WO2010057888A1 - Fibrous dry mortar composition - Google Patents

Abstract

The invention relates to dry mortar compositions comprising a) one or more hydraulic binders, b) one or more fillers, c) optionally other additives, characterized in that d) fibers and e) one or more polymer powders which can be re-dispersed in water, said powders based on polymers of ethylenically unsaturated monomers and having a glass transition temperature Tg of -25°C to +25°C, are included.

Description

 Fibrous dry mortar composition

The invention relates to a fiber-containing dry mortar composition for the construction of reinforcement fabric-free thermal insulation composite systems using such compositions.

To build up a thermal insulation composite system (ETICS), dam boards (hard foam boards or rock wool slabs) are fixed to the masonry with an adhesive mortar, then a reinforcing layer is applied to the insulation boards, into which a fiber fabric (usually glass fiber fabric) is laid, and finally the composite system with a top coat covered.

The following embodiments are known from the prior art: DE 2516916 A1 describes a method for producing insulated plaster facades using mortar compositions which contain a plastic additive in the form of an aqueous polymer dispersion. The mortar compounds still contain fiber materials and serve to apply the reinforcing layer, in which a glass silk fabric is embedded. DE 2703342 Al is concerned with the task of creating a mortar for the coating of thermal insulation boards, in which a fiberglass grid embedded therein is reliably protected against the effects of moisture. The object is achieved in that the mortar contains a polymer in addition to a hydraulic binder, with a protective colloid, which loses its surface-active effect when exposed to Ca ²⁺ ions. To this end, polyvinyl alcohol-stabilized vinyl ester polyols are used in the form of their aqueous dispersions or dispersion powders. Compositions for producing reinforcement fabric-free coatings are not described. In DE 4216204 Al is recommended for the thermal insulation of buildings to provide them with a mineral insulation board with plaster layer, wherein between the thermal insulation board and plaster layer a reinforcing fabric is embedded. If necessary, the plaster layer can still contain fiber materials and / or Plastic dispersion powder as an adhesion improver included.

The application of the reinforcing layer on the thermal insulation board requires in principle two operations. In the first step, the reinforcing compound is applied to the thermal insulation board, the second embedding the reinforcing fabric in the reinforcing compound and then smoothing the Armierungsmasse smooth. The introduction of the reinforcing fabric in the applied reinforcing compound is a step that additionally costs not only working time, but also material {reinforcing mesh). It would be simpler to process and less labor-intensive if a reinforcement fabric-free reinforcement compound had the same properties after curing as a conventional reinforcement layer consisting of reinforcement compound and additionally incorporated reinforcement fabric.

The following embodiments of thermal insulation composite systems without reinforcing layer are known from the prior art: DE 10248098 A1 describes a thermal insulation composite system which consists only more of the thermal barrier coating and a plaster layer reinforced with glass fiber, dispensing with a mortar layer with fabric insert. The composition of the plaster layer is not described. For thermal insulation of building walls, a synthetic resin coating is used in DE 3429251 C2 for coating the thermal barrier coating, which contains crosslinkable polymers in the form of their resin dispersions or - solutions and optionally still a supplement of organic and inorganic fibers. On the insertion of a reinforcing fabric in the coating is omitted. The

Use of pre-crosslinked or crosslinkable polymers leads to brittle brushing with the risk of cracking. For the production of a thermal insulation composite system without assembly of a reinforcement fabric, it is recommended in DE 102004048584 B4 to use a composition plaster which contains organic fibers as well as organic and inorganic binders. DE 19839295 C5 relates to a thermal insulation composite system which consists of lightweight mineral insulation panels, which are coated with a Leichtpυtz and glued along the joints with the light plaster. The light plaster contains polymer dispersion and cotton fibers. On the application of a reinforcing fabric is omitted. A reinforcement fabric-free insulation coating is also the subject of DE 4032769 C2.

In this case, a mineral fiber insulation board is provided with an armor-web-free coating, which contains plastic dispersion or synthetic resin solution as binder and, if appropriate, is also filled with mineral fillers and / or fibers and / or pigments. From DE 3040077 C2 a plastered dry mortar for coating insulation boards is known, wherein the insertion of a glass fiber fabric is omitted in the plaster coating. The plaster coating contains alkali-resistant glass fibers and also polymeric compounds such as polyvinyl acetate, polyvinyl alcohol and / or starch or protein derivatives. These polymers are non-redisable synthetic resins with high Tg, well over 25 ° C. Such polymers lead to hard and brittle Armierungsmassen with the risk of cracking, especially at low temperatures or impact load. Dry mortar with a combination of fiber and water-redispersible polymer powder are not described.

The invention relates to dry mortar compositions comprising a) one or more hydraulic binders, b) one or more fillers, c) optionally further additives, characterized in that d) fibers and e) one or more water-redispersible polymer powders based on polymers of ethylenic unsaturated monomers, having a glass transition temperature Tg of -25 ° C to + 25 ° C, are included.

Suitable hydraulic binders a) are, for example, cements, in particular Portland cement, aluminate cement, trass cement, metallurgical cement, magnesia cement, phosphate cement or blastfurnace cement, as well as mixed cements, filling cements, fly ash, microsilica, hydraulic lime and gypsum. Portland cement, aluminate cement and metallurgical cement, as well as mixed cement te, filling cements, hydraulic lime and gypsum. In general, contain the dry mortar compositions 5 to 50 wt .-%, preferably 10 to 30 wt .-%, hydraulic binder, depending ^¬ reduction case based on the total weight of the Trockenmörtelzusammen-.

Examples of suitable fillers b) are quartz sand, quartz flour, calcium carbonate, dolomite, aluminum silicates, clay, chalk, hydrated lime, talc or mica, or lightweight fillers such as pumice, foam glass, aerated concrete, perlite, vermiculite, carbon nanotubes (CNT). It is also possible to use any desired mixtures of the stated fillers. Preference is given to quartz sand, quartz flour, calcium carbonate, chalk or hydrated lime. In general, the Troσkenmörtelzusammenset- include tongues 30 to 90 wt .-%, preferably 40 to 80 wt .-%, fillers ^¬ materials, each based on the total weight of Trockenmör ^¬ telzusammensetzung.

Further customary additives c) for dry mortar compositions are thickeners, for example polysaccharides such as cellulose ethers and modified cellulose ethers, starch ethers, guar gurα, xanthan gum, phyllosilicates, polycarboxylic acids such as polyacrylic acid and their partial esters, and polyvinylalcohols which are optionally acetalized or hydrophobic casein and associative thickeners. Typical additives are also retarders, such as hydroxycarboxylic acids, or dicarboxylic acids or their salts, saccharides, oxalic acid, succinic acid, tartaric acid, gluconic acid, citric acid, sucrose, glucose, fructose, sorbitol, pentaerythritol. A common additive are setting accelerators, for example, alkali or alkaline earth salts of inorganic or organic acids. In addition, still have to be mentioned: hydrophobic agents, preservatives, film forming agent, disper ^¬ greed agents, foam stabilizers, defoamers and flame retardants (eg aluminum hydroxide).

The additives c) are used in the customary, depending on the nature of the additive, amounts. In general, The amounts are from 0.1 to 10 wt .-%, each based on the total weight of the dry mortar composition.

Suitable fiber components d) are natural and synthetic fiber materials, both based on organic and inorganic materials, and mixtures thereof. Examples of natural, organic fibers are cotton, hemp, jute, flax, wood fibers, cellulose, viscose, leather fibers or silicic acid. Examples of synthetic, organic fibers are viscose fibers, polyamide fibers, polyester fibers, polyacrylonitrile fibers, dralon fibers, polyethylene fibers, polypropylene fibers, polyvinyl alcohol fibers or aramid fibers. The inorganic fibers may be, for example, glass fibers, carbon fibers, mineral wool fibers or metal fibers. Preference is given to cotton fibers, polyacrylonitrile fibers and cellulose fibers.

The fibers used typically have a length between 0.1 μm and 16 mm, preferably from 10 μm to 5 mm. But it can also be used shorter or longer. Particular preference is given to using fibers in a length range from 10 μm to 1 mm. The fibers are used as loose fibers and not in the form of a fabric. In general, the dry mortar compositions contain from 0.1% to 5% by weight, preferably from 0.5% to 2% by weight of fibers, each based on the total weight of the dry mortar composition.

As water-redispersible polymer powder e) refers to powder compositions which are accessible by drying the corresponding aqueous dispersions of the base polymers in the presence of protective colloids. Due to this manufacturing process, the finely divided resin of the dispersion is coated with a water-soluble protective colloid of sufficient amount. During drying, the protective colloid acts like a shell, which prevents the particles from sticking together. Upon redispersing in water, the protective colloid redissolves in water and there is an aqueous dispersion of the original polymer particles (Schulze J. in TIZ, No. 9, 1985). Suitable polymers of ethylenically unsaturated monomers are those based on one or more monomers from the group consisting of vinyl esters, {meth} acrylic acid esters, vinylaromatics, olefins, 1,3-dienes and vinyl halides and optionally other monomers copolymerizable therewith. The polymers are preferably not crosslinked.

Suitable vinyl esters are those of carboxylic acids having 1 to 15 carbon atoms. Preference is given to vinyl acetate, vinyl propionate, vinyl butyrate, vinyl 2-ethylhexanoate, vinyl laurate, 1-methylvinyl acetate, vinyl pivalate and vinyl esters of α-branched monocarboxylic acids having 9 to 11 C atoms, for example VeoVa9 ^R or VeoValO ^R {trade names the company Resolution). Especially preferred is vinyl acetate.

Suitable monomers from the group of acrylic acid esters or methacrylic esters are esters of unbranched or branched alcohols having 1 to 15 C atoms. Preferred methacrylates or acrylates are methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-ethylhexyl acrylate. Particularly preferred are methyl acrylate, methyl methacrylate, n-butyl acrylate, t-butyl acrylate and 2-ethylhexyl acrylate.

Preferred vinyl aromatic compounds are styrene, methylstyrene and vinyltoluene. Preferred vinyl halide is vinyl chloride. The preferred olefins are ethylene, propylene and the preferred dienes are 1,3-butadiene and isoprene.

If appropriate, from 0.1 to 5% by weight, based on the total weight of the monomer mixture, of auxiliary monomers can be copolymerized. Preference is given to using from 0.5 to 2.5% by weight of auxiliary monomers. Examples of auxiliary monomers are ethylenically unsaturated mono- and dicarboxylic acids, preferably acrylic acid, methacrylic acid, fumaric acid and maleic acid; ethylenically unsaturated carboxylic acid amides and nitrites, preferably acrylic lamid and acrylonitrile; Mono- and diesters of fumaric acid and maleic acid, such as diethyl and diisopropyl esters and maleic anhydride; ethylenically unsaturated sulfonic acids or salts thereof, preferably vinylsulfonic acid, 2-acrylamido-2-methyl-propanesulfonic acid. Further examples are precrosslinking comonomers such as multiply ethylenically unsaturated comonomers, for example diallyl phthalate, divinyl adipate, diallyl maleate, allyl methacrylate or triallyl cyanurate, or post-crosslinking comonomers, for example acrylamidoglycolic acid (AGA), methyl acrylamidoglycolic acid methyl ester (MAGME), N-methylol acrylamide (NMA), N-methylolmethacrylamide, N-methylolallyl carbamate, alkyl ethers such as isobutoxy ether or esters of N-methylolacrylamide, N-methylolmethacrylamide and N-methylolallylcarbamate. Also suitable are epoxide-functional comonomers such as glycidyl methacrylate and glycidyl acrylate. Further examples are silicon-functional comonomers, such as acryloxypropyltri (alkoxy) - and methacryloxypropyltri (alkoxy) silanes, vinyltrialkoxysilanes and vinylmethyldialkoxysilanes, it being possible for alkoxy groups, for example, to contain ethoxy and ethoxypropylene glycol ether radicals. Mention may also be made of monomers having hydroxyl or CO groups, for example methacrylic acid and acrylic acid hydroxyalkyl esters such as hydroxyethyl, hydroxypropyl or hydroxybutyl acrylate or methacrylate, and also compounds such as diacetoneacrylamide and acetylacetoxyethyl acrylate or methacrylate.

The monomer selection or the selection of the proportions by weight of the comonomers is carried out in such a way that a glass transition temperature Tg of -25 ° C to + 25 ° C, preferably -10 ⁰ C to +10 ⁰ C, more preferably -10 ⁰ C to O ⁰ C results. The glass transition temperature Tg of the polymers can be determined in a known manner by means of differential scanning calorimetry (DSC). The Tg can also be approximated by the Fox equation. After Fox TG, Bull. Am. Physics Soc. 1, 3, page 123 (1956): l / Tg = ^' xl / Tgl + x2 / Tg2 + ... + xn / Ign, where xn is the mass fraction (wt% / 100) of the monomer n, and Tgn is the glass transition temperature in Kelvin of the homopolymer of the monomer n. Tg values for homopolymers are listed in Polymer Haπdbook 2nd Edition, J. Wiley & Sons, New York (1975).

Preference is given to copolymers of vinyl acetate with 1 to 50 wt .-% of ethylene;

Copolymers of vinyl acetate with 1 to 50% by weight of ethylene and 1 to 50% by weight of one or more further comonomers from the group of vinyl esters having 1 to 12 carbon atoms in the carboxylic acid radical such as vinyl propionate, vinyl laurate, vinyl esters of al ~ pha-branched carboxylic acids having 9 to 13 C atoms, such as VeoVa9, VeoValO, VeoVall;

Copolymers of vinyl acetate, 1 to 50 wt .-% of ethylene and preferably 1 to 60 wt .-% of (meth) acrylic acid esters of unbranched or branched alcohols having 1 to 15 carbon atoms, in particular n-butyl acrylate or 2-ethylhexyl acrylate; and

Copolymers with 30 to 75 wt .-% vinyl acetate, 1 to 30 wt .-% vinyl laurate or vinyl ester of an alpha-branched carboxylic acid having 9 to 11 carbon atoms, and 1 to 30 wt .-% of {meth) acrylic acid esters of unbranched or branched Alcohols having 1 to 15 carbon atoms, in particular n-butyl acrylate or 2-ethylhexyl acrylate, which still contain 1 to 40% by weight of ethylene;

Copolymers with vinyl acetate, 1 to 50% by weight of ethylene and 1 to 60% by weight of vinyl chloride; wherein the polymers can still contain the said auxiliary monomers in the stated amounts, and add the data in% by weight to each 100 wt .-%.

Also preferred are (meth) acrylic acid ester polymers, such as copolymers of n-butyl acrylate or 2-ethylhexyl acrylate or Copolyitierisate of methyl methacrylate with n-butyl acrylate and / or 2-Ethylhexylaσrylat;

Styrene-acrylic acid ester copolymers with one or more monomers from the group of methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate;

Vinyl acetate-acrylic ester copolymers with one or more monomers from the group of methyl acrylate, ethyl acrylate, Propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate and optionally ethylene;

Styrene-1,3-butadiene copolymers; wherein the polymers can still contain the said auxiliary monomers in the stated amounts, and the data in wt .-% add up to each 100 wt .-%.

Most preferred are water-redispersible polymer powders e) comprising copolymers with vinyl acetate and from 5 to 50% by weight of ethylene, or

Copolymers with vinyl acetate, 1 to 50% by weight of ethylene and 1 to 50% by weight of a vinyl ester of α-branched monocarboxylic acids having 9 to 11 carbon atoms, or copolymers with 30 to 75% by weight of vinyl acetate, 1 to 30 wt .-% vinyl laurate or vinyl ester of an alpha-branched

Carboxylic acid having 9 to 11 carbon atoms, and 1 to 30 wt .-% {meth-th) acrylic acid esters of unbranched or branched alcohols having 1 to 15 carbon atoms, which still contain 1 to 40 wt .-% ethylene, or copolymers with vinyl acetate, 5 to 50% by weight of ethylene and 1 to 60% by weight of vinyl chloride.

The preparation of the polymers is carried out by the emulsion polymerization or after Suspensionspolymerisati- onsverfahren in the presence of protective colloids, preferably by the emulsion polymerization, the polymerization temperature being generally from 20 ⁰ C to 100 ⁰ C, preferably 60 ⁰ C to 9O ⁰ C, and in the copolymerization of gaseous comonomers such as ethylene under pressure, generally between 5 bar and 100 bar, can be used. The initiation of the polymerization takes place with the water-soluble or monomer-soluble initiators or redox initiator combinations customary for emulsion polymerization or suspension polymerization. Examples of water-soluble initiators are sodium persulfate, hydrogen peroxide,

Azobisisobutyronitrile. Examples of monomer-soluble initiators are di-acetyl peroxydicarbonate, dicyclohexyl peroxydicarbonate, dibenzoyl peroxide. The mentioned initiators are in the generally in an amount of 0.01 to 0.5 wt .-%, based on the total weight of the monomers used. Combinations of the stated initiators in combination with reducing agents are used as redox initiators. Suitable reducing agents are, for example, sodium sulfite, sodium hydroxymethanesulfinate and ascorbic acid. The amount of reducing agent is preferably 0.01 to 0.5 wt .-%, based on the total weight of the monomers.

For controlling the molecular weight, regulating substances can be used during the polymerization. If regulators are used, they are usually used in amounts of from 0.01 to 5.0% by weight, based on the monomers to be polymerized, and are metered in separately or else premixed with reaction components. Examples of such substances are n-dodecyl mercaptan, tert. -Dodecylmercaptan, Merσaptopro- pionsäure, Mercaptopropionsäuremethylester, isopropanol and acetaldehyde. Preferably, no regulatory substances are used.

To stabilize the polymerization batch, protective colloids are used, if appropriate in combination with emulsifiers. Suitable protective colloids are partially hydrolyzed or fully hydrolyzed polyvinyl alcohols; polyvinylpyrrolidones; Polyvinyl acetals; Polysaccharides in water-soluble form such as starches (amylose and amylopectin) or dextrins or cyclodextrins, celluloses and their carboxymethyl, methyl, hydroxyethyl, hydroxypropyl derivatives; Proteins such as casein or caseinate, soy protein, gelatin; lignin; synthetic polymers such as poly (meth) acrylic acid, copolymers of (meth) acrylates with carboxyl-functional comonomer units, poly (meth) acrylamide, polyvinylsulfonic acids and their water-soluble copolymers; Melamine formaldehyde sulfonates, naphthalene formaldehyde sulfonates, styrene maleic acid and vinyl ether maleic acid copolymers; cationic protective colloids, for example polymers having monomer units with quaternary ammonium groups. Preference is given to partially hydrolyzed or fully hydrolyzed polyvinyl alcohols. Particular preference is given to partially hydrolyzed polyvinyl alcohols having a degree of hydrolysis of 80 to 95 mol% and a Höppler viscosity in 4% aqueous solution of 1 to 30 mPas (method according to Hoppler at 20 ⁰ C, DIN 53015).

After completion of the polymerization, the residual monomer removal can be postpolymerized using known methods, for example by postpolymerization initiated with the redox catalyst. Volatile residual monomers can also be obtained by means of distillation, preferably under reduced pressure, and optionally by passing or passing over inert gases

Trailing gases such as air, nitrogen or water vapor are removed. The aqueous dispersions obtainable therewith have a solids content of from 30 to 75% by weight, preferably from 50 to 60% by weight.

To prepare the polymer powders which are redispersible in water, the dispersions are dried, if appropriate after the addition of further protective colloids as a drying aid, for example by means of fluidized bed drying, freeze drying or spray drying. Preferably, the dispersions are spray-dried. The spray drying is carried out in conventional spray drying systems, wherein the atomization can be done by means of one-, two- or multi-fluid nozzles or with a rotating disk. The outlet temperature is generally in the range of 45 ° C to 120 ⁰ C, preferably 60 ⁰ C to 90 ⁰ C, depending on

Plant, Tg of the resin and desired degree of drying, selected. The viscosity of the food to be atomized is adjusted via the solids content so that a value of <500 mPas (Brookfield viscosity at 20 revolutions and 23 ° C.), preferably <250 mPas, is obtained. The solids content of the dispersion to be atomized is> 35%, preferably> 40%.

As a rule, the drying aid is used in a total amount of from 0.5 to 30% by weight, based on the polymeric constituents of the dispersion. That is, the total amount of protective colloid before the drying process should be at least 1 to 30 wt .-%, based on the polymer content; 5 to 20% by weight, based on the polymer fraction, are preferably used. Suitable drying aids are known to the person skilled in the art and are, for example, the abovementioned protective colloids. Particularly preferred partially hydrolyzed polyvinyl alcohols with a hybrid drolysegrad are from 80 to 95 mol% and a Höppler viscosity in 4% strength aqueous solution of 1 to 30 mPas (Höppler method at 20 ⁰ C, DIN 53015).

During atomization, a content of up to 1.5% by weight of antifoaming agent, based on the base polymer, has proven favorable in many cases. In order to increase the shelf life by improving the blocking stability, in particular in the case of powders with a low glass transition temperature, the powder obtained may be provided with an antiblocking agent, preferably from 1 to 30% by weight, based on the total weight of polymeric constituents. Examples of antiblocking agents are Ca or Mg carbonate, talc, gypsum, silicic acid, kaolins such as metakaolin, silicates having particle sizes preferably in the range from 10 nm to 10 μm.

The preparation of the dry mortar composition is generally carried out by mixing and homogenizing the components a) to e) in a conventional dry mortar apparatus into a dry mortar. The amount of water required for processing to mortar masses is added before preparation. It is also possible to proceed in such a way that the individual components a) to e) are stirred separately with water to form a mortar composition. To produce the reinforcing layer, the reinforcing mortar obtained therewith is subsequently applied to the insulating boards.

The dry mortar compositions obtainable therewith are suitable for the production of reinforcing materials for thermal insulation composite systems which do not contain a fabric insert. Other applications are those for the production of adhesives and coating compositions. Examples of adhesives are adhesives for thermal insulation panels and sound insulation panels, tile adhesives, and adhesives for bonding wood and wood-based materials. Examples of coating compositions are mortars, leveling compounds, screeds, plasters.

The following examples serve to further illustrate the invention:

The following redispersible polymer powders were used in (comparative) examples 1 to 7:

Dispersion powder 1:

Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -9 ° C with cationic Schutzkol ^¬ loid.

Dispersion powder 2:

Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -7 ⁰ C with polyvinyl alcohol protective colloid.

Dispersion powder 3:

Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -7 ⁰ C with polyvinyl alcohol protective colloid and silane.

For the preparation of the mortar compositions for the (comparative) Examples 1 to 7, the ingredients listed in Table 1, in the amounts listed there, were mixed with each of the parts indicated in Table 1 parts by weight of water to the mortar composition.

The properties of the mortars were evaluated Standver ^¬ like judges suppleness and air entrainment and judged very good, good, satisfactory with the notes.

For testing, the mortar masses were each applied as a reinforcing mortar in a layer thickness of 4 mm on expanded polystyrene (EPS) plates. In the case of Comparative Example 1, a glass silk fabric was inserted in the sleeve layer. After curing of the reinforcing layer, the tensile strength and the break on EPS plates were determined according to test method DIN 18555-6. The dent level on EPS was determined according to test method ISO 7892. The results of the testing are summarized in Table 2.

The results show that the fibrous mortar according to the invention (Examples 3 to 7) can be processed like fiber-free mortar compositions (Comparative Examples 1 and 2). There is no deterioration in stamina, suppleness and air entrainment.

The adhesion to the thermal insulation board is significantly improved compared to fiber-free reinforcing mortar - see comparison of the adhesion values and EPS-Ausriss of Vbsp. 1/2 with examples 3 to 7.

It was surprising that the denting values for the reinforcing plaster according to the invention in part (Examples 5 to 7) are markedly better than the value for glass fiber-reinforced armor plasters {Comparative Example 1).

Table 1:

Tabelle 2:

Table 2:

Claims

Claims: 1. dry mortar compositions comprising a) one or more hydraulic binders, b) one or more fillers, c) optionally further additives, characterized in that d) fibers and e) one or more water-redispersible polymer powders based on polymers of ethylenic unsaturated monomers, having a glass transition temperature Tg of -25 ° C to + 25 ° C, are contained. 2. dry mortar compositions according to claim 1, characterized in that as component a) one or more hydraulic binders from the group containing Portland cement, Aluminatzement and Hüttenzement, mixed cements, filling cements, hydraulic lime and gypsum are included. 3. dry mortar compositions according to claim 1 or 2, characterized in that as component b) one or more fillers from the group comprising quartz sand, Quartz flour, calcium carbonate, chalk and hydrated lime are included. 4. dry mortar compositions according to claim 1 to 3, character- ized in that as component d) one or more fibers from the group of organic fibers or inorganic fibers are included. 5. dry mortar compositions according to claim 1 to 4, characterized in that as component e) one or more water-redispersible polymer powder from the group comprising copolymers with vinyl acetate and 5 to 50 wt .-% of ethylene; Copolymers with vinyl acetate, 1 to 50% by weight of ethylene and 1 to 50% by weight of a vinyl ester of α-branched monocarboxylic acids having 9 to 11 Carbon atoms; Copolymers containing from 30 to 75% by weight of vinyl acetate, from 1 to 30% by weight of vinyl laurate or vinyl ester of an alpha-branched carboxylic acid having from 9 to 11 carbon atoms, and also to 30 wt .-% (meth) acrylic acid esters of unbranched or branched alcohols having 1 to 15 carbon atoms, which still contain 1 to 40 wt .-% of ethylene; Copolymers with vinyl acetate, 5 to 50% by weight of ethylene and 1 to 60% by weight of vinyl chloride; are included. 6. A process for the production of reinforcing fabric-free reinforcing compositions, wherein the dry mortar compositions according to claim 1 to 5 are stirred with water to a mortar composition and the reinforcing mortar obtained therewith is then applied to the insulation boards. 7. Use of the dry mortar compositions according to claim 1 to 5 for the production of adhesives and coating compositions. 8. Use according to claim 7 for the preparation of adhesives for thermal insulation boards and sound insulation boards, tile adhesive, and adhesive for bonding wood and wood-based materials. 9. Use according to claim 7 for the production of mortars, leveling compounds, screeds, plasters.