WO2020108762A1 - Procédé d'hydrofugation de matériau léger minéral - Google Patents

Procédé d'hydrofugation de matériau léger minéral Download PDF

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Publication number
WO2020108762A1
WO2020108762A1 PCT/EP2018/083030 EP2018083030W WO2020108762A1 WO 2020108762 A1 WO2020108762 A1 WO 2020108762A1 EP 2018083030 W EP2018083030 W EP 2018083030W WO 2020108762 A1 WO2020108762 A1 WO 2020108762A1
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WIPO (PCT)
Prior art keywords
expanded clay
cream
alkyl
weight
radicals
Prior art date
Application number
PCT/EP2018/083030
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German (de)
English (en)
Inventor
Steffen DÖRRICH
Daniel Schildbach
Original Assignee
Wacker Chemie Ag
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Publication date
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Priority to PCT/EP2018/083030 priority Critical patent/WO2020108762A1/fr
Publication of WO2020108762A1 publication Critical patent/WO2020108762A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/10—Coating or impregnating
    • C04B20/1051—Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
    • 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
    • C04B30/00—Compositions for artificial stone, not containing binders
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4584—Coating or impregnating of particulate or fibrous ceramic material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61—Coating or impregnation
    • 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
    • C04B2111/20—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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures

Definitions

  • the invention relates to the hydrophobization of granules made of mineral lightweight building material with a cream which contains Ci-Ci2-alkyl-Ci-C ö alkoxysilanes.
  • Granules made of mineral lightweight building materials, such as expanded clay and perlite, are hydrophobicized as insulation materials for many applications. As a water repellent for mineral
  • Siliconate solutions Water-based siloxane, silane emulsions and siliconate solutions need to be homogeneous on the
  • Treatment absorbs a lot of water. Therefore the material has to be dried afterwards. This requires high
  • hydrophobized mineral lightweight building material is transported for use when wet. This leads to logistics costs due to the significantly higher weight. If necessary, that is
  • EP0101816 describes the hydrophobization of absorbent
  • Organic solvent-based silane solutions must also be used in a highly diluted form. Also point out organic solvents have many other known disadvantages such as flash point, VOC, environmental pollution, costs, etc.
  • EP819665A describes hydrophobizing creams based on
  • Alkylalkoxysilanes used to impregnate absorbent building materials.
  • the creams are applied with a squeegee, brush or by spraying.
  • the active substance content of these creams is preferably 60 to 95%.
  • the invention relates to a process for the hydrophobization of granules made of mineral lightweight building material, in which the mineral lightweight building material with a cream in a container
  • the cream is only added to the container and does not have to be applied homogeneously and evenly. Therefore, only a simple and inexpensive dosing equipment is required.
  • Spray systems are not required.
  • the cream can be used as supplied and does not need to be diluted on site or otherwise pretreated. This means there is no loss of input materials in the event of unplanned changes and shutdowns in production.
  • the advantage of the cream is that, due to its viscosity, it is not quickly absorbed by the material to be hydrophobized, but can only spread over the gas phase after breaking the emulsion. One dose per container is sufficient.
  • the mineral lightweight building material is preferably mixed with a single portion of cream.
  • a pure liquid silane runs completely down in the container and is there from the mineral to be made hydrophobic
  • Pure silane has a significantly lower flash point than in cream form, which significantly improves the storage and handling of creams.
  • the process does not require drying of the treated mineral lightweight building material.
  • the waterproofing can be carried out directly in the final sales container. There is no additional response time to consider; the hydrophobization takes place during normal
  • the container in which the mineral lightweight building material is mixed with the cream is preferably gas-tight
  • the mineral lightweight building materials which can be used in the process have bulk densities of preferably 30 to 1000 kg / m 3 , in particular 50 to 800 kg / m 3 .
  • Preferred mineral lightweight building materials are expanded clay, perlite, vermiculite, expanded glass and foam glass granulate.
  • the preferably used mineral lightweight building materials preferably have the following bulk densities:
  • Perlite 40 to 150 kg / m 3 , in particular 50 to 100 kg / m 3 .
  • Water-containing preparations which are emulsion systems from an oil phase which is not miscible with water, namely Ci-Ci2-alkyl-Ci-C6-alkoxysilanes as active ingredients (A) and emulsifiers, are referred to as creams. This is called a hydrophilic oil-in-water (O / W) type cream.
  • the aqueous creams preferably have a viscosity of 300 to 5000 mPa-s, in particular 400 to 1500 mPa-s, measured at 25 ° C. with an air-bearing rheometer MCR3XX from Anton Paar, deformation sweep up to 100%, 10 Hz and a shear rate from 250 s _1 .
  • the Ci-Ci2 ⁇ alkyl-Ci-C6 ⁇ alkoxysilanes preferably have 1 or 2 identical or different, unsubstituted or halogen-substituted, monovalent Ci-Ci2 ⁇ alkyl radicals bonded via SiC and the remaining radicals are identical or different C1-C6 alkoxy radicals.
  • Ci-Ci2 ⁇ alkyl radicals are the methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, tert. -Butyl-, n-pentyl-, iso-pentyl-, neo-pentyl-, tert. Pentyl residue;
  • Hexyl radicals such as the n-hexyl radical
  • Heptyl residues such as the n-heptyl residue
  • Octyl radicals such as the n-octyl radical and iso-octyl radicals, such as the 2, 2, 4-trimethylpentyl radical
  • Nonyl radicals such as the n-nonyl radical
  • Decyl radicals such as the n-decyl radical and dodecyl radicals, such as the n-dodecyl radical
  • Cycloalkyl radicals such as cyclopentyl
  • Ci-Ci2-alkyl radicals examples include alkyl radicals substituted with fluorine, chlorine, bromine and iodine atoms, such as the 3, 3, 3-trifluoro-n-propyl radical, the 2, 2, 2, 2 ', 2', 2 '- hexafluoroisopropyl radical and the heptafluoroisopropyl radical.
  • Ci-Cs-alkyl radicals are particularly preferred.
  • Ci-C ß alkoxy radicals are methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, iso-butoxy, sec. -Butoxy-, tert. -Butoxy residue; Pentyloxy radicals, such as the n-pentyloxy radical and hexyloxy radicals, such as the n-hexyloxy radical.
  • the ethoxy radicals are particularly preferred.
  • alkoxy radicals can be substituted with halogen atoms, but this is not preferred.
  • the aqueous creams contain at least one per se
  • Alkyl sulfates especially those with a chain length of 8 to 18 carbon atoms, alkyl and alkaryl ether sulfates with 8 to 18 carbon atoms in the hydrophobic radical and 1 to 40 ethylene oxide (EO) or propylene oxide (PO) units.
  • EO ethylene oxide
  • PO propylene oxide
  • sulfonates especially alkyl sulfonates with 8 to 18 carbon atoms, alkylarylsulfonates with 8 to 18 carbon atoms, taurides, esters and half-esters of sulfosuccinic acid with monohydric alcohols or alkylphenols with 4 to 15 carbon atoms; optionally these alcohols or alkylphenols can also be ethoxylated with 1 to 40 EO units.
  • partial phosphoric acid esters and their alkali and ammonium salts especially alkyl and alkaryl phosphates with 8 to 20 carbon atoms in the organic radical, alkyl ether or alkaryl ether phosphates with 8 to 20 carbon atoms in the alkyl or alkaryl radical and 1 to 40 EO- Units .
  • Polyvinyl alcohol which still has 5 to 50%, preferably 8 to 20% vinyl acetate units, with a
  • Alkyl polyglycol ethers preferably those with 8 to
  • Alkylaryl polyglycol ethers preferably those with 8 to 40 EO units and 8 to 20 C atoms in the alkyl and
  • Oligoglycoside residue with an average of o 1 - 10 hexose or
  • Pentose units or mixtures thereof.
  • Natural products and their derivatives such as lecithin, lanolin, saponins, cellulose; Cellulose alkyl ether and
  • Carboxyalkyl celluloses the alkyl groups of which each have up to 4 carbon atoms.
  • Linear organo (poly) siloxanes containing polar groups in particular those with alkoxy groups with up to 24 C atoms and / or up to 40 EO and / or PO groups.
  • Alkyloxazolinium salts in particular those whose alkyl chain has up to 18 carbon atoms, especially the halides, sulfates, phosphates and acetates.
  • ampholytic emulsifiers are particularly suitable as ampholytic emulsifiers:
  • Long-chain substituted amino acids such as N-alkyl-di- (aminoethyl-) glycine or N-alkyl-2-aminopropionic acid salts.
  • Betaines such as N- (3-acylamidopropyl) -N, N-dimethylammonium salts with a C8-Cl8-acyl radical and alkyl imidazolium betaines.
  • Preferred emulsifiers are nonionic emulsifiers, in particular the alkyl polyglycol ethers listed above under 6, the addition products of alkyl amines with ethylene oxide or propylene oxide listed under 9, the alkyl polyglycosides listed under 11 and the polyvinyl alcohol listed under 5.
  • Particularly preferred polyvinyl alcohols still contain 5 to 20%, in particular 10 to 15%, vinyl acetate units and preferably have one
  • Degree of polymerization from 500 to 3000, in particular from 1200 to 2000.
  • the cream can contain other ingredients. Further constituents are, for example, those containing alkoxy groups
  • Organopolysiloxane Organopolysiloxane, organopolysiloxane with aminoalkyl groups, organic solvents, fillers, buffer substances, fungicides, Bactericides, algicides, microbicides, odorants, corrosion inhibitors and defoamers.
  • a preferred further component is alkoxy groups
  • organopolysiloxane preferably with a
  • the organopolysiloxanes can additionally contain hydroxyl groups that bind to the
  • the organopolysiloxanes preferably have a viscosity of at most 2000 mPa. s on.
  • organopolysiloxanes composed of units of the general formula (I) are particularly suitable.
  • R denotes identical or different monovalent, optionally halogenated gensubstituator bonded via SiC C] _-C ⁇ 2 hydrocarbon radicals
  • z means 0, 1, 2 or 3, on average 0.0 to 0.5, with the proviso that the sum of x, y and z is at most 3.5.
  • Ethylphenyl residues Aralkyl radicals, such as the benzyl radical, the alpha and the ⁇ -phenylethyl radical.
  • the unsubstituted C 1 -C 6 -alkyl radicals and the phenyl radical are particularly preferred.
  • radicals R can be replaced by hydrogen atoms bonded directly to silicon atoms. However, this is not preferred.
  • radicals R ⁇ are methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, and tert. Butyl residue;
  • Pentyl radicals such as the n-pentyl radical and hexyl radicals, such as the n-hexyl radical, the methyl and ethyl radicals being particularly preferred.
  • x has an average value of 0.9 to 1.2.
  • Y is preferably from 0.01 to 1.2.
  • z has an average value of 0.0 to
  • organosiloxanes are those which are obtained by reacting methyltrichlorosilane and, if appropriate, a C ] - Cg-alkyltrichlorosilane and optionally dimethyldichlorosilane or phenyltrichlorosilane with methanol or ethanol in water
  • a preferred further component is organopolysiloxane with aminoalkyl groups.
  • the organopolysiloxane with aminoalkyl groups is preferably composed of units of the general formula (III)
  • R2 same or different monovalent, from basic
  • Nitrogen-free, optionally halogen-substituted, SiC-bonded C -C20 K o I L l en water residues means
  • R.3 is the same or different monovalent, optionally halogen-substituted, SiC-bonded basic nitrogen-containing C 1 -C 6 -gg hydrocarbon radicals,
  • R ⁇ can be the same or different and hydrogen atom or Ci-Cg-alkyl radicals
  • c 0, 1, 2 or 3
  • the amine number denotes the number of ml of 1-N-HC1 that are required to neutralize 1 g of organopolysiloxane.
  • the amine number of the organopolysiloxane is preferably at least 0.1, in particular at least 0.2, and preferably at most 8, in particular at most 4.
  • Examples and preferred examples of the radical R ⁇ are listed above for the radical R. In particular, the methyl and isooctyl radicals are preferred.
  • each silicon atom is a
  • Hydrogen atom is bound, also a hydrocarbon radical, in particular a methyl radical.
  • the radical R 1 is preferably a radical of the
  • R5 can be the same or different and is hydrogen or monovalent, optionally substituted C 2 -C] _Q-
  • R® is a divalent C ⁇ -C ⁇ hydrocarbon residue.
  • radical R ⁇ examples are those given for the radical R.
  • hydrocarbon radicals and hydrocarbon radicals substituted with amino groups such as aminoalkyl radicals, the aminoethyl radical being particularly preferred.
  • the radical R ⁇ is preferably divalent
  • radical R 6 examples are methylene, ethylene, propylene, butylene, cyclohexylene, octadecylene, phenylene and
  • radicals R ⁇ are
  • alkyl radicals R 1 also apply in full to the radical R®.
  • Examples and preferred examples of the remainder are listed above under remainder R ⁇ -.
  • remainder R ⁇ - are listed above under remainder R ⁇ -.
  • Methyl and the ethyl radical preferred.
  • the preferred average value for a is 0 to 2, especially 0 to 1.8.
  • the preferred average value for b is 0.1 to 0.6, especially 0.15 to 0.30.
  • the preferred average value for c is 0 to 0.8, especially 0.01 to 0.6.
  • the organopolysiloxanes with aminoalkyl groups preferably have a viscosity of 5 to 5000, in particular 100 to 3000 mPa ⁇ s at 25 ° C.
  • Organopolysiloxanes with aminoalkyl groups can, in a known manner, for example by equilibrating or condensing amino-functional silanes with organopolysiloxanes
  • the amount of Ci-Ci2-Alkyl-Ci-C6-alkoxysilane in the aqueous creams is preferably 40 to 90 wt .-%, in particular 60 to 80 wt. -%.
  • the amount of organopolysiloxane with aminoalkyl groups in the aqueous creams is preferably 0.1 to 20% by weight, in particular 0.2 to 10% by weight.
  • the amount of emulsifier in the aqueous creams is the amount of emulsifier in the aqueous creams.
  • organopolysiloxane containing organopolysiloxane, organopolysiloxane with
  • Aminoalkyl groups is at most 2, in particular 0.5,% by weight of the total amount of the creams.
  • aqueous creams are made by conventional methods
  • Aminoalkyl groups and emulsifier can be produced.
  • Emulsifier solution emulsified to a creamy one
  • alkoxysilane Ci-Ci2-alkyl-Ci- C 6 and, optionally, organopolysiloxane is also preferred with
  • the emulsifier is premixed and emulsified into the water / emulsifier mixture until it has a cream-like consistency.
  • the aqueous creams are preferably produced in pressure emulsifying machines, colloid mills or in particular in a high-speed stator-rotor stirring device according to Prof.
  • Any building material with which the cream is added can be any.
  • it is a kettle, sack, or barrel.
  • the container preferably holds at least 1 liter to 10 m 3 , in particular 20 liters to 4 m 3 .
  • granules are made out per 100 parts by weight
  • mineral lightweight building material 0.015 to 0.5 parts by weight, in particular 0.03 to 0.2 parts by weight of cream used.
  • the storage preferably lasts from 2 hours to 30 days, in particular from 10 hours to 10 days.
  • the temperature during storage is preferably 1 ° C to 40 ° C, in particular 5 ° C to 30 ° C.
  • hydrophobized granulate made of mineral lightweight building material it can be dried.
  • Expanded clay Leca® 10-20 (https://www.weber.dk/lecar- ecker / . . . lecar-letklinker / lecar-10-20. Html); Bulk density 245 kg / m 3 Perlite: Superlite 0/3 according to DIN EN 13055-1 available from Knauf Aquapanel, Germany
  • Emulsion 1 Aqueous, 60% by weight (solids) emulsion of a polydimethylsiloxane oil which has silanol groups in a, w position and a viscosity between 50 to
  • Solution 1 aqueous solution of potassium methyl siliconate with a solids content of 55%, a density of 1.4 g / cm 3 (at 25 ° C.), a pH of 13-14 and a K2O content of 20% by weight.
  • Silane 1 Mixture of isomeric octyltriethoxysilanes with iso-octylsilane as the main component (CAS 35435-21-3) and a flash point of 42 ° C (ISO 3679).
  • Emulsion 2 aqueous, 40% by weight (solid content)
  • BigBag 1000 x 1000 x 1550 mm; Material body PP 200 g / m 2 + coating PE 25 g / m 2 , material cover PP 80 g / 2 + coating PE 30 g / m 2 , material bottom PP 200 g / m 2 + coating PE 25 g / m 2 ; Nominal load capacity 1250 kg; with additional PE liner; available from the company
  • Perforated sack 520 x 800 x 180 mm; Material outer layer paper white (80 g), second layer PE (20 pm), inner layer paper brown (70 g), weight 274 g; available from the Mondi, Erich-Hausmann-Strasse 1, 4687 Trebsen,
  • Ci ⁇ Ci2 ⁇ alkyl-Ci ⁇ C6 ⁇ alkoxysilane The following is used as Ci ⁇ Ci2 ⁇ alkyl-Ci ⁇ C6 ⁇ alkoxysilane:
  • organopolysiloxane with aminoalkyl groups are used as organopolysiloxane with aminoalkyl groups:
  • N condensation product of an a, w - dihydroxymethylpolysiloxane and N- (2-aminoethyl) -3-aminopropyltrimethoxysilane in the presence of KOH with a in the terminal units each having a Si-bonded hydroxyl group
  • E2 Isotridecyl alcohol glycol ether with 10 ethylene oxide units, 80% in water.
  • Demineralized water is demineralized water
  • Expanded clay was dried at 40 D C in a drying cabinet to constant weight. Then the water intake was
  • 500 g expanded clay was placed in a bucket. 0.25 g of cream 1 (0.05% by weight, based on expanded clay) was added in one portion to the bottom of a bucket. 500 g of expanded clay was added (no stirring) and the bucket was covered with a lid
  • the container was stored at 25 ° C for one week.
  • the container was stored at 25 ° C for one week.
  • the water repellency was then determined to be 87 ml in accordance with ASTM 303-77.
  • Drying cabinet dried to constant weight.
  • the water repellency was then determined to be 184 ml in accordance with ASTM 303-77.
  • Emulsion 2 (0.19% by weight with respect to Superlite 0/3) was added to Perlite in one portion (no stirring) and the bucket was closed with a lid. The container was stored at 25 ° C for one week. The perlite was then dried to constant weight at 40 ° C. in a drying cabinet. The water repellency was then determined to be 122 ml in accordance with ASTM 303-77.
  • Particle is then superhydrophobic. But at low doses, the concentration of residual active ingredient is no longer sufficient to distribute itself and thus the entire expanded clay /
  • the active ingredient is in cream form on the
  • Expanded clay absorbs only slowly and evaporates evenly, thus ensuring a uniform and homogeneous hydrophobization of the entire expanded clay / perlites / mineral
  • Lightweight materials This also works reliably at lower temperatures (e.g. 5 ° C) and in larger containers (e.g. 1 m 3 ), provided that they are airtight.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un procédé d'hydrofugation de granulat constitué d'un matériau léger minéral, procédé selon lequel le matériau léger minéral est mélangé à une crème qui contient 1) un C1-C12-alkyl-C1-C6-alcoxysilane, 2) de l'eau et 3) un émulsifiant, puis il est entreposé pendant au moins une heure.
PCT/EP2018/083030 2018-11-29 2018-11-29 Procédé d'hydrofugation de matériau léger minéral WO2020108762A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/EP2018/083030 WO2020108762A1 (fr) 2018-11-29 2018-11-29 Procédé d'hydrofugation de matériau léger minéral

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PCT/EP2018/083030 WO2020108762A1 (fr) 2018-11-29 2018-11-29 Procédé d'hydrofugation de matériau léger minéral

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WO2020108762A1 true WO2020108762A1 (fr) 2020-06-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0101816A1 (fr) 1982-07-31 1984-03-07 Hüls Troisdorf Aktiengesellschaft Imprégnation profonde du béton
US4889747A (en) * 1988-05-02 1989-12-26 Pcr, Inc. Hydrophobic expanded perlite compositions and process for preparing the same
EP0819665A1 (fr) 1996-07-11 1998-01-21 Wacker-Chemie GmbH Crèmes aqueuses en composés organosiliciés pour rendre hydrophobe des matériaux de construction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0101816A1 (fr) 1982-07-31 1984-03-07 Hüls Troisdorf Aktiengesellschaft Imprégnation profonde du béton
US4889747A (en) * 1988-05-02 1989-12-26 Pcr, Inc. Hydrophobic expanded perlite compositions and process for preparing the same
EP0819665A1 (fr) 1996-07-11 1998-01-21 Wacker-Chemie GmbH Crèmes aqueuses en composés organosiliciés pour rendre hydrophobe des matériaux de construction

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