WO2016139131A1 - Procédé de fabrication d'un agent d'hydrofugation en poudre pour matériaux de construction, à base d'organosiliconate alcalin - Google Patents

Procédé de fabrication d'un agent d'hydrofugation en poudre pour matériaux de construction, à base d'organosiliconate alcalin Download PDF

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Publication number
WO2016139131A1
WO2016139131A1 PCT/EP2016/054019 EP2016054019W WO2016139131A1 WO 2016139131 A1 WO2016139131 A1 WO 2016139131A1 EP 2016054019 W EP2016054019 W EP 2016054019W WO 2016139131 A1 WO2016139131 A1 WO 2016139131A1
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Prior art keywords
acid
organosiliconates
alkali
fatty acids
water
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PCT/EP2016/054019
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German (de)
English (en)
Inventor
Michael Stepp
Daniel Schildbach
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Wacker Chemie Ag
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Publication of WO2016139131A1 publication Critical patent/WO2016139131A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • 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
    • 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
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • C07F7/1804—Compounds having Si-O-C linkages
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/60—Agents for protection against chemical, physical or biological attack
    • C04B2103/65—Water proofers or repellants
    • 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
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00146—Sprayable or pumpable mixtures
    • C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
    • 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
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
    • C04B2111/60—Flooring materials
    • C04B2111/62—Self-levelling compositions
    • 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 a process for the preparation
  • Alkaliorganosiliconates have been used for decades
  • Hydrophobing i. water-repellent equipment
  • mineral building materials used in particular by mineral building materials.
  • these are inorganic building materials, which may be silicate and non-silicate. Due to their good solubility in water, alkali organosiliconates can be applied as an aqueous solution to solids where, after evaporation of the water under the influence of carbon dioxide, they form firmly adhering, permanently water-repellent surfaces. Since they contain virtually no hydrolytically removable organic radicals, the curing takes place advantageously without release of undesirable volatile organic by-products (so-called VOC). Above all, the aqueous solution of methyl silicate is of great importance. These are, in particular, the potassium (potassium methylsiliconate) or the sodium derivative
  • Aqueous solutions of organosiliconates are particularly well suited for the hydrophobic treatment of weakly acidic to slightly alkaline building materials, in particular of fired clay, natural stone or gypsum products.
  • Hydrophobic agent either by impregnation or
  • Mass hydrophobing done.
  • products of calcined clay or natural stone are immersed in an aqueous dilution of the organosiliconate for a certain time or sprayed with such a dilution, the active substance dissolved in water being capillary in the pore structure of the Building material penetrates.
  • a hydrophobic zone develops that surrounds the building material and drastically reduces its capillary water absorption.
  • Mass hydrophobization becomes the aqueous solution of the
  • aqueous slurry for example, "porridge”
  • a gypsum-based building material is mixed.After the setting and drying of the building material is a greatly reduced
  • Mass hydrophobization e.g. of gypsum is that the building material is not only surrounded by a hydrophobic zone, but water repellent through and through. This is particularly important in the case of water-soluble building materials such as gypsum or when the building material is cut into pieces after the water-repellent treatment. This method finds e.g. in the
  • Self-leveling compounds as well as adhesives are delivered to the construction site as powder in bags or silos and only then mixed with the mixing water.
  • gypsum plaster For use in gypsum plaster,
  • Gypsum-based gypsum fillers, gypsum-based tile adhesives, gypsum-based tile adhesives, gypsum-based soil-based leveling compounds and screed compounds and similar mineral building materials therefore become a solid and powdery plaster
  • Dry mixture can be added and only with the addition of Water during application on site, for example, on the construction site, unfolds its hydrophobic effect in a short time. This is called dry-mix application.
  • Standard EN 520 specifies a water absorption, measured for two hours, of less than 5% for the water absorption class Hl of hydrophobic plasterboard approved for use in wet rooms. Accordingly, the standard for water-repellent
  • Moisture penetration must also have a water absorption of less than 5%.
  • Dry mortar also the water absorption, measured during 24 hours, is of great importance.
  • DE1957263 describes a method for building gypsum walls in underground operation. A pumpable and thus per se liquid gypsum slurry containing, among other additives
  • Sodium linoleate combined in a Sanierputz, but here the siliconate is added in liquid form. Furthermore, the redevelopment plaster described is based on the binder cement, and not on gypsum.
  • a water-repellent gypsum mortar is obtained by adding a mixture of fatty amine, low-molecular-weight acid and alkali metal siliconate as hydrophobing agent during the mixing of the gypsum.
  • it is also not a Drymix additive in powder form.
  • WO2012 / 022544 describes the preparation of pulverulent alkali metal alkyl siliconates having different molar ratios
  • Potassium to silicon and their advantages in the additive of gypsum-bound dry mortars, such as lime gypsum plaster In the corresponding application example 3 with a lime-gypsum machine plaster, 0.3% by weight of a potassium methylsiliconate powder having a molar ratio of potassium can be added
  • the lime-plaster - machine plaster used here is a so-called low-filled plaster with a proportion of settable gypsum phases of about 60%.
  • Such gypsum plaster contains a low content of fillers (or also called aggregates) due to its relatively high proportion of settable gypsum phases.
  • Such fillers may, for example, artificial or
  • alkaline earth carbonates eg calcite, dolomite
  • alkaline earth sulfates eg calcium sulfate in the form of gypsum or anhydrite
  • chippings natural sands or Silica sand.
  • settable gypsum phases is only about 20% and the content of fillers is correspondingly higher and is around 80%.
  • 0.3% by weight of a potassium methylsiliconate powder with a molar ratio of potassium can also be added here
  • Fresh mortar is the slump, which can be determined according to EN 1015-3 with a hammermannel.
  • the problem described for highly filled lime gypsum plasters is achieved when the gypsum plaster in addition to the potassium methylsiliconate powder alkali or alkaline earth metal salts of fatty acids are added as further additives.
  • the combination of these two hydrophobing additives can reduce both the 2-hour over 90% and the 24-hour water absorption by over 80% compared to the untreated reference.
  • First it is unexpected that the proportion of each additive used in the total dosage of the combination of both additives alone is not effective in the desired form.
  • the two individual additives, used alone in the same dosage as the total dosage of the combination of both additives are also not effective in the desired form. The latter case is a synergy, since the combination of the two additives is more effective than either of the two individual additives, based on the same amount used.
  • the slump in accordance with EN 1015-3 is not influenced as much as, for example, when potassium methylsiliconate powder is used in a correspondingly higher dosage.
  • the invention relates to a process for the preparation of pulverulent solids (F), which include Alkaliorganosiliconate and fatty acids, in which
  • alkali organosiliconates with fatty acids or fatty acid esters or mixtures thereof in water
  • the powdered solids (F) are homogeneous and free-flowing. It can come to no separation of the individual components more. This process also has the advantage that the basicity of the siliconate is reduced by the addition of fatty acid, resulting in thermal stability, handling and application
  • the Alkaliorganosiliconate used in the first step can carry as a cation only one kind of alkali metals or their mixtures with each other. Particularly preferred are the sodium and potassium organosiliconates or mixtures thereof.
  • the alkali metal organosiliconates are preferably salts of
  • Organosilanols their hydrolysis / condensation products, or of organosilanols together with their
  • Hydrolysis / condensation products with alkali cations in which the molar ratio of cation to silicon is> 0.1.
  • a ratio between 0.5 and 3.0, more preferably a ratio between 0.6 and 2.0, exceptionally preferred is a ratio between 0.9 and 1.5.
  • the organo-group is preferably a monovalent one
  • halogen atoms amino, alkoxy or silyl hydrocarbon radical having 1 to 18 carbon atoms.
  • Particularly preferred are unsubstituted alkyl radicals, cycloalkyl radicals, alkylaryl radicals, arylalkyl radicals and phenyl radicals.
  • the hydrocarbon radicals have 1 to 6 carbon atoms.
  • Particularly preferred are the 3,3,3-trifluoropropyl, the vinyl and the phenyl radical.
  • alkyl radicals such as the methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl and hexadecyl radicals.
  • alkyl radicals preferably having 1 to 18 carbon atoms, preferably 1 to 6 carbon atoms, and thereof in turn the methyl radical.
  • organo radical examples are:
  • Cyclopentyl n-hexyl, cyclohexyl, n-heptyl, n-octyl, 2- Ethylhexyl, n-nonyl, n-decyl, n-undecyl, 10-undecenyl, n-dodecyl, isotridecyl, n-tetradecyl, n-hexadecyl, vinyl, allyl, benzyl, p-Chlorophenyl, o- (phenyl) phenyl, m- (phenyl) phenyl, p- (phenyl) phenyl, 1-naphthyl, 2-naphthyl, 2-phenylethyl, 1-phenylethyl, 3 -Phenylpropyl, 3- (2-
  • organo radicals are radicals - (CH 2 O) n -R x , - (CH 2 CH 2 O) m -R 2 , and - (CH 2 CH 2 NH) 0 H, where n, m and o are values from 1 to 10, in particular 1, 2, 3 and R 1 , R 2 are alkyl radicals having 1 to 6 carbon atoms, in particular the above
  • fatty acids lower (up to seven carbon atoms), middle (eight to twelve carbon atoms) and higher (more than twelve carbon atoms) fatty acids may be used, with lower fatty acids being more preferred, higher fatty acids being more preferred and medium fatty acids being most preferred.
  • particularly preferred and extremely preferred fatty acids caprylic acid (octanoic acid), 2-ethylhexanoic acid, pelargonic acid (nonanoic acid), capric acid
  • Pentadecanoic acid palmitic acid (hexadecanoic acid), stearic acid (octadecanoic acid), palmitoleic acid ((Z) -9-hexadecenoic acid), oleic acid ((Z) -9-octadecenoic acid). It is also possible to use mixtures of fatty acids. Instead of the fatty acids or in addition, corresponding fatty acid esters can also be used.
  • fatty acid esters such as Fatty acid alkyl or glycerol mono-, di- and triesters
  • Fatty acid alkyl or glycerol mono-, di- and triesters optionally be used in admixture with fatty acids.
  • Mixtures of different fatty acids or fatty acid esters or fatty acids with fatty acid esters can also be used.
  • the molar ratio of fatty acid to the alkali metal bound in the alkali metal organosiliconate is preferably from 0.05 to 1.0, particularly preferably from 0.1 to 0.5, in particular from 0.2 to 0.35.
  • the reaction of the alkali metal organosiliconates with fatty acids or fatty acid esters in the first step preferably takes place by simple mixing of the components, more preferably because of the good homogenization in the presence of water. It is also possible to use suspensions or solutions of the components.
  • Parts by weight in particular 40 to 100 parts by weight of water used.
  • solubilizers are polar solvents, particularly preferably alcohols, in particular alkanols and alkanediols having one to 4 carbon atoms, for example methanol, ethanol, 2-propanol, 1-propanol, 1-butanol, 2-butanol, isobutanol, ethylene glycol, propylene glycol, wherein methanol and ethanol are particularly preferred because of their low boiling points, and ketones, such as acetone or methyl ethyl ketone.
  • Alkaliorganosiliconaten which are often commercially available, reacted with pure fatty acids.
  • concentration of the alkali organosilicon solutions used is preferably from 10 to 70% by weight, more preferably at least 40% by weight, in particular at least 50% by weight.
  • medium and higher fatty acids often form two-phase mixtures on mixing with purely aqueous alkali metal organosilicon solutions because of their low polarity, which do not produce any effects on drying
  • solubilizer in an amount that is straight
  • solubilizer depends primarily on the type of fatty acid, the type of Alkaliorganosiliconats and the
  • Concentration of the participating reaction partners and can be determined by the skilled person in simple mixing preliminary experiments. They are preferably in the range of not more than 40% by weight, more preferably not more than 30% by weight, in particular not more than 20% by weight, of the reaction mixture. It is also possible to add mixtures of solubilizers.
  • reaction takes place at
  • reaction is preferably carried out at the pressure of the surrounding atmosphere. But it can also be at elevated or lower pressure
  • the heat of neutralization released during the reaction can be dissipated by cooling, but it may also be necessary to first heat the mixture to start the desired reaction.
  • the end of the reaction can be easily detected at a constant cooling capacity at the drop in temperature. To ensure a controlled reaction is
  • one component is introduced and the other metered, but it can also be used, for example.
  • Components are dosed in parallel.
  • liquid fatty acid or fatty acid derivatives which are liquid at room temperature, it is particularly preferable to use a batchwise solution of the
  • Alkaliorganosiliconat and fatty acid or fatty acid derivative is finally in the second step to a homogeneous
  • the drying is carried out continuously, more preferably in a spray dryer or a
  • Fluidized bed dryer especially in a spray dryer.
  • Other preferred continuous dryers are
  • Thin-film contact dryer is Thin-film contact dryer.
  • discontinuous dryers are tray dryers, vacuum contact dryers,
  • Freeze dryer preferred, with mixer dryer, conical dryer and fluidized bed dryer are particularly preferred.
  • the drying temperature in the second step is preferably 60 ° C to 200 ° C, more preferably 70 ° C to 150 ° C.
  • the liquid mixtures may contain, in the first or second step, further constituents, e.g. to improve the
  • flow aids and / or anti-caking agents can be added.
  • components from the finished building material mixture such as gypsum, cement, sand, glass, or fillers such as chalk, silicates, clays,
  • Silicas, metal oxides, polymers (for example PVA, PVC, PE, PP, polystyrene, PTFE, PVDF in powder form or as pellets) and setting retarders or accelerators as well as liquid polymers such as mineral oils or silicone oils can be added at the beginning, during or at the end of the production process become.
  • PVA polyvinyl alcohol
  • PE polyvinyl styrene
  • PTFE polystyrene
  • PVDF in powder form or as pellets
  • liquid polymers such as mineral oils or silicone oils
  • Alkaliorganosiliconaten and fatty acids or fatty acid esters added at most 50, more preferably at most 10 parts by weight of further ingredients.
  • Procedure can also be partial or completely parallel
  • Paddle dryer or on a fluidized bed the fatty acid or their derivatives are added and thus the economic efficiency of the process can be increased.
  • Formulas is the silicon atom tetravalent.
  • MGP 1 used in powder form MGP 1 is a low-filled lime-plaster machine plaster with a proportion of settable gypsum phases of about 60% and one of them following proportion of about 40% fillers), MGP 2 is a highly filled lime-gypsum machine plaster with a share of
  • Machine plaster MGP 2 300 g powder and 105 g water according to the instructions). Subsequently, the obtained slurry was poured into PVC rings (diameter: 80 mm, height 20 mm) and the setting of gypsum plaster at 23 ° C and 50% relative
  • Humidity waited more than 6 hours. After demoulding the gypsum plaster test specimens from the rings, these were used for another 24
  • test specimens were before
  • test specimens were stored after determination of the dry weight for 120 min in a plastic tub under water, the
  • Percentage water consumption ⁇ [mass (wet) - mass (dry)] / mass (dry) ⁇ ⁇ 100% calculated. After weighing, only a few per test specimen
  • Table 1 shows in the case of Application Examples 1 and 2 that the potassium methylsiliconate powder (not according to the invention) the 2 -h water and the 24 -h water uptake of a low-filled engine plaster (MGP 1) at a dosage of 0.22 wt .-% greatly reduced.
  • MGP 1 low-filled engine plaster
  • Table 1 shows that even 0.26% by weight of potassium methylsiliconate powder (not According to the invention) although the 2-h, but not the 24 -h water absorption of a highly-filled machine plaster (MGP 2) can be reduced to values at the same time less than 10 wt .-%.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention a pour objet un procédé de fabrication de matières solides (F) en poudre comprenant des organosiliconates alcalins et des acides gras, ledit procédé comprenant une première étape dans laquelle les organosiliconates alcalins sont convertis en mélanges liquides avec des acides gras ou des esters d'acides gras ou des mélanges de ceux-ci dans de l'eau, et une seconde étape dans laquelle les mélanges liquides sont séchés pour donner des matières solides (F) en poudre,
PCT/EP2016/054019 2015-03-02 2016-02-25 Procédé de fabrication d'un agent d'hydrofugation en poudre pour matériaux de construction, à base d'organosiliconate alcalin WO2016139131A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015203685.5A DE102015203685A1 (de) 2015-03-02 2015-03-02 Verfahren zur Herstellung pulverförmiger Alkaliorganosiliconat- Baustoffhydrophobiermittel
DE102015203685.5 2015-03-02

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Publication Number Publication Date
WO2016139131A1 true WO2016139131A1 (fr) 2016-09-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022111783A1 (fr) * 2020-11-24 2022-06-02 Knauf Gips Kg Matériau de construction à base d'un liant minéral comprenant des combinaisons d'agents d'hydrophobisation à efficacité synergique

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1957263A1 (de) 1969-11-14 1971-05-27 Knauf Westdeutsche Gips Verfahren zum Errichten von Mauern im Untertagebetrieb
DE3105407A1 (de) 1981-02-14 1982-09-02 Hoechst Ag, 6000 Frankfurt "wasserabweisender gipsmoertel"
US4482630A (en) * 1982-04-08 1984-11-13 Colgate-Palmolive Company Siliconate-coated enzyme
DD291074A5 (de) 1989-12-21 1991-06-20 Bauakademie Ddr Sanierputzmoertel
DE4336600C1 (de) 1993-10-27 1994-10-20 Nuenchritz Chemie Gmbh Verfahren zur kontinuierlichen Herstellung wäßriger Alkali-Alkylsiliconatlösungen
WO2004103928A1 (fr) * 2003-05-22 2004-12-02 Wacker Polymer Systems Gmbh & Co. Kg Additif hydrophobant
EP1767506A1 (fr) * 2005-09-27 2007-03-28 Elotex AG Poudres redispersables dans l'eau, procédé de production de lesdites poudres et leur utilisation
WO2012022544A1 (fr) 2010-07-21 2012-02-23 Wacker Chemie Ag Poudres de siliconates organiques solubles dans l'eau
WO2013075969A1 (fr) 2011-11-22 2013-05-30 Wacker Chemie Ag Procédé de production de matières solides à partir de sels alcalins de silanols
WO2015155034A1 (fr) * 2014-04-08 2015-10-15 Wacker Chemie Ag Mortier de plâtre sec comprenant un additif d'hydrophobisation

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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DE3105407A1 (de) 1981-02-14 1982-09-02 Hoechst Ag, 6000 Frankfurt "wasserabweisender gipsmoertel"
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