WO2007099004A1 - Mélanges de matériaux de construction contenant des additifs sous forme de microparticules à gonflement ionique - Google Patents

Mélanges de matériaux de construction contenant des additifs sous forme de microparticules à gonflement ionique Download PDF

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Publication number
WO2007099004A1
WO2007099004A1 PCT/EP2007/050879 EP2007050879W WO2007099004A1 WO 2007099004 A1 WO2007099004 A1 WO 2007099004A1 EP 2007050879 W EP2007050879 W EP 2007050879W WO 2007099004 A1 WO2007099004 A1 WO 2007099004A1
Authority
WO
WIPO (PCT)
Prior art keywords
microparticles
polymeric
acid
voided
monomers
Prior art date
Application number
PCT/EP2007/050879
Other languages
German (de)
English (en)
Inventor
Jan Hendrik Schattka
Holger Kautz
Gerd LÖHDEN
Original Assignee
Evonik Röhm Gmbh
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 Evonik Röhm Gmbh filed Critical Evonik Röhm Gmbh
Publication of WO2007099004A1 publication Critical patent/WO2007099004A1/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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641—Polyacrylates; Polymethacrylates
    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
    • C04B16/085—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons expanded in situ, i.e. during or after mixing the mortar, concrete or artificial stone ingredients
    • 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
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2664—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of ethylenically unsaturated dicarboxylic acid polymers, e.g. maleic anhydride copolymers
    • 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
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0045—Polymers chosen for their physico-chemical characteristics
    • C04B2103/0049—Water-swellable polymers
    • 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
    • C04B2103/0058—Core-shell polymers
    • 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
    • C04B2111/29—Frost-thaw resistance
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249967—Inorganic matrix in void-containing component
    • Y10T428/249968—Of hydraulic-setting material
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/254—Polymeric or resinous material
    • 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
    • Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer

Definitions

  • the present invention relates to the use of polymeric microparticles in hydraulically setting building material mixtures to improve their Frostg. Freeze-thaw resistance.
  • the structure of a cement-bound concrete is traversed by capillary pores (radius: 2 ⁇ m - 2 mm) or gel pores (radius: 2 - 50 nm). Pore water contained therein differs in its state form depending on the pore diameter.
  • a prerequisite for an improved resistance of the concrete during frost and thaw changes is that the distance of each point in the cement stone from the next artificial air pore does not exceed a certain value. This distance is also referred to as the "distance factor” or “powers spacing factor” [TCPowers, The air requirement of frost-resistant concrete, "Proceedings of the Highway Research Board” 29 (1949) 184-202]. Laboratory tests have shown that exceeding the critical "Power spacing factor" of 500 ⁇ m leads to damage to the concrete during frost and thaw cycles. Therefore, in order to achieve this with limited air pore content, the diameter of the artificially introduced air pores must be less than 200-300 ⁇ m [K.Snyder, K. Natesaiyer & K.Hover, The Static and Statistical Properties of Entrained Air voids in concrete: A mathematical basis for air void Systems characterization) "Materials Science of Concrete” VI (2001) 129-214].
  • an artificial air pore system depends largely on the composition and grain size of the aggregates, the type and amount of cement, the concrete consistency, the mixer used, the mixing time, the temperature, but also on the type and amount of the air entraining agent. Under consideration of the appropriate manufacturing rules, their effects can indeed be mastered, however, there may be a large number of undesired impairments, which ultimately leads to the desired air content in the concrete can be exceeded or fallen below and thus adversely affected the strength or frost resistance of the concrete ,
  • Such artificial air pores can not be metered directly, but by the addition of so-called air-entraining agents, the air introduced by mixing is stabilized [L. Du & K.J. Folliard, Mechanism of air entrainment in concrete "Cement & Concrete Research” 35 (2005) 1463-71].
  • Conventional air entraining agents are mostly of a surfactant-like structure and break the air introduced by the mixing into small air bubbles with a diameter as small as possible of 300 ⁇ m and stabilize them in the moist concrete structure. One distinguishes between two types.
  • These hydrophobic salts reduce the surface tension of the water and accumulate at the interface between cement grain, air and water. They stabilize the microbubbles and are therefore found in the hardening concrete on the surfaces of these air pores again.
  • the other type e.g. Sodium lauryl sulfate (SDS) or Natriumdodecylphenylsulfonat - on the other hand forms with calcium hydroxide soluble calcium salts, but show an abnormal solution behavior. Below a certain critical temperature these surfactants show a very low solubility, above this temperature they are very soluble. By preferentially accumulating at the air-water interface, they also reduce the surface tension, thus stabilizing the microbubbles, and are preferably found on the surfaces of these air voids in the hardened concrete.
  • SDS Sodium lauryl sulfate
  • Natriumdodecylphenylsulfonat forms with calcium hydroxide soluble calcium salts, but show an abnormal solution behavior. Below a certain critical temperature these surfactants show a very low solubility, above this temperature they are very soluble.
  • microparticles described therein are characterized in particular by the fact that they have a cavity which is smaller than 200 microns (diameter) and this hollow core consists of air (or a gaseous substance). This also includes porous microparticles of the 100 ⁇ m scale, which can have a multiple of smaller cavities and / or pores.
  • hollow microparticles for artificial air entrainment in concrete, two factors proved detrimental to the enforcement of this technology in the marketplace.
  • the production costs of hollow microspheres according to the prior art are too high and, on the other hand, only with relatively high dosages can a satisfactory resistance of the concrete to frost and thaw cycles be achieved.
  • the present invention was therefore based on the object to provide a means for improving the frost or freeze-thaw resistance for hydraulically setting building material mixtures, which develops its full effectiveness even at relatively low dosages. Another object was to not or not significantly affect the mechanical strength of the building material by this means.
  • this agent should not be affected by shorter or longer mixing and processing times to allow for a concerted dosage of the agent.
  • core / shell microparticles which have a swellable base by bases which are protected by ionic bases (such as sodium, potassium, etc.) - or barium hydroxide) is swollen.
  • Such particles are preferably prepared by emulsion polymerization.
  • these particles of the invention are suitable to give a good resistance to freeze or frost / thaw changes even at very low dosages.
  • These microparticles having a cavity are added to the building material mixture and remain there for a shorter or longer time until they are processed. It has been found that the longer the time that the microparticles remain in the building material mixture, the more the dosage of the microparticles must be before it hardens, if an equal resistance to frost or frost / thaw alternation is to be achieved.
  • the microparticles used consist of polymer particles which have a core (A) and at least one shell (B), wherein the core / shell polymer particles were swollen with the aid of an ionic base.
  • the core (A) of the particle contains one or more ethylenically unsaturated carboxylic acid (derivative) monomers which allow swelling of the core; these monomers are preferably selected from the group of acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid and crotonic acid and mixtures thereof. Acrylic acid and methacrylic acid are particularly preferred.
  • the shell (B) consists predominantly of nonionic, ethylenically unsaturated monomers.
  • Preferred such monomers are styrene, butadiene, vinyltoluene, ethylene, vinyl acetate, vinyl chloride, vinylidene chloride, acrylonitrile, acrylamide, methacrylamide, C1-C12-alkyl esters of (meth) acrylic acid or mixtures thereof.
  • the notation (meth) acrylate as used herein means both methacrylate, e.g. Methyl methacrylate, ethyl methacrylate, etc., as well as acrylate, e.g. Methyl acrylate, ethyl acrylate, etc., as well as mixtures of both.
  • the polymer shell or shell (B) may contain monomers which improve the permeability of the shell for the ionic bases.
  • These may be, for example, acidic monomers such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, fumaric acid, monoesters of fumaric acid, itaconic acid, crotonic acid, maleic acid, monoesters of maleic acid, acrylamidoglycolic acid, methacrylamidobenzoic acid, cinnamic acid, vinylacetic acid, trichloroacrylic acid, 10-hydroxy-2-decenoic acid, A-methacryloxyethyltrimethylic acid, styrenecarboxylic acid, 2- (isopropenylcarbonyloxy) ethanesulfonic acid, 2- (vinylcarbonyloxy) ethanesulfonic acid, 2- (isopropenylcarbonyloxy) -propylsulfonic acid, 2- (vinylcarbony
  • These acidic monomers are preferably added to the polymer shell B in amounts of from 0 to 15% by weight (based on the total monomer mixture of the shell), more preferably amounts of from 0.2 to 8% by weight; most preferred are amounts of from 0.5 to 4% by weight.
  • the permeability can also be improved by hydrophilic nonionic monomers, of which acrylonitrile, (meth) acrylamide, cyanomethylmethacrylate, N-vinylamides, N-vinylformamides, N-vinylacetamides, N-vinyl-N-methylacetamides, Vinyl-N-methylformamide, N-methylol (meth) acrylamide, vinylpyrrolidone, N, N-dimethylpropylacrylamide, dimethylacrylamide, as well as other hydroxyl, amine, amide and / or cyano groups containing monomers or mixtures thereof should be mentioned.
  • hydrophilic nonionic monomers of which acrylonitrile, (meth) acrylamide, cyanomethylmethacrylate, N-vinylamides, N-vinylformamides, N-vinylacetamides, N-vinyl-N-methylacetamides, Vinyl-N-methylformamide, N-methylol (meth)
  • hydrophilic monomers are added to the polymer shell B preferably in amounts of 0 to 25 wt .-% (based on the total monomer mixture of the shell), more preferably amounts of from 0.5 to 15 wt .-%; most preferred are amounts of 1 to 8% by weight.
  • Hydrophilic and acidic monomers together in the composition of the polymer shell (B) preferably constitute not more than 25% by weight (based on the total monomer mixture of the shell); levels between 0.2 and 18% by weight are particularly preferred, with contents between 0.5 and 10% by weight being most preferred.
  • the monomer composition of the core and the shell does not change abruptly, as in an ideally designed core / shell particle, but gradually in two or more steps or in the form of a gradient.
  • the composition of the shells located between core and outer shell is often oriented to the respective adjacent shells, which means that the content of a monomer Mx usually between the content M (x + 1) in the next outer shell (which may also be the outer shell) and the content M (x-1) in the next inner shell (or the core).
  • the compositions of such shells can also be chosen freely, as long as this does not interfere with the production and the ordered structure of the particle.
  • the polymer content of the microparticles used can be from 2 to 98% by weight (weight of polymer based on the total weight of the water-filled particle).
  • polymer contents of 5 to 60 wt .-% particularly preferred are polymer contents of 10 to 40 wt .-%.
  • microparticles according to the invention can preferably be prepared by emulsion polymerization and preferably have an average particle size of 100 to 5000 nm; particularly preferred is an average particle size of 200 to 2000 nm. Most preferred are average particle sizes of 250 to 1000 nm.
  • the mean particle size is determined, for example, by counting a statistically significant amount of particles on the basis of transmission electron micrographs.
  • the microparticles are obtained in the form of an aqueous dispersion. Accordingly, the addition of the microparticles to the building material mixture preferably also takes place in this form.
  • the microparticles are e.g. coagulated and isolated from the aqueous dispersion by conventional methods (eg filtration, centrifuging, sedimentation and decanting) and the particles are subsequently dried.
  • the water-filled microparticles are the building material mixture in a preferred amount of 0.01 to 5 vol .-%, in particular 0.1 to 0.5 vol .-%, added.
  • the building material mixture for example.
  • In the form of concrete or mortar can in this case the usual hydraulically setting binder such.
  • cement lime, gypsum or anhydrite.
  • An essential advantage of using the water-filled microparticles is that only an extremely small air is introduced into the concrete. As a result, significantly improved compressive strengths of the concrete can be achieved. These are about 25-50% above the compressive strengths of concrete obtained with conventional air entrainment. Thus, strength classes can be achieved, which are otherwise adjustable only by a much lower water / cement value (W / Z value). Low W / Z However, values may in turn significantly limit the workability of the concrete.

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

Abstract

La présente invention concerne l'utilisation de microparticules polymères dans des mélanges de matériaux de construction à prise hydraulique pour l'amélioration de la résistance au gel ou plus précisément à l'alternance gel-dégel desdits mélanges.
PCT/EP2007/050879 2006-03-01 2007-01-30 Mélanges de matériaux de construction contenant des additifs sous forme de microparticules à gonflement ionique WO2007099004A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006009823.4 2006-03-01
DE102006009823A DE102006009823A1 (de) 2006-03-01 2006-03-01 Additive Baustoffmischungen mit ionisch gequollenen Mikropartikeln

Publications (1)

Publication Number Publication Date
WO2007099004A1 true WO2007099004A1 (fr) 2007-09-07

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PCT/EP2007/050879 WO2007099004A1 (fr) 2006-03-01 2007-01-30 Mélanges de matériaux de construction contenant des additifs sous forme de microparticules à gonflement ionique

Country Status (4)

Country Link
US (1) US20070204543A1 (fr)
CN (1) CN101028969A (fr)
DE (1) DE102006009823A1 (fr)
WO (1) WO2007099004A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101463112B (zh) * 2007-12-20 2012-08-15 罗门哈斯公司 适合用于有机介质的芯-壳聚合物

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002068557A1 (fr) * 2001-02-07 2002-09-06 Röhm GmbH & Co. KG Matiere de scellement a chaud pour feuilles d'aluminium appliquees contre du polypropylene et du polystyrene
DE10350786A1 (de) * 2003-10-29 2005-06-02 Röhm GmbH & Co. KG Mischungen zur Herstellung von Reaktivschmelzklebstoffen sowie daraus erhältliche Reaktivschmelzklebstoffe
DE102004035937A1 (de) * 2004-07-23 2006-02-16 Röhm GmbH & Co. KG Plastisole mit verringerter Wasseraufnahme
DE102005042389A1 (de) * 2005-06-17 2006-12-28 Röhm Gmbh Heißversiegelungsmasse für Aluminium- und Polyethylenterephthalatfolien gegen Polypropylen-Polyvinylchlorid- und Polystyrolbehälter
DE102005045458A1 (de) * 2005-09-22 2007-03-29 Röhm Gmbh Verfahren zur Herstellung von ABA-Triblockcopolymeren auf (Meth)acrylatbasis
DE102005052130A1 (de) * 2005-10-28 2007-05-03 Röhm Gmbh Spritzbare Akustikmassen
DE102014002621A1 (de) 2014-02-25 2015-08-27 Rent-A-Scientist Gmbh Wintermörtel, sowie Verfahren zur Herstellung und Verwendung desselben

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022633A2 (fr) * 1979-06-26 1981-01-21 Rohm And Haas Company Procédé pour préparer des particules de polymères à couches multiples, produit ainsi obtenu, procédé pour préparer des dispersions aqueuses de ces particules, produit ainsi obtenu, procédé pour préparer des pellicules, compositions pour revêtement et/ou imprégnation, polymères à couches multiples et leur utilisation
EP0654454A1 (fr) * 1993-11-22 1995-05-24 Rohm And Haas Company Poudre de polymère coeur/enveloppe
DE19833062A1 (de) * 1998-07-22 2000-02-03 Elotex Ag Sempach Station Redispergierbares Pulver und dessen wäßrige Dispersion, Verfahren zur Herstellung sowie Verwendung
US6288174B1 (en) * 1995-07-07 2001-09-11 Mitsubishi Rayon Co., Ltd. Powdery material and modifier for cementitious material
WO2007036365A1 (fr) * 2005-09-29 2007-04-05 Construction Research & Technology Gmbh Utilisations de microparticules polymeres dans des melanges de materiaux de construction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE418736B (sv) * 1976-12-23 1981-06-22 Bofors Ab Sett att vid framstellning av ett cementbruk innefattande cement, sand och vatten initiera en indragning av finfordelad luft i bruket
US20040034147A1 (en) * 2002-08-13 2004-02-19 Jsr Corporation Hollow polymer particle, process for producing the same, paper coating composition using the same, coated paper and process for producing the same
FR2861399B1 (fr) * 2003-10-23 2008-08-15 Snf Sas Utilisation de polymeres de structure peigne en billes et compositions ainsi obtenues
DE102006008963A1 (de) * 2006-02-23 2007-08-30 Röhm Gmbh Additive Baustoffmischungen mit sterisch oder elektrostatisch abstoßenden Monomeren in der Schale der Mikropartikel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022633A2 (fr) * 1979-06-26 1981-01-21 Rohm And Haas Company Procédé pour préparer des particules de polymères à couches multiples, produit ainsi obtenu, procédé pour préparer des dispersions aqueuses de ces particules, produit ainsi obtenu, procédé pour préparer des pellicules, compositions pour revêtement et/ou imprégnation, polymères à couches multiples et leur utilisation
EP0654454A1 (fr) * 1993-11-22 1995-05-24 Rohm And Haas Company Poudre de polymère coeur/enveloppe
US6288174B1 (en) * 1995-07-07 2001-09-11 Mitsubishi Rayon Co., Ltd. Powdery material and modifier for cementitious material
DE19833062A1 (de) * 1998-07-22 2000-02-03 Elotex Ag Sempach Station Redispergierbares Pulver und dessen wäßrige Dispersion, Verfahren zur Herstellung sowie Verwendung
WO2007036365A1 (fr) * 2005-09-29 2007-04-05 Construction Research & Technology Gmbh Utilisations de microparticules polymeres dans des melanges de materiaux de construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101463112B (zh) * 2007-12-20 2012-08-15 罗门哈斯公司 适合用于有机介质的芯-壳聚合物

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US20070204543A1 (en) 2007-09-06
CN101028969A (zh) 2007-09-05

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