WO2011054655A2

WO2011054655A2 - Coloured coating slip for enhancing the quality properties and running properties of print media, and production method for the slip

Info

Publication number: WO2011054655A2
Application number: PCT/EP2010/065548
Authority: WO
Inventors: Christoph Baumeister; Manfred Baumeister; Josef Weigl; Christian Weigl
Original assignee: Weipatech Gmbh; Baumeister Chemicals&Consulting Gmbh & Co. Kg
Priority date: 2009-11-05
Filing date: 2010-10-15
Publication date: 2011-05-12
Also published as: WO2011054655A3; DE102009044430A1; EP2496767A2; EP2496767B1

Abstract

The present invention relates to a coloured coating slip for coating a print medium such as paper, paperboard and cardboard, for example, which comprises water, at least one pigment, at least one binder, electrolytic constituents, and at least two additives. The coloured coating slip is characterized in that it comprises as first additive at least one high molecular mass polyether and as second additive at least one polyfunctional alcohol and/or low molecular mass polyether and/or micellar fatty acid dispersion, the first and second additives at least partly restricting the electrolytic constituents of the slip in terms of their movement in the aqueous phase of an electrical double layer of the pigment, and leading to a retardation of the discharge time in the dried slip coat. The invention also encompasses a method for producing the coloured coating slip.

Description

Coating paint for improving the quality and running properties of print carriers and production methods of the coating color

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. In the prior art, coating colors for the production of coated

Print media known. 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.

The manufacturers of coated papers for offset and gravure printing are under massive due to the increasing competition with electronic media

Cost pressures and have to look for ways to further reduce the manufacturing cost of products.

To stay competitive, paper manufacturers need to optimize the cost structure of their entire manufacturing process. In addition to improving the optical properties of the papers is reinforced by the printing industry efficiency and production through improved printability and

Running properties required in gravure printing and offset printing. The desire to achieve improved efficiencies in process manufacturing, as well as the attempt to maintain the previous printability and verdruckbarkeits properties of the papers has meant that more and more different sometimes very expensive materials such as talc are used in the production of the papers. Especially for the production of so-called lightweight, coated papers (so-called LWC and ULWC papers) for rotogravure talcum is used as pigment.

Talcum as a pigment reduces the coefficients of adhesion and sliding friction of the

coated paper and slows the discharge speed at electrostatic charge. In the paper industry, therefore, the detention and

Sliding friction coefficient included in the quality control. New

Investigations have shown, however, that the mechanism of action of talc to avoid Kernplatzern 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 ones

Properties of talc.

In addition, talc is used compared to conventionally used

Tiefdruckkaolinen much more expensive and has additional disadvantages of lower whiteness, very difficult dispersibility and an unfavorable theological

Behavior during processing 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.

Among other things, the use of 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 roll to be unwound are no longer present

printable, so that the residual role, the paper broke must be supplied. This results in significant economic losses. Also, the influence of moisture in the calendering is known, gloss and smoothness increase with higher humidity, whiteness and opacity, specific volume, capillarity, Be and Verdruckbarkeitsverhalten (core burst, Kreppfalten) deteriorate. The possibilities of increasing the gloss, in particular by changing the recipe and changing the initial moisture content, must be carefully considered before calendering, ie considered holistically in order to avoid detrimental effects. So it makes no sense in the production of LWC offset paper, the gloss increase on a line weight increase or by increasing the input moisture content implement, if you already blisterprobieme or Kreppfaltenprobleme has. High humidity causes high conductivity and low surface resistance, resulting in fast

Discharge operations and thus lead to Kreppfalten.

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 at high

Machine speeds can be processed.

The above object is achieved by a coating paint as claimed in claim 1. The method for producing this coating color according to claim 12 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.

In the context of the present invention, the term "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.

In addition, according to the present invention as the electrolytic constituents in particular salts such as sodium chloride, calcium chloride, ammonium salts, hardening constituents in the water, in particular

water-soluble polyelectrolytes such as natural and / or synthetic components for example carboxymethylcellulose (CMC), acrylic acid, methacrylic acid, fumaric acid, itanconic acid, combinations thereof and the like understood. 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.

According to a further, particularly preferred embodiment, 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.

In particular, according to the present invention, the second additive is selected from a group comprising, among others, low molecular weight polyethylene glycols straight or branched, low molecular weight polypropylene glycols straight or branched, mixtures of polyethylene glycol and polypropylene glycol, ethylene oxide / propylene oxide polyether, reaction products of polyethylene glycol and bisphenol A diglycid ethers, as well as polyfunctional polyfunctional alcohol-based glycidyl ether, micellar fatty acid dispersion (C12 to C21), for example stearic acid dispersions prepared using ammonia, organic armines or polymeric bases such as polydimethylethyl methacrylate as the neutralizing component, co-polymers from

Polyglykolmethacrylaten with acrylic acid or with methacrylic acid, N-vinylpyrrolidone, or N-vinyl lactam copolymers with Hydroxiethyl- or Polyglykolmethycrylaten, fatty acid amines, Aminopolyglykole, combinations thereof and the like.

According to a particularly preferred embodiment, the second additives have a molecular weight which is in particular less than 20,000 g / mol.

Preferably, 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 composition of the invention is further characterized according to a particularly preferred embodiment, characterized in that the limited mobility of the electrolytic components in particular by increasing the

Surface and / or the volume resistivity of the coating or the coated paper is achieved and / or the conductivity in the dried coating layer is reduced.

According to another particularly preferred embodiment, the

coating composition of the invention further constituents such as optical brighteners, dyes, theological aids, combinations thereof and

like that. 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 be bound by fixation and / or complexation at least temporarily.

In this case, the first and / or the second additive in particular non-ionic property, wherein according to another particularly preferred

Embodiment, the first and / or second additive weakly anionic or

may be weakly cationically equipped.

According to a further, particularly preferred, embodiment is the

Total amount of first and or second additives, which are added to the coating color with respect to the total pigment content between 0.05 and 2.5 parts, preferably between 0.1 and 1, 5 parts and more preferably between 0.15 and 1 part.

The coating composition according to the invention is prepared in accordance with a further particular preferred embodiment of the present invention in such a way that it can be used in particular for processing with application devices such as, for example, film presses, curtain coater, spray application,

Roller coater, blade coater, blade coater, speed coater,

Massey's method, flooded nip, combinations thereof and the like are known in the art.

According to a further particularly preferred embodiment of the present invention is between 1 part and 70 parts, preferably between 25 parts and 50 parts, particularly preferably up to 50 parts of the pigment calcium carbonate, in particular ground calcium carbonate (GCC = ground calcium carbonate, ground calcium carbonate) whose Grain size distribution at 60% to 75% <2 pm and in particular at about 70% <2 pm.

According to a further particularly preferred embodiment, 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 method for

Preparation of a coating color, which comprises at least the following steps: presentation of a pigment dispersion, which is presented both as a finished pigment dispersion or prepared as a corresponding pigment dispersion, that is a dispersion is preferably prepared from the pigment and water and optionally a dispersant in a corresponding container. In this submitted pigment dispersion according to the inventive method, 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. In addition, a second additive is added, which in particular is a polyfunctional alcohol and / or a low molecular weight polyether and / or a micellar

Fatty acid dispersion and is closer to the second additive. In addition to the addition of the first and second additives are in accordance with the

process according to the invention further components such as, for example, binders, CMC, synthetic thickeners, polyvinyl alcohols, starch, optical brighteners,

Calendering aids, combinations thereof and in the same added before the corresponding coating color is fully dispersed. According to a further, particularly preferred embodiment, 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. According to a further, particularly preferred, embodiment of the

According to the method of the invention, the proportion of the second additive increases with increasing molecular weight in relation to the proportion of the first additive.

According to a further preferred embodiment, 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 , In particular, 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, as a result of which the discharge rate during static charging is reduced. In particular, the use of the additives according to the invention results in improved printability and printability properties in both gravure and offset printing.

For example, when using the additives according to the invention in

Gravure papers improved gloss, higher opacity, low

Color bleed and appear as well as fewer missing halftone dots. Also the core placements occurring in the execution of broad roles in

Sleeve close, which almost inevitably occur in papers that do not contain talc, are avoided.

When using the additives according to the invention in coated offset papers a higher Ratserpunktschärfe is achieved in addition to higher gloss. The cleaning and washing intervals at the press can be significantly reduced. The occurrence of Kreppfalten on the slitter, which on sudden

Shifting due to low friction coefficients can be avoided by the use of additives. When using only low molecular weight polyethylene glycols in the coating color, however, massive printability problems were observed. These show in a fading of the ink (mainly cyan) after prolonged storage of the coated papers. Polyethylene glycol is a so-called linear one

Crown ethers. Linear crown ethers may adopt a cyclic conformation for the complexation of metal ions, as in FIG. so that e.g.

Alkali metal ions can be complexed in the resulting cavity. The high molecular weight polyethylene glycol acts as a so-called "podand"

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 there of the central atom of the phthalocyanine-based pigments. In particular, low molecular weight polyethylene glycols can also be used as a carrier for optical brighteners, as well as stabilizers and lubricants in coating colors.

Particularly noteworthy is also the strong increase of the "high shear"

Viscosity with all its adverse effects associated with ammonium stearate as an additive.

Table 7 illustrates combinations of the first with the second additive. For example, variations 1 and 2 have been used

high molecular weight polyether in combination with a low molecular weight polyether used. Thus, in Variation 1, 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 with a

Molar mass of 30,000 g / mol and the proportion of the second additive in relation to the total amount of polyether used from 0.5 to 5% at a molecular weight of

1000 g / mol up to 10 - 15% or 15 - 20% when using a second polyether with a molecular weight of 10,000 g / mol.

The invention will be explained with reference to individual embodiments, wherein expressly pointed out that this does not limit the invention, but the embodiments only serve to understand the present invention and that of course also modifications and adaptations as the skilled person would make in the sense of the present Invention lie. 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

carried out. 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. Of the

Recorder records the measured voltage over time. It revealed Curves with the illustrated in Fig. 2 principle 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. to

Characterization of the discharge, different time constants can be used, the definition of FIG. 2 can be seen. It should be noted that the magnitude of the determined discharge times only give an indication of the particular embodiment, i. Discharge times can not be shared with others

Embodiments are compared because of different measurement conditions.

Embodiment 1

Prevention of core spot locations when winding large rolls for LWC rotogravure papers by influencing the electrostatic charges. In these first investigations, it was to be determined to what extent selected additives influence the electrostatic discharge process. The base paper used was a wood-containing intaglio coating paper with a basis weight of 46 g / m ² . To prepare the coating color served a

High-performance dispersing. 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

set. The products used are described in detail in the company documents. 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. With hydrophobized kaolin, emulsified triethoxyalkysilane, zeolite, etc., 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. However, e.g. a combination of e.g. PEG and zeolite to support the reduction of conductivity conceivable.

The test results according to Table 1 show that the desired deceleration of the discharge time can best be achieved with high molecular weight PEG and micellar stearic acid dispersion and mixtures thereof. In contrast, a 4000 MW PEG has no effect on the discharge process. It has already been mentioned that low molecular weight PEG is used as an antistatic agent, i. contributes to the discharge acceleration. It is further apparent from the investigations that electrolytes e.g. NaCI also cause a strong discharge acceleration and that a pH reduction and consequent reduction of Na + ion concentration already has a positive effect on the discharge process.

Embodiment 2

Prevent core pitches when winding large rolls for LWC gravure without using talc. The aim of this series of experiments was to determine to what extent high-molecular-weight PEG, the talc used in practice, was used to avoid core sites with regard to the required

Surface resistance and the discharge time can replace. Finntalc C 10 (Mondo Minerals) was used as the coating talc and ammonium stearate by Schill and Seilacher. The base paper used was a 46 g / m ² wood-containing base paper. To prepare the coating colors and measurement of the theological properties, application by hand wringer and calendering and the discharge times, the methods mentioned in Example 1 were used. The coating order is 10 g / m ² . The measurements of the sliding friction coefficient were carried out in accordance with DIN 53 119-1. The surface and volume resistivity measurements were made using a Terra-Ohm meter from Eltex.

It can be seen from the investigations according to Table 2 that the parameters which are important for the avoidance of core placements, such as surface resistance and discharge times with PEG, are in the same range as in practice

used 15-30 parts talc. The sliding and static friction coefficient is not changed by PEG. In fact, a reduced coefficient of sliding friction tends to lead to core bursts.

Embodiment 3

Influence of certain additives on the quality properties and prevention of core bursts of LWC-TD papers. In this series of tests, besides the water retention, high shear viscosity and discharge time, especially the paper and print quality properties with the various additives in the

Investigation results are included. In addition, the following products were used or applied to the pigments and additives and methods mentioned in Example 1 and 2. Brazilian kaolin 90% <2pm (Imerys), ground calcium carbonate (GCC 70% <2μηι) marble-based (Omya) alkaline swellable thickener based on butyl acrylate-acrylic acid

Ethyl Acrylate Polymers (Alco Inc) High Viscosity Rotational viscometer on cylinder / cup basis with defined gap. The water retention is through

Applying a defined coating color sample measured on a metal electrode. Filter paper is placed on the coating color sample and thereupon a counterelectrode designed as a weight. Measured is the time in seconds, due to the impregnation of the filter paper with coating color serum a certain

Current flow is achieved. Generally, the longer the measured time, the higher the water retention of the coating color. A good water retention capacity of the coating color is a prerequisite for a perfect processing of coating colors, as too fast dewatering of the applied to the paper web

Coating color film on the dosing, the so-called doctor blade, leads to the formation of stripes. The test coating colors are adjusted to a h ^' containing 36 g / m ² Base paper on a test machine, applied at a speed of 20 / 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 ). However, in the presence of ammonium stearate, the high shear viscosity increases with both

high molecular weight PEG as well as Stearinmicellen (V 4 and V 5) strongly. However, significant advantages in smoothness, gloss and printability development are achieved compared to the standard formulations (V1 and V2).

In addition, slower discharge times compared to the standard (V2) without talcum result. From this example according to Table 3 it appears that with the additives used both the paper and

Improve printability characteristics (less missing halftone dots / cm ² ) and at the same time replace the talc without core pitting problems.

The recipe according to the experiments V6 and V7 also shows that even with relatively large amounts (up to 50 parts for intaglio printing) of a coarse calcium carbonate (GCC 70% <2μιη) processing results of the coated paper can be achieved, in which essentially no disadvantages in the

Printability occur. In addition, the use of the rough allowed

Calcium carbonate is a reduction of the binder content, for example, from about 4.5 to 5.0 parts to 3 to 3.5 parts.

Embodiment 4

Deceleration of unloading time to avoid crepe creases when wrapping offset coated papers. This series of experiments was intended to clarify whether the additives successfully used in gravure printing are also effective with regard to the discharge time, even with offset formulations with different binder contents. The pigments and binders used were a ground calcium carbonate (GCC) of Omya, kaolin (Imerys), SB-binder (BASF), PVA-4-98 (Kuraray), OBA (Clariant) used. The base paper used was a 46 g / m ² wood-containing base paper. To prepare the coating colors and measurement of the theological properties, application by hand wringer and calendering and the discharge times, the methods mentioned in Example 1 were used.

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.

Embodiment 5

Influence of various additives on the quality properties and formation of crepe creases of coated offset papers. These investigations should shed light on the influence of the described additives on the electrical and electrostatic property changes

Paper quality properties with respect to smoothness and gloss development. As raw paper and raw materials used 4 are described in the embodiment. The preparation of the coating color, application, calendering and electrical surface resistance and discharge time are shown in the embodiment 1 and 2. The paper test in the embodiment 3.

The 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 (high surface and volume resistance and slower discharge of the papers result in a smooth running behavior (in terms of

Kreppfalten) and a significant increase in gloss and smoothness as was also found in the TD papers. This results in the possibility of creating moderate calendering conditions with the advantages already mentioned. Embodiment 6

Use of low-cost raw materials in offset LWC without sacrificing quality through the use of high molecular weight PEGs. In this example, 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 μm, GCC 90% <2 μm (Omya), very fine kaolin 98% <2 μm (Imerys), coarse kaolin 70% <2 μm (AKW) and SB binder (BASF). The experiments were carried out under the same experimental conditions and their evaluation as in

Embodiment 3 performed.

In the present example according to Table 6, the finely divided kaolin is replaced by a much coarser kaolin. In addition to economic benefits, 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

Have binder requirement, binder can 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.

Claims

claims

1. coating color for the painting of a print carrier such as paper, paperboard and cardboard, which water, at least one pigment, at least one binder, electrolytic constituents and at least two additives, characterized in that the coating color as a first additive at least one high molecular weight polyether and as a second additive comprises at least one polyfunctional alcohol and / or a low molecular weight polyether and / or a micellar fatty acid dispersion, and wherein the first and second additive at least partially restricts the electrolytic constituents of the coating color in their motion in the aqueous phase of an electrical double layer of the pigment and leads to an extension of the discharge time in the dried coating layer.

2. coating color according to claim 1, characterized in that there is an increase in the surface and / or volume resistivity and / or a reduction in the conductivity in the dried coating layer.

3. coating color according to one of the above claims, characterized

characterized in that the coating color further constituents, such as optical brighteners, dyes and theological aids, combinations thereof and the like.

Coating paint according to any one of the preceding claims, characterized in that the pigment is selected from a group of materials containing minerals such as kaolins, talc, calcium carbonates,

Titanium dioxide, aluminum hydroxides, bentonites, barium sulfates, synthetic fillers or plastic particles, dyes, combinations thereof, and the like, and / or the binder is selected from the group consisting of

in particular natural binders such as starch, casein, soy proteins, cellulose ethers, vegetable proteins of other origin, synthetic

Binders in dispersion form and water-soluble form based on styrene-butadiene, styrene (meth) acrylate esters, vinyl acetate ethylene,

Vinyl acetate acrylate esters, vinyl acetate and polyvinyl alcohols,

Combinations thereof and the like, and / or the electrolytic constituents are selected from a group which in particular comprises ionogenic constituents such as salts, for example sodium chloride, calcium chloride, ammonium salts, hardening constituents in water, in particular water-soluble polyelectrolytes, such as natural and / or synthetic constituents, for example carboxymethylcellulose, Acrylic acid, methacrylic acid, fumaric acid, itanconic acid, combinations thereof and the like.

Coating paint according to one of the preceding claims, characterized in that the first additive is selected in particular from a group which high molecular weight polyethers such as high molecular weight

Polyethylene glycols straight or branched, high molecular weight Polypropylene glycols straight or branched, mixtures of

Polyethylene glycols with polypropylene glycols, ethylene oxide / propylene oxide polyethers, reaction product of polyethylene glycols with bisphenol A diglycidene ethers, ester and ether products, associative thickeners based on HEUR, crown ethers, cyclic ethers, combinations thereof and

the like, wherein in particular the first additive has 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 at approx 35,000 g / mol.

6. coating color according to one of the preceding claims, characterized

in that the second additive is selected, in particular, from a group which comprises straight-chain or branched low molecular weight polyethylene glycols,

low molecular weight polypropylene glycols straight-chain or branched, mixtures of polyethylene glycols with polypropylene glycols, ethylene oxide /

Propylene oxide polyethers, reaction product of polyethylene glycols with bisphenol A diglycidene ethers, as well as polyfunctional glycidyl ethers based on polyfunctional alcohols, micellar fatty acid dispersions (C12 to C21), for example stearic acid dispersions, which using ammonia, organic amines or polymeric bases, such as

Polydimethylethylmethacrylat be prepared as a neutralizing component, co-polymers of polyglycol methacrylates with acrylic acid or methacrylic acid, N-vinylpyrrolidone, or N-vinyl lactam copolymers with hydroxyethyl or Polyglykolmethycrylaten, fatty acid amines,

Aminopolyglykole, combinations thereof and the like, wherein in particular the second additive has a molecular weight which is less than 20,000 g / mol or preferably 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 smaller

20,000 g / mol and in particular about 4,000 g / mol or about 10,000 g / mol.

7. coating color according to one of the preceding claims, characterized

in that they are additives which limit the mobility of the electrolytic constituents of the coating color, preferably of the dried coating color, in particular by adsorption on the pigment and / or immobilization and / or fixation and / or complex formation.

8. coating color according to one of the preceding claims, characterized

in that the first and / or second additive is non-ionic or weakly anionic or weakly cationic.

9. coating color according to one of the preceding claims, characterized

in that between 0.05 and 2.5 parts of the first and / or second additive or additive mixture based on the total pigment content, preferably between 0.1 and 1.5 parts, more preferably between 0.15 and 1.0 parts are used ,

10. Brushing paint according to one of the preceding claims for processing with an applicator such as film press, curtain coater, spray application, roller coating, knife coating, blade coater, speed coater, Massey method, Flooded-Nip and the like.

11. coating color according to one of the preceding claims, characterized

marked that between one part and 70 parts, preferably between 25 parts and 50 parts, more preferably up to 50 parts of the pigment

Calcium carbonate, in particular ground calcium carbonate is used, whose particle size distribution is between 60% and 75% <2 μιη.

Use of a coating color according to at least one of the preceding claims for producing a print carrier, in particular for a print carrier, which is processed in offset, gravure, inkjet, flexographic, laser, screen, high-pressure, combinations thereof and the like.

13. A method of making a coating color comprising the steps of:

- Presentation of a pigment dispersion,

Addition of the first additive according to claim 5,

Addition of the second additive according to claim 6,

Addition of further components such as, for example, binders, CMC, synthetic thickeners, polyvinyl alcohol, starch, optical brighteners, calendering aids, combinations thereof and the like,

- dispersing the coating color.

14. A process for the preparation of the coating color according to claim 13, characterized in that in particular between the addition of the first and the second additive, an adjustment of the pH of the coating color formulation between 7.5 to 8.8, preferably between 8.5 and 8.7 he follows.

15. A method for producing the coating color according to any one of claims 13 or 14, characterized in that the pigment and / or the pigment dispersion is predispersed with at least one of the two additives.

16. A method for producing the coating color according to any one of claims 13 to 15, characterized in that the first and second additive is added as a mixture of the pigment and / or the pigment dispersion.

17. A method for producing the coating color according to one of claims 13 to 16, characterized in that the proportion of the second additive increases with increasing molecular weight in relation to the proportion of the first additive.

18. A method for producing a coating color according to at least one of claims 1 to with a method according to at least one of claims 12 to 17.