RU2316568C2 - Binding compound for the roll applied paste composition - Google Patents

Abstract

FIELD: building industry; binding compounds for production of the glues.

SUBSTANCE: the invention is pertaining to the binding compound used for production of the paste composition. The binding composition for production of the glues has at least 10 % of its mass composed of the polysaccharide, which has passed the surface treatment and present in the form of the particles or the mixture of two or more such polysaccharides having passed the surface treatment polysaccharides in the form of the particles and, at least of 3 mass % of the natural or synthetic laminated silicate in the form of the particles, either the mixture of two or more the natural laminated silicates or the mixture of two or more the synthetic laminated silicates in the form of their particles, or the mixture of one or several natural and one or several synthetic laminated silicates. The composition may also contain, at least, one water-soluble or the water dispergated synthetic polymer. The invention also presents description of the glue containing, at least, 20 mass % of the waters and, at least, 1 mass % of the composition.

EFFECT: the invention ensures production of the binding composition used for production of the paste composition and containing the natural or synthetic laminated silicates in the form of the particles, either the mixture of two or more the natural or synthetic laminated silicates, etc.

12 cl, 1 tbl, 5 ex

Description

The present invention relates to a composition comprising at least one particulate inhibited polysaccharide and at least one particulate natural or synthetic layered silicate.

Binder compositions containing a natural or synthetic polysaccharide and a synthetic polymer are generally known. Similar binder compositions are used for bonding, hardening or sealing. Specific examples of such uses are, for example, paste, dispersion adhesives, primers for mineral substrates, and the like. The aforementioned binder compositions known in the art, in particular their powdered formulations, are then used to produce the above products, especially when the preparation of the product is possible at the place of use by simple mixing with water, and especially when it can be performed by the consumer and is desirable for him. The use of such a binder in the preparation of adhesives is particularly preferred when the method of use of adhesives allows the use of adhesives prepared by the user.

The use of such binder compositions, as a rule, leads to savings in transport costs, since the weight of water is excluded. Such binder compositions are often used to surface coat bases with paper or other types of coatings. A particularly common use for such a binder is wallpaper paste used for decorative coating of walls or ceilings indoors.

The coating technique commonly used for this takes into account the often prevailing indoor substrates. When applying wallpaper to walls and ceilings, in particular absorbent substrates prevail, and the corresponding substrates, as a rule, absorb a certain amount of water. However, on the other hand, a lot of water is usually absorbed by the wallpaper itself. For this reason, the glue used for applying wallpaper is usually first applied to the wallpaper, and even after application, a certain “wet time” must be observed, during which the wallpaper is moistened by absorbing water. This coating method allows you to apply a sufficiently large amount of paste on the back of the wallpaper with a brush, as a result of which, after absorbing water, a sufficient high adhesive capacity is achieved.

Wallpaper paste usually should be capable of application using a paste brush. This requirement gives the adhesive structure of the wallpaper paste a generally disappearing character so that the wallpaper paste is sufficiently fluid for such a method of application. Since wallpaper coating with a paste is usually carried out with the horizontal position of the wallpaper on the wallpaper-pasting table, then, as a rule, there are no problems from the point of view of premature draining of the paste.

However, recently, wallpaper is often offered and used, consisting not only of paper, but also containing chemical fibers included in them. Such wallpapers have the advantage of dimensional stability. This means that such wallpaper can be applied to the wallpaper surface without a wet period. Although this method also allows the use of the wallpapering technology already described above, simpler options are acceptable. So, for example, for the consumer it would lead to significant time savings if it would be necessary to apply the paste not on the back side of the wallpaper, but it would be possible to apply the paste directly on the wall. In this case, one could first apply glue, essentially, to any arbitrarily large wall surfaces, and then one could fix the wallpaper in a simple way. With such an acceleration of the process, in addition, the inconvenience associated with coating the reverse side of the wallpaper, for example, the construction of a wallpaper-paste table and the cleaning of such tables from excessive amounts of paste, would be reduced.

However, for the described simplified method, it is problematic that the wallpaper paste known in the art does not meet the requirements of such a method. Due to the fluidity of the known pastes, they can be applied to vertical surfaces only in the form of relatively thin films, and the absorbency of the base, as a rule, leads to drying of the pastor too fast from the point of view of the above-described method. However, if the application of the paste should be in the form of a thicker film, then the known paste is largely prone to dripping onto an unnecessary surface. In addition, the wallpaper paste known in the art can usually be applied only by means of special paste brushes. The above method, which can be associated with covering large areas, however, can be carried out more economically in time and more efficiently by a knurling method, such as is commonly used when painting walls with foam or sheepskin rollers. However, currently known wallpaper paste, as a rule, also do not allow the use of such rollers for coating.

If, for the preparation of wallpaper paste, the corresponding binder compositions must be converted into a form suitable for use by the consumer himself, then, among other things, it is also necessary to fulfill a number of requirements regarding, on the one hand, the ability of the binder to manipulate it and, on the other hand, regarding the highest possible consistency of product quality, both from the point of view of the binder compositions themselves and from the point of view of products obtained from such binder compositions. Similar requirements apply, in particular, to the dissolution behavior of the binder compositions. Often, such a binder composition is prone to agglutination (clumping) when mixed in water, which requires an unacceptably long period of time to eliminate the lumps or the lumps do not dissolve at all. However, the use of products containing such lumps leads to disadvantages in relation to optical and technical defects. For example, if the wallpaper paste contains such lumps, when glued with smooth unstructured wallpaper this can lead to defects in the surface structure.

In addition, the ability to use the product obtained by the said binder as quickly as possible is required. In this case, particular importance is attached to the fastest possible solubility or dispersibility associated with the fastest possible increase in the viscosity of the product, and, despite the fastest possible increase in viscosity, the dissolution or dispersion of the binder should still occur without the formation of lumps.

Therefore, there is a need for binder compositions that allow large areas of coverage to be used in prefabricated formulations even on absorbent substrates. In addition, there is a need for binder compositions capable of ready-to-use compositions to be applied to substrates by conventional rollers in the form of large areas, the deposited films having a sufficient thickness. In addition, there is a need for binder compositions that, within the framework of using finished formulations, can be applied to the substrates by means of rollers, and such finished formulations have only a slight tendency to spray.

Therefore, the present invention is based on the task of obtaining a binder composition that does not have the above disadvantages. A particular object of the present invention is to provide compositions of binders that can be converted in situ by the consumer by means of water into compositions especially suitable as wallpaper paste and satisfying at least parts of the abovementioned needs.

Therefore, an object of the present invention is to provide a binder composition of at least 1 wt.% Inhibited particulate polysaccharide or a mixture of two or more such inhibited particulate polysaccharides and at least 3 wt.% Natural or a particulate synthetic layered silicate, or a mixture of two or more natural layered silicates or two or more particulate synthetic layered silicates, or a mixture of one or more natural and one or more synthetic layers istyh silicates.

By the term “polysaccharide” as used herein is meant polymeric compounds based on repeating sugar units. Natural polysaccharides within the scope of the present invention are, for example, cellulose or starch polysaccharides. A “polysaccharide” according to the invention can be, for example, a polysaccharide in its natural form. However, polysaccharides obtained synthetically or derivatives of natural and synthetic polysaccharides can also be used within the scope of the present invention. Particularly suitable in the framework of the present invention are, for example, water-soluble or water-dispersible starch ethers or cellulose ethers. If the term “starch ether” or “cellulose ether” is used in the following text, then this term is, in each case, a synonym for all natural polysaccharides that fall within the above definition, unless otherwise clearly stated.

The term “water soluble” as used herein encompasses those compounds that are soluble in water in a molecularly dispersed state or colloidal. The term "soluble" in the framework of a preferred embodiment of the invention means those compounds which have a solubility of at least more than 0.01 g in terms of 100 ml of water at 20 ° C. However, preferably, the solubility of the water-soluble compounds covered by the scope of the present description exceeds this value and is, for example, 0.1 g or 0.5 g or 1 g in terms of 100 ml of water at 20 ° C. However, the indicated values of the water solubility index should not be achieved immediately after the introduction of the corresponding substance into water. For example, it may be sufficient if appropriate indicators are achieved after a period of time of about 10 or about 20 minutes or more.

The term “water dispersible” as used herein, encompasses compounds that do not form a molecularly dispersed or colloidal solution in water, but are distributed in water as a dispersion phase.

According to a first embodiment of the invention, the binder compositions of the invention comprise, for example, water-soluble or water-dispersible inhibited starch and / or starch derivative, or inhibited cellulose derivatives, preferably cellulose ether.

If inhibited starch is used in the compositions of the invention, then water-soluble or water-swellable modified starch is used in the preferred embodiment of the present invention. Partially split starch or swollen starch are suitable, for example. If starch derivatives are used, then, for example, starch ether or ester, especially carboxylated or hydroxyalkylated starches, are suitable. As carboxylated or hydroxyalkylated starches, all suitably modified natural types of starch from potato, maize, wheat, rice, sweet, tapioca and the like are suitable, with derivatives of starch based on potato or maize starch being preferred. Suitable starch derivatives have, for example, a carboxylation degree of from about 0.1 to about 2.0 (DS) or an oxyalkylation degree of from 0.05 to 1.5 (MS). Derivatives of starch can also be crosslinked. Suitable crosslinking agents are, for example, bifunctional compounds, such as those known from European patent application EP-B0311873.

The following types are particularly suitable as ethers: carboxymethyl cellulose (CMC), carboxymethyl methyl cellulose (CMMC), ethyl cellulose (EC), hydroxyethyl cellulose (HEC), hydroxybutyl methyl cellulose (GBMC), hydroxybutyl cellulose (hydroxyethyl cellulose (HBLC), ), hydroxypropyl cellulose (HPC), hydroxypropyl carboxymethyl cellulose (HPMC), hydroxypropyl methyl cellulose (HPMC), hydroxyethyl cellulose (HEEC), hydroxyethyl methyl cellulose (HEMS), methyl hydroxyethyl cellulose (MG) C), methylcellulose (MC) and propylcellulose (PC), the preferred carboxymethylcellulose, methylcellulose, methylhydroxyethylcellulose or methylhydroxypropylcellulose, and alkali metal salts of carboxymethylcellulose, as well as, if appropriate, alkoxylated, especially ethoxylated, methylcellulose.

The term "inhibited" polysaccharide in the framework of the present invention means a polysaccharide subjected to surface treatment, especially surface crosslinking to control its solubility in water or in aqueous solutions. The "inhibited" polysaccharide used in the framework of the present invention, in comparison with the same polysaccharide in an uninhibited form, has a slower solubility, that is, a longer period of time elapses before such an inhibited polysaccharide is dissolved in water or in an aqueous solution than before the corresponding "uninhibited" polysaccharide is dissolved.

The inhibited cellulose ethers used according to the invention after such treatment have a delayed solubility. In the framework of the present description, this means that the cellulose ether derivatives obtained according to the described process in comparison with their natural form, that is, before using the described process, are dissolved in water only by a later time. This later time, if necessary, can be determined by the consumer of cellulose ether or prepared compositions containing such a cellulose ether, when it performs a certain action, for example, changes the pH value, however, it is also provided that the cellulose ether used according to the invention and without additional processing or external exposure, for example, mainly in a neutral environment, has a slow solubility.

The solubility of the inhibited polysaccharides used in the preparation of the present invention, for example, the inhibited cellulose ethers used, is typically at least about 0.5% by weight. parts per 100 mass. parts of water. However, mainly, the solubility is at least about 0.5 mass. parts for 30 mass. parts of water.

By starch or cellulose ethers are meant derivatives of starch or cellulose obtained by partial or complete substitution of hydrogen atoms in the hydroxyl groups of starch or cellulose with alkyl and / or (ar) alkyl groups. Alkyl and / or (ar) alkyl groups mainly contain additional nonionic, anionic or cationic groups. Moreover, as a rule, individual molecules are substituted differently, as a result of which their degree of substitution is an average indicator. In addition, the substitution may also include “new” hydroxyl groups formed during the reaction, which may be, for example, if an epoxide is involved in the reaction. Used in the framework of the present invention, water-soluble ethers of starch or cellulose contain at least one hydroxyl group.

The preparation of starch or cellulose ethers is generally carried out by exposure to (ar) alkyl halides, for example methyl chloride, ethyl chloride and / or benzyl chloride, 2-chloroethyl diethylamine or chloroacetic acid, and / or epoxides, for example, ethylene, propylene and / or butylene oxides , glycidyltrimethylammonium chloride and / or activated olefins, for example acrylonitrile, acrylamide, or vinylsulfonic acid on base activated, most often, aqueous sodium hydroxide solution, cellulose. Carboxymethyl cellulose, methyl cellulose, ethyl cellulose, hydroxyalkyl cellulose, especially hydroxyethyl cellulose or mixed esters such as methyl hydroxyethyl cellulose or hydroxypropyl cellulose, carboxymethyl hydroxyethyl cellulose and / or ethyl hydroxyethyl, are preferred in the context of the present invention.

To obtain partially crosslinked water-soluble starch or cellulose ethers, for example, a water-soluble cellulose ether is contacted with glyoxal and / or polyglyoxal.

For carrying out this reaction, preferably aqueous solutions of glyoxal or polyglyoxal are used. In a preferred embodiment of the invention, aqueous glyoxal solutions are used having a glyoxal concentration of from about 0.1 to about 60 wt.%, For example, from about 2 to about 50 wt.%. Especially suitable are, for example, glyoxal solutions having a glyoxal concentration of from about 20 to about 45 wt.%, Especially from about 30 to about 40 wt.%.

If aqueous polyglyoxal solutions are used to prepare the cellulose ether used according to the invention, they preferably have a polyglyoxal concentration of from about 70 to about 90% by weight. Preferably, a commercial (Highlink 80, manufactured by Tromsal) approximately 80% by weight form is used. In the framework of the present invention, glyoxal and polyglyoxal can be used together to obtain inhibited cellulose ether, namely, simultaneously or sequentially.

Glyoxal and / or polyglyoxal are typically used in an amount of from about 0.05 to about 8 wt.%, Based on the weight of the water-soluble cellulose ether, preferably from about 0.1 to about 5 wt.% And, particularly preferably , in an amount of from about 0.5 to about 3 wt.%. So polyglyoxal can be used, for example, in an amount of more than 1 wt.%, Especially in an amount of from about 1.3 to about 1.9, or from about 1.45 to about 1.75 wt.%, Based on the weight of the water-soluble simple cellulose ether.

The described methods for producing inhibited cellulose ethers can, for example, be carried out using only one single type of water-soluble cellulose ether. However, it is also within the scope of the present invention to use a mixture of two or more water-soluble cellulose ethers subjected to the described treatment.

In order to carry out the inhibition reaction, a water-soluble cellulose ether or a mixture of two or more of these cellulose ethers should preferably be in dry form, i.e. in a form with a moisture content of at most about 15 wt.%, Preferably at most about 10 wt.%.

Moreover, the cellulose ether intended for processing may have a moisture content of, for example, from about 5 to about 15 wt.% Or from about 6 to about 9 wt.%.

As part of the inhibition method, it is also possible to use wet, i.e. containing water, cellulose ethers, such as those obtained as a crude crude product in the process of producing a cellulose ether. The wet cellulose ether typically has a moisture content of from more than about 15 wt.% To about 70 wt.%, Preferably from about 20 to about 40 wt.%.

The cellulose ether intended for processing can be used, for example, in powder form. In this case, the cellulose ether can be, for example, in granular or powder form. If powdered cellulose ether is used, then, for example, about 60% of it, particularly preferably about 70%, and most preferably about 80%, have particle sizes of about less than 0.4 mm, preferably about less than 0.3 mm, and particularly preferably about less than 0.2 mm (defined in accordance with DIN 4188). However, cellulose ether with a particle size of less than 0.1 mm in diameter is preferred.

The contacting of the water-soluble polysaccharide or a mixture of two or more water-soluble polysaccharides with glyoxal or polyglyoxal or a mixture thereof can be carried out by any method. If wet cellulose ether or a mixture of two or more wet cellulose ethers is used, the addition of an aqueous glyoxal solution to the cellulose ether or to a mixture of two or more cellulose ethers may be carried out, for example, by spraying, dropping or any other suitable method. It is also possible to mix an aqueous solution of glyoxal or polyglyoxal or a mixture thereof and a water-soluble cellulose ether or a mixture of two or more water-soluble cellulose ethers in a mixing device, for example in an extruder. However, any other mixing device is also suitable, for example a rotary-jet mixing device.

In order to obtain inhibited polysaccharides suitable for use according to the invention, the inhibition reaction can be carried out at ambient temperature, that is, at a temperature of from about 10 ° C to about 30 ° C. However, it is also possible to carry out the inhibition reaction at a higher temperature, for example, at a temperature of from about 30 ° C to about 60 ° C. If necessary, the inhibition reaction can also be carried out at an even higher temperature, for example, at a temperature of from about 60 ° C to about 100 ° C or at the boiling point of the glyoxal or polyglyoxal solution used, if used.

After the inhibition reaction described herein, a polysaccharide or a mixture of two or more polysaccharides and glyoxal and / or polyglyoxal can be stored. Such storage can be carried out, for example, in a reservoir that has already been used for carrying out an inhibition reaction.

The mixtures processed as part of the inhibition reaction during storage can be further mixed, for example, when stored in a suitable mixing device, for example, in a heated mixer with a plow share or a heated rotary drum.

Storage is preferably carried out at a temperature of at least about 70 ° C. However, in another preferred embodiment of the present invention, a higher temperature is used in the storage process, for example at least about 75 ° C. or at least about 80 ° C. It was found that storage can be carried out even at an even higher temperature, for example, at 85 ° C, 90 ° C and 95 ° C or even at 100 ° C. The upper limit for safe storage temperatures is typically the boiling point of the amount of water or an aqueous solution of glyoxal and / or polyglyoxal in the mixture.

Used in the framework of the present invention as a component of the binder compositions of the invention, said polysaccharides are in particulate form in the binder compositions of the invention. The term "in the form of particles" means the actual predominant state of these polysaccharides within the composition of the binder in the form of particles. Moreover, within the framework of the present invention, it is possible for the polysaccharide particles characterized as being “in the form of particles” in the framework of the present invention to be in the form of an agglomerate of various particles (for example, primary particles) with particle sizes smaller than the particle sizes. The term “particulate”, as used in the following description, refers to particles inside the binder composition that can be measured by any particle size classification method, for example, sieve analysis, electron microscopy or light scattering, without additional grinding. It does not matter if the particles in the binder of the invention are in the form of an agglomerate of primary particles or whether the particles themselves are primary particles.

In a preferred embodiment of the present invention, in a binder composition of the invention, the polysaccharide particles have a particle size composition such that a maximum of 8 wt.% Of the particles, preferably, however, less than 8 wt.% Of the particles are larger than 200 microns. Preferably, from about 40 to about 95 wt.%, Especially from about 60 to about 90 wt.% Or 80 wt.% Or more of the specified particulate polysaccharide has a particle size of from 0.125 to 0.2 microns.

In the framework of the present invention, it is preferable to use the specified polysaccharide in the form of particles having a viscosity in the form of a 2 wt.% Solution in water from about 2000 to about 10,000 MPa · s, especially from about 4,000 to about 7,000 MPa · s or from about 5,000 to about 6000 MPa · s.

In another preferred embodiment of the present invention, the inhibited particulate polysaccharides or a mixture of two or more inhibited particulate polysaccharides have a dissolution pattern in water or in aqueous solutions in which at most after about 60 minutes, however, especially after 30 minutes or less, for example, than after about 20, 15 or 10 minutes, at least about 40% of the maximum viscosity is achieved, that is, the viscosity that is achieved, for example, in the corresponding solution after about 3 to about 10 hours aces. Preferably, the particles of said polysaccharide used according to the invention reach at least about 50%, preferably at least about 60% of the maximum viscosity after about 5 to about 10 minutes.

The binder compositions of the invention comprise an inhibited polysaccharide or a mixture of two or more inhibited polysaccharides in an amount of at least about 10% by weight. In a preferred embodiment of the present invention, the content of inhibited polysaccharides is from about 20 to about 80 wt.%, In particular from about 30 to about 80 wt.%, For example, from about 40 to about 70 wt.% Or from about 45 to about 60 wt.%.

The binder composition of the invention may contain the named polysaccharides or polysaccharide derivatives, as the case may be, as separate compounds. However, it is also possible, and within the scope of the present invention, that the binder composition of the present invention may contain a mixture of two or more of the above polysaccharide derivatives, for example 3, 4, 5, 6, 7, 8- mi, 9 or 10 or more different derivatives of polysaccharides. Moreover, according to the invention, it is provided that the binder composition should contain at least one inhibited polysaccharide. However, according to the invention, it is also possible that the binder composition contains one inhibited polysaccharide or a mixture of several inhibited polysaccharides together with one or more non-inhibited polysaccharides, such as the aforementioned non-inhibited polysaccharides.

As other components, the binder compositions of the invention contain at least 3 wt.% Of a natural or synthetic layered silicate in the form of particles or a mixture of two or more natural layered silicates or two or more synthetic layered silicates in the form of particles or a mixture of one or several natural or one or more synthetic layered silicates.

Suitable layered silicates are, for example, sepiolites, montmorrillonites, hectorites or smectites, with hectorite or smectite, and especially hectorite, are preferred.

Layered silicates that can be used as components of the binder compositions of the invention in the framework of the present invention can be of natural or synthetic origin. Within the framework of a preferred embodiment of the present invention, synthetic layered silicates, especially synthetic hectorite, are used as layered silicates. Suitable synthetic layered silicates are, for example, synthetic layered silicates under the code name Laponite from Solvay Alkali.

Within the framework of a preferred embodiment of the present invention, as a component of the binder compositions of the invention, such layered silicates are used that cause an increase in viscosity in water or in aqueous solvents. From the point of view of the time required to increase the viscosity, the increase in viscosity should be measured so that the ratio of viscosity to a certain point in time with the maximum viscosity for layered silicates and for the polysaccharide is in the range of ratios from about 10: 1 to about 1:10, in particular , from about 1: 5 to about 5: 1, or from about 1: 2 to about 2: 1.

In a preferred embodiment of the present invention, such layered silicates having an eine negative Ladung of at least 30 mmol per 100 grams, preferably from about 50 to about 80 mmol, are used as a component of the binder compositions of the invention per 100 grams and, for example, from about 50 to about 60 mmol per 100 grams.

The particle size of the layered silicates used in the framework of the present invention is preferably proportioned so that the time required to increase the viscosity, as described above, is within the above ratios to increase the viscosity of the polysaccharides. Advantageously, layered silicates are used in the framework of the present invention, the particle size of which is in the range from about 1 to about 500 microns, especially from about 20 to about 200 microns, for example, from about 30 to about 80 nm, or from about 40 to about 60 nm.

Concerning the particle sizes mentioned here, we are talking mainly about particles of a size that is achieved, for example, by grinding layered silicates to specific sizes. For example, after grinding, the particle sizes measured by the usual methods already mentioned above relate in this case to agglomerates consisting of separate also agglomerated primary or secondary particles. Preferably used according to the invention, layered silicates, as a rule, initially have the form of agglomerated staple particles (particles of short length). When layered silicate is added to water, the agglomerated particles first break up into separate but still agglomerated staple particles. When dispersed in water, agglomerated staple particles are first dissolved to separate staple particles. These staple particles swell in water for a certain time, and separate staple particles are divided into separate primary particles constituting staple particles. In another preferred embodiment of the present invention, layered silicates are used whose primary particles constituting the staple particles are less than 1 micron in size, especially less than 500 nm and preferably less than about 100 nm.

In a preferred embodiment of the present invention, hectorite is used as the layered silicate, for example a synthetic hectorite with the code name Laponite RD (supplier Solvay Alkali GmbH).

In a preferred embodiment of the present invention, the average particle size ratio of polysaccharides or layered minerals is from about 5: 1 to about 1: 5, for example, from about 3: 1 to about 1: 3, or from about 2: 1 to about 1: 2 .

The binder composition of the invention comprises a layered silicate, preferably in an amount of from about 3 to about 30 wt.%, Especially from about 3.5 to about 20 wt.% Or from about 4 to about 10 wt.%, For example, from about 5 to about 8 wt.%.

In addition to the compounds already described, that is, in addition to the partially crosslinked water-soluble cellulose ether or a mixture of two or more of these cellulose ethers and, optionally, a water-soluble or water-dispersible compound, the prepared water-soluble compositions of the invention may also contain a polymer. Such polymers can be added to the prepared water-soluble compositions, for example, in order to increase the adhesive ability. Suitable polymers are, for example, water-dispersible polymers such as vinyl pyrrolidone, polyacrylamide, polyvinyl alcohol or an ester or salts of polyacrylic acid or polymethacrylic acid or a mixture of two or more of these polymers. In a preferred embodiment of the present invention, polyacrylates or polymethacrylates, the so-called acrylic or methacrylic ester polymers containing from 1 to about 8 carbon atoms in the alcohol component, as well as vinyl polymers, especially polyvinyl acetate, are used as the polymer.

In addition, as the polymers can be used redispersible dispersed powder obtained by polymerization. This is, for example, about homo- or copolymers of vinyl ester, styrene, esters of acrylic or methacrylic acid or vinyl chloride. Suitable vinyl ester polymers are, for example, vinyl acetate homopolymers, vinyl acetate copolymers with ethylene or vinyl chloride or copolymers of other vinyl esters such as vinyl laurate, versatic acid vinyl ester, vinyl pivalate or maleic acid or fumaric acid esters, or homopolymers of saturated polymers or homopolymers alkyl carboxylic acids with 3-8 carbon atoms or their copolymers with ethylene, vinyl chloride or other vinyl esters, or copolymers from a mixture two or more of these monomers, or a mixture of two or more of these homo- or copolymers.

If compounds obtained from acrylic or methacrylic acid or styrene are used as a copolymer, then polymers which can be obtained by polymerizing styrene or esters of acrylic or methacrylic acid with straight chain or branched or cyclic aliphatic alcohols with 1-20 carbon atoms are mainly used. Styrene copolymers, for example styrene butadiene copolymers, are also suitable. Vinyl chloride polymers are also suitable, for example copolymers of vinyl chloride and ethylene.

Within the framework of a preferred embodiment of the present invention, vinyl acetate homopolymers, vinyl acetate copolymers and ethylene copolymers of saturated vinyl carboxylic acid esters of 3-8 carbon atoms in the alkyl part and ethylene with an ethylene content of from 1 to 40 wt.% And from 0 are used as polymers up to about 40 wt.% of another vinyl ester from the vinyl ester group of saturated alkyl carboxylic acids with 3-8 carbon atoms in the alkyl part or vinyl chloride, styrene-ester copolymers acrylic or methacrylic acid, such as copolymers of styrene and butyl acrylate or copolymers of styrene and ethylhexyl acrylate with a styrene content of from 1 to about 70 wt.%. Redispersible polymers of this kind are obtained, for example, by spray drying of polymer dispersions in a spray drying tower. In the framework of the present invention, it is provided that the above polymers are used in the prepared water-soluble compositions of the invention individually or in the form of mixtures of two or more of them.

Therefore, an object of the present invention are also prepared binder compositions containing, in addition to the aforementioned inhibited polysaccharides and layered silicate, at least one synthetic water-soluble or water-dispersible polymer.

The prepared binder compositions according to the invention, if necessary, may contain additives that cause alkalization of the glue obtained by dissolving the prepared water-soluble compositions according to the invention. These include, for example, ammonium hydroxide, alkali and / or alkaline earth metal hydroxide, water-soluble, mainly powdered alkali metal silicates (water glass), in particular sodium or potassium water glass, as well as ammonia and amines or basic and neutral salts, derived from strong and weak acids. These include, for example, alkaline salts of carbonic acid or carboxylic acids or tertiary phosphates. The named compounds can be used individually or as a mixture of two or more of them. If alkalization is to be carried out as part of the dissolution of the prepared water-soluble compositions of the invention, the amount of the above additives is generally from about 0.05 to about 3% by weight of the water-soluble base based on the total weight of the total prepared binder composition of the invention.

In another embodiment of the present invention, the prepared water-soluble composition comprises excipients. Suitable fillers are, for example, carbonates (especially calcium carbonate), silicates (e.g. talc, clay, mica), kieselguhr, sulfates such as calcium or barium sulfate, aluminum hydroxide, as well as cellulose fibers, fiberglass or glass beads. Such fillers may be contained in the water-soluble composition according to the invention, for example, in an amount up to about 20 wt.%, Preferably from about 0.1 to about 10 wt.% Of the total weight of the prepared water-soluble composition.

Such synthetic polymers provide, for example, an increase in adhesiveness or water resistance when using the target product obtained from a product containing a binder agglomerate according to the invention. In the framework of the present invention, redispersible dispersed powders of fully synthetic polymers (base polymers) are particularly suitable as synthetic polymers. This is mainly about homo- and copolymers of vinyl esters, styrene, acrylic acid esters and vinyl chloride.

Suitable vinyl ester polymers as a base polymer are, for example, vinyl acetate homopolymers, copolymers of vinyl acetate with ethylene and / or vinyl chloride and / or with other vinyl esters such as vinyl laurate, vinyl esters of versatic acid, vinyl pivalate or maleic acid esters or acids, or copolymers of two or more of these monomers or homopolymers of vinyl esters of saturated alkylcarboxylic acids with 3-8 carbon atoms in the alkyl part or their copolymers IMER with ethylene, vinyl chloride or other vinyl esters.

The above polymers of acrylic or methacrylic acid esters or styrene polymers are prepared by polymerizing styrene or acrylic or methacrylic acid esters. As an ester of acrylic or methacrylic acid, predominantly ether is used with straight chain or branched or cyclic aliphatic alcohols with 1-20 carbon atoms. Other styrene polymers can be, for example, copolymers of styrene with one or more other monomers. Suitable are, for example, copolymers of styrene and butadiene. Suitable vinyl chloride polymers are copolymers of vinyl chloride and ethylene.

As the dispersion powder in the framework of the present invention, preferably, vinyl acetate homopolymers, vinyl acetate-ethylene copolymers or vinyl ester copolymers of saturated alkyl carboxylic acids and ethylene are used with a content of from 1 to about 40 wt.% Ethylene and from 0 to about 40 wt.% Others vinyl esters from the group of esters of saturated alkylcarboxylic acids with 3-8 carbon atoms in the alkyl part or vinyl chloride, or mixtures of two or more of them, styrene acrylates, such as styrene butyl acrylate or styrene ethyl hexyl acrylate with a styrene content of from 1 to about 70 wt.%. These redispersible polymers are prepared as usual by spray drying the polymer dispersions in a spray drying tower.

Especially suitable are, for example, homopolymers or copolymers of vinyl esters, for example, copolymers with ethylene, the monomer units of the main structure of which are vinyl esters of straight-chain or branched carboxylic acids containing from about 2 to about 44 carbon atoms, for example, from about 3 to about 15 carbon atoms. Suitable monomers for these homopolymers or copolymers of polyvinyl esters are vinyl formate, vinyl acetate, vinyl propionate, vinyl isobutyrate, vinyl pivalate, vinyl 2-ethylhexanoate, vinyl ester of saturated branched monocarboxylic acids with from 9 to about 15 carbon atoms in the acidic residue long chain saturated or unsaturated fatty acids such as vinyl laurate, vinyl stearate or vinyl ester of benzoic acid and substituted benzoic acid derivatives such as to vinyl p-tert-butyl benzoate. The aforementioned vinyl esters may be present in the polymers of the vinyl esters, as the case may be, as individual compounds or as mixtures of two or more of these esters.

It may be advisable if, in the framework of the present invention, the binder agglomerates of the invention contain two or more of these synthetic polymers.

In another preferred embodiment of the present invention, homopolymer and copolymer mixtures are used as polymer particles. The homopolymers already described above are homopolymers, however, homopolymers of vinyl esters, preferably polyvinyl acetate, are particularly suitable. The copolymers mentioned above are also suitable as copolymers. However, as part of a preferred embodiment of the invention, the above-mentioned particle mixtures of two or more polymers use copolymers of ethylene and vinyl acetate, vinyl acetate and vinyl versatate or terpolymers, in particular terpolymers of ethylene, vinyl acetate and acrylate.

The content of homopolymers in such polymer particle mixtures is preferably at least about 20 wt.%, However, preferably 40 wt.% Or more, for example at least about 50 wt.%. A preferred ratio of homopolymers to copolymers in the mixture is, for example, about 75:25 or about 80:20.

In addition to these components, namely, at least one natural or synthetic polysaccharide and at least one synthetic polymer, the binder agglomerates of the invention may also contain other additives.

Suitable additives are, for example, compounds that cause alkalization of the adhesive obtained by dissolving the prepared water-soluble compositions of the invention. These include, for example, ammonium hydroxide, alkali and / or alkaline earth metal hydroxide, water-soluble, preferably powdered alkali metal silicates (water glass), especially sodium or potassium water glass, as well as ammonia and amines or basic and neutral salts obtained from strong and weak acids. These include, for example, alkaline salts of carbonic acid or carboxylic acids, as well as tertiary phosphates. The named compounds can be used individually or in the form of mixtures of two or more of them.

If alkalization is to be carried out as part of the dissolution of the prepared water-soluble compositions according to the invention, the content of the above additives is, in general, from about 0.1 to about 2 wt.% Of the total weight of the prepared water-soluble composition.

In addition, excipients are suitable excipients or fillers, wetting agents and preservatives, consistency regulators and additives with an adhesive ability, such as dextrins or ionic cellulose ether.

In another preferred embodiment of the present invention, the prepared water-soluble composition contains excipients or excipients. Suitable excipients or fillers are, for example, carbonates (especially calcium carbonate), silicates (e.g. talc, clay, mica), kieselguhr, sulfates such as calcium or barium sulfate, aluminum hydroxide, as well as fiberglass or glass beads. Such excipients or fillers may be contained in the prepared water-soluble composition according to the invention, for example, in an amount up to about 30 wt.%, Preferably from about 0.1 to about 20 wt.% Of the total weight of the prepared water-soluble composition.

In addition, the binder composition of the invention may also contain additives. Suitable additives are especially water-soluble ionic or non-ionic polymers from the group of polyvinylpyrrolidones, copolymers of vinyl pyrrolidone and vinyl esters, water-soluble amphoteric polymers from the group of copolymers of acrylamide and acrylic acid, copolymers of acrylamide and methacrylic acid, copolymers of acrylamide, methacrylic acid, copolymers of methyl acrylamide, copolymers of methyl acrylamide acids and alkylaminoalkyl (meth) acrylic acid, copolymers of alkylacrylamide, methacrylic acid and alkylaminoalkyl (meth) a acid, copolymers of alkyl acrylamide, methyl methacrylic acid and alkylaminoalkyl (meth) acrylic acid, copolymers of alkyl acrylamide, alkyl methacrylate, alkylaminoethyl methacrylate and alkyl methacrylate, copolymers of saturated carboxylic acids, derivatives of unsaturated carboxylic acids containing a cation, optionally or otherwise, amphoteric polymers from the group of copolymers of acrylamidoalkyltrialkylammonium chloride and acrylic acid, as well as their alkaline and ammonium ole, copolymers of acrylamidoalkyltrialkylammonium chloride and methacrylic acid, as well as their alkaline and ammonium salts, methacryletyl betaine and methacrylate, water-soluble anionic polymers from the group of copolymers of vinyl acetate and crotonic acid, copolymers of vinylpyrrolidone, vinyl acrylate-ethylaminoethylate-ethylamino acrylate copolymers of terimols vinyl esters, esters of acrylic or methacrylic acid individually or in a mixture copolymerized with crotonic acid, acrylic acid lot or methacrylic acid, with polyalkylene oxides and / or polyalkylene glycols, grafted or crosslinked copolymers obtained by copolymerization of at least one nonionic type monomer, at least one ionic type monomer, polyethylene glycol and a crosslinking agent, copolymers obtained by copolymerization of at least at least one monomer from any of the following three groups: ester of unsaturated alcohols and short chain saturated carboxylic acids and / or ester of short chain saturated alcohols and unsaturated carb acids, unsaturated carboxylic acids, ester of long chain carboxylic acids and unsaturated alcohol and / or ester of carboxylic acids of a group with saturated or unsaturated straight chain or branched alcohols with 8-18 carbon atoms, terpolymers of crotonic acid, vinyl acetate and allyl or metal ether, tetra- and pentapolymers of crotonic acid or allyloxyacetic acid, vinyl acetate or vinyl propionate, branched allyl or metal ethers, vinyl ethers, cl vinyl vinyl esters, or straight chain allyl or metal ethers, copolymers of crotonic acid with one or more monomers from the group of ethylene, vinylbenzene, vinyl methyl ether, acrylamide and their water-soluble salts, terpolymers of vinyl acetate, crotonic acid and saturated vinyl arylate vinyl esters, in the α-, β- and γ-position, soluble cationic polymers from the group of quaternized cellulose derivatives, polysiloxanes with quaternary groups, guar derivatives, polymers of dimethyldiallylammonium salts and their copolymers with esters and amides of acrylic and methacrylic acid, copolymers of vinyl pyrrolidone and quaternary derivatives of dialkylamino acrylates and dialkylaminomethacrylates, copolymers of vinyl pyrrolidone and polyiminoimide polyimides , Polyquaternium 18 and Polyquaternium 27.

Water soluble half measures, such as those obtained by graft copolymerization, are also suitable as additives. Suitable grafting bases are, for example, polyalkylene glycols, especially polyethylene glycol with a molecular weight of from about 100 to about 50,000, especially from about 1000 to about 10,000. Essentially all suitable grafting onto polyalkylene glycols compounds with at least one olefinically unsaturated double bond. However, to obtain grafted copolymers, preferably, vinyl ester with straight chain or branched saturated monocarboxylic acids with 2-24 carbon atoms, especially containing from 2 to about 18 carbon atoms, is used. Esters of this kind are already described above in the framework of the present description. For example, grafted copolymers with a grafting base content of about 10 to about 90 wt.% And grafting polymer of about 90 to about 10 wt.% Can be used. The ratio of the grafting base to the grafted polymer is advantageously chosen such that the grafted copolymers are water soluble, with a water solubility at 20 ° C. of about 1 g / l, however, it should preferably be, for example, more than about 2.5 or 10 g / l

As an additive, for example, a grafted copolymer containing about 40 wt.% Polyethylene glycol (PEG) with a weight average molecular weight (M _w ) of about 6000 and as a grafting polymer of about 60 wt.% Polyvinyl acetate can be used.

These additives may be contained in the binder compositions of the invention in an amount of from about 0.1 to about 10 wt.%, For example, from about 1 to about 7 wt.%.

In another embodiment of the present invention, the binder composition of the invention may comprise at least one quaternary ammonium compound. By the term “quaternary ammonium compound” as used herein is meant a nitrogen compound containing at least one nitrogen atom bound to three or four organic residues. As an organic residue with a particular arrangement, those residues that are obtained from the bonding of the corresponding nitrogen atom into a cyclic structure are also considered within the framework of the present invention.

In a preferred embodiment of the present invention, compounds with one or two nitrogen atoms are used as a quaternary ammonium compound, wherein at least one nitrogen atom has the property described above. In another preferred embodiment of the present invention, quaternary ammonium compounds containing only one nitrogen atom are used. In principle, within the framework of the present invention, quaternary ammonium compounds with any organic residues at the nitrogen atom can be used. However, in a preferred embodiment of the present invention, quaternary ammonium compounds are used containing four organic residues from a nitrogen atom selected from the group consisting of straight-chain or branched saturated or unsaturated alkyl radicals with 1-4 carbon atoms or unsaturated cycloalkyl radicals with 4-24 carbon atoms or aryl residues with 6-24 carbon atoms. The named residues, if necessary, may have, independently of one another, one or more substituents.

In another preferred embodiment of the present invention, quaternary ammonium compounds are used in which the organic moieties attached to the nitrogen atom have a different number of carbon atoms. Thus, it is possible, for example, to use quaternary ammonium compounds in which two types of different organic residues are attached to the nitrogen atom, and, for example, two or three of the organic residues present at the nitrogen atom, can be identical, as the case may be. In addition, it is also possible to use quaternary ammonium compounds in which three or four different organic residues are attached to the nitrogen atom.

In another preferred embodiment of the present invention, compounds containing three or more, especially ten or more quaternary nitrogen atoms, are used as quaternary ammonium compounds. Examples of such compounds are polymers prepared by quaternized amino groups. Suitable polymers are, for example, polyacrylates or polymethacrylates with dialkylamino groups protonated or quaternized with the corresponding quaternization agents. Suitable polymers containing nitrogen atoms in a cyclic structural element, for example polyvinylpyrrolidone, are also suitable.

Suitable quaternary ammonium compounds may contain one or more counterions. Suitable counterions are, for example, halide ions such as fluoride, chloride, bromide or iodide. Carboxylates, sulfates or phosphates are also suitable as counterions.

In another preferred embodiment of the present invention, for example, N, N-N-didecyl-N, N-dimethylammonium chloride, N, N-didecyl-N, N-dimethylammonium propionate, N, N-didecylmethyloxyethylammonium chloride are used as quaternary ammonium compounds. , N, N-didecylmethyloxyethylammonium propionate, cetyltrimethylammonium chloride, distearyldimethylammonium chloride, lauryl dimethyl benzyl ammonium chloride, lauryl trimethyl ammonium chloride or hydroxyethyl alkyl ammonium phosphates. Also suitable are, for example, compounds such as dioctyl dimethyl ammonium chloride, didecylmethyl poly (hydroxyethyl) ammonium propionate, benzyl alkonium chlorides such as benzethonium chlorides, alkylaminoalkyl glycinylalkylamines, polyhexamethylene biguanide hydrochloridinyl chloride or

In another embodiment of the present invention, additives containing at least one acidic and one basic group are also used as additives in the binder compositions of the invention. Compounds containing at least one acidic and one basic group are often called zwitterionic (amphoteric) compounds. Of the zwitterionic compounds, for example betaines are suitable.

Betaines are known compounds, mainly obtained by carboxyalkylation, preferably carboxymethylation of amino compounds. The starting compounds are preferably condensed with halocarboxylic acids or their salts, especially sodium chloroacetate, with one mole of salt being formed per mole of betaine. In addition, it is also possible to attach saturated carboxylic acids, for example, such as acrylic acid. Reviews on this topic are given, for example, by A. O'Lennick et al. in HAPPI, Nov. 70 (1986); S. Hoizman et al. Tens. Del, 23, 309 (1986); R. Bibo et al. Soap Cosm. Chem. Spec. Apr. 46 (1990) and P. Ellis et al. Euro Cosm. 1, 14 (1994).

Examples of suitable betaines are the carboxylation products of secondary and, especially, tertiary amines, corresponding to formula (I):

,

,

in which R ¹ means an alkyl and / or alkenyl residue with 6-22 carbon atoms, R ² means hydrogen or an alkyl residue with 1-4 carbon atoms, R ³ means an alkyl residue with 1-4 carbon atoms, n means a number from 1 to 6 and X mean alkali and / or alkaline earth metal or ammonium.

Typical examples are, for example, carboxymethylation products geksilmetilamina, geksildimetilamina, oktildimetilamina, detsildimetilamina, dodetsilmetilamina, dodecyl dimethylamine, dodetsiletilamina, kokoalkildimetilamina with 12-14 carbon atoms, miristildimetilamina, tsetildimetilamina, stearildi-methylamine steariletilmetilamina, oleildimetilamina, C _16/18 -tallovyyalkil-dimethylamine , as well as their technical mixtures.

In addition, the following carboxy-alkylation products of amido amines corresponding to the formula (II) are suitable as betaines:

,

,

in which R ⁴ CO means an aliphatic acyl residue with 6-22 carbon atoms, not containing or containing from 1 to 3 double bonds, m means a number from 1 to 3 and R ² , R ³ , n and X have the above meanings.

Typical examples are condensed with sodium chloroacetate reaction products of fatty acids with 6-22 carbon atoms, namely caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petrozelinic acid, linoleic acid, linolenic acid, eleostearic acid, arachinic acid, gadoleic acid, behenic acid and erucic acid you as well as mixtures thereof with N, N-dimethylaminoethylamino, N, N-dimethylaminopropylamine, N, N-diethylaminoethylamine and N, N-diethylaminopropylamine. It is preferable to use condensation products of N, N-dimethylaminopropylamine of coconut fatty acids with 8-18 carbon atoms with sodium chloroacetate.

In addition, imidazolines corresponding to formula (III) are considered as suitable starting materials for the betaines used according to the invention:

,

,

in which R ⁵ means an alkyl residue with 5-21 carbon atoms, R ⁶ means a hydroxyl group, the residue OCOR ⁵ or NHCOR ⁵ and m means 2 or 3. These substances also refer to known substances that can be obtained, for example, cyclized condensation of 1 or 2 moles of a fatty acid with polyhydric amines, such as, for example, aminoethylethanolamine (AEAA) or diethyltriamine. Suitable carboxylation products are mixtures of various short-chain betaines.

Typical examples of the condensation products of the aforementioned fatty acids with aminoethylethanolamine (AEA) are preferably imidazolines based on lauric acid or again coconut fatty acids with 12-14 carbon atoms, then betainized with sodium chloroacetate.

The binder compositions of the invention may contain zwitterionic compounds, as the case may be, individually, that is, only one zwitterionic compound, or in a mixture of two or more zwitterionic compounds.

The binder compositions of the invention contain quaternary ammonium compounds or zwitterionic compounds or a mixture of two or more of them in an amount of more than 4 wt.%. Moreover, the upper limit of the content of Quaternary ammonium or zwitterionic compounds or a mixture of two or more of them is about 40 wt.%. In a preferred embodiment of the present invention, the binder composition of the invention comprises at least 5, 6, 7, 8, 9, or at least about 10 wt.% Quaternary ammonium compounds or zwitterionic compounds, or a mixture of two or more of them . A suitable content is, for example, a value of the order of from about 8% to about 30%, for example, from about 9% to about 25% or about 15%, or to less than about 20%. The above percentages refer to the mass of quaternary ammonium compounds or zwitterionic compounds or a mixture of two or more of them.

In principle, the binder compositions of the invention may contain the above compounds, as the case may be, individually or in a mixture of two or more kinds of compounds. However, it is also contemplated within the scope of the present invention that the binder compositions of the invention comprise a mixture of two or more different compounds of various kinds.

As other additives, the binder composition of the invention may contain, for example, biocides, dyes, pigments, dispersants, wetting agents and / or surfactants, glycols or viscosity regulators.

Suitable biocides are, for example, quaternary ammonium compounds, aldehydes, preferably formaldehyde, isothiazolones or benzisothiazolones, or mixtures of two or more of them.

Suitable colorants and pigments are, for example, chalk, rutile, carbon black and similar inorganic colorants and pigments, as well as organic colorants and pigments, such as azo dyes or aniline dyes.

Suitable dispersing agents or wetting agents and / or surfactants are anionic, cationic or nonionic surfactants.

Typical examples of anionic surfactants are alkylbenzenesulfonates, alkanesulfonates, olefinsulfonates, alkyl ether sulfonates, glycerol ether sulfonates, methyl ether sulfonates, fatty sulfonic acids, alkyl sulfates, glyceryl ether sulfates, fatty ether ether sulfates ) ether sulfates, amide (ether) fatty acid ether sulfates, mono- and dialkyl sulfosuccinamates, sulfotriglycerides, amidomyl, carbonic ethers acids and salts thereof, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurides, acyl lactylates alkiloligoglyukozidsulfaty, protein fatty acid condensates (in particular vegetable products based on soya) and alkyl (ether) phosphates. Since anionic surfactants contain polyglycol ether chains, they can have the usual, however, mostly narrow homological distribution.

In addition, non-ionic surfactants not synthesized based on cellulose are also suitable within the scope of the present invention.

Typical examples of such nonionic surfactants are polyglycol esters of fatty alcohols, polyglycol ether of alkyl phenols, polyglycol ether of fatty acids, polyglycol ether of amides of fatty acids, polyglycol ether of fatty amines, hydroxyalkylated triglycerides, alk (en) fatty acid glycosides, N proteins (especially soy-based plant products), polyol fatty acid esters, sugar esters, sorbitan esters and polysorbates. Since nonionic surfactants contain polyglycol ether chains, they can have the usual, however, preferably narrow homologous distribution. The agent according to the invention preferably contains non-ionic surfactants as an additional component, such as, for example, products of addition of, on average, from 15 to 30 moles of ethylene oxide to a fatty alcohol containing from 8 to 18 carbon atoms.

In a preferred embodiment of the present invention, a non-ionic, low foaming surfactant is used as a component of the polysaccharide suspension of the invention, especially a mixed ethylene oxide / propylene oxide ether containing about 5 units of ethylene oxide and 5 units of propylene oxide.

Suitable glycols within the scope of the present invention are, in particular, low molecular weight glycols or oligoglycol ethers such as ethylene glycol, propylene glycol, butylene glycol, diethylene glycol, dipropylene glycol and the like.

Suitable viscosity regulators in the context of the present invention are, in particular, xanthan gum or silicic acid, or mixtures of two or more of them.

The binder composition of the invention contains, for example, the following components:

- from about 20 to about 80 wt.% inhibited cellulose ether,

- from about 0.2 to about 80 wt.% sodium carbonate,

- from about 10 to about 50 wt.% homopolymers of polyvinyl acetate,

- from about 2 to about 8 wt.% chalk,

- from about 4 to about 15 wt.% layered silicate, especially Laponite RD,

- from about 0.2 to about 2 wt.% Quaternary ammonium compounds.

The binder compositions of the invention can be converted into a ready-to-use aqueous adhesive composition by mixing the consumer in place with water or aqueous solvents.

The object of the present invention is, in addition, also the composition of the adhesive containing at least 20 wt.% Water and at least 1 wt.%, For example, from about 2 to about 20 wt.% Or from about 5 to about 10 wt.% the binder composition of the invention. In a preferred embodiment of the present invention, the composition of the adhesive according to the invention contains at least about 30 wt.%, However, especially at least about 40 wt.% Or at least about 70 wt.%, Or, at least about 80 wt.%, or at least about 90 wt.% water.

The adhesive composition of the invention is prepared, for example, by introducing the binder composition of the invention in water in a mass ratio of from about 1:10 to about 1:25, for example, from about 1:15 to about 1:22, especially about 1:20 (mass ratio).

The composition of the adhesive according to the invention after a period of time from about 1 to about 5 minutes after its preparation has, mainly, Brookfield viscosity (relative viscosity RVT, 20 ° C) from about 1000 to about 3000 MPa · s. In another preferred embodiment of the present invention, the composition of the adhesive according to the invention after about 20 to about 40 minutes, especially after about 25 to about 35 minutes after its preparation, has mainly Brookfield viscosity (relative viscosity RVT, 20 ° C) from about 10,000 to about 20,000 mPa · s, especially from about 11,000 to about 16,000 mPa · s.

The pH of the composition of the adhesive according to the invention in the framework of the present invention is at least about 6. In a preferred embodiment of the present invention, the pH of the composition of the adhesive according to the invention is at least about 7, for example, from about 7.1 to about 10, especially from about 8 to about 9.

The preparation of the adhesive compositions according to the invention is carried out by the consumer in place by simply mixing the above-described water binder compositions. Stirring itself can be carried out essentially by any known method. Thus, for example, simple devices, such as a vessel and spatula, are suitable for mixing, first pouring water and introducing the binder composition of the invention into the water with stirring. However, it is also contemplated within the scope of the present invention to prepare the paste composition of the invention using, for example, forced-drive mixing devices.

In more detail, the invention is illustrated by the following examples.

Examples

The following formulations were prepared as examples:

Recipe 1:

54.0 wt.% EUMM 6000 PR

30.0 wt.% Dispersed polyvinyl acetate powder

7.0 wt.% Cellulose fibers

6.0 wt.% Laponite RD

0.5 wt.% Soda

0.2 wt.% Dimethyldidodecylammonium chloride

2.3 wt.% Crystalline chalk

Recipe 2:

54.0 wt.% EUMM 6000 PR

30.0 wt.% Dispersed polyvinyl acetate powder

7.0 wt.% Cellulose fibers

6.0 wt.% Bentonite (Bentone EW)

0.5 wt.% Soda

0.2 wt.% Dimethyldidodecylammonium chloride

2.3 wt.% Crystalline chalk

Recipe 3:

54.0 wt.% EUMM 6000 PR

30.0 wt.% Dispersed polyvinyl acetate powder

7.0 wt.% Cellulose fibers

6.0 wt.% Smectit (Tixogel CD)

0.5 wt.% Soda

0.2 wt.% Dimethyldidodecylammonium chloride

2.3 wt.% Crystalline chalk

Recipe 4:

54.0 wt.% EUMM 6000 PR

30.0 wt.% Dispersed polyvinyl acetate powder

7.0 wt.% Cellulose fibers

0.5 wt.% Soda

0.2 wt.% Dimethyldidodecylammonium chloride

8.3 wt.% Crystalline chalk

Recipe 5:

Conventional commercial Metylan Spezial adhesive.

Compositions according to the above formulations were mixed with water in a ratio of 1: 2 (mass ratio). After 15 minutes, the resulting paste composition was applied to a new layer of plaster using a conventional commercial sheepskin roll. The tendency to spray and the applied amount of paste was evaluated visually. The results are shown in the table.

Recipe Spray tendency Glue quantity one ++++ ++++ 2 ++ ++ 3 ++ ++ four ++ ++ 5 + +

Moreover, it means:

++++ very little spray / dense coating, large amount of coating applied;

+++ individual sprays / good coverage, acceptable amount of coating applied;

++ moderately large amount of spray / mediocre coverage;

+ a lot of spray / poor coverage, a small amount of coating.

Claims (12)

1. A binder composition for adhesives, at least containing at least 10 wt.% Undergone a surface-treated polysaccharide in the form of particles or a mixture of two or more such surface-treated polysaccharides in the form of particles and at least 3 wt. % natural or synthetic layered silicate in the form of particles, or a mixture of two or more natural layered silicates or a mixture of two or more synthetic layered silicates in the form of particles, or a mixture of one or more natural and one or more synthetic layered silicates. 2. The composition according to claim 1, characterized in that as a polysaccharide that has undergone surface treatment, it contains at least one cellulose ether. 3. The composition according to claim 1 or 2, characterized in that it further comprises at least one water-soluble or water-dispersible synthetic polymer. 4. The composition according to claim 1, characterized in that as the layered silicate it contains a layered silicate type hectorite. 5. The composition according to claim 1, characterized in that the layered silicate is a synthetic layered silicate. 6. The composition according to claim 1, characterized in that the mass ratio of the specified polysaccharide or these polysaccharides to the layered silicate or layered silicates is from 1: 4 to 4: 1. 7. The composition according to claim 2, characterized in that 8 wt.% Or less surface treatment of the polysaccharide in the form of particles has a particle size of more than 200 microns. 8. The composition according to claim 7, characterized in that 80 wt.% Or more surface treatment of the polysaccharide in the form of particles has a particle size of from 0.125 to 0.2 microns. 9. The composition according to claim 6, characterized in that the ratio of the particle size of the surface treatment of the polysaccharide to the particle size of the layered silicate is from 10: 1 to 1:10. 10. The composition according to claim 1, characterized in that it contains from 0.05 to 3 wt.% A water-soluble base. 11. The composition of the adhesive containing at least 20 wt.% Water and at least 1 wt.% Of the composition according to claim 1. 12. The composition of the adhesive according to claim 11, characterized in that it contains at least 40 wt.% Water.