EP4695210A1 - Füllstoffarme oder füllstofffreie baustoffformulierungen - Google Patents
Füllstoffarme oder füllstofffreie baustoffformulierungenInfo
- Publication number
- EP4695210A1 EP4695210A1 EP23720791.5A EP23720791A EP4695210A1 EP 4695210 A1 EP4695210 A1 EP 4695210A1 EP 23720791 A EP23720791 A EP 23720791A EP 4695210 A1 EP4695210 A1 EP 4695210A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- building material
- dry
- cellulose fiber
- formulations
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- 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
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0057—Polymers chosen for their physico-chemical characteristics added as redispersable powders
-
- 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
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00517—Coating or impregnation materials for masonry
-
- 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
-
- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
- C04B2111/00672—Pointing or jointing materials
-
- 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
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
Definitions
- the invention relates to low-filler or filler-free building material dry formulations, polymer compositions containing polymer powder and water-insoluble cellulose fiber gels, as well as corresponding low-filler or filler-free fresh mortars and hardened mortars and their use, for example, as adhesives or coating agents, in particular tile adhesives, leveling compounds, screeds or reinforcing compounds for thermal insulation composite systems.
- Dry building material formulations that have been common up to now contain not only mineral binders such as cement and additives, but also fillers as the main quantitative component, as described for example in US2013/0143023, US8846157 or US10239789.
- Mixing the dry building material formulations with water produces fresh mortar. After the fresh mortar has set, solid mortar is obtained.
- additives are polymers in the form of water-redispersible powders (polymer powders), which are powder compositions that are accessible by drying the corresponding aqueous polymer dispersions in the presence of protective colloids. Due to this manufacturing process, the finely divided polymer resin of the dispersion is coated with a sufficient amount of a water-soluble protective colloid.
- the protective colloid acts like a coat that prevents the particles from sticking together.
- the protective colloid dissolves again in water and an aqueous dispersion of the original polymer particles is formed (Schulze J. in TIZ, No. 9, 1985).
- fillers are a scarce or increasingly scarce commodity in some regions of the world. There is also an increasing need for more resource-efficient, more sustainable construction. It is therefore desirable to reduce or even completely eliminate the filler content in dry building material formulations, although the fresh mortar should have the usual processing properties as far as possible and also the solids Mortar properties should meet or, if possible, exceed the standard requirements, in particular the C2 standard according to EN12004.
- the task was to provide dry building material formulations, fresh mortar and hardened mortar with at least a reduced filler content, whereby the fresh mortar should be easy to process, have a long open time and, in addition, the hardened mortar should have advantageous adhesive tensile strengths after freeze-thaw cycles but also in standard climates and should preferably meet the C2 standard.
- building material formulations or mortars that contained one or more water-insoluble cellulose fiber gels in the form of dispersible powders or in the form of dispersions.
- Such building material formulations or mortars produce the desired fresh and hardened mortar properties even when relatively large amounts of water are used for mixing. Water can act as a so-called temporary filler in the fresh mortars, which is at least partially released again during the formation of the hardened mortar and is therefore sustainable in an ecological sense. It was precisely through the use of water-insoluble cellulose fiber gels that mortar with the desired fresh and hardened mortar properties was obtained. Conventional thickeners swell in water and have a water-retaining effect in mortars.
- One subject of the invention are dry building material formulations containing one or more hydraulically setting binders , one or more polymers of ethylenically unsaturated monomers in the form of water - redispersible powders ( polymer powders ) and optionally one or more additives , characterized in that
- the water-insoluble cellulose fiber gel in the form of dispersible powders has average particle sizes of preferably 0.1 to 1000 pm, particularly preferably 1 to 750 pm and most preferably 10 to 500 pm.
- the average particle sizes are determined by means of laser light diffraction and laser light scattering using the LS 13320 measuring device from Beckmann-Coulter, preferably in accordance with the device manufacturer's instructions after adequate dilution of the aqueous dispersions with demineralized water.
- the grain fractions described below refer to the determination method using sieve analysis according to DIN EN ISO 4610 with an air jet sieve with mesh sizes of 150 pm, 71 pm or 32 pm.
- the grain fraction of the water-insoluble cellulose fiber gel in the form of dispersible powders with diameters of > 150 pm is preferably ⁇ 50%, particularly preferably ⁇ 30% and most preferably ⁇ 15%.
- Form of dispersible powders with diameters of > 71 pm is preferably ⁇ 75%, more preferably ⁇ 50% and most preferably ⁇ 35%.
- the grain fraction of the water-insoluble cellulose fiber gel in the form of dispersible powders with diameters of > 32 pm is preferably 5% to 95%, particularly preferably 15% to 90% and most preferably 25% to 80%.
- the water-insoluble cellulose fiber gels in the form of aqueous dispersions have a viscosity of preferably 500 to 10,000 mPa.s, particularly preferably 1,000 to 5,000 mPa.s and most preferably 1,500 to 3,000 mPa.s (Brookfield viscosity, 2% dispersion in water, at 20 revolutions and 20°C (activation: 5 cm dissolver disk, 2000 rpm, 6 min).
- the fibers of the fiber gel have a length of preferably 0.1 pm to 1,000 pm, particularly preferably 0.5 pm to 750 pm and most preferably 1 pm to 500 pm.
- the fibers of the fiber gel have a fiber diameter of preferably ⁇ 10 pm.
- the water-insoluble cellulose fiber gel in the form of dispersible powders has a density of preferably 0.5 to 1.5 g/cm 3 , particularly preferably 0.8 to 1.3 g/cm 3 and most preferably 1.0 to 1.2 g/cm 3 (determined by means of a helium pycnometer).
- the water-insoluble cellulose fiber gel in the form of dispersible powders has a bulk density of preferably 200 to 1,000 g/L, particularly preferably 250 to 700 g/L (determined according to EN ISO 60).
- the water-insoluble cellulose fiber gel in the form of dispersible powders has a water absorption capacity as a weight ratio of water-insoluble cellulose fiber gel to water of preferably 1 to 10 to 1 to 200, more preferably 1 to 20 to 1 to 150, particularly preferably 1 to 25 to 1 to 100 and most preferably 1 to 30 to 1 to 75.
- the water absorption capacity is determined by mixing the water-insoluble cellulose fiber gel in the form of a dispersible Powder is placed in a paper filter moistened with water, then the water-insoluble cellulose fiber gel is saturated with water by adding water and excess water is allowed to drip off through the moistened paper filter.
- the water absorption capacity is the difference between the weight of the moistened paper filter before adding the water-insoluble cellulose fiber gel and the weight of the moistened paper filter that contains the water-insoluble cellulose fiber gel saturated with water. The determination is carried out at 21 °C and 50% relative humidity.
- the water-insoluble cellulose fiber gel in the form of dispersible powders has a water retention capacity of preferably 65% to 99%, particularly preferably 75% to 97% and most preferably 80% to 95%.
- the water retention capacity is determined in accordance with DIN18555, Part 7 using the filter plate method. According to the standard, the water retention capacity is the proportion of water, expressed as a percentage, that remains in the mortar after 5 minutes following capillary water removal through an absorbent base.
- the cellulose of the water-insoluble cellulose fiber gel is preferably in crystalline, particularly microcrystalline form.
- the water-insoluble cellulose fiber gel is present in water preferably in colloidal form or in the form of a hydrogel.
- the water-insoluble cellulose fiber gel is preferably thixotropic.
- the water-insoluble cellulose fiber gel is preferably based on one or more water-insoluble microcrystalline celluloses (MCC) and one or more water-soluble dispersants. This is generally crucial for the fiber gel aspect.
- MCC microcrystalline celluloses
- the gel is generally activated by mixing in water under the influence of shear forces. Shear activation in water disperses the water-insoluble MCC, while the water-soluble dispersant dissolves and acts as a "spacer" between the MCC particles, preventing their agglomeration.
- Suitable raw materials for producing water-insoluble microcrystalline cellulose include cellulose from natural sources such as grass, potatoes, cotton or even wood pulp, preferably rice, grain or corn, particularly preferably in the form of straw and most preferably wheat straw or seaweed.
- Water-insoluble microcrystalline cellulose (MCC) can be obtained, for example, by enzymatic treatment, steam explosion or, in particular, chemical treatment of raw material and, if appropriate, mechanical comminution such as grinding or sanding, if appropriate sifting, if appropriate fractionating, if appropriate compacting and, if appropriate, neutralizing and, if appropriate, cleaning.
- Chemical treatment is preferably carried out by treatment with mineral acids such as sulfuric acid, hydrobromic acid or, in particular, hydrochloric acid. Such treatment preferably involves depolymerization or hydrolysis of raw material. Highly reactive amorphous regions are preferentially hydrolyzed, and water-insoluble microcrystalline cellulose (MCC) is released.
- Water-soluble dispersants for the water-insoluble cellulose fiber gel are, for example, guar gum, locust bean gum, sodium alginate, carrageenan, potassium alginate, xanthan gum, tragacanth gum, karaya gum, gum arabic, agar, konjac, starch, maltodextrin, inulin, cellulose derivatives such as carboxymethylcellulose or cellulose ethers, in particular hydroxymethylcellulose, methylcellulose and hydroxypropylmethylcellulose.
- Carboxymethylcellulose (CMC) and xanthan gum are preferred.
- Water-insoluble microcrystalline cellulose (MCC) and water-soluble dispersants can generally be mixed in dry or aqueous form and, if necessary, subsequently dried, for example by spray drying.
- the gel is generally activated by mixing in water under the action of shear forces. The activation can take place beforehand or during the mixing of the dry building material formulations according to the invention.
- Water-insoluble cellulose fiber gels in the form of dispersible powders are also commercially available, for example under the name Arbocel gel, in particular Arbocel P 3500 F (trade name of J. Rettenmaier).
- hydraulically setting binders are cements, in particular Portland cement (CEM I), Portland slag cement (CEM II), blast furnace cement (CEM III), pozzolanic cement (CEM IV), composite cement (CEM V), Portland silicate dust cement, Portland slate cement, Portland limestone cement, trass cement, slag cement, magnesia cement, phosphate cement, blast furnace cement, mixed cements (composite cements), filling cements or quick-setting cement, or fly ash or hydraulic lime.
- Cements such as Portland cement, aluminate cement, slag cement, mixed cements and filling cements, or hydraulic lime are preferred.
- rapid setting cements examples include aluminate cement, calcium sulfoaluminate cements and high alumina cement.
- Portland cement CEM I Portland slag cement CEM II/A-S, CEM II/B-S, Portland limestone cement CEM II/A-LL, Portland fly ash cement CEM II/A-V, Portland fly ash slag cement CEM II/B-SV or blast furnace cement CEM III/A, CEM III/B, CEM III/B and fast-setting cement, in particular aluminate cement.
- the building material dry formulations are based on hydraulically setting binders to an extent of preferably 50 to 99 wt.%, more preferably 60 to 98 wt.%, particularly preferably 70 to 97 wt.%, most preferably 80 to 96 wt.% and most preferably 85 to 95 wt.%, based on the total weight of the building material dry formulations.
- the dry building material formulations contain fast-setting cement, such as aluminate cement, and also one or more hydraulically setting binders other than fast-setting cement, in particular Portland cements. Fast-setting cement, in particular in combination with other hydraulically setting binders, is particularly advantageous for solving the problem according to the invention.
- the dry building material formulations are based preferably on 0 to 25 wt.%, particularly preferably 1 to 20 wt.% and most preferably 5 to 15 wt.% of fast-setting cement, based on the total weight of the dry building material formulations.
- the dry building material formulations are based preferably on 1 to 40 wt.%, particularly preferably 3 to 25 wt.% and most preferably 5 to 15 wt.% of fast-setting cement, based on the total weight of the hydraulically setting binders used.
- Preferred dry building material formulations contain one or more retarders, particularly if they also contain quick-setting cement.
- Retarders are preferably selected from the group comprising saccharides, hydroxy compounds with 1 to 25 carbon atoms, carboxylic acid compounds with 1 to 25 carbon atoms or their salts, hydroxycarboxylic acid compounds with 1 to 25 carbon atoms or their salts, phosphonic acids or their salts and phosphoric acids or their salts.
- Preferred salts are alkali, alkaline earth or ammonium salts, such as sodium, potassium, magnesium, calcium or ammonia salts.
- suitable carboxylic acid compounds are oxalic acid, tartaric acid, gluconic acid, heptonic acid, gallic acid, citric acid, succinic acid, sebacic acid, salicylic acid, pimelic acid, hematic acid or malic acid. Tartaric acid, gluconic acid and citric acid are preferred.
- suitable hydroxy compounds are pentaerythritol, sorbitol, sucrose, glucose, fructose or disaccharides such as sucrose. are fructose and sucrose (cane sugar).
- suitable phosphonic acids or phosphoric acids or their salts are tetrasodium and tetrapotassium pyrophosphate, sodium hexametaphosphate (Graham's salt).
- Preferred retarders are hydroxycarboxylic acid compounds, phosphonic acids or phosphoric acids, or their respective salts. Most preferred retarders are gluconic acid, tartaric acid and citric acid, or their respective salts.
- the dry building material formulations preferably contain 0.01 to 5 wt.%, particularly preferably 0.05 to 1 wt.% and most preferably 0.1 to 0.5 wt.% retarder, based on the total weight of the dry building material formulations.
- the dry building material formulations can also contain one or more thickeners, for example polysaccharides such as cellulose ethers and modified cellulose ethers, cellulose esters, starch ethers, guar gum, xanthan gum, polycarboxylic acids such as polyacrylic acid and its partial esters, casein and associative thickeners.
- Preferred cellulose ethers are methyl cellulose ethers.
- the thickeners are generally different from the water-insoluble cellulose fiber gels according to the invention. Any thickeners are generally present separately from the water-insoluble cellulose fiber gels according to the invention.
- the thickeners have molecular weights of preferably > 4000 g/mol, particularly preferably > 10000 g/mol and most preferably > 20000 g/mol.
- the building material dry formulations are based preferably on ⁇ 5 wt.%, particularly preferably 0.1 to 3 wt.% and most preferably 0.3 to 1 wt.% of thickeners, based on the total weight of the building material dry formulations.
- fillers are quartz sand, quartz flour, calcium carbonate, dolomite, clay, chalk, hydrated lime, talc or mica, or lightweight fillers such as pumice, foam glass, aerated concrete, perlite, vermiculite, carbon nanotubes (CNT). Quartz sand, quartz flour, calcium carbonate, chalk are preferred. or white lime hydrate. Fillers have a diameter of preferably > 100 pm, in particular > 1 mm.
- the dry building material formulations preferably contain ⁇ 5% by weight and particularly preferably ⁇ 1% by weight of fillers, based on the total weight of the dry building material formulations. Most preferably, no filler is added to the dry building material formulations. Most preferably, the dry building material formulations contain no filler.
- additives for dry building material formulations include, for example, setting accelerators, fibers, hydrophobic agents, preservatives, film-forming aids, dispersants, foam stabilizers, air-entraining agents, defoamers and flame retardants (e.g. aluminum hydroxide).
- setting accelerators for example, setting accelerators, fibers, hydrophobic agents, preservatives, film-forming aids, dispersants, foam stabilizers, air-entraining agents, defoamers and flame retardants (e.g. aluminum hydroxide).
- additives do not include water-insoluble cellulose fiber gels according to the invention.
- fibers are natural organic fibers, in particular cotton, hemp, jute, flax, wood, cellulose, viscose, leather or sisal fibers; synthetic organic fibers, in particular viscose fibers, polyamide fibers, polyester fibers, polyacrylonitrile fibers, Dralon fibers, polyethylene fibers, polypropylene fibers, polyvinyl alcohol fibers or aramid fibers; inorganic fibers, in particular glass fibers, carbon fibers, mineral wool fibers or metal fibers.
- the fibers have a length of preferably 0.1 pm to 16 mm, preferably 0.5 pm to 1 mm, particularly preferably 1 pm to 500 pm.
- the fibers have a fiber diameter of preferably ⁇ 10 pm.
- Fibers are generally not in the form of a gel in water. Fibers preferably do not swell in water. Fibers behave like a filler in the fresh mortars according to the invention. The fibers are generally different from the water-insoluble cellulose fiber gels according to the invention.
- the dry building material formulations preferably do not contain any fibers.
- setting accelerators are aluminum compounds, silicates, (earth) alkali hydroxides, nitrates, nitrites, sulfates, borates or carboxylic acids.
- Preferred setting accelerators are aluminum salts, aluminates, alkali silicates such as water glass, alkali formates, potassium hydroxide or calcium hydroxide (Ca(OH)2).
- the dry building material formulations preferably do not contain any setting accelerators.
- the additives can be used in the usual amounts, for example 0 to 25 wt.%, preferably 0.05 to 15 wt.% and most preferably 0.1 to 10 wt.%, based on the total weight of the building material dry formulations.
- the dry building material formulations generally contain preferably 0.5 to 30% by weight, more preferably 1 to 25% by weight, even more preferably 2 to 20% by weight, particularly preferably 3 to 15% by weight and most preferably 4 to 10% by weight of polymers of ethylenically unsaturated monomers in the form of water-redispersible powders (polymer powders), in each case based on the total weight of the dry building material formulations.
- the polymer powders also contribute to achieving the object according to the invention, in particular with regard to the solid mortar properties.
- Suitable polymers of ethylenically unsaturated monomers are, for example, those based on one or more monomers from the group comprising vinyl esters, (meth)acrylic acid esters, vinyl aromatics, olefins, 1,3-dienes and vinyl halides and optionally further monomers copolymerizable therewith.
- the polymers are preferably not crosslinked.
- Suitable vinyl esters are those of carboxylic acids having 1 to 15 C 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 a-branched monocarboxylic acids having 9 to 11 C atoms, for example VeoVa9 R or VeoVal0 R (trade names of the company Resolution). Vinyl acetate is particularly preferred. Suitable monomers from the group of acrylic acid esters or methacrylic acid esters are esters of unbranched or branched alcohols with 1 to 15 C atoms.
- Preferred methacrylic acid esters or acrylic acid esters 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.
- Methyl acrylate, methyl methacrylate, n-butyl acrylate, t-butyl acrylate and 2-ethylhexyl acrylate are particularly preferred.
- Preferred vinylaromatics are styrene, methylstyrene and vinyltoluene.
- the preferred vinyl halide is vinyl chloride.
- the preferred olefins are ethylene, propylene and the preferred dienes are 1,3-butadiene and isoprene.
- auxiliary monomers can be copolymerized.
- auxiliary monomers are ethylenically unsaturated mono- and dicarboxylic acids, preferably acrylic acid, methacrylic acid, fumaric acid and maleic acid; ethylenically unsaturated carboxamides and nitriles, preferably acrylamide and acrylonitrile; mono- and diesters of fumaric acid and maleic acid, such as the diethyl and diisopropyl esters and maleic anhydride; ethylenically unsaturated sulfonic acids or their salts, preferably vinylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid.
- pre-crosslinking comonomers such as polyethylenically unsaturated comonomers, for example diallyl phthalate, divinyl adipate, diallyl maleate, allyl methacrylate or triallyl cyanurate, or post-crosslinking comonomers, for example acrylamidoglycolic acid (AGA), methylacrylamidoglycolic acid methyl ester (MAGME), N-methylolacrylamide (NMA), N-methylolmethacrylamide, N-methylolallylcarbamate, alkyl ethers such as isobutoxy ether or esters of N-methylolacrylamide, N-methylolmethacrylamide and N-methylolallylcarbamate.
- AGA acrylamidoglycolic acid
- MAGME methylacrylamidoglycolic acid methyl ester
- NMA N-methylolacrylamide
- NMA N-methylolmethacrylamide
- alkyl ethers such as is
- Epoxy-functional comonomers such as glycidyl methacrylate and glycidyl acrylate are also suitable. Further examples are silicon-functional comonomers such as acryloxypropyltri(alkoxy)- and methacryloxypropyltri(alkoxy)-silanes, vinyltrialkoxysilanes and vinylmethyldialkoxysilanes, where ethoxy and ethoxypropylene glycol ether residues may be present as alkoxy groups.
- monomers with hydroxy or CO groups for example methacrylic acid and acrylic acid hydroxyalkyl esters such as hydroxyethyl, hydroxypropyl or hydroxybutyl acrylate or methacrylate, and 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 in such a way that a glass transition temperature Tg of -25°C to +25°C, preferably -10°C to +10°C, particularly 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 (DSC).
- Tgn glass transition temperature in Kelvin of the homopolymer of the monomer n. Tg values for homopolymers are listed in Polymer Handbook 2nd Edition, J. Wiley & Sons, New York (1975).
- copolymers of vinyl acetate with 1 to 50% by weight of ethylene Preference is given to copolymers of vinyl acetate with 1 to 50% by weight 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 with 1 to 12 C atoms in the carboxylic acid residue, such as vinyl propionate, vinyl laurate, vinyl esters of alpha-branched carboxylic acids with 9 to 13 C atoms, such as VeoVa9, VeoValO, VeoVall; copolymers of vinyl acetate, 1 to 50% by weight of ethylene and preferably 1 to 60% by weight of (meth)acrylic esters of unbranched or branched alcohols with 1 to 15 C atoms, in particular n-butyl acrylate or 2-ethylhexyl acrylate; and copolymers with 30 to 75 wt.% vinyl acetate, 1 to 30 w
- (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-acrylic acid ester copolymers with one or more monomers from the group methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate; vinyl acetate-acrylic acid ester copolymers with one or more monomers from the group methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate and optionally ethylene; styrene-1,3-butadiene copolymers; where the polymers may also contain the auxiliary mono
- copolymers with vinyl acetate and 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 a-branched monocarboxylic acids with 9 to 11 carbon atoms, or copolymers with 30 to 75% by weight of vinyl acetate, 1 to 30% by weight of vinyl laurate or vinyl ester of an alpha-branched carboxylic acid with 9 to 11 carbon atoms, and 1 to 30% by weight of (meth)acrylic acid esters of unbranched or branched alcohols with 1 to 15 carbon atoms, which also contain 1 to 40% by weight of ethylene, or copolymers with vinyl acetate, 5 to 50% by weight of ethylene and 1 to 60% by weight of vinyl chloride.
- the polymers are generally produced in an aqueous medium and preferably by the suspension or, in particular, by the emulsion polymerization process - as described, for example, in DE-A 102008043988.
- the polymers are obtained in the form of aqueous dispersions.
- the common emulsifiers and/or preferably protective colloids can be used in the polymerization, as described in DE-A 102008043988. Polymers in the form of protective colloid-stabilized aqueous dispersions are therefore preferred.
- the protective colloids can be anionic or, preferably, cationic or nonionic. Combinations of cationic and nonionic protective colloids are also preferred.
- Preferred nonionic protective colloids are polyvinyl alcohols.
- Preferred cationic protective colloids are polymers that carry one or more cationic charges, as described, for example, in EW Flick, Water Soluble Resins - an Industrial Guide, Noyes Publications, Park Ridge, NJ, 1991.
- Preferred protective colloids are polyvinyl alcohols, in particular partially saponified or fully saponified polyvinyl alcohols with a degree of hydrolysis of 80 to 100 mol%. Partially saponified polyvinyl alcohols with a degree of hydrolysis of 80 to 94 mol% and a Höppler viscosity in 4% aqueous solution of 1 to 30 mPas (Höppler method at 20°C, DIN 53015) are particularly preferred.
- the protective colloids mentioned are accessible by means of processes known to the person skilled in the art and are generally added in a total amount of 1 to 20% by weight, based on the total weight of the monomers, during polymerization.
- the polymers in the form of aqueous dispersions can be converted into corresponding water-redispersible powders, as described for example in DE-A 102008043988.
- a drying aid is generally used in a total amount of 3 to 30% by weight, preferably 5 to 20% by weight, based on the polymeric constituents of the dispersion.
- the aforementioned polyvinyl alcohols are preferred as drying aids.
- Polymers in the form of protective colloid-stabilized, water-redispersible powders are therefore preferred.
- the dispersions can be dried, for example, by means of fluidized bed drying, freeze drying or spray drying. The dispersions are preferably spray dried.
- Spray drying is carried out in conventional spray drying systems, whereby atomization can be carried out using single-, two- or multi-component nozzles or with a rotating disk.
- the outlet temperature is generally selected in the range from 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.
- the viscosity of the feed 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 preferably 30 to 75 wt.% and particularly preferably 50 to 60 wt.%.
- the polymer powder obtained can be equipped with one or more antiblocking agents (anticaking agents), preferably 1 to 30% by weight, based on the total weight of polymer components.
- antiblocking agents are Ca or Mg carbonate, talc, gypsum, silica, kaolins such as metakaolin, silicates with particle sizes preferably in the range of 10 nm to 10 pm.
- Antiblocking agents are generally not fillers in the sense of the present invention. Antiblocking agents are generally different from the fillers mentioned above. The fillers mentioned above preferably do not include antiblocking agents.
- the invention further relates to processes for producing dry building material formulations by mixing one or more hydraulically setting binders, one or more polymers of ethylenically unsaturated monomers in the form of water-redispersible powders and optionally one or more additives, characterized in that one or more water-insoluble cellulose fiber gels in the form of dispersible powders and optionally fillers are additionally added, with the proviso that the proportion of fillers added is ⁇ 9% by weight, based on the total weight of the dry building material formulations.
- dry building material formulations are not tied to any particular procedure or mixing device.
- dry building material formulations can be obtained by mixing and homogenizing the individual components of the building material formulations in conventional powder mixing devices.
- the dry building material formulations according to the invention are therefore in the form of dry mixtures.
- the dry building material formulations are generally produced without the addition of water or in the absence of water.
- the amount of water required for the use of the dry building material formulations is added in the generally known amounts before their application.
- the application mixture can be mixed and homogenized, for example, using mortar or concrete mixers or plastering machines or stirrers.
- premixes are first prepared from at least two components of the dry building material formulations, which are then mixed with one or more other components of the dry building material formulations.
- Preferred premixes contain one or more water-insoluble cellulose fiber gels in the form of dispersible powders and one or more polymers in the form of water-redispersible powders.
- Another object of the invention are polymer compositions obtainable by mixing one or more water-insoluble cellulose fiber gels and one or more polymers of ethylenically unsaturated monomers.
- the object of the invention can be achieved in a particularly advantageous manner.
- the invention further relates to processes for producing the polymer compositions, characterized in that one or more polymers of ethylenically unsaturated monomers and one or more water-insoluble cellulose fiber gels are mixed.
- the polymer compositions are preferably in the form of aqueous dispersions and particularly preferably in the form of water-redispersible powders. It is preferred that the water-insoluble cellulose fiber gels are present or introduced in the form of aqueous dispersions and in particular in the form of dispersible powders. It is also preferred that the polymers are present or introduced in the form of aqueous dispersions and in particular in the form of water-redispersible powders.
- the polymer compositions preferably contain 10 to 90 wt. %, particularly preferably 20 to 70 wt. %, and most preferably 30 to 50 wt. % of water-insoluble cellulose fiber gels, based on the dry weight of the polymers of ethylenically unsaturated monomers.
- the polymer compositions preferably contain > 50 wt.%, particularly preferably > 80 wt.% and even more preferably > 90 wt.% of water-insoluble cellulose fiber gels and Polymers, based on the dry weight of the polymer compositions.
- the polymer compositions can contain one or more additives, such as the above-mentioned thickeners, retarders, setting accelerators, fibers, hydrophobic agents, preservatives, film-forming aids, dispersants, foam stabilizers, air-entraining agents, defoamers and flame retardants (e.g. aluminum hydroxide).
- additives do not comprise water-insoluble cellulose fiber gels according to the invention. Preferably, no fibers are included.
- the mixing of the polymers of ethylenically unsaturated monomers and the water-insoluble cellulose fiber gels is not tied to any particular procedure or device and can be carried out in the usual mixing containers.
- polymers in the form of aqueous dispersions are converted into water-redispersible powders by drying, and then water-insoluble cellulose fiber gels are added.
- the addition of the water-insoluble cellulose fiber gels is preferably carried out after the polymer dispersions have been dried.
- the water-insoluble cellulose fiber gels can be metered into the spray dryer after the polymer dispersion has been dried, if necessary together with other additives that can be mixed in in the conventional way, such as antiblocking agents, defoamers, foam stabilizers, fillers, dyes, biocides, thickeners.
- additives such as antiblocking agents, defoamers, foam stabilizers, fillers, dyes, biocides, thickeners.
- Another object of the invention are fresh mortars based on the building material dry formulations according to the invention and water.
- the amount of water preferably includes any water introduced by polymers of ethylenically unsaturated monomers in the form of aqueous dispersions.
- 25 to 90 wt.%, particularly preferably 40 to 80 wt.% and most preferably 60 to 70 wt.% of dry building material formulations are used, based on the total weight of the fresh mortar.
- the fresh mortars are based on 0.1 to 20 wt.%, more preferably 0.5 to 10 wt.%, particularly preferably 1 to 8 wt.% and most preferably 3.5 to 6 wt.% of polymers of ethylenically unsaturated monomers, in particular in the form of water-redispersible powders, based on the total weight of the fresh mortars.
- the fresh mortar has a density of preferably 0.8 to 2.0 g/cm 3 , particularly preferably 1.0 to 1.8 g/cm 3 and most preferably 1.3 to 1.7 g/cm 3 (determination method: pressure equalization method according to DIN 18555 Part 2).
- the fresh mortar has an air pore content of preferably 1 to 20%, more preferably 5 to 18%, particularly preferably 10 to 17% and most preferably 12 to 16% (determination method: pressure equalization method according to DIN 18555 Part 2).
- the mixing of the dry building material formulations with water is not tied to any particular procedure or mixing device and can be carried out in a conventional manner.
- 2K systems i.e. two-component systems
- Particularly preferred are Only components b1) and b2) are mixed. Most preferably, no further components, in particular no component b3), are added.
- the water-insoluble cellulose fiber gels are preferably contained in components bl) and/or b2), in particular exclusively in component bl).
- Water is preferably contained in components bl) and/or b2), in particular exclusively in component b2).
- fresh mortar can be obtained by mixing and homogenizing the individual components using mixing devices, for example using mortar, concrete mixers or plastering machines or stirrers.
- the fresh mortar is applied immediately after its preparation in a conventional manner, in particular without any further processing step.
- Another object of the invention is solid mortar obtainable by setting the fresh mortar.
- the hardened mortar After 28 days in standard climate (23°C, 50% relative humidity), the hardened mortar has a dry bulk density of preferably 600 to 1300 g/L, more preferably 700 to 1200 g/L, particularly preferably 800 to 1100 g/L and most preferably 900 to 1000 g/L (determination method: based on EN 1015-6).
- the dry building material formulations, fresh mortar or hardened mortar are particularly suitable for the production of construction adhesives, leveling compounds, plasters, fillers, joint mortars, sealing slurries or thermal insulation composite systems.
- construction adhesives tile adhesives, skim coats or full thermal insulation adhesives or embedding mortars or plasters in general are preferred areas of application for the dispersion powder compositions.
- Preferred areas of application are leveling compounds, particularly preferred leveling compounds are self-leveling floor fillers and screeds.
- fillers can be partially or even completely dispensed with in mortars.
- the fresh mortar is supple, has an advantageous flow, is low in stickiness and has a particularly long open time, which is an important processing property for the user.
- the hardened mortars are characterized by advantageous mechanical properties, in particular they have very good adhesive tensile strengths, especially after storage in standard climates or after freeze-thaw cycles. But good values are also achieved after storage in water or heat.
- the hardened mortars therefore also meet the requirements of the C2 standard.
- the hardened mortars also achieve high tear strengths, which also meet the S2 standard. All of this can also be achieved with a significantly reduced polymer content compared to formulations containing fillers.
- mortars according to the invention have a lower density than conventional mortars with usual filler quantities, which makes it easier to process the fresh mortar, for example.
- the mortars are very economical when using the dry components.
- Water can act in the mortars according to the invention, for example, as a temporary filler, which is at least partially released again as the fresh mortar sets.
- the dry building material formulations of the (comparative) examples were prepared from the recipes given in Table 1 by intensive mixing at 23°C and 50% relative humidity.
- Tylose (trade name of SE Tylose): methyl cellulose
- VINNAPAS 5010 N (trade name of Wacker Chemie): water-redispersible, polyvinyl alcohol-stabilized vinyl acetate-ethylene copolymer;
- the open time of the fresh mortars of the (comparative) examples was determined according to EN 12004 (test standards EN 1348 and EN 1346) 30 minutes after mixing with water.
- Example 1 according to the invention shows a significant improvement in the open time compared to comparative examples 1 and 2.
- the fresh mortar of comparative example 3 had a tough consistency, was not spreadable, could not be filled and therefore could not be processed.
- the bond tensile strength of the hardened mortars of the (comparative) examples was determined according to EN 12004.
- Table 4 Tensile strength of the hardened mortars : a) Testing after 28 days of standard climate storage in accordance with EN 12004; b) Testing after 7 days of standard climate storage and 21 days of water storage in accordance with EN 12004; c) Testing after 14 days of standard climate storage, 14 days of heat storage at 70 ° C and after 1 day of standard climate storage in accordance with EN 12004; d) Testing after freeze-thaw storage in accordance with EN 12004.
- the hardened mortar of example 1 showed significantly better adhesive tensile strengths after standard storage and after freeze-thaw cycles than comparative example 1 and thus exceeds the requirements for a C2 adhesive.
- Example 1 also showed significantly improved adhesive tensile strength after freeze-thaw cycles compared to Comparative Example 2, even though twice the amount of polymer powder was used in Comparative Example 2 than in Example 1.
- the adhesives according to the invention therefore also exceed the requirements for S2 adhesives.
- the tensile strength was determined for the hardened mortars of the (comparative) examples according to EN 12004. The measurement error of this measurement is 0.3. The results are shown in Table 5.
- the mortar of Example 1 contained the same amount of polymer as Comparative Example 1 but showed much better tear strength.
- Example 1 and comparative example 2 gave comparable values within the measurement accuracy, although in In Comparative Example 2, approximately twice the amount of polymer was used as in Example 1.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2023/059827 WO2024213265A1 (de) | 2023-04-14 | 2023-04-14 | Füllstoffarme oder füllstofffreie baustoffformulierungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4695210A1 true EP4695210A1 (de) | 2026-02-18 |
Family
ID=86286137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23720791.5A Pending EP4695210A1 (de) | 2023-04-14 | 2023-04-14 | Füllstoffarme oder füllstofffreie baustoffformulierungen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4695210A1 (de) |
| CN (1) | CN120882674A (de) |
| WO (1) | WO2024213265A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007024964A1 (de) | 2007-05-30 | 2008-12-04 | Wacker Polymer Systems Gmbh & Co. Kg | Herstellung von Festmassen auf Basis von hydraulisch abbindenden Beschichtungsmitteln |
| DE102008043988A1 (de) | 2008-11-21 | 2010-05-27 | Wacker Chemie Ag | Faserhaltige Mörtelzusammensetzung |
| DE102009000142A1 (de) | 2009-01-12 | 2010-07-15 | Wacker Chemie Ag | Faserhaltige Betonzusammensetzungen |
| DE102009026892A1 (de) * | 2009-06-10 | 2010-12-16 | Wacker Chemie Ag | Verfahren zur Herstellung von Faser-verstärkten Baustoffbeschichtungen |
| FI123503B (fi) * | 2009-10-02 | 2013-06-14 | Upm Kymmene Corp | Materiaali käytettäväksi betonin lisäaineena |
| BR112012031993B1 (pt) * | 2010-06-29 | 2019-12-03 | Dow Global Technologies Llc | composição ligante inorgânica base água, pacote de aditivos para composições ligantes inorgânicas base água e método para melhorar a estabilidade no congelamento-descongelamento |
| CN101906233B (zh) * | 2010-07-26 | 2012-07-11 | 武汉大学 | 纤维素凝胶/丙烯酸系聚合物组合物 |
| DE102010039319A1 (de) | 2010-08-13 | 2012-02-16 | Wacker Chemie Ag | Beschichtungsmittel zur Herstellung von dauerflexiblen Beschichtungen |
-
2023
- 2023-04-14 CN CN202380095721.2A patent/CN120882674A/zh active Pending
- 2023-04-14 EP EP23720791.5A patent/EP4695210A1/de active Pending
- 2023-04-14 WO PCT/EP2023/059827 patent/WO2024213265A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN120882674A (zh) | 2025-10-31 |
| WO2024213265A1 (de) | 2024-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1262465B1 (de) | Verwendung von Mischpolymerisaten von Vinylester-, (Meth)acrylsäureester- und gegebenenfalls Ethylen-Comonomeren in Baustoffen | |
| EP1238958B1 (de) | Trockenmörtel mit verbesserten Verarbeitungseigenschaften | |
| WO2010057888A1 (de) | Faserhaltige trockenmörtelzusammensetzung | |
| EP2764044B1 (de) | Polymerpulver enthaltende baustofftrockenformulierungen | |
| EP2432748B1 (de) | Faserhaltige pastöse baustoffmassen | |
| DE102011078531A1 (de) | Gips-haltige Baustoffmassen | |
| DE102011003268A1 (de) | Staubreduzierungsmittel für Trockenmischungen von Baustoffformulierungen | |
| EP2619152B1 (de) | Beschichtungsmittel zur herstellung von dauerflexiblen beschichtungen | |
| EP4157804A1 (de) | Verfahren zur herstellung von in wasser redispergierbaren polymerpulvern für baustofftrockenformulierungen | |
| EP1394193A1 (de) | Redispergierbare Dispersionspulver-Zusammensetzung, Verfahren zu deren Herstellung, sowie deren Verwendung | |
| EP1725507A2 (de) | Verwendung von in wasser redispergierbaren polymerpulver-zusammensetzungen in lehmbaustoffen | |
| DE102010041291A1 (de) | Beschichtungsmittel zur Herstellung von Wasser führenden Infrastrukturbeschichtungen | |
| DE10109841C2 (de) | Trockenmörtel mit verbesserten Verarbeitungseigenschaften, Verfahren zu deren Herstellung, sowie deren Verwendung | |
| EP3262116B1 (de) | Polymermischungen in form von wässrigen dispersionen oder in wasser redispergierbaren pulvern | |
| EP2695866B1 (de) | Modifiziertes rheologieadditiv | |
| EP2150509A2 (de) | Herstellung von festmassen auf basis von hydraulisch abbindenden beschichtungsmitteln | |
| WO2024213265A1 (de) | Füllstoffarme oder füllstofffreie baustoffformulierungen | |
| WO2012045591A1 (de) | Verwendung von polypropylenoxid oder ethylenoxid-propylenoxid-mischpolymerisat als haftungsverbessernden zusatz in klebe- und armierungsmörtel | |
| EP4301713B1 (de) | Verwendung von schaummörtel als klebemittel für bodenbeläge | |
| WO2020001791A1 (de) | Trockenmörtelzusammensetzungen für wärmedämmverbundsysteme | |
| EP4584303B1 (de) | In wasser redispergierbare polymerpulver für baustofftrockenformulierungen | |
| WO2020048603A1 (de) | In wasser redispergierbare polymerpulver-zusammensetzungen | |
| WO2017140781A1 (de) | Stabilisatoren zur verbesserung der lagerstabilität von polymerpulver enthaltenden baustofftrockenformulierungen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20251010 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20260612 |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |