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EP1601628A2 - Verfahren zur erhöhung der wasserabweisende eigenschaft von bindemittelzusammensetzungen, die dadurch hergestellte zusammensetzungen und deren verwendungen - Google Patents

Verfahren zur erhöhung der wasserabweisende eigenschaft von bindemittelzusammensetzungen, die dadurch hergestellte zusammensetzungen und deren verwendungen

Info

Publication number
EP1601628A2
EP1601628A2 EP04717663A EP04717663A EP1601628A2 EP 1601628 A2 EP1601628 A2 EP 1601628A2 EP 04717663 A EP04717663 A EP 04717663A EP 04717663 A EP04717663 A EP 04717663A EP 1601628 A2 EP1601628 A2 EP 1601628A2
Authority
EP
European Patent Office
Prior art keywords
carbon atoms
polyalkylalkylsiloxane
weight
composition
hydrocarbon
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.)
Withdrawn
Application number
EP04717663A
Other languages
English (en)
French (fr)
Inventor
Martial Deruelle
Daniel Joubert
Jean-Christophe Castaing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hexion Research Belgium SA
Original Assignee
Rhodia Chimie SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rhodia Chimie SAS filed Critical Rhodia Chimie SAS
Publication of EP1601628A2 publication Critical patent/EP1601628A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
    • 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
    • C04B2111/00474—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
    • Y10T428/2995—Silane, siloxane or silicone coating

Definitions

  • the present invention relates to a process for increasing the water repellency of mineral binder compositions as well as the compositions capable of being obtained by this process and their uses in the field of construction.
  • the present invention therefore relates to a process for increasing the water repellency of a composition of mineral binders, characterized in that a sufficient quantity of at least one polyalkylalkylsiloxane is added comprising at least one hydrocarbon graft having between 6 and 18 atoms of carbon to said composition.
  • the mineral binders can be chosen from hydraulic binders or aerial binders.
  • a hydraulic binder within the meaning of the present invention is a binder which sets in contact with water and which, once hardened, is no longer sensitive to water.
  • hydraulic binders that may be mentioned include cements which may be of the Portland, aluminous or blast furnace type.
  • An aerial binder within the meaning of the present invention is a binder which sets on contact with water and which, once hardened, remains sensitive to water.
  • air binders include plasters.
  • the mineral binders are hydraulic mineral binders.
  • Hydraulic mineral binders are generally based on cement. They can be in the form of grout, mortar or concrete. They are used, for example, in the following applications: tile mortars, joint mortars, monolayer plasters, exterior thermal insulation systems, smoothing and leveling plasters, adhesives and plasters for insulation complexes, repair mortars, waterproofing coatings and grout for oil well cementing.
  • the polyalkylalkylsiloxane of the invention comprises at least one hydrocarbon graft having between 6 and 18 carbon atoms.
  • the length of the graft hydrocarbon chain varies between 6 and 18 carbon atoms.
  • the length of the hydrocarbon chain is included between 8 and 12 carbon atoms. Even more preferably, the length of the hydrocarbon chain is 12 carbon atoms.
  • the graft hydrocarbon chain can be saturated or unsaturated, and branched or linear. It can also contain halogens, such as fluorine or chlorine, and hydroxyl groups, ether groups, thioether groups, ester groups, amide groups, carboxy groups, sulfonic acid groups, carboxylic anhydride groups, and / or carbonyl groups.
  • the polyalkylalkylsiloxane of the invention comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms is chosen from organopolysiloxanes which are liquid at room temperature.
  • Organopolysiloxanes are polymers of polysiloxanes comprising a graft which is an organic radical.
  • Polysiloxane polymers can be linear, cyclic or branched.
  • Organic radicals are monovalent hydrocarbon radicals having from 1 to 18 carbon atoms.
  • the polymer can also comprise one or more hydrogen atoms bonded to silicon and / or one or more hydroxyl and / or alkoxyl groups.
  • Linear polymers consist of diorganosiloxy sequences of formula RR 'SiO in which the symbols R, and R', which are identical or different, represent hydrocarbon radicals of which at least one of R or R 'has a hydrocarbon chain having from 6 to 18 carbon atoms.
  • the hydrocarbon radicals represented by the symbols R, or R ′ include: - alkyl radicals having from 1 to 18 carbon atoms such as the methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl, 2-ethylhexyl radicals, octyl, decyl, dodecyl, stearyl, - cycloalkyl radicals having up to 10 carbon atoms such as cyclopentyl, cyclohexyl,
  • - aicenyl radicals having from 2 to 4 carbon atoms such as vinyl, allyl, butene-2yl radicals, - mononuclear aryl radicals having from 6 to 10 carbon atoms such as phenyl, tolyl, xylyl radicals.
  • the octyl, dodecyl radicals are the preferred radicals.
  • organopolysiloxane polymers include: ⁇ - ⁇ bis (triorganosiloxy) diorganopolysiloxane polymers whose organic radicals linked to silicon atoms are chosen from methyl, vinyl and phenyl radicals; for example ⁇ - ⁇ (trimethylsiloxy) methylalkyl polysiloxane oils of formula (I):
  • x is an integer or fractional number between 5 and 500, preferably between 20 and 80, and even more preferably between 30 and 60, and even more advantageously around 50
  • M represents (CH3) 3Si -O-
  • D (R) represents -Si (CH3) (Alkyl) -O-,
  • the alkyl radical can be cyclic, linear or branched, and contains 6 to 18 carbon atoms.
  • the alkyl radical comprises between 8 and 12 carbon atoms. Even more preferably, the alkyl radical is octyl or dodecyl;
  • ⁇ - ⁇ di (hydroxy) diorganopolysiloxane polymers blocked at each end of their chain by a hydroxyl group, of viscosity preferably 5 m Pa.s at 5000 mPa.s at 25 ° C; for example, ⁇ - ⁇ di (hydroxy) methylphenylpolysiloxane oils; branched organosiloxane polymers (silicone resins) liquid at room temperature, comprising one or more units chosen from those of formula RR 'SiO (unit D), RSiO ⁇ , 5 (unit T) and SiO 2 (unit Q) in which the radicals R and R 'are alkyl radicals having from 1 to 18 carbon atoms with at least radicals R or R' comprising between 6 and 18 atoms of this carbon;
  • organohydrogenopolysiloxane polymers having at least one hydrocarbon graft having between 6 and 18 carbon atoms.
  • Liquid, linear, cyclic or branched organopolysiloxanes can of course be used alone or as a mixture between them.
  • the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms can be incorporated in the form of a solid powder, obtained by processes for impregnating silicones on a porous support or processes for preparing pulverulent compositions redispersible in the silicone water, also called dried silicone emulsions as described for example in documents FR 95 12586, FR 95 12587, WO 97/15385, WO 99/38611, WO 99/38911 or WO 00/26280, or in the form of emulsion in a sufficient amount in the construction composition.
  • the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms can also be premixed in a sufficient amount with a latex composition.
  • This second embodiment is preferred.
  • This premix of the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms and of the latex can be produced in emulsion, by mixing the polyalkylalkylsiloxane in the form of an emulsion with the aqueous dispersion of polymer in emulsion (latex) during polymerization or in post-polymerization. This premix can then be dried by spray-drying to obtain a redispersible powder.
  • polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms in the form of a dry emulsion, ie of a powder in the latex atomization tower, that is to say at the time of drying of the latex.
  • the premix can also be carried out by a powder-powder mixture of a dried polyalkylalkylsiloxane emulsion comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms obtained for example by one of the methods described above, and a redispersible latex powder.
  • a solid powder of the polyalkylalkylsiloxane is mixed comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms in an amount sufficient to a composition of redispersible latex powder.
  • the emulsifiers used to emulsify the polyalkylalkylsiloxanes of the invention can be anionic, cationic or nonionic emulsifiers, or mixtures thereof.
  • nonionic emulsifiers that may be mentioned are ethoxylated fatty alcohols.
  • anionic emulsifiers that may be mentioned are fatty acid salts. Mention may in particular be made of sodium laurate or potassium laurate.
  • Polyvinyl alcohol can also be used to emulsify the polyalkylalkylsiloxanes of the invention. By sufficient amount of polyalkylalkylsiloxane, is meant within the meaning of the invention a sufficient amount of polyalkylalkylsiloxane to provide good water repellency to the construction composition.
  • the sufficient amount is between 0.001% and 3% by dry weight of the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having 6 and 18 carbon atoms relative to the total weight of the building composition.
  • this amount is between 0.01% and 0.5% by dry weight of the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms relative to the total weight of the construction composition.
  • this amount is between 0.03% and 0.2% by dry weight of the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms relative to the total weight of the construction composition. This sufficient amount is small, which has the advantage of avoiding deteriorating the adhesion properties of the additive mineral binders.
  • the sufficient amount is between 0.1% to 20% by weight of polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms relative to the weight of the dry latex.
  • this amount is between 1% to 10% by weight of polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms relative to the weight of the dry latex.
  • this amount is between 3% to 7% by weight of polyalkylalkylsiloxane comprising at least one graft hydrocarbon having between 6 and 18 carbon atoms relative to the weight of the dry latex.
  • the redispersible latex powder used can be very varied in nature.
  • a latex composition in the form of a redispersible powder comprising: at least one polymer insoluble in water, from 0 to 35% by weight, relative to the total weight of the polymer, of at least one protective colloid, 0 to 30% by weight, relative to the total weight of the polymer, of anti-caking agents, and from 0.1 to 20% by weight, relative to the total weight of the polymer of the polyalkylalkylsiloxane comprising at least one hydrocarbon graft having between 6 and 18 carbon atoms.
  • Suitable water-insoluble polymers are homo- or copolymers which are in the form of an aqueous dispersion or which can be transformed into an aqueous dispersion, and then can be formed into a powder by spray drying.
  • the average particle size of the powder is preferably from 1 to 1000 ⁇ m, more preferably from 10 to 700 ⁇ m, and particularly from 50 to 500 ⁇ m.
  • the preferred water-insoluble polymers are obtained by polymerization of monomers chosen from:
  • monomers can be copolymerized with each other or with other ethylenically unsaturated monomers, to form homopolymers, copolymers or terpolymers.
  • monomers copolymerizable with vinyl acetate and / or acrylic esters and / or styrene mention may be made of ethylene and olefins such as isobutene; vinyl esters of saturated monocarboxylic acids, branched or not, having from 1 to 12 carbon atoms, such as propionate, "Versatate” (registered trademark for esters of branched acids Cg-Cj -i), pivalate , vinyl laurate; esters of unsaturated mono- or dicarboxylic acids having 3 to 6 carbon atoms with alkanols having 1 to 10 carbon atoms, such as maleates, methyl, ethyl, butyl, ethylhexyl fumarates; vinyl aromatic monomers such as
  • acrylamide ethylenically unsaturated carboxylic acids or dibasic acids, preferably acrylic acid or methacrylic acid, ethylenically unsaturated sulfonic acids and salts thereof, preferably vinylsulfonic acid or 2-acrylamido-2-methylpropanesulfonic acid (AMPS), or sodium methallylsulfonate .
  • APMS 2-acrylamido-2-methylpropanesulfonic acid
  • These monomers are added in an amount of between 0.05 and 10.0% by weight, relative to the total weight of the monomers. These monomers are added during the polymerization; they ensure the colloidal stability of the latex. Generally, the polymerization of the monomers is carried out as an emulsion in the presence of an emulsifier and of a polymerization initiator.
  • the monomers used can be introduced as a mixture or separately and simultaneously into the reaction medium, either before the start of the polymerization in one go, or during the polymerization by successive fractions or continuously.
  • the emulsifiers which can be used are anionic, cationic or nonionic emulsifiers.
  • emulsifying agent use is generally made of the conventional anionic agents represented in particular by alkylsulfates, alkylsulfonates, alkylarylsulfates, alkylarylsulfonates, arylsulfates, arylsulfonates, sulfosuccinates, alkali metal alkylphosphates, salts of l hydrogenated abietic acid or not.
  • the emulsion polymerization initiator is more particularly represented by hydroperoxides such as hydrogen peroxide, cumene hydroperoxide, diisopropylbenzene hydroperoxide, paramenthane hydroperoxide, tert-butyl hydroperoxide, and by persulfates such as sodium persulfate, potassium persulfate, ammonium persulfate. It is used in an amount between 0.05 and 2% by weight relative to the total of the monomers.
  • a reducing agent such as sodium bisulfite or formaldehyde sulfoxylate, polyethyleneamines, sugars (dextrose, sucrose), metal salts.
  • the amount of reducing agent used varies from 0 to 3% by weight relative to the total weight of the monomers.
  • the reaction temperature is generally between 0 and 100 ° C, and preferably between 30 and 90 ° C.
  • a transfer agent can be used in proportions ranging from 0 to 3% by weight relative to the monomer (s), generally chosen from mercaptans such as N-dodecylmercaptan or tertiododecylmercaptan, cyclohexene, halogenated hydrocarbons such as chloroform, bromoform, carbon tetrachloride. It adjusts the length of the molecular chains. It is added to the reaction medium either before the polymerization, or during polymerization.
  • the latex composition in the form of a redispersible powder comprises 0 to 35% by weight, preferably 3 to 15% by weight, of protective colloid, relative to the total weight of the water-insoluble polymer .
  • Suitable protective colloids are polyvinyl alcohols and derivatives thereof, for example vinyl alcohol-vinyl acetate copolymers, polyvinylpyrrolidones, polysaccharides, for example starches (amylose and amylopectin), cellulose, guar, l tragacantic acid, dextran, alginates and their carboxymethyl, methyl, hydroxyethyl or hydroxypropyl derivatives, proteins, for example casein, soy proteins, gelatins, synthetic polymers, for example poly (meth ) acrylic, poly (meth) acrylamide, polyvinylsulfonic acids, and water-soluble copolymers thereof, melamine-formaldehyde sulfonates, naphthalene-formaldehyde sulfonates, styrene / maleic acid copolymers, and ether copolymers vinylic-maleic acid.
  • Polyvinyl alcohol is particularly preferred as a protective colloid
  • the preferred anti-caking agents are aluminum silicates, calcium or magnesium carbonates, or mixtures thereof, silicas, hydrated alumina, bentonite, talc, or dolomite mixtures and talc, or calcite and talc, kaolin, barium sulfate, titanium oxide, or calcium sulfoaluminate (satin white).
  • the particle size of the anti-caking agents is preferably in the range of 0.001 to 0.5 mm.
  • the redispersible latex powder is preferably prepared by spray drying the aqueous polymer dispersion. This drying is carried out in conventional spray drying systems, using atomization by means of single, double or multiple liquid nozzles or a rotating disc.
  • the discharge temperature chosen is generally in the range of 50 to 100 ° C, preferably 60 to 90 ° C, depending on the system, the glass transition temperature of the latex, and the degree of drying desired.
  • an anti-caking agent in the spraying column together with the aqueous polymer dispersion, which results in a preferable deposit of the anti-caking agent on the particles of the dispersion.
  • the present invention also relates to a composition of mineral binders with improved water-repellent properties which can be obtained by one of the methods described above.
  • the present invention also relates to the use of this mineral binder composition to increase the water repellency of construction compositions.
  • the building compositions can in particular be coating compositions or mineral building mixes for producing mineral components.
  • the coating compositions are used in particular for mineral substrates.
  • the coating compositions can be aqueous, or in powder form. Preferably they are in powder form.
  • Examples of coating compositions are mineral paints, lime paints, silicate paints, lime emulsion paints, silicate emulsion paints, base coats, plasters, for example mineral plasters and silicate plasters, load-bearing coatings high based on dispersions, loads applied by brush, reinforcing compositions, trowel-coated compounds, and tile adhesives, monolayer coatings and also mortars, for example waterproofing mortars, mortars for exterior thermal insulation systems or joint mortars, or plaster-based coatings.
  • mineral construction mixtures are any of the crude mixtures which can be used to produce mineral components which are themselves used in civil engineering works, and are part of engineering works civilian, especially if they are exposed to the weather or require another type of waterproofing.
  • components are precast bricks and concrete roofing slabs, fiber-loaded concrete panels, and also other finished products or insulating components.
  • Mineral construction mixtures can be composed of concrete, lime, cement, quartz sand, clay minerals, such as calcium silicate, porous concrete, bricks, or otherwise of fiber-based construction mixtures in which the fibers are natural fibers or synthetic fibers.
  • Suitable natural fibers are mineral fibers, such as rock wool, quartz fibers, or ceramic fibers, or vegetable fibers, such as cellulose.
  • cellulose fibers are jute fibers, coconut fibers, and hemp fibers, or fibers derived from paper, cardboard, or recycled paper.
  • suitable synthetic fibers are glass fibers, polymer fibers, and carbon fibers.
  • the mineral construction compositions can also comprise organic additives, for example cellulose ethers or plasticizers. Other organic additives which can be used in mineral construction compositions are known to the person skilled in the art.
  • the amounts of mineral binder compositions with improved water-repellent properties generally used in construction compositions are between 0.01 and 80% by weight.
  • the amounts of mineral binder compositions with improved water-repellent properties preferably used in the mortar compositions are between 30 and 50% by weight.
  • Example 1 Preparation 1 (liquid): an emulsion of VeoValO acetate / versatate latex (70/30) stabilized with polyvinyl alcohol of dry extract 50% is mixed with various water-repellent additives (the list of which is given in table 1 ), also in the form of emulsions. Water is added so as to have a dry extract of 5.3%.
  • Preparation 2 a mortar formula (silicic fillers) having the following composition is prepared:
  • Formula 1 A mortar is prepared by adding preparation 2 to 19 parts of preparation 1. The proportions indicated correspond to a mortar having 100 parts of dry matter and a mixing ratio of 18%.
  • the mortar is mixed and then introduced into a cylindrical mold (50 g of mortar).
  • the whole is placed in an enclosure whose relative humidity and CO 2 content are controlled by a solution of supersaturated sodium bromide containing 1 M soda.
  • the samples are demolded after 1 day of packaging; then, after 7 days of conditioning, the curved face of the cylinders is coated with a mixture of paraffin.
  • M DT silicone resin emulsion consisting of 15% by weight of units (Me) 3 SiO 1/2 (M), 25% by weight of units (Me) 2 SiO 2/2 (D) and 60% by weight of patterns Me Si0 32 (T).
  • Emulsifier PVA, dry extract 54% by weight.
  • PDMS Polydimethylsiloxane oil emulsion
  • MDT silicone resin emulsion consisting of 15% by weight of units (Me) 3 SiO 1/2 (M), 25% by weight of units (Me) 2 SiO 2/2 (D) and 60% by weight of units Me SiO 32 (T).
  • Emulsifier non-ionic TA; dry extract: 60.4% by weight.
  • Emulsifier non-ionic TA; dry extract: 56% by weight.
  • MDT 15% 25% 60% designates the percentage of silicon atoms linked to 1 (M) 2
  • PVA polyvinyl alcohol
  • Non-ionic RT non-ionic surfactant
  • Mortar formulas are prepared according to the compositions described in Example 1.
  • the mortars are mixed and then poured into standardized molds size 4 * 4 * 16 cm and passed on a shock table. They are removed from the mold the next day and then placed for 28 days in a room conditioned at 23 ° C and 55% relative humidity. They are then coated with paraffin on 4 of their faces forming a crown and including the 2 square faces.
  • the samples are then soaked by one of their free sides in deionized water. The quantity of water taken up by capillarity (expressed in grams) is measured by weighing after 30 min and 240 min.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
  • Sealing Material Composition (AREA)
EP04717663A 2003-03-10 2004-03-05 Verfahren zur erhöhung der wasserabweisende eigenschaft von bindemittelzusammensetzungen, die dadurch hergestellte zusammensetzungen und deren verwendungen Withdrawn EP1601628A2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0302921 2003-03-10
FR0302921A FR2852312B1 (fr) 2003-03-10 2003-03-10 Un procede pour augmenter l'hydrofugation de compositions de liants mineraux ainsi que les compositions susceptibles d'etre obtenues par ce procede et leurs utilisations
PCT/FR2004/000528 WO2004080909A2 (fr) 2003-03-10 2004-03-05 Un procede pour augmenter l'hydrofugation de compositions de liants mineraux ainsi que les compositions susceptibles d'etre obtenues par ce procede et leurs utilisations

Publications (1)

Publication Number Publication Date
EP1601628A2 true EP1601628A2 (de) 2005-12-07

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EP04717663A Withdrawn EP1601628A2 (de) 2003-03-10 2004-03-05 Verfahren zur erhöhung der wasserabweisende eigenschaft von bindemittelzusammensetzungen, die dadurch hergestellte zusammensetzungen und deren verwendungen

Country Status (5)

Country Link
US (1) US20070172658A1 (de)
EP (1) EP1601628A2 (de)
BR (1) BRPI0408185A (de)
FR (1) FR2852312B1 (de)
WO (1) WO2004080909A2 (de)

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DE102004057996A1 (de) 2004-12-01 2006-06-08 Wacker Polymer Systems Gmbh & Co. Kg Hydrophobierendes Additiv
EP1950266A1 (de) * 2006-12-27 2008-07-30 Services Pétroliers Schlumberger Feste, auf Latexpulver basierende, Gasmigrationskontrolladditive für Zementierungs Anwendungen
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WO2004080909A3 (fr) 2004-11-11
FR2852312A1 (fr) 2004-09-17
FR2852312B1 (fr) 2007-04-06
US20070172658A1 (en) 2007-07-26
WO2004080909A2 (fr) 2004-09-23

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