Aqueous treatment mass for building walls, ceilings or floors
Abstract
This record has no abstract on file.
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10 yearsto projected expiry
Projected expiry 30 September 2036, counted from filing; an application has no term until it is granted.
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19 claims: 11 independent, 8 dependent
- 1Zastrzeżenia patentowe 1. Wodna masa do obróbki, w szczególności dyspersyjna masa do obróbki ścian, sufitów lub podłóg budynków, w szczególności masa podkładowa, zawierająca co najmniej jedno spoiwo nieorganiczne i/lub organiczne, co najmniej jeden zagęszczacz, w szczególności zagęszczacz poliakrylanowy, co najmniej jeden dodatek zwilżający podłoże i przy czym dodatek zwilżający podłoże zawiera co najmniej jeden kopolimer polieterosiloksanowy i/lub co najmniej jeden alkoksylowany alkohol drugorzędowy i/lub co najmniej jeden alkoksylowany liniowy lub rozgałęziony alkohol C9-C15 i stanowi substancję amfifilową, która jest zdolna do obniżania napięcia powierzchniowego ciekłych faz wodnych.
- 2Wodna masa do obróbki według Zastrzeżenia 1, ponadto zawierająca co najmniej jeden, w szczególności niejonowy środek powierzchniowo czynny, zwilżający i/lub dyspergujący, w szczególności wybrany z grupy obejmującej poliakrylany sodu lub amonu, poliakrylany potasu, polifosforany, kopolimery blokowe EO/PO, korzystnie kopolimery blokowe etylenodiamina-EO/PO, i dowolne ich mieszaniny.
- 3Wodna masa do obróbki według Zastrzeżenia 1 albo 2, znamienna tym, że zagęszczacz jest wybrany z grupy obejmującej zagęszczacze poliakrylanowe, w szczególności zagęszczacze poliakrylanowe HASE, zagęszczacze poliuretanowe, modyfikowane zagęszczacze polimocznikowe, zagęszczacze polisacharydowe, na przykład zagęszczacze celulozowe, w szczególności oparte na hydroksyetylocelulozie i/lub metylocelulozie, zagęszczacze oparte na poli(alkoholu winylowym), zagęszczacze polieteropoliolowe i modyfikowane krzemiany warstwowe, w szczególności organicznie modyfikowane krzemiany warstwowe i dowolne ich mieszaniny.
- 4Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, znamienna tym, że spoiwo organiczne stanowi dyspersję wodną opartą na kopolimerach i/lub homopolimerach zawierających akrylany, metakrylany, etylen, octan winylu i/lub styren, zwłaszcza opartą na czystych akrylanach i/lub opartą na kopolimerach, zawierających akrylany, metakrylany i styren, i/lub że spoiwo nieorganiczne jest oparte na układzie wodnym zawierającym szkło wodne i/lub zol krzemionkowy.
- 5Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, znamienna tym, że dodatki są wybrane z grupy obejmującej środki przeciwpieniące, środki nawilżające, stabilizatory, w szczególności stabilizatory pH, środki zobojętniające, środki biobójcze, w szczególności środki konserwujące, i dowolne ich mieszaniny.
- 6Wodna masa do obróbki według dowolnego z poprzedzających zastrzeżeń, znamienna tym, że 11P45142PL00 - 12 EP 3 301 138 B1 dodatek zwilżający podłoże obejmuje co najmniej jeden, w szczególności niejonowy, etoksylowany i/lub butoksylowany alkohol drugorzędowy i/lub co najmniej jeden etoksylowany i/lub butoksylowany liniowy lub rozgałęziony alkohol C9-C15.
- 7Wodna masa do obróbki według Zastrzeżenia 6, znamienna tym, że wspomniany co najmniej jeden alkoksylowany alkohol drugorzędowy zawiera co najmniej jeden etoksylowany i/lub butoksylowany drugorzędowy alkohol C11-C15.
- 8Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, zawierająca 60 do 96% wag., korzystnie 80 do 92% wag. wody, 0,5 do 14% wag., korzystnie 5 do 12% wag., szczególnie korzystnie 7 do 10% wag. spoiwa, w szczególności spoiwa organicznego, (zawartość składników stałych), 0,1 do 4% wag., korzystnie 0,2 do 3% wag. i szczególnie korzystnie 0,3 do 2% wag. zagęszczacza (zawartość składników stałych) oraz 0,1 do 4% wag., korzystnie 0,2 do 2,5% wag. i szczególnie korzystnie 0,4 do 1,5% wag. dodatków zwilżających podłoże (zawartość składników stałych), 0 do 3, 0% wag., korzystnie 0,1 do 2% wag., i szczególnie korzystnie 0,5 do 1% wag. środka zwilżającego i/lub dyspergującego (zawartość składników stałych lub zawartość składników niewodnych), przy czym składniki tworzące wodną masę do obróbki zawsze dodają się do 100% wag.
- 9Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, znamienna tym, że wodna masa do obróbki, zwłaszcza dyspersyjna masa do obróbki, ma krzywą płynięcia utworzoną przez naniesione na osi odciętych szybkości ścinania i naniesione na osi rzędnych odpowiadające im wartości naprężenia stycznego, której średnie nachylenie wyznaczone w zakresie szybkości ścinania od 20 do 100 s-1, mieści się w zakresie od 0,010 do 0,10, korzystnie w zakresie od 0,020 do 0,080 i szczególnie korzystnie w zakresie od 0,030 do 0,050 Pa-s, i/lub której średnie nachylenie wyznaczone w zakresie szybkości ścinania od 20 do 200 s-1, mieści się w zakresie od 0,010 do 0,10, korzystnie w zakresie od 0,020 do 0,080 i szczególnie korzystnie w zakresie od 0,025 do 0,070 Pa-s, i/lub której średnie nachylenie wyznaczone w zakresie szybkości ścinania od 20 do 400 s-1 mieści się w zakresie od 0,010 do 0,080, korzystnie w zakresie od 0,012 do 0,060 i szczególnie korzystnie w zakresie od 0,014 do 0,040 Pa-s, i/lub której średnie nachylenie wyznaczone w zakresie szybkości ścinania od 1200 do 1500 s-1 jest mniejsze lub równe 0,025, korzystnie mniejsze lub równe 0,020 i szczególnie korzystnie mniejsze lub równe 0,015 Pa-s, i/lub że maksymalne naprężenie styczne Tmax wyznaczone dla masy do obróbki, w szczególności dyspersyjnej masy do obróbki, lub że naprężenie styczne τ wyznaczone przy szybkości ścinania 1500 s-1 mieści się w zakresie od 15 do 80 Pa, korzystnie 20 do 60 Pa, szczególnie korzystnie w zakresie od 25 do 50 Pa.
- 10Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, znamienna tym, że stanowi ona lub tworzy podkład lub jest jego składnikiem.
- 1111P45142PL00 - 13 EP 3 301 138 B1 11. Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, znamienna tym, że ma ona wartość pH w zakresie od 8,0 do 11,5, korzystnie w zakresie od 8,5 do 11,5, a korzystniej w zakresie od 9,0 do 11,50 lub jest ustawiona na wartość pH w zakresie od 8,0 do 11,5, korzystnie w zakresie od 8,5 do 11,5, a korzystniej w zakresie od 9,0 do 11,5.
- 12Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, znamienna tym, że nie zawiera ona środków konserwujących stosowanych w opakowaniach zamkniętych, korzystnie nie zawiera środków konserwujących stosowanych w opakowaniach zamkniętych i w powłokach, korzystniej nie zawiera środków konserwujących.
- 13Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, w szczególności według dowolnego z zastrzeżeń od 1 do 11, znamienna tym, że zawiera ona środki konserwujące stosowane w powłokach, korzystnie zawiera środki konserwujące stosowane w powłokach i nie zawiera środków konserwujących stosowanych w opakowaniach zamkniętych, korzystniej zawiera środki konserwujące.
- 14Wodna masa do obróbki według dowolnego z poprzedzających Zastrzeżeń, zawierająca ponadto wypełniacze i/lub środki barwiące, w szczególności pigmenty, lub niezawierająca wypełniaczy i/lub środków barwiących, korzystnie pigmentów.
- 15Powłoka lub podkład otrzymany lub możliwy do otrzymania przy użyciu wodnej masy do obróbki, zwłaszcza dyspersyjnej masy do obróbki według dowolnego z poprzedzających Zastrzeżeń.
- 16Podłoże pokryte powłoką, zwłaszcza pokryte powłoką podłoże mineralne, otrzymane w wyniku obróbki podłoża, zwłaszcza podłoża mineralnego, wodną masą do obróbki według dowolnego z Zastrzeżeń od 1 do 14, i naniesienie na obrabiane podłoże powłoki malarskiej.
- 17Zastosowanie masy do obróbki, zwłaszcza dyspersyjnej masy do obróbki, według dowolnego z zastrzeżeń od 1 do 14, do nakładania na powierzchnię wałkiem malarskim, szczotką, układem natryskowym lub pędzlem ze zmniejszoną lub w dużym stopniu ograniczoną ilością rozprysków i/lub mgiełki lub bez rozprysków i/lub mgiełki.
- 18Zastosowanie masy do obróbki, zwłaszcza dyspersyjnej masy do obróbki, według dowolnego z zastrzeżeń od 1 do 14, do ujednolicania podłoży o nierównomiernej chłonności, zwłaszcza podłoży mineralnych, na zewnątrz i/lub wewnątrz budynków i/lub do ujednolicania przewodności kapilarnej, zwłaszcza mineralnych podłoży na zewnątrz i/lub wewnątrz budynków o zmiennych właściwościach związanych z przewodnictwem kapilarnym i/lub do wzmacniania i/lub poprawy przyczepności na, zwłaszcza mineralnych, podłożach na zewnątrz i/lub wewnątrz budynków i/lub do zapewnienia jednolitego wrażenia barwy powłok malarskich na, zwłaszcza mineralnych, podłożach na zewnątrz i/lub wewnątrz budynków, przy czym podłoża mineralne są w szczególności wybrane z grupy obejmującej powłoki tynkarskie, płyty gipsowe, płyty gipsowo-kartonowe, cegły 11P45142PL00 - 14 EP 3 301 138 B1 niewypalane, podłoża z betonu komórkowego, podłoża betonowe i podłoża z cegieł wapienno-piaskowych.
- 19Zastosowanie masy do obróbki, w szczególności dyspersyjnej masy do obróbki, według któregokolwiek z Zastrzeżeń od 1 do 14, zawierającej co najmniej jeden środek biobójczy, jako wodnego systemu do obróbki renowacyjnej lub do obróbki biobójczej powierzchni budynków, w szczególności zewnętrznych elewacji budynków. DAW SE
Independent claims19
51 paragraphs in 10 sections, as filed
Description [0001] The present invention relates to an aqueous mass for the treatment of walls, ceilings or floors of buildings, in particular an undercoat. The invention further relates to a substrate on which the aqueous treatment compound according to the invention is used and to the use of the aqueous treatment compound according to the invention as a primer. In addition, the invention relates to the use of the aqueous treatment compound according to the invention for improving the adhesion or providing a uniform color impression on paint coatings, especially on mineral substrates, or for strengthening mineral substrates or for uniforming substrates with uneven absorption, especially mineral substrates.
[0002] There has long been a desire to improve the quality of color shades and the stability of color shades of coatings on buildings. This applies to both internal and external coatings. Ideally, the desired properties should be established when applying coatings to a wide variety of substrates, such as cement mortar, concrete or plaster layers. In particular, on non-uniform substrates, which may arise, for example, when transitioning from formerly plastered surfaces to newly plastered areas or in places repaired or corrected by plastering, there is a danger of obtaining a non-uniform color impression after the paint coating has dried.
[0003] Problems of this kind are attempted to be tackled, inter alia, by particularly thick applying paint or applying paint coats two or more times. As a result, the workload, time and costs increase significantly. In addition, with too thickly applied paint coatings, adhesion problems and / or adverse flow effects may occur (keyword: sagging - coating overhang).
[0004] Document EP 2871169 discloses a dispersion mass comprising polymer foam particles, a light filler, fibrous material, an organic binder (binding dispersion) and water.
[0005] Therefore, the object of the present invention was to find a solution to the above-mentioned problems, and in particular to enable a person skilled in the art to obtain, especially as a result of a single application of paint, a uniform paint coating on a variety of non-uniform substrates, in particular also on changing substrates. In particular, the object of the invention was to ensure uniform preparation of the substrate on a variety of non-uniform substrates, in particular also on substrates changing by applying a coating compound, preferably a one-time application of a coating compound.
[0006] Accordingly, an aqueous mass for treatment of walls, ceilings or floors of buildings has been developed, comprising at least one inorganic and / or organic binder, at least one thickener, at least one substrate wetting agent and optionally other additives. The aqueous treatment mass according to the invention is preferably a primer mass or the aqueous treatment mass is a component of the base mass. The water treatment compound according to the invention is particularly suitable for the treatment of mineral substrates, such as concrete substrates, e.g. concrete walls, ceilings or floors, plaster coatings, gypsum plastered surfaces, gypsum boards, gypsum boards, unfired masonry bricks,
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Cellular concrete substrates, sand-lime brick substrates and the like. In order for the aqueous treatment mass according to the invention to show its effectiveness, e.g. in terms of improving the adhesion, color stability of the applied paint coats and improving the quality of the paint coating in coated substrates, it is not necessary for the aqueous treatment mass according to the invention to form a layer coating on the work surface. Rather, it is sufficient if said aqueous treatment mass, preferably close to the surface, penetrates into the treated substrate, in particular a mineral substrate, or penetrates into it. Of course, in an embodiment, the aqueous treatment mass according to the invention can be applied in such a way that after drying on the treated substrate, a coating in the form of a layer will remain, in particular uniform.
[0007] The water content of the aqueous treatment mass of the invention, based on the total weight of said treatment mass, is usually in the range of 60 to 96 wt. In preferred embodiments, the water content is in the range of 80 to 92 wt.
[0008] In a particularly expedient embodiment, the aqueous treatment masses according to the invention further comprise at least one, in particular a nonionic, surfactant, wetting and / or dispersing agent. Particularly suitable wetting and / or dispersing agents can be selected from the group consisting of sodium or ammonium polyacrylates, potassium polyacrylates, polyphosphates, EO / PO block copolymers and any mixtures thereof. Preferably, suitable wetting and / or dispersing agents are based on ethylenediamine-EO / PO block copolymers.
[0009] The wetting and / or dispersing agents included in the aqueous treatment mass of the invention are generally present in an amount in the range of from 0 to 3.0% by weight, preferably in the range of from 0.1 to 2% by weight. , and more preferably in the range of 0.5 to 1% by weight, in each case calculated as the solids content or the non-aqueous content, also called the content of active ingredients. The content of non-aqueous components or the content of active ingredients in the aqueous treatment mass according to the invention is used when the treatment component whose mass fraction is to be determined is not in solid form at room temperature.
[0010] The present invention also includes such aqueous treatment masses which further contain at least one filler and / or at least one coloring agent, in particular pigment. When using the aqueous treatment compositions according to the invention, in particular primers, it is generally not desired to obtain opaque paint coatings. Therefore, the addition of fillers and / or coloring agents such as pigments can be dispensed with completely. As a result, this does not affect the expected benefits. However, in many applications, it has been found advantageous to add small amounts of fillers and / or coloring agents, in particular pigments, to the aqueous treatment compositions of the invention, in particular primers, to make visible to the user those areas that have already been treated with the aqueous treatment compound according to the invention. invention. However, also suitable aqueous treatment compounds according to the invention, in particular primers, which generally do not contain fillers and / or coloring agents, preferably pigments.
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[0011] For the aqueous treatment masses according to the invention, thickeners selected from the group consisting of polyacrylate thickeners, also called acrylate thickeners, in particular HASE polyacrylate thickeners, polyurethane thickeners, modified polyurea thickeners, polysaccharide thickeners, such as cellulose thickeners, in particular those based on hydroxyethyl cellulose and / or methyl cellulose, thickeners based on poly (vinyl alcohol), polyether polyol thickeners and modified layered silicates, in particular organically modified layered silicates and any mixtures thereof. Preferably polyacrylate thickeners are used in this case, with the HASE polyacrylate thickener group being particularly preferred. In this case, they are hydrophobically modified polyacrylate association thickeners.
[0012] Among the acrylate thickeners, so-called HASE (hydrophobically modified alkali soluble emulsion) thickeners are preferred, especially those based on copolymers containing or consisting of methyl methacrylate and / or methacrylic acid and ethyl acrylate. HASE thickeners can be obtained e.g. from methacrylic acid as a hydrophilic monomer, alkyl vinyl ether as a hydrophobic monomer and ethyl acrylate, butyl acrylate and / or methyl methacrylate as another monomer to provide an optimal balance between water sensitivity and water tolerance. HASE crosslinked thickeners can also be used. They usually have limited solubility in water. Particularly convenient acrylate thickeners, especially HASE acrylic thickeners, have a number average molecular weight Mn in the range from 100 to 300 kDa, preferably in the range from 150 to 250 kDa, e.g. in the range from 170 to 200 kDa and / or a weight average molecular weight Mn in the range from 400 to 800 kDa, preferably in the range from 500 to 700 kDa, e.g. in the range from 550 to 650 kDa.
Suitable polysaccharide-based thickeners include, e.g., cellulose, microcrystalline cellulose, cellulose ethers and modified cellulose ethers, in particular hydrophobically modified cellulose ethers, as well as polysaccharides derived from galactomannoses, e.g. polygalactomannose, and also polysaccharides guar gum, xanthan gum and locust bean gum. As examples of modified cellulose ethers, mention may be made of methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, ethyl hydroxyethyl cellulose and sodium carboxymethyl cellulose. As hydrophobically modified cellulose ethers, e.g. reaction products of hydroxyethylcellulose or hydroxypropylcellulose with N-ethyl-N-2-hydroxyethylperfluorooctane sulfonamide glycidyl ether (FC10-HEC) as well as nonionic cellulose ethers with methyl, hydroxyethyl and hydroxypropyl groups and a long chain 10-bonded carbon group with an alkyl chain linker.
[0014] In the simplest case, the polyurethane thickeners are based on the hydrophilic middle block of polyethylene oxide (PEO) units to which, in reaction with diisocyanate and fatty alcohol, two hydrophobic end segments have been attached. Thus, polyurethane thickeners are generally nonionic branched or unbranched block copolymers composed of chains
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Polyethylene oxide, polypropylene oxide chains or poly (ethylene oxide-propylene oxide) chains that are connected by urethane bonds and have 8 to 30, preferably 10 to 24 terminal long chain alkyl or alkylene groups up to 20 carbon atoms or aryl groups or alkylated aryl groups with 6 to 30, preferably 6 to 20 carbon atoms. Typical alkyl groups are, for example, dodecyl or octadecyl groups, a typical alkylene group is, for example, an oleyl group, a typical aryl group is a phenyl group, and a typical alkylated aryl group is, for example, a nonylphenyl group. Suitable polyurethane thickeners are known to the person skilled in the art. The molecular weight of such polyurethane thickeners is usually in the range of 10<sup>4</sup> up to 10<sup>5</sup> g / mol.
[0015] Suitable thickeners based on layered silicates can be selected from the group consisting of smectite, montmorillonite, hectorite and bentonite or mixtures thereof. In addition to conventional, i.e., organically unmodified or non-delaminated layered silicates, organically modified layered silicates can additionally or alternatively be used as thickeners. Organically modified layered silicates are known to the person skilled in the art and are also commercially available. They are so-called stratified layered silicates in which cationic organic compounds occur in the layered structure, i.e. between layers. There is also talk of intercalation compounds. Particularly preferably, such delaminated layered silicates are obtained by modification with alkylammonium or ammonium alcoholate compounds.
[0016] Suitable polyether polyol thickeners are known to the person skilled in the art. For example, Wassrige Siliconharz-Beschichtungssysteme fur Fassaden, Wolfgang Schultze, 2nd edition, pp. 345-347, (ISBN 3-8169-1966-9) can be cited.
[0017] In the aqueous treatment mass according to the invention, the thickeners are preferably present in an amount in the range from 0.1 to 4% by weight, preferably in the range from 0.2 to 3% by weight, and particularly preferably in the range from 0, 3 to 2% by weight, in particular in the range from 0.5 to 1% by weight The abovementioned amounts are always the content of solid or non-aqueous components in the aqueous treatment mass according to the invention.
[0018] If the aqueous treatment mass according to the invention contains an organic binder, it is preferred to use an aqueous dispersion based on homopolymers and / or copolymers containing acrylates, methacrylates, ethylene, vinyl acetate and / or styrene. An aqueous dispersion based on pure acrylates, in particular based on copolymers containing acrylates, methacrylates and styrene, is preferred. If organic binders based on aqueous dispersions are used in the aqueous treatment compositions of the invention, said treatment composition can also be understood or referred to as the dispersion treatment composition.
[0019] In the case of aqueous treatment compositions based on inorganic binders, water systems containing water glass and / or silica sol are generally used.
[0020] Suitable silica sols are known to a person skilled in the art. Silica sols are commercially available in the form of aqueous suspensions of colloidal polysilicic acid molecules. The silica sol is preferably alkaline, and more preferably has a pH greater than 9.
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[0021] As water glasses, basically soda, potassium and lithium water glasses and mixtures thereof are possible. Water glasses are, for example, reaction products of alkali metal carbonates or hydroxides with quartz sand. They are commercially available often in the form of aqueous solutions. In these commercially available aqueous solutions, the water glass solids content is generally 22 wt. Water glass can generally also be used as a powder.
[0022] In the aqueous treatment mass according to the invention, preferably in the form of said treatment mass, the binders are generally present in an amount in the range from 0.5 to 14% by weight. (solids content), calculated on the total mass of said treatment mass. If organic binders are used in the aqueous treatment mass according to the invention, they are preferably present in an amount in the range from 5 to 12% by weight. (solids content), more preferably in the range of from 7 to 10% by weight, based on the total weight of the aqueous mass to be treated. If inorganic binders are used in the aqueous treatment mass according to the invention, their amount is preferably in the range from 0.1 to 15% by weight. (solids content), calculated on the total mass of the aqueous mass to be treated.
[0023] The aqueous treatment systems of the invention may further also contain additives. Appropriate additives are known to a person skilled in the art. For example, preferred additives may be selected from the group consisting of antifoams, wetting agents, stabilizers, in particular pH stabilizers, biocides or preservatives, neutralizing agents and any mixtures thereof.
[0024] If biocidal or preservative agents, e.g. fungicides and / or algicides, are intentionally used in the aqueous treatment compositions according to the invention, then - not only because of the very good penetration properties of the treatment compositions according to the invention - very effective aqueous compositions are obtained renovation systems. The aqueous treatment compositions according to the invention can thus also be used for biocidal treatment of building surfaces, in particular building facades.
[0025] In a preferred embodiment, the aqueous treatment compositions according to the invention are furthermore also distinguished by the fact that they may in principle contain no biocides or preservatives. It is believed that this is due to the good penetration properties of the aqueous treatment mass according to the invention. Preferred in this connection are the aqueous treatment compositions according to the invention which essentially do not contain preservatives used in closed packages. Processing compositions which do not contain preservatives used in sealed packages and preservatives used in coatings are particularly preferred, wherein, according to one embodiment of the invention, processing compositions which do not contain preservatives or biocides are particularly suitable. . In the context of the present invention, the treatment compositions according to the invention, in accordance with the "eco-criteria" of RAL gGmbH for "low-emission RAL-UZ 102 interior wall paints" (January 2015 edition), are considered to be free of preservatives , if they do not contain preservatives or if the preservatives, calculated on a single substance (including formaldehyde), are contained in an amount of less than 2 ppm, as well as in terms of CIT (5-chloro-2-methyl-4
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Isothiazoline) in an amount of less than 0.5 ppm. The aqueous treatment compositions according to the invention can therefore also be used for the biocidal treatment of building surfaces, in particular building facades.
[0026] In many applications, in particular those in which the aqueous treatment compositions of the invention are used essentially without preservatives or substantially without preservatives used in sealed packages, it has proved advantageous to use such treatment compositions that contain pH stabilizers. Suitable pH stabilizers include, for example, complexing agents, especially polyblastic complexing agents such as EDTA, as well as alkyl siliconates. Suitable alkyl siliconates include, in particular, compounds of formula (II) HO- [Si (R)<sup>3</sup>) (OX) -O] nH, in which the residue R<sup>3</sup> is an alkyl group having 1 to 8 carbon atoms, X is a cation, and n is a number in the range of 1 to 6. Preferably, the molecular weight of said alkylsiliconates is in the range of 100 to 500. In a particularly convenient embodiment, R<sup>3</sup> is a methyl, ethyl, i-propyl or n-propyl group, preferably a methyl group. As cations, alkali metals, in particular potassium, are particularly suitable. As preferred examples of alkyl siliconates, potassium methyl siliconate and sodium propyl siliconate may be mentioned. Potassium methylsiliconate has proved to be particularly advantageous.
[0027] Alternatively or additionally to the use of pH stabilizers, especially for such aqueous treatment masses according to the invention, which should be used essentially without preservatives or essentially without preservatives used in closed packaging, the use of silica sol and / or or water glass as an inorganic binder, alone or together with an organic binder. For example, in a convenient embodiment, the aqueous treatment compositions of the present invention may contain silica sol and potassium methyl siliconate or water glass and potassium methyl siliconate.
[0028] According to an alternative embodiment, it can be provided that the aqueous treatment compositions of the invention contain at least one preservative used for coatings, and preferably contain at least one preservative used for coatings and do not contain a preservative used in closed packaging. In another preferred embodiment, said aqueous treatment compositions of the invention may generally be equipped with biocides or preservatives. The above-mentioned embodiments can also be used as so-called renovation solutions for the treatment of building facades, for example those that have been attacked by algae and / or mold, or those to be protected against algae and / or mold attack.
[0029] The aqueous treatment compositions of the invention contain as a mandatory component at least one wetting additive. Substrate wetting additives in the context of the present invention are amphiphilic substances that are capable of lowering the surface tension of liquid aqueous phases.
The aqueous treatment compositions of the invention contain, as a suitable wetting additive, at least one polyether siloxane copolymer and / or at least one, in particular non-ionic, alkoxylated, in particular ethoxylated and / or
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Butoxylated, secondary alcohol and / or at least one alkoxylated, in particular ethoxylated and / or butoxylated, linear or branched C9-C15 alcohol.
[0031] Particularly preferred wetting additives for the substrate are those alkoxylated secondary alcohols that are ethoxylated and / or butoxylated secondary C11-C15 alcohols, especially ethoxylated and butoxylated C11-C15 secondary alcohols.
[0032] It is believed that the use of wetting additives for the substrate has a positive effect on the penetration depth of the aqueous treatment compositions according to the invention.
[0033] The amount of wetting additives in the aqueous treatment masses according to the invention is particularly in the range from 0.1 to 4% by weight, preferably in the range from 0.2 to 2.5% by weight, and more preferably in the range from 0 , 4 to 1.5% by weight The amounts given always refer to the solids content.
[0034] In many applications, it has proved very expedient to adjust the pH of the aqueous treatment mass according to the invention to values in the range of 8.0 to 11.5. The pH of the aqueous treatment mass according to the invention is, however, preferably in the range from 8.5 to 11.5, and more preferably in the range from 9.0 to 11.5. In addition, such aqueous treatment compositions according to the invention are convenient in which the pH of the aqueous treatment composition according to the invention is in the range of 8.5 to 11.0 or in the range of 9.0 to 10.0.
[0035] If the pH is not adjusted according to the aqueous treatment mass added according to the invention, it has proved beneficial to adapt the pH to the above-mentioned target and preferred ranges by adding the appropriate basic or acidic substances.
[0036] The aqueous treatment compositions according to the invention, especially in the form of dispersion preparations, are distinguished in a particularly advantageous embodiment in that they have a flow curve formed by the shear rates γ drawn on the abscissa and applied on the ordinate of the corresponding shear stress values. τ, whose average slope determined in the shear rate range from 20 to 100 s-1 is in the range from 0.010 to 0.10, preferably in the range of 0.020 to 0.080 and particularly preferably in the range of 0.030 to 0.050 Pa-s, and / or whose average slope determined in the shear rate range of 20 to 200 s-1 is in the range of 0.010 to 0.10, preferably in the range from 0.020 to 0.080 and particularly preferably in the range from 0.025 to 0.070 Pa-s, and / or whose average slope determined in the shear rate range from 20 to 400 s-1 is in the range from 0.010 to 0.080, preferably in the range of 0.012 to 0.060 and particularly preferably in the range of 0.014 to 0.040 Pa-s, and / or whose average slope determined in the shear rate range of 1200 to 1500 s-1 is less than or equal to 0.025, preferably less than or equal to 0.020 and particularly preferably less than or equal to 0.015 Pa-s, and / or that the maximum shear stress Tmax determined for the treatment mass, in particular the dispersion treatment mass, or that the shear stress τ determined at a shear rate of 1500 s-1 is in the range from 15 to 80 Pa, preferably 20 to 60 Pa, particularly preferably in the range from 25 to 50 Pa.
The aqueous treatment compositions according to the invention, in particular in the use forms, i.e. in the form in which they are applied, e.g. as a primer to the substrate, contain 60 to 96% by weight, preferably 80 to 92% by weight. water, 0.5 to 14% by weight, preferably 5 to 12% by weight,
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Particularly preferably 7 to 10 wt. binders, in particular organic binders (solids content), 0.1 to 4% by weight, preferably 0.2 to 3% by weight and particularly preferably 0.3 to 2 wt. thickener (solids content) and 0.1 to 4% by weight, preferably 0.2 to 2.5% by weight and particularly preferably 0.4 to 1.5 wt. wetting additives for the substrate (solids content), 0 to 3, 0 wt.%, preferably 0.1 to 2 wt.%, and particularly preferably 0.5 to 1 wt. wetting and / or dispersing agent (solid content or non-aqueous content), the components forming the aqueous mass to be treated are always added up to 100 wt.
[0038] Of course, the aqueous treatment compositions of the invention also include concentrates from which actual dosage forms can then be obtained by dilution with water. By way of example, in order to obtain suitable concentrates, the abovementioned ranges of solids content or non-aqueous constituents may be multiplied by a factor in the range from 2 to 100, preferably in the range from 2 to 50 or in the range from 5 to 20, while reducing the water content accordingly , wherein the components forming said aqueous treatment mass in the form of a concentrate always add up to 100% by weight.
[0039] The aqueous treatment masses according to the invention make it possible to adjust or maintain a rheological profile which, on the one hand, allows penetration into the substrate, in particular mineral, and on the other hand minimizes the risk of splashing or drop formation during application with a roller, brush or brush, and improves and makes the mass taking up with a tool more efficient (e.g. brush, brush or roller). The aqueous treatment compositions according to the invention are therefore preferably characterized by pseudoplastic and / or thixotropic flow behavior.
[0040] Subjecting substrates, especially mineral substrates, such as plaster coatings, gypsum boards, gypsum boards, e.g. rigips, unfired bricks, cellular concrete substrates, concrete substrates, e.g. concrete walls or sand-lime substrates, treatment with the aqueous treatment mass according to the invention, after applying the paint coating to the treated, a very high degree of color stability as well as color intensity is obtained. A particular advantage is also the fact that this effect also occurs in the case of non-uniform substrates, for example when changing from a hydrophobic to a hydrophilic one. By using the aqueous treatment compositions according to the invention, the risk of cracks and flaking or the risk of blistering in substrates, for example substrates with gypsum putty, are also avoided. Without being bound by theory, this may be due to the fact that the aqueous treatment compositions of the invention can penetrate relatively deep into the treated substrate and strengthen and / or harmonize its properties profile. The object underlying the invention is thus also achieved by the coating or primer obtained or obtainable by means of the aqueous treatment mass according to the invention, in particular the dispersion treatment mass, and by the substrate, in particular the mineral substrate, on which the aqueous substrate is first applied the treatment mass according to the invention, followed by a paint coating.
[0041] The aqueous treatment composition according to the invention, in particular in the form of a dispersion treatment composition, is therefore suitable for application to a surface with a paint roller,
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- a brush, spray system or brush with a reduced or largely limited amount of splashes and / or mist or without splashes and / or mist.
[0042] By carrying out pre-treatment of substrates, especially mineral substrates (including mineral substrates containing an old paint coating), the aqueous treatment compositions according to the invention, color stability and / or color intensity is obtained in particular also when applying paint coatings to a wide variety of substrates. This also includes substrates in which, for example, a hydrophilic plaster coating is combined with a hydrophobized plaster coating or where there is a transition from the surface with old plaster to the newly plastered areas.
[0043] It is therefore advantageous that the very large surfaces of all traditional substrates can be easily, reliably and cleanly treated or primed using the aqueous treatment compositions of the invention. It is possible to use the material very efficiently, i.e. the described advantageous properties are obtained with even a relatively small amount of water treatment mass per surface processed. The aqueous treatment mass according to the invention is therefore characterized by clear processing ease. As a rule, it is not necessary at all to apply the aqueous treatment mass in the form of a layer, it is sufficient that the aqueous treatment mass penetrates into the substrate. Thanks to the rheological profile offered by the aqueous treatment compositions according to the invention, the treatment process carried out by roller, brush or spray application is particularly easy. As a rule, this also saves time compared to traditional materials and methods. Due to the reduced tendency to splatter, for example when applying with a roller, a much smaller scope of work related to covering or covering is required. Due to the good penetration properties of the aqueous treatment compositions according to the invention, unstable, brittle or fragile substrates as well as absorbent substrates can be reinforced. As a result, the appearance of the paint coatings applied to them is significantly improved. In particular, the aqueous treatment mass according to the invention contributes to leveling the absorbency of the treated substrate, in particular the mineral substrate. After pre-treatment with the aqueous treatment compound according to the invention, better adhesion is also obtained on smooth substrates. In addition, a particular advantage is that the beneficial properties are also revealed when the aqueous treatment compositions of the invention are applied to old coatings. The aqueous treatment compositions according to the invention are suitable for both indoor and outdoor use. Using the aqueous treatment compositions according to the invention, no franking of the coating on the substrate is also observed. In summary, it can be stated that the aqueous treatment compounds according to the invention, in particular the dispersion treatment compounds, are suitable for the uniformization of substrates with uneven absorption, especially mineral substrates, outside and / or inside buildings and / or for the uniformity of capillary conductivity, especially mineral substrates outside and / or inside buildings with variable properties related to capillary conductivity and / or for strengthening and / or improving adhesion on, especially mineral, outdoor and / or indoor substrates and / or to provide a uniform color impression of paint coatings on, especially mineral, outdoor and / or indoor substrates, mineral substrates being in particular selected from the group consisting of plaster coatings, boards plasterboard, plasterboard, brick
Non-fired, cellular concrete substrates, concrete substrates and lime-sand brick substrates.
[0044] The features of the invention disclosed in the above description and claims may be relevant to carrying out the invention in its various embodiments both individually and in any combination.
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- EP 1 301 138 B1
Contents10
9 members in 5 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 16191982 | European Patent Office (EPO) | A | |
| 161919824 | – | – | – |
| EP20160191982 | – | – | – |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| EP3301138A1 | European Patent Office (EPO) | A1 | |
| EA201791938A1 | Eurasian Patent Organization (EAPO) | A1 | |
| EP3301138B1 | European Patent Office (EPO) | B1 | |
| ES2741598T3 | Spain | T3 | |
| PL3301138T3This record | Poland | T3 | |
| GEP20217325B | Georgia | B | |
| EP3301138B2 | European Patent Office (EPO) | B2 | |
| ES2741598T5 | Spain | T5 | |
| PL3301138T5 | Poland | T5 |
Numbers
- Publication
- 3301138
- Publication, DOCDB
- 3301138
- Publication, EPODOC
- PL3301138T
- Application
- 16191982
- Application, DOCDB
- 16191982
- Application, EPODOC
- PL20160191982T
Titles2
- English
- AQUEOUS TREATMENT MASS FOR BUILDING WALLS, CEILINGS OR FLOORS
- Polish
- WODNE MASY DO OBRÓBKI ŚCIAN, SUFITÓW I PODŁÓG BUDYNKÓW
Classification
- CPC, 10
- C09D133/10
- C09D5/14
- C09D133/08
- C09D5/024
- C09D5/027
- C04B26/04
- C04B26/06
- C04B28/24
- C04B28/26
- C04B2111/00491
- IPC, 2
- C09D133 10
- C09D133 08