EP1263854A1 - Composition pulverulente a base de polymeres solubles dans l'eau - Google Patents

Composition pulverulente a base de polymeres solubles dans l'eau

Info

Publication number
EP1263854A1
EP1263854A1 EP01907511A EP01907511A EP1263854A1 EP 1263854 A1 EP1263854 A1 EP 1263854A1 EP 01907511 A EP01907511 A EP 01907511A EP 01907511 A EP01907511 A EP 01907511A EP 1263854 A1 EP1263854 A1 EP 1263854A1
Authority
EP
European Patent Office
Prior art keywords
additives
water
carrier material
building materials
polymer
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Withdrawn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
EP01907511A
Other languages
German (de)
English (en)
Inventor
Steffen Wache
Mathias Degenkolb
Klaus HÖTZL
Jana Kellermann
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.)
Master Builders Solutions Deutschland GmbH
Original Assignee
BASF Construction Polymers 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 BASF Construction Polymers GmbH filed Critical BASF Construction Polymers GmbH
Publication of EP1263854A1 publication Critical patent/EP1263854A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/02—Agglomerated materials, e.g. artificial aggregates
    • C04B18/022—Agglomerated materials, e.g. artificial aggregates agglomerated by an organic binder
    • 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
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/26—Bituminous materials, e.g. tar, pitch
    • 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
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a powdery composition, processes for its preparation and its use in building materials.
  • Polymer admixtures for building materials such as. B. bitumen, mortar and
  • Filling compounds are well known and widely used. Corresponding polymers or polymer mixtures can be added to these products, for example in solid or in liquid and then mostly aqueous form.
  • aqueous polymer solutions are associated with considerable disadvantages, since e.g. B. their storage is not unproblematic; namely they must not come into contact with corrosion-sensitive metals and are also sensitive to excessive heating and frost.
  • aqueous polymer solutions must be protected against infestation by microorganisms, which means the addition of
  • aqueous polymer solutions for the modification of hot building materials, such as bitumen or asphalt, is particularly problematic since an aqueous polymer solution can only be incorporated very slowly due to the spontaneous development of water vapor that occurs. There is also an increased risk of accidents due to spraying and delay in boiling.
  • aqueous polymer solutions can be completely ruled out in areas of application in which the polymers are required in factory-made dry mixtures. For the reasons mentioned, it is therefore often sensible to incorporate polymers or polymer mixtures in solid form, usually as a powder, into the building materials to be modified.
  • powders In addition to logistical and economic advantages (transport of water), powders also have a number of technical advantages over aqueous preparations.
  • the stabilization before infestation with microorganisms by adding biocides is eliminated, as is the u. U. elaborate measures for tank hygiene.
  • temperatures used for spray drying (up to 200 ° C) have a disadvantageous effect on the polymers to be dried in this way.
  • temperature instability of the polymers can be observed under the conditions of spray drying, which under certain circumstances leads to insoluble residues when the powders are redissolved in water.
  • the spray drying process can lead to different particle size distributions of the powders produced in this way, which has a disadvantageous effect on the dissolving behavior of these powders in aqueous building material systems and can thus negatively influence the product quality of building material mixtures.
  • Condensation products can cause high temperatures at a corresponding pH value to cause resin changes, e.g. B. lead alkaline further condensation.
  • the by-products formed in this way have a disadvantageous effect when such powders are used in building material mixtures.
  • these disadvantages, as well as the high energy requirement of spray drying, are still accepted in order to obtain the polymers in the form of free-flowing, tack-free powders.
  • the invention was therefore based on the object, a powder
  • compositions which does not have the disadvantages mentioned above and which is particularly suitable for long storage and transport times, which is largely insensitive to extreme temperatures, such as frost and heat, which does not require any preservative additives, and which moreover is faster and less dangerous than conventional spray-dried polymer compositions can be incorporated into a hot template.
  • the composition should also be able to be produced using as little energy as possible and should ultimately not adversely affect the properties of products to which the composition is added.
  • a powdery composition based on water-soluble polymers which is characterized in that it a) 5 - 95 wt .-% of a water-soluble polymer consisting of sulfonates of lignin and / or sulfonated melamine, naphthalene and / or ketone-formaldehyde condensation products is built up, and b) contains 5 to 95% by weight of a finely divided mineral carrier material.
  • Lignin sulfonates and melamine, naphthalene and / or ketone-formaldehyde condensation products which are sulfonated for the purpose of water solubility, are known flow agents for inorganic binders and in particular cement-based building materials; but they are also added by building materials to reduce water loss (as so-called "fluidloss additives"), especially when extracting oil.
  • a finely divided mineral carrier material which has a specific surface area of 0.01 to 500 m 2 / g (according to BET in accordance with DIN 66 131) and which is selected in particular from the group of calcium carbonate has proven itself as component b) , Dolomite, quartz powder, quartz sand, silica dust, cristoballite, silica, clays, clay minerals, aluminum silicates (such as bentonites, talc, mica, kaolins, slate powder), pumice powder, brick powder, titanium dioxide, clays, barium sulfate, fly ash, blast furnace slag / slag furnace slag , Portland cement, Portland cement with additives (CEM II and CEM III), alumina cements, gypsum, anhydrite, hemihydrate, lime and mixtures of these materials.
  • Dolomite quartz powder, quartz sand, silica dust, cristoballite, silica, clays, clay minerals, aluminum silicates (such
  • the type of these carrier materials is therefore not subject to any particular restriction. It is important that the respective material (mixture) is compatible with the water-soluble polymer, does not have a negative effect on the effect of the polymer and results in powdery, adhesive and packaging-resistant compositions even in small quantities.
  • the invention also provides for the mineral carrier materials to be used in combination with organic additives such as cellulose powders or fibers and powders or fibers of organic polymers (polyacrylonitrile, polystyrene, etc.).
  • the finely divided carrier material has a preferred particle size of 0.1 to 1,000 ⁇ m.
  • the invention also relates to a method for producing the powdery composition, which is characterized in that the water-soluble polymer (mixture) is incorporated into the respective mineral carrier material (mixture), which is preferably carried out immediately after the polymerization production process.
  • the polymer should be introduced into the mineral support material which has been introduced and, if appropriate, preheated, in as finely divided a form as possible, the polymer being incorporated into the mineral carrier material in at least one step in the form of an aqueous solution, which, according to the invention, is also optionally carried out after intermediate drying can.
  • aqueous solution of the polymer should be dried before the incorporation step (s).
  • the respective water-soluble polymer is sprayed onto a preheated mineral carrier material (for example of the silica type) in the temperature range from 70 to 150 ° C., which should ideally take place in a mixer.
  • a preheated mineral carrier material for example of the silica type
  • a particularly effective incorporation which is associated with a very low consumption of mineral carrier material, can be achieved by atomizing the water-soluble polymer onto the preheated carrier material. The effectiveness drops when the polymer sprays onto the carrier material, is dripped or poured because the surface of the substance to be incorporated becomes smaller in the order given.
  • Carrier materials with a pronounced porous structure such as. B. silicas have a particularly high adsorption capacity.
  • the present invention therefore recommends using mixing devices with low shear forces such as drum mixers, V mixers, tumble mixers or other representatives from the group of free-fall mixers for this type of carrier.
  • cone mixers, ploughshare mixers or spiral mixers with vertically or horizontally arranged mixing tools are also suitable for porous carrier materials.
  • mineral carriers the structure of which cannot be disturbed by the mixing process, all other types of apparatus can also be used, such as dissolvers, screw mixers, twin-screw mixers and air-mix mixers.
  • the present invention provides for one or more drying processes to be carried out during the incorporation of the polymer into the carrier in order to increase the productivity of the carrier material; however, a drying process is also possible, which follows the actual familiarization steps.
  • Another object of the invention is the use of at least one powdery composition according to the present invention in building materials, with bitumen products as building materials on hydraulically setting binders such as building materials based on cement or latent hydraulic binders, building materials based on gypsum, anhydrite or other calcium sulfate, ceramic materials, refractory materials and oil field materials.
  • the compositions according to the invention can also be used in dispersion-based building materials such as dispersion tile adhesive, elastic sealing slurries, primers, mortar additives and in powdery interior and exterior wall paints.
  • powdery compositions according to the invention can also be used in combination as above.
  • Building material groups are used, e.g. B. in bituminous cementitious screeds, grout etc.
  • the incorporation of the powdery composition into the building material is usually carried out together with other building material additives and filler mixtures, building material additives in particular being those which are suitable for
  • Additives such as B. rock flour, pozzolanic and / or latent hydraulic additives, and additives such.
  • the proportion of the composition in the building materials should be 0.05 to 5% by weight, based on the total weight of the building material.
  • the powdered compositions according to the invention have a number of advantages over compositions obtained in a conventional manner in powder form. This is particularly evident in the likewise claimed building material mixture, which is preferably a dry mixture for flowable mortar, and that a) 10 to 50% by weight of the powdery composition according to claims 1 to 5, b) 20 to 60 % By weight of additives, c) 30 to 70% by weight of additives, d) optionally up to 25% by weight of additives, e) optionally up to 10% by weight of a plastic dispersion and f) optionally up to 25% by weight of an inorganic binder.
  • a dry mixture for flowable mortar preferably a dry mixture for flowable mortar
  • a finely divided mineral carrier material mixture consisting of 250 g of cement (CEM I 52.5 R, Milke) and 120 g of limestone powder (CalcicoU W 12) was placed in a dissolver and preheated to 40 ° C. Then 20 g of Melment L 17 G as a water-soluble polymer (40% solution, SKW Trostberg AG; corresponding to 3.2% solids based on CEM I) were incorporated at 2,000 rpm and the mixing process was continued at 2,000 rpm for 25 minutes. This gave a dry, free-flowing powdery composition which was processed with 0.5 g of Tylose H 20 P as an additive and 700 g of sand as an additive to form a finished dry mix for flowable mortar. L2.
  • a finely divided mineral carrier material mixture consisting of 250 g cement (CEM I 52.5 R, Milke) and 120 g limestone powder (CalcicoU W 12) and 700 g sand as an additive were preheated to 45 ° C and placed in a tumble mixer (Bachofen AG, Basel). 32 g of Melment L 10 as a water-soluble polymer (25% strength aqueous solution, SKW Trostberg AG; corresponding to 3.2% solids based on CEM I) were then metered into this mixture and the mixing process continued for 75 minutes. The dry, free-flowing mixture obtained in this way was treated with 15 g of plastic dispersion powder.
  • Example 1 Dry mortar mixture consisting of: 250 g CEM I 52.5 R, Milke 120 g limestone powder (CalcicoU W 12) 700 g sand 8 g Melment F 17 G (corresponds to 3.2% based on CEM I) 0.5 g Tylose H 20 P
  • Example 2 Dry mortar mixture consisting of: 250 g CEM I 52.5 R, Milke 120 g limestone powder (CalcicoU W 12) 700 g sand 8 g Melment F 17 G (corresponds to 3.2% based on CEM I) 0.5 g Tylose H 20 P
  • Example 2 Dry mortar mixture consisting of: 250 g CEM I 52.5 R, Milke 120 g limestone powder (CalcicoU W 12) 700 g sand 8 g Melment F 17 G (corresponds to 3.2% based on CEM I) 0.5 g Tylose H 20 P
  • Example 2 Dry mortar mixture consisting of: 250 g CEM I 52.5 R, Milke 120 g limestone powder (CalcicoU W 12) 700
  • Dry mortar mixture consisting of: 250 g CEM I 52.5 R, Milke 120 g limestone powder (CalcicoU W 12) 700 g sand 8 g Melment F 10 (corresponds to 3.2% based on CEM I) 15 g plastic dispersion powder
  • Example 3 Dry mortar mixture consisting of: 250 g CEM I 52.5 R, Milke 120 g limestone powder (CalcicoU W 12) 700 g sand 8 g Melment F 10 (corresponds to 3.2% based on CEM I) 15 g plastic dispersion powder
  • Standard mortar mixture according to EN-196 consisting of: 450 g CEM I 42.5 R, from Schwenk 1350 g standard sand 9 g Melment F 17 G (corresponds to 2.0% based on CEM I)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

L'invention concerne une composition pulvérulente à base de polymères solubles dans l'eau, qui contient essentiellement : a) entre 5 et 95 % en poids de polymère soluble dans l'eau, composé de sulfonates de lignine et/ou de produits de condensation sulfonés à base de mélanine, de naphtaline et/ou de cétone-formaldéhyde et entre 5 et 95 % en poids d'un excipient minéral à fines particules de surface spécifique préférée de l'ordre de 0,01 à 500 m<2>/g. Le carbonate de calcium, la dolomite, les argiles, les cendres volantes, les ciments Portland et le plâtre constituent des excipients typiques appropriés et devraient à cet effet présenter de préférence une grandeur particulaire comprise entre 0,1 et 1.000 mu m. L'invention concerne en outre un procédé permettant de préparer cette composition, selon lequel le polymère soluble dans l'eau est avant tout incorporé dans chaque excipient, ce qui s'effectue de préférence sous forme de solution aqueuse en au moins une étape. Ledit procédé peut également comprendre des étapes de dessiccation intermédiaires. Ces compositions s'utilisent dans des quantités allant de 0,05 à 5 % en poids en polymère dans des matériaux de construction, tels que par ex. des produits bitumeux, du ciment, des matériaux de construction à base de calcium et/ou des matériaux de construction de champs pétrolifères. Ces compositions peuvent également être combinées avec d'autres additifs de matériaux de construction et d'autres mélanges de charges. Ces compositions pulvérulentes se caractérisent entre autres en ce qu'elles sont extrêmement coulantes, non collantes et extrêmement simples à doser et à travailler et en ce qu'elles influent de manière positive sur des propriétés des produits, telles que la fluidité.
EP01907511A 2000-02-09 2001-02-08 Composition pulverulente a base de polymeres solubles dans l'eau Withdrawn EP1263854A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2000105707 DE10005707B4 (de) 2000-02-09 2000-02-09 Pulverförmige Zusammensetzung auf der Basis von wasserlöslichen Polymeren
DE10005707 2000-02-09
PCT/EP2001/001367 WO2001058994A1 (fr) 2000-02-09 2001-02-08 Composition pulverulente a base de polymeres solubles dans l'eau

Publications (1)

Publication Number Publication Date
EP1263854A1 true EP1263854A1 (fr) 2002-12-11

Family

ID=7630339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01907511A Withdrawn EP1263854A1 (fr) 2000-02-09 2001-02-08 Composition pulverulente a base de polymeres solubles dans l'eau

Country Status (5)

Country Link
US (1) US20030004246A1 (fr)
EP (1) EP1263854A1 (fr)
JP (1) JP2003522091A (fr)
DE (1) DE10005707B4 (fr)
WO (1) WO2001058994A1 (fr)

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CN108821731A (zh) * 2018-07-20 2018-11-16 张莉敏 一种节能环保建筑材料及其制备方法

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CN104628332A (zh) * 2015-01-19 2015-05-20 霍邱皋新建材有限公司 一种节能环保的防裂免烧空心砖及其制备方法
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CN108821731A (zh) * 2018-07-20 2018-11-16 张莉敏 一种节能环保建筑材料及其制备方法

Also Published As

Publication number Publication date
DE10005707A1 (de) 2001-10-31
DE10005707B4 (de) 2004-10-14
JP2003522091A (ja) 2003-07-22
WO2001058994A1 (fr) 2001-08-16
US20030004246A1 (en) 2003-01-02

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