilic ether
  • the corresponding high molecular weight polyethers used as the first additive have, in particular, a molecular weight which is greater than 20,000 g / mol or preferably between 20,000 g / mol and 1,000,000 g / mol, more preferably between 20,000 g / mol and 50,000 g / mol and in particular about 35,000 g / mol.
  • the second additive is selected from a group which comprises, inter alia, low molecular weight polyethylene glycols which are straight-chain or branched, low molecular weight polypropylene glycols which are straight-chain or branched, mixtures of polyethylene glycol and polypropylene glycol, ethylene oxide / propylene oxide polyethers, reaction products of polyethylene glycol and bisphenol A diglycidic ethers, as well as polyfunctional glycidyl ethers based on polyfunctional alcohols, micellar fatty acid dispersion (C 12 to C 21 ), for example stearic acid dispersions prepared using ammonia, organic armines or polymeric bases such as polydimethylethyl methacrylate as neutralizing component, Co Polymers of polyglycol methacrylates with acrylic acid or with methacrylic acid, N-vinylpyrrolidone or N-vinylactam copolymers with hydroxyethyl or Polyglykolmethy
  • the second additives have a molecular weight which is in particular less than 20,000 g / mol.
  • the molecular weight of the second additive is between 100 g / mol and less than 20,000 g / mol, preferably between 1,500 g / mol and less than 20,000 g / mol, more preferably between 3,000 g / mol and less than 20,000 g / mol and in particular at 4,000 g / mol or at about 10,000 g / mol.
  • the coating color according to the invention is further characterized in that the limited mobility of the electrolytic constituents is achieved in particular by an increase in the surface and / or volume resistance of the coating or coated paper and / or the conductivity in the dried coating layer is reduced.
  • the coating color according to the invention comprises further constituents such as, for example, optical brighteners, dyes, rheological aids, combinations thereof and the like.
  • the coating composition of the invention reduces by the use of the first and second additive in particular the mobility of the electrolytic components - preferably in the dried line - in that advantageously the electrolytic components by absorption on the pigment and / or by immobilization and / or fixation and / or Complexation be bound at least temporarily.
  • the first and / or the second additive in particular non-ionic property, wherein according to a further particularly preferred embodiment, the first and / or second additive may be weakly anionic or weakly cationic equipped.
  • the total amount of first and / or second additives which are added to the coating color in relation to the total pigment content is between 0.05 and 2.5 parts, preferably between 0.1 and 1.5 parts, and especially preferably between 0.15 and 1 part.
  • the coating color according to the invention is prepared in such a way that it can be used in particular for processing with applicators such as, for example, film presses, curtain coater, spray application, roller coating method, blade coating method, blade coater, speed coater, Massey's method, flooded nip, combinations thereof and the like are known in the art.
  • applicators such as, for example, film presses, curtain coater, spray application, roller coating method, blade coating method, blade coater, speed coater, Massey's method, flooded nip, combinations thereof and the like are known in the art.
  • GCC ground calcium carbonate, ground calcium carbonate
  • the coating color is used for a print carrier, as is the case in particular when processing in offset, Gravure printing, inkjet, flexographic printing, laser printing, screen printing, high pressure, combinations thereof and the like is used.
  • the object of the present invention is also achieved by a process for the production of a coating color which comprises at least the following steps: presentation of a pigment dispersion, which is initially introduced as a finished pigment dispersion or prepared as a corresponding pigment dispersion, ie a dispersion preferably of the pigment and water and optionally a dispersant is prepared in a corresponding container.
  • a pigment dispersion which is initially introduced as a finished pigment dispersion or prepared as a corresponding pigment dispersion, ie a dispersion preferably of the pigment and water and optionally a dispersant is prepared in a corresponding container.
  • the addition of the first additive which is in particular a high molecular weight polyether and in particular with respect to the first additive further determined.
  • a second additive is added, which is in particular a polyfunctional alcohol and / or a low molecular weight polyether and / or a micellar fatty acid dispersion and is more precisely determined with respect to the second additive.
  • binders In addition to the addition of the first and second additives, further components such as binders, CMC, synthetic thickeners, polyvinyl alcohols, starch, optical brighteners, calendering aids, combinations thereof and in the same are added according to the inventive method before the corresponding coating color is completely dispersed.
  • the first and second additive is added as a mixture of the pigment or the pigment dispersion, wherein, as already stated above, the pigment is introduced as a finished pigment dispersion or the pigment is directly prepared as a dispersion in water.
  • the proportion of the second additive increases with increasing molecular weight in relation to the proportion of the first additive.
  • the coating color to be produced in accordance with the above method is adjusted to a pH value which is preferably between 7.5 and 8.8 and in particular between 8.5 and 8.7 by the addition of an alkali or an acid ,
  • polyethers and micellar stearic acid dispersions adsorb on the pigment surface.
  • the ions fixed in the electric double layer are restricted or complexed by the adsorption in their mobility, whereby the discharge rate is reduced by static charge
  • the use of the additives according to the invention results in improved printability and printability properties in both gravure and offset printing.
  • Polyethylene glycol is a so-called linear crown ether.
  • Linear crown ethers can adopt a cyclic conformation to complex metal ions, as in Fig.1 , represented, so that, for example, alkali metal ions can be complexed in the resulting cavity.
  • the high molecular weight polyethylene glycol acts as a so-called "podand".
  • the fading of the ink film can be explained by a diffusion of the low molecular weight polyethylene glycols into the ink film and the complexing of the central atom of the phthalocyanine-based pigments.
  • low molecular weight polyethylene glycols can also be used as a carrier for optical brighteners, as well as stabilizers and lubricants in coating colors.
  • Table 7 illustrates combinations of the first with the second additive.
  • a high molecular weight polyether was used in combination with a low molecular weight polyether.
  • a high molecular weight polyether having a molecular weight of 50,000 g / mol was used, the proportion of the second additive relative to the total amount of polyether used being 1-10% at low molecular weight (1,000 g / mol). 30% (10,000 g / mol) increased.
  • Variant 2 shows the use of a high molecular weight polyether having a molecular weight of 30,000 g / mol and the proportion of the second additive in relation to the total amount of polyether used of 0.5 to 5% with a molecular weight of 1000 g / mol up to 10-15 % or 15-20% when using a second polyether having a molecular weight of 10,000 g / mol.
  • the measurements of the loading and unloading behavior of the coated papers were carried out with the Static Charge Analyzer, model 276A from Monroe Electronics.
  • the degree of charge of the samples is characterized by the field strength emanating from the samples due to their charge.
  • Three measuring points under the rotating measuring plate record the field strength of the charged samples and forward the measurement curve to a recorder.
  • the recorder records the measured voltage over time. It revealed Curves with the in Fig. 2 illustrated basic course, which are evaluated manually.
  • the decay of the maximum charging voltage can be approximately described by an exponential function.
  • U0 is the maximum charging voltage that can be transferred to the paper.
  • Fig. 2 is apparent. It should be noted that the height of the determined discharge times only give an indication of the particular embodiment, ie the discharge times can not be compared with other embodiments because of different measurement conditions.
  • the base paper used was a wood-containing intaglio coating paper with a basis weight of 46 g / m 2 .
  • a high-performance dispersing device was used to produce the coating color.
  • a self-thickening SB-TD binder (Dow-Chemical) as well as polyethylene glycol with different molecular weights (Clariant) as well as micellar stearic acid dispersion and stearylamine were introduced with stirring into the TD-kaolin slurry (AKW-Hirschau). The pH was adjusted with NaOH.
  • the solids content was determined according to DIN ISO 787 Part 2, the pH according to DIN ISO 787 Part 9, the low shear viscosity according to Brookfield at 100 U / min according to DIN ISO 2555.
  • the coating colors were applied by means of a motorized hand doctor blade (Erichsen K Control Coater) to wood-containing base paper with an application rate of 10 g / m 2 .
  • the thus-coated paper is calendered in a laboratory calender under the following conditions. Roll surface temperature: 95 ° C Line force: 200 N / mm Speed: 10 m / min Number of passes 4
  • Table 1 shows the influence of the different coating compositions on the electrostatic charge when winding large rolls for LWC gravure, with which also corresponding core place places can be avoided or reduced.
  • the desired discharge time of the discharge time which in practice was 15-30 parts of talc between 0.8-0.9 seconds (see Example 2), could not be achieved.
  • a combination of e.g. PEG and zeolite to support the reduction of conductivity conceivable.
  • the test coats are at a h' inconveniences 36 g / m 2 Base paper on a test machine, applied at a speed of 120 / m / min.
  • the coating weight was 8 - 9 g / m 2 on both sides.
  • the coated papers were then calendered on a laboratory calender at a roll temperature of 90 ° C and a contact pressure of 150 kN / m with two nips per side.
  • Determination methods for paper and printability evaluation determination of opacity according to 53 146/3; Whiteness ISO 2470, PPS Roughness ISO 8791-4 .; Smoothness according to Bekk DIN 53107/7; Paper gloss 75 ° / 75 °; Printing gloss Tappi 75 ° / 75 °; Gravure tests IGT Heliotest (missing halftone dots / cm 2 ).
  • the high shear viscosity increases sharply with both high molecular weight PEG and stearic micelles (V 4 and V 5).
  • significant advantages in smoothness, gloss and printability development are achieved compared to the standard formulations (V1 and V2).
  • the recipe according to experiments V6 and V7 also shows that even with relatively large amounts (up to 50 parts for gravure printing) of a coarse calcium carbonate (GCC 70% ⁇ 2 microns) processing results of the coated paper can be achieved, in which there are essentially no disadvantages occur at the printability.
  • the use of the coarse calcium carbonate allows a reduction of the binder content, for example, from about 4.5 to 5.0 parts to 3 to 3.5 parts.
  • the coating is 10 g / m 2 .
  • the tests according to Table 4 show that the high molecular weight PEG products and the stearic acid dispersion are also fully effective in offset formulations with respect to a discharge time delay, while the low molecular weight PEG eg V 2 MG 2000 rather adversely affect the discharge time, ie a faster discharge lead the papers.
  • test results according to Table 5 confirm, on the one hand, the positive influence of the additives on the surface and volume resistance and discharge process (high surface and volume resistance and slower discharge of the papers result in a problem-free running behavior (with respect to crepe wrinkles) and a significant increase in gloss and smoothness like this This also provides the opportunity to create moderate calendering conditions with the advantages already mentioned.
  • the use of the described additives should provide economic benefits such as e.g. Use of low-cost coarse kaolin, calcium carbonate and binder savings can be developed without loss of quality.
  • the pigments and binders used were GCC 95% ⁇ 2 ⁇ m, GCC 90% ⁇ 2 ⁇ m (Omya), Feinstkaolin 98% ⁇ 2 ⁇ m (Imerys), Grobkaolin 70% ⁇ 2 ⁇ m (AKW) and SB-Binder (BASF). The experiments were carried out under the same experimental conditions and their evaluation as in Embodiment 3.
  • the finely divided kaolin is replaced by a much coarser kaolin.
  • rheological improvements and a higher gloss value than with the standard finely divided kaolin are achieved. If kaolin is completely replaced by GCC, the solids content can be drastically increased and higher gloss achieved with coarser GCC than the standard. Since coarser pigments have a lower binder requirement, binders can also be saved. Due to the higher solids content of V3 and the lower binder penetration into the base paper, the binder savings are even more pronounced.

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Claims (15)

  1. Peinture de couchage pour la peinture d'un support d'impression, par exemple du papier, du carton-pâte et du carton, qui présente de l'eau, au moins un pigment, au moins un liant et
    des éléments électrolytiques, qui sont sélectionnés à partir d'un groupe, qui présente des sels, des polyélectrolytes solubles dans l'eau, de la cellulose carboxyméthylique, de l'acide acrylique, de l'acide méthacrylique, de l'acide fumarique, de l'acide itaconique et des combinaisons de ceux-ci, et
    au moins deux additifs,
    caractérisée en ce que la peinture de couchage
    présente en tant que premier additif avec un poids moléculaire supérieur à 20.000 g/mole au moins un polyéther macromoléculaire et
    un second additif avec un poids moléculaire inférieur à 20.000 g/mole, qui est sélectionné à partir d'un groupe, qui présente des polyéthylèneglycols de faible poids moléculaire linéaires ou ramifiés, des polypropylèneglycols de faible poids moléculaire linéaires ou ramifiés, des mélanges de polyéthylèneglycols avec des polypropylèneglycols, de l'oxyde d'éthylène / des polyéther d'oxyde de propylène, du produit de réaction des polyéthylèneglycols avec des éthers diglycidiques de bisphénol A ainsi que des éthers glycidiques polyfonctionnels sur la base d'alcools polyfonctionnels, des dispersions micellaires d'acide gras (C12 à C21), par exemple des dispersions d'acide stéarique, qui sont fabriquées en utilisant de l'ammoniac, des amines organiques et/ou des bases polymères, comme le polydiméthyléthyleméthacrylate comme composant de neutralisation, des copolymères de polyglycolméthacrylates avec de l'acide acrylique et/ou de l'acide métacrylique, du N-vinylpyrrolidone, et/ou des copolymères de N-vinyle-lactame avec des méthacrylates d'hydroxyéthyle et/ou de polyglycol, des amines d'acide gras, des aminopolyglycols, des combinaisons de ceux-ci, et
    le premier et le second additif limitant au moins partiellement la mobilité des composants électrolytiques de la peinture de couchage dans leur mouvement dans la phase aqueuse d'une double couche électrique du pigment et entraînant par conséquent une prolongation du temps de déchargement dans la couche de peinture séchée.
  2. Peinture de couchage selon une quelconque des revendications nommées ci-dessus, caractérisée en ce que
    la peinture de couchage présente d'autres composants, comme par ex. des azurants optiques, des colorants et des agents rhéologiques ainsi que des combinaisons de ceux-ci.
  3. Peinture de couchage selon une quelconque des revendications nommées ci-dessus, caractérisée en ce que
    le pigment est sélectionné à partir d'un groupe de matières, qui comprend des minéraux comme par exemple des kaolins, du talc, des carbonates de calcium, du dioxyde de titane, des hydroxydes d'aluminium, des bentonites, des sulfates de baryum, des matières de charge synthétiques et/ou des particules en plastique, des colorants, des combinaisons de ceux-ci et/ou
    le liant et sélectionné à partir d'un groupe qui comprend
    notamment des liants naturels, comme l'amidon, la caséine, les protéines de soja, l'éther de cellulose, des protéines végétales d'une autre origine, des liants synthétiques sous forme de dispersion ainsi que sous forme hydrosoluble à base de styrène-butadiène, d'esters de (méth)acrylate de styrène, d'acétate de vinyle-éthylène, d'esters d'acrylate de vinylacétate, de vinylacétate ainsi que d'alcools de polyvinyle, et des combinaisons de ceux-ci.
  4. Peinture de couchage selon une quelconque des revendications précédentes, caractérisée en ce que
    le premier additif est sélectionné à partir d'un groupe, qui présente des polyéthers macromoléculaires comme par exemple des polyéthylèneglycols macromoléculaires linéaires ou ramifiés, des polypropylèneglycols macromoléculaires linéaires ou ramifiés, des mélanges de polyéthylèneglycols avec des polypropylèneglycols, des oxydes d'éthylène / des polyéthers d'oxyde de propylène, un produit de réaction des polyéthylèneglycols avec des éthers diglycidiques de bisphénol A, de l'éther-couronne, de l'éther cyclique, des combinaisons de ceux-ci, et
    présente un poids moléculaire, qui se trouve de préférence entre 20.000 g/mole et 1.000.000 g/mole, de préférence particulière entre 20.000 g/mole et 50.000 g/mole et notamment à env. 35.000 g/mole.
  5. Peinture de couchage selon une quelconque des revendications précédentes, caractérisée en ce que
    le second additif présente un poids moléculaire, qui se trouve de préférence entre 100 g/mole et moins de 20.000 g/mole, de manière favorisée entre 1.500 g/mole et moins de 20.000 g/mol, de préférence particulière entre 3.000 g/mole et moins de 20.000 g/mole et notamment à env. 4.000 g/mole et/ou env. 10.000 g/mole.
  6. Peinture de couchage selon une quelconque des revendications précédentes, caractérisée en ce que
    le premier et/ou le second additif est non ionogène ou faiblement anionique et/ou faiblement cationique.
  7. Peinture de couchage selon une quelconque des revendications précédentes, caractérisée en ce que
    entre 0,05 et 2,5 parties du premier et/ou du second additif, en se référant à la part de pigment totale, de préférence entre 0,1 et 1,5 parties, et de préférence particulière entre 0,15 et 1,0 parties sont utilisées.
  8. Peinture de couchage selon une quelconque des revendications précédentes, caractérisée en ce que
    entre une partie et 70 parties, de préférence entre 25 parties et 50 parties, de préférence particulière jusqu'à 50 parties du pigment de carbonate de calcium sont utilisées, notamment du carbonate de calcium trituré, dont la distribution granulométrique se trouve à entre 60 % et 75 % < 2 µm.
  9. Utilisation de la peinture de couchage selon une quelconque des revendications précédentes en vue du traitement avec un dispositif d'application, comme par exemple une presse à film, un Curtain-Coater, une application par pulvérisation, un procédé de couchage au rouleau, un procédé de couchage à la racle, un Blade-Coater, un Speed-Coater, un Flooded-Nip.
  10. Utilisation d'une peinture de couchage selon une quelconque des revendications précédentes en vue de la fabrication d'un support d'impression, notamment pour un support d'impression qui est traité par offset, par héliogravure rotative, par jet d'encre, par flexographie, par impression laser, par sérigraphie, par typographie et des combinaisons de ceux-ci.
  11. Procédé en vue de la fabrication d'une peinture de couchage, avec les étapes de :
    - Présentation d'une dispersion de pigment,
    - Addition d'un liant selon la revendication 3,
    - Addition d'un élément électrolytique, qui est sélectionné à partir d'un groupe, qui présente des sels, des polyélectrolytes solubles dans l'eau, de la cellulose carboxyméthylique, de l'acide acrylique, de l'acide méthacrylique, de l'acide fumarique, de l'acide itaconique et des combinaisons de ceux-ci,
    - Addition d'un premier additif qui, avec un poids moléculaire supérieur à 20.000 g/mole, présente au moins un polyéther macromoléculaire,
    - Addition d'un second additif qui est sélectionné à partir d'un groupe, qui présente des polyéthylèneglycols de faible poids moléculaire linéaires ou ramifiés, des polypropylèneglycols de faible poids moléculaire linéaires ou ramifiés, des mélanges de polyéthylèneglycols avec des polypropylèneglycols, de l'oxyde d'éthylène / des polyéther d'oxyde de propylène, du produit de réaction des polyéthylèneglycols avec des éthers diglycidiques de bisphénol A ainsi que des éthers glycidiques polyfonctionnels sur la base d'alcools polyfonctionnels, des dispersions micellaires d'acide gras (C12 à C21), par exemple des dispersions d'acide stéarique, qui sont fabriquées en utilisant de l'ammoniac, des amines organiques et/ou des bases polymères, comme le polydiméthyléthyleméthacrylate comme composant de neutralisation, des copolymères de polyglycolméthacrylates avec de l'acide acrylique et/ou de l'acide métacrylique, du N-vinylpyrrolidone, et/ou des copolymères de N-vinyle-lactame avec des méthacrylates d'hydroxyéthyle et/ou de polyglycol, des amines d'acide gras, des aminopolyglycols, des combinaisons de ceux-ci, et
    - Addition d'autres composants comme par exemple des liants, de la CMC, des épaississants synthétiques, de l'alcool de polyvinyle, de l'amidon, des azurants optiques, des agents de calandrage, des combinaisons de ceux-ci,
    - Dispersion de la peinture de couchage.
  12. Procédé en vue de la fabrication de la peinture de couchage selon la revendication 11, caractérisé en ce que
    notamment entre l'addition du premier et du second additif, un ajustement de la valeur de pH de la préparation de peinture de couchage s'effectue entre 7,5 à 8,8, de manière favorisée entre 8,5 et 8,7.
  13. Procédé en vue de la fabrication de la peinture de couchage selon une quelconque des revendications 11 ou 12, caractérisé en ce que
    le pigment et/ou la dispersion de pigment est prédispersé avec au moins un des deux additifs.
  14. Procédé en vue de la fabrication de la peinture de couchage selon une quelconque des revendications 11 à 13, caractérisé en ce que
    le premier et le second additif sont ajoutés comme mélange au pigment et/ou à la dispersion de pigment.
  15. Procédé selon au moins une quelconque des revendications 11 à 14 en vue de la fabrication d'une peinture de couchage selon une quelconque des revendications 1 à 8.
EP10776599.2A 2009-11-05 2010-10-15 Matériau de couchage pour améliorer la qualité et les propriétés de déplacement de supports d'impression et procédé de préparation du matériau de couchage Not-in-force EP2496767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910044430 DE102009044430A1 (de) 2009-11-05 2009-11-05 Streichfarbe zur Verbesserung der Qualitäts- und Laufeigenschaften von Druckträgern und Herstellungsverfahren der Streichfarbe
PCT/EP2010/065548 WO2011054655A2 (fr) 2009-11-05 2010-10-15 Matériau de couchage pour améliorer la qualité et les propriétés de déplacement de supports d'impression et procédé de préparation du matériau de couchage

Publications (2)

Publication Number Publication Date
EP2496767A2 EP2496767A2 (fr) 2012-09-12
EP2496767B1 true EP2496767B1 (fr) 2018-08-29

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EP (1) EP2496767B1 (fr)
DE (1) DE102009044430A1 (fr)
WO (1) WO2011054655A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2617559T3 (es) 2014-05-26 2017-06-19 Omya International Ag Carbonato de calcio para medio de impresión en rotograbado
WO2017207438A1 (fr) 2016-06-02 2017-12-07 Baumeister Chemicals&Consulting Gmbh & Co. Kg Additif pour composition de revêtement

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5352503A (en) * 1992-09-21 1994-10-04 Rexham Graphics Inc. Recording paper for ink jet recording processes
DE19601245A1 (de) * 1996-01-16 1997-07-17 Haindl Papier Gmbh Rollendruckpapier mit Coldset-Eignung und Verfahren zu dessen Herstellung
DE10108349A1 (de) * 2001-02-21 2002-08-29 Basf Ag Papierstreichmassen
CA2459235C (fr) * 2001-09-03 2009-11-10 Basf Aktiengesellschaft Procede pour augmenter la blancheur du papier a l'aide de polyelectrolytes cationiques
DE10149313A1 (de) * 2001-10-05 2003-04-17 Bayer Ag Verwendung wässriger Aufhellerpräparationen zum Aufhellen von natürlichen und synthetischen Materialien
JP2004107834A (ja) * 2002-09-19 2004-04-08 Fuji Photo Film Co Ltd 粉体塗布型支持体の製造方法及び粉体塗布型支持体
DE10307494A1 (de) * 2003-02-21 2004-09-02 Weipatech Gmbh Multifunktional einsetzbare Streichfarbendispersion für Druckträger
CA2678745A1 (fr) * 2007-02-26 2008-09-04 Akzo Nobel N.V. Composition de pigment

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DE102009044430A1 (de) 2011-05-12
WO2011054655A2 (fr) 2011-05-12
EP2496767A2 (fr) 2012-09-12

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