Classifications

• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
  • C04B24/24—Macromolecular compounds
  • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/04—Portland cements
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/06—Aluminous cements
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/08—Slag cements
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
  • C04B28/10—Lime cements or magnesium oxide cements
  • C04B28/12—Hydraulic lime
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
  • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
  • C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
  • C04B40/0608—Dry ready-made mixtures, e.g. mortars at which only water or a water solution has to be added before use
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
  • C04B2103/0045—Polymers chosen for their physico-chemical characteristics
  • C04B2103/0065—Polymers characterised by their glass transition temperature (Tg)
• • C—CHEMISTRY; METALLURGY
  • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
  • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
  • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
  • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
  • C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials

Definitions

• the invention relates to the use of polypropylene oxide or ethylene oxide-propylene oxide copolymer as adhesion-improving additive in adhesive and reinforcing mortar for external thermal insulation systems.
• thermal insulation composite system For the construction of a thermal insulation composite system (ETICS) insulation boards, usually rigid polystyrene panels, attached to the masonry with an adhesive mortar, then a reinforcing mortar is applied to the insulation boards, in whose layer generally fiber fabric or fibers are inserted, and finally the composite system with covered by a finishing coat.
• Essential for the property profile of such adhesive mortars and reinforcing mortars are, in addition to the good processability of the fresh mortar, high flexibility and impact resistance, good water vapor permeability, water-repellent properties, good adhesion to mineral substrates and good adhesion to the insulating materials , in particular on polystyrene plates.
• the formulations underlying the adhesive mortars and reinforcing mortars are modified with thermoplastic polymers based on ethylenically unsaturated monomers.
• dry mortars containing mineral binders are modified with water-redispersible polymer powders on the basis of the above-mentioned thermoplastic polymers. With this polymer modification, mortar compositions are obtained which meet the above requirements.
• the object was achieved by the use of polypropylene oxides or ethylene oxide-propylene oxide copolymers.
• Polypropylene oxide (polypropylene glycol) is known from EP 0573036 Bl as Schwundenburgredufugder addition.
• DE-OS 1935507 polypropylene glycol is called defoamer for mortar or concrete masses.
• WO 01/04212 A1 uses a combination of phenol-formaldehyde condensate and polyoxyalkylene compounds to improve the redispersibility of water-redispersible polymer powders.
• the invention relates to the use of polypropylene oxides or ethylene oxide-propylene oxide copolymers as adhesion-improving additive in adhesive and reinforcing mortar for external thermal insulation systems.
• Preferred are polypropylene oxides having a weight average molecular weight of 1000 to 4000 g / mol, more preferably from 2000 to 4000 g / mol.
• copolymers which contain ethylene oxide and propylene oxide monomer units (EO-PO copolymers) and which have a weight-average molecular weight of from 400 to 4000 g / mol. Preference is given to EO-PO copolymers having more than 50 mol% of PO units.
• the polypropylene oxides or ethylene oxide / propylene oxide copolymers are used to improve the adhesion in an amount of from 0.05 to 5% by weight, preferably from 0.2 to 2% by weight, based in each case on the proportion of polymer powder c).
• the bonding and reinforcing mortars for thermal insulation composite systems are generally provided as dry mortar compositions and mixed with water at the construction site.
• the dry mortar compositions contain a) one or more mineral binders, b) one or more fillers, c) one or more water-redispersible polymer powders based on polymers of ethylenically unsaturated monomers having a glass transition temperature Tg of -25 ° C to + 25 °, and optionally d) further additives.
• Suitable mineral binders a) are, for example, cements, in particular Portland cement, Aluminatzement, Trassze- ment, Wegtenzement, Magnesiazement, phosphate cement or blast furnace cement, and mixed cements, filling cements, fly ash, micro silica, lime and gypsum.
• Preferred are Portland cement, Alumi natzement and slag cement, as well as mixed cements, fillers, lime and gypsum.
• the dry mortar compositions contain from 5 to 50% by weight, preferably from 10 to 30% by weight, of mineral binders, in each case based on the total weight of the dry mortar composition.
• suitable fillers b) are quartz sand, quartz powder, calcium carbonate, dolomite, aluminum silicates, clay, chalk, hydrated lime, talc or mica, or also lightweight filler materials such as pumice, foam glass, aerated concrete, perlite, vermiculite, Carbo-Nano-Tubes (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 dry mortar compositions contain from 30 to 90% by weight, preferably from 40 to 80% by weight, of fillers, based in each case on the total weight of the dry mortar composition.
• thickeners for example polysaccharides such as cellulose ethers and modified cellulose ethers, starch ethers, guar gum, xanthan gum, sheet silicates, polycarboxylic acids such as polyacrylic acid and their partial esters, and also polyvinylalcohols which may be acetalated or hydrophobically modified can, 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.
• the additives d) 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.
• water-redispersible polymer powder c) 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 like a mantle 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 comprising vinyl esters, (meth) acrylic esters, vinylaromatics, olefins, 1,3-dienes and vinyl halides and optionally further monomers copolymerizable therewith.
• 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 branched monocarboxylic acids having 9 to 11 C atoms, for example VeoVa9 R or VeoValO R (trade names of Company Resolution). Particularly 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.
• 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 acrylamide 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-methylpropanesulfonic acid.
• precrosslinking comonomers such as multiply ethylenically unsaturated comonomers, for example diallyl phthalate, divinyl adipate, diallyl maleate, allyl methacrylate or triallyl cyanurate, or postcrosslinking 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 the isobutoxy ether or esters of N-methylolacrylamide, N-methylolmethacrylamide and N-methylolallylcarbamate.
• AGA acrylamidoglycolic acid
• MAGME methyl acrylamidoglycolic acid methyl ester
• NMA N-methylol acrylamide
• alkyl ethers such as the isobutoxy ether or
• epoxide-functional comonomers such as glycidyl methacrylate and glycidyl acrylate.
• silicon-functional comonomers such as acryloxypropyltri (alkoxy) - and methacryloxypropyltri (alkoxy) silanes, vinyltrialkoxysilanes and vinylmethyldialkoxysilanes, where as alkoxy groups, for example, ethoxy and ethoxypropylene glycol ether radicals may be present.
• methacrylic acid and acrylic acid hydroxyalkyl esters such as hydroxyethyl, hydroxypropyl or hydroxybutyl acrylate or methacrylate
• compounds such as diacetoneacrylamide and acetylacetoxyethyl acrylate or methacrylate.
• the monomer selection or the selection of the weight proportions of the comonomers is carried out so that a glass transition temperature Tg of -25 ° C to + 25 ° C, preferably -10 ° C to + 10 ° C, more preferably -10 ° C to 0 ° C. results.
• the glass transition temperature Tg of the polymers can be determined in a known manner by means of
• Differential Scanning Calorimetry can be determined (determining the inflection point of the curve).
• the polymers may still contain the abovementioned auxiliary monomers in the stated amounts, and add up the details in% by weight to 100% by weight in each case.
• (meth) acrylic acid ester polymers such as copolymers of n-butyl acrylate or 2-ethylhexyl acrylate or copolymers of methyl methacrylate with n-butyl acrylate and / or 2-ethylhexyl acrylate; Styrene -Acrylklareester copolymers with one or more monomers from the group of methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, 2 -Ethylhexylacrylat;
• polymers can still contain the said auxiliary monomers in the stated amounts, and the data in wt .-% add up to each 100 wt .-%.
• water-redispersible polymer powders c) comprising copolymers with vinyl acetate and 5 to 50% by weight of ethylene, or
• 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 .-% (meth) acrylic acid esters of unbranched or branched alcohols having 1 to 15 carbon atoms, which still contain 1 to 40 wt .-% of ethylene, or
• Copolymers with vinyl acetate from 5 to 50% by weight of ethylene and from 1 to 60% by weight of vinyl chloride, it being possible for the polymers to contain the abovementioned auxiliary monomers in the stated amounts, and the data in% by weight to 100% by weight in each case. - Add up%.
• the polymers are prepared by the emulsion polymerization process or by the suspension polymerization process in the presence of protective colloids, preferably by the emulsion polymerization process, the polymerization temperature being generally from 20.degree. C. to 100.degree. C., preferably from 60.degree. C. to 90.degree in the copolymerization of gaseous comonomers such as ethylene under pressure, generally between 5 bar and 100 bar, can be worked.
• 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 dicetyl peroxydicarbonate, dicyclohexyl peroxydicarbonate, dibenzoyl peroxide.
• the initiators mentioned are generally used in an amount of 0.01 to 0.5 wt .-%, based on the total weight of the monomers.
• 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.
• 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, Mercaptopro- pionchure, Mercaptopropionchuremethylester, isopropanol and acetaldehyde. Preferably, no regulatory substances are used.
• protective colloids are used, if appropriate in combination with emulsifiers.
• Suitable protective colloids are partially hydrolyzed or fully hydrolyzed polyvinyl alcohols; Polyvinyl pyrrolidones; 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 pol (meth) acrylic acid, copolymers of (meth) - acrylates having carboxyl-functional comonomer units, poly (meth) acrylamide, polyvinylsulfonic acids and their water-soluble copolymers; Melamine formaldehyde sulfonates, naphthalene formalde
• partially hydrolyzed or fully hydrolyzed polyvinyl alcohols Preference is given to partially hydrolyzed or fully hydrolyzed polyvinyl alcohols. Particularly preferred are partially hydrolyzed polyvinyl alcohols having a degree of hydrolysis of from 80 to 95 mol% and a Höppler viscosity in 4% strength aqueous solution of from 1 to 30 mPas (Höppler method at 20 ° C., DIN 53015).
• postpolymerization can be postpolymerized to the residual monomer removal using known methods, for example by postpolymerization initiated with the redox catalyst.
• Volatile residual monomers can also by means of distillation, preferably under reduced pressure, and optionally by passing or passing of inert
• the aqueous dispersions obtainable therewith have a solids content of from 30 to 75% by weight, preferably from 50 to 60% by weight.
• 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.
• 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 ° C, preferably 60 ° C to 90 ° C, depending on the system, Tg of the resin and the desired degree of drying selected.
• the viscosity of the food to be cooked is adjusted via the solids content so that a value of ⁇ 500 mPas
• the solids content of the dispersion to be compressed is> 35%, preferably> 40%.
• the drying aid is used in a total amount of 0.5 to 30 wt .-%, 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 are partially hydrolyzed polyvinyl alcohols having a degree of hydrolysis of from 80 to 95 mol% and a Höppler viscosity in 4% strength aqueous solution of from 1 to 30 mPas (Höppler method at 20 ° C., DIN 53015).
• the resulting powder can be provided with an antiblocking agent, preferably from 1 to 30% by weight, based on the total weight of polymeric constituents.
• 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 ⁇ m.
• the addition of the polypropylene oxide or ethylene oxide-propylene oxide copolymer -Anteils is preferably carried out together with the proportion of water-redispersible polymer powder to a dry mortar formulation for adhesive or reinforcing mortar.
• the proportion of polypropylene oxide or ethylene oxide / propylene oxide copolymer is added before or during the preparation of the polymer dispersion by means of polymerization.
• the polypropylene oxide or ethylene oxide-propylene oxide copolymer The sat content can also be added to the polymer dispersion before the spray drying.
• the preparation of the dry mortar composition is generally carried out so that the components a) to d), and optionally the adhesion-improving additive according to the invention as far as it is not added to the polymer powder portion, mixed and homogenized in conventional powder mixing devices to form 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 d) and, if appropriate, the adhesion-improving additive according to the invention, if it is not added with the polymer powder fraction, are separately stirred with water to form a mortar composition.
• the adhesion-promoting additive can also, if it is present under normal conditions as a liquid, be applied to a solid support material, for example silicic acid, and added in this form to the polymer powder or to a dry mortar composition.
• a solid support material for example silicic acid
• the adhesive and reinforcing mortars for thermal insulation composite systems are preferably used for bonding and reinforcing polystyrene panels and rock wool molded bodies.
• Dispersion powder 1 is a mixture of Dispersion powder 1:
• Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -7 ° C. with polyvinyl alcohol protective colloid and 1.0% by weight of polypropylene glycol having a molecular weight of about 430 (Pluriol P400 Fa. BASF), based on dispersion powder.
• Dispersion powder 2 is a mixture of Dispersion powder 2:
• Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -7 ° C with polyvinyl alcohol protective colloid and 1.0 wt .-% polypropylene glycol having a weight-average molecular weight of about 2000 (Pluriol R P2000 Fa. BASF) on dispersion powder.
• Dispersion powder 3 is a mixture of Dispersion powder 3:
• Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -7 ° C with polyvinyl alcohol protective colloid Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of -7 ° C with polyvinyl alcohol protective colloid.
• Dispersion powder based on a vinyl acetate-ethylene copolymer having a Tg of ⁇ 7 ° C with polyvinyl alcohol protective colloid and 1.0 wt .-% of aromatic polyether, based on dispersion powder.
• the mortar compositions were each applied as reinforcing mortar in a layer thickness of 4 mm on expanded polystyrene (EPS) plates.
• EPS expanded polystyrene

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• Chemical & Material Sciences (AREA)
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