EP2089337A1 - Low-dust dry mortar - Google Patents

Low-dust dry mortar

Info

Publication number
EP2089337A1
EP2089337A1 EP07802198A EP07802198A EP2089337A1 EP 2089337 A1 EP2089337 A1 EP 2089337A1 EP 07802198 A EP07802198 A EP 07802198A EP 07802198 A EP07802198 A EP 07802198A EP 2089337 A1 EP2089337 A1 EP 2089337A1
Authority
EP
European Patent Office
Prior art keywords
dust
dry mortar
reducing component
mortar according
diol
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Withdrawn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
EP07802198A
Other languages
German (de)
French (fr)
Inventor
Paul Müller
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.)
Construction Research and Technology GmbH
Original Assignee
Construction Research and Technology 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 Construction Research and Technology GmbH filed Critical Construction Research and Technology GmbH
Publication of EP2089337A1 publication Critical patent/EP2089337A1/en
Withdrawn legal-status Critical Current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
    • C04B40/06—Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers ; Inhibiting the action of active ingredients
    • C04B40/0608—Dry ready-made mixtures, e.g. mortars at which only water or a water solution has to be added before use
    • 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
    • C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
    • C04B2103/0075—Anti-dusting agents

Definitions

  • the present invention relates to a new low-dust dry mortar.
  • Dry mortar are powdery, factory pre-mixed mortar. They consist of one or more binders and fillers with a grain size of up to 4 mm and other additives. Gypsum, lime or cement are used as binders.
  • the fillers are usually made of sand, preferably quartz sand, and fine filler such. B. limestone flour. The addition of other substances such as thickener, defoamer, accelerator, retarder, etc. depends on the respective desired property profile and application of the dry mortar. Dry mortar are mixed shortly before use with mixing water or other so-called liquid component. As the liquid component, aqueous synthetic resins are used.
  • a disadvantage of the dry mortars is the dust during transfer, z. B. in a mixing vessel, or when mixing with the aid of a mixing device.
  • the dust development is caused by the finest particles of the binder and the optionally contained fine fillers.
  • the resulting dust can cause respiratory irritation to the user.
  • EP 0 403 874 A1 special ethylene oxide / propylene oxide block copolymers are mentioned as additives for dust reduction.
  • DE 69926547 it is proposed to reduce the dusting behavior of cement-based compositions by the addition of fibrilated polytetrafluoroethylene fibers in the presence of alcohol- and / or silicone-based defoamers.
  • Various components have also been proposed for the purpose of reducing dust in pulverulent pigment preparations.
  • DE 25 23 096 proposes mineral oil with emulsifiers, DE 27 16 478 water vapor, oils and dispersants and DE 40 15 183 aliphatic diols.
  • EP 0 111 807 describes the use of aqueous polymer dispersions A solutions, in DE 195 25 730 the use of synthetic and natural oils, N-alkyl-N alkanolamine and fatty acid esters and in US 20060040049 the use of salts of aliphatic Fatty acids and methyl / ethyl esters of fatty acids claimed.
  • Object of the present invention was to provide a low-dust dry mortar available, which shows little dust during transfer and mixing operations.
  • the object was achieved by a dry mortar according to claims 1 to 8, which contains at least one dust-reducing component in an amount of 0.01 to 10 wt.%, Based on the total dry mixture.
  • the dust reduction component if it is a solid, is admixed to the dry mortar in the usual way. If it is a liquid, it may be sprayed on or mixed with the dry mortar formulation or its components either directly or in the form of an emulsion.
  • Preferred dust-reducing components are the following representatives and suitable mixtures thereof: monoalcohols, such as 3-methoxybutanol, benzyl alcohol, 1,2-propanediol, hexanol, diacetone alcohol, ethyl diglycol, isopropanol, 2-ethylhexanol and / or alkanediols, such as 2-methylpentane- 2,4-diol, neopentyl glycol, 2-methylpentane-2,4-diol, neopentyl glycol, n-butane-1,3-diol, n-butane-1,5-diol, n-butane-2,5-diene diol, glycols, polyethylene glycols, and fatty alcohols, aliphatic ethers, cellulose ethers, alkoxylates, methyl / ethyl fatty acid ethers, terti
  • Atoms fatty acids and their salts, fatty acid esters, N-alkyl-N alkanolamines, propylene carbonate, acetates such as isopropyl acetate, hexyl acetate, ethyl glycol acetate, and aliphatic phosphoric acid esters, cyclohexanone, methyl isobutyl ketones, methyl heptyl ketones, perflourpolymethyl isopropyl ether, silicone oils, polysiloxane-polyether copolymers, silicic acid.
  • acetates such as isopropyl acetate, hexyl acetate, ethyl glycol acetate, and aliphatic phosphoric acid esters, cyclohexanone, methyl isobutyl ketones, methyl heptyl ketones, perflourpolymethyl isopropyl ether, silicone oils, polysiloxane-polyether
  • both dry mortars were mixed dry with a high-speed drilling machine with disk stirrer, and the resulting dust was visually observed.
  • the mixture 1 according to the invention showed a significantly lower dust formation.

Landscapes

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

Abstract

The present invention relates to a dry mortar containing at least one dust-reducing component in an amount of from 0.01 to 10% by weight, based on the total dry mix. The dust-reducing component can preferably be monoalcohols, alkane diols, glycols or fatty alcohols. Aliphatic ethers, cellulose ethers, alkoxylates and fatty acid ethers are also possible. This dry mortar can be produced by spraying the dust-reducing component in preferably liquid form onto the prepared dry mix or introducing it into the dry mix in another way. This dry mortar is characterized by significant dust reduction during dispensing, packing or processing and therefore represents a significant step forward in respect of occupational hygiene.

Description

Staubarmer Trockenmörtel Beschreibung Dust-free dry mortar Description
Die vorliegende Erfindung betrifft einen neuen staubarmen Trockenmörtel.The present invention relates to a new low-dust dry mortar.
Trockenmörtel sind pulverförmige, werkseitig vorgemischte Mörtel. Sie bestehen aus einem oder mehreren Bindemitteln und Füllstoffen mit einer Korngröße bis 4 mm sowie weiteren Additiven. Als Bindemittel werden Gips, Kalk oder Zement eingesetzt. Die Füllstoffe bestehen in der Regel aus Sand, vorzugsweise Quarzsand, und Feinfüllstoff wie z. B. Kalksteinmehl. Die Zugabe weitere Stoffe wie Verdicker, Entschäumer, Beschleuniger, Verzögerer usw. richtet sich nach dem jeweilig gewünschten Eigenschaftsprofil und Anwendungsfall des Trockenmörtels. Trockenmörtel werden kurz vor der Verwendung mit Anmachwasser oder einer anderen sogenannten Flüssigkomponete gemischt. Als Flüssigkomponente werden wässrige Kunstharze verwendet.Dry mortar are powdery, factory pre-mixed mortar. They consist of one or more binders and fillers with a grain size of up to 4 mm and other additives. Gypsum, lime or cement are used as binders. The fillers are usually made of sand, preferably quartz sand, and fine filler such. B. limestone flour. The addition of other substances such as thickener, defoamer, accelerator, retarder, etc. depends on the respective desired property profile and application of the dry mortar. Dry mortar are mixed shortly before use with mixing water or other so-called liquid component. As the liquid component, aqueous synthetic resins are used.
Nachteilig bei den Trockenmörteln ist die Staubentwicklung beim Umfüllen, z. B. in ein Rührgefäß, oder beim Anmischen mit Hilfe einer Mischvorrichtung. Die Staubentwicklung wird durch die Feinstpartikel des Bindemittels und der gegebenenfalls enthaltenen Feinfüllstoffe verursacht. Der dabei entstehende Staub kann beim Verarbeiter zu Atemwegsreizungen führen.A disadvantage of the dry mortars is the dust during transfer, z. B. in a mixing vessel, or when mixing with the aid of a mixing device. The dust development is caused by the finest particles of the binder and the optionally contained fine fillers. The resulting dust can cause respiratory irritation to the user.
In DE 10 2005 005 998 A1 wird die Verwendung von Kohlenwasserstoffen in pulverförmigen Baustoffen zur Verminderung der Staubentwicklung beschrieben.DE 10 2005 005 998 A1 describes the use of hydrocarbons in pulverulent building materials to reduce the formation of dust.
In EP 0 403 874 A1 sind als Additive zur Staubminderung spezielle Ethylenoxid/Propylenoxid-Blockcopolymere genannt.In EP 0 403 874 A1, special ethylene oxide / propylene oxide block copolymers are mentioned as additives for dust reduction.
Gemäß DE 69926547 wird vorgeschlagen, das Staubbildungsverhalten von zementbasierten Zusammensetzungen durch den Zusatz von fibrilierten Polytetrafluorethylenfasern in Gegenwart von alkohol- und/oder siliconbasierten Entschäumern zu reduzieren. Auch zum Zweck der Staubreduktion in pulverförmigen Pigmentzubereitungen wurden schon verschiedene Komponenten vorgeschlagen. So werden in DE 25 23 096 Mineralöl mit Emulgatoren, in DE 27 16 478 Wasserdampf, Öle und Dispergiermittel und in DE 40 15 183 aliphatische Diole vorgeschlagen.According to DE 69926547 it is proposed to reduce the dusting behavior of cement-based compositions by the addition of fibrilated polytetrafluoroethylene fibers in the presence of alcohol- and / or silicone-based defoamers. Various components have also been proposed for the purpose of reducing dust in pulverulent pigment preparations. For example, DE 25 23 096 proposes mineral oil with emulsifiers, DE 27 16 478 water vapor, oils and dispersants and DE 40 15 183 aliphatic diols.
Zur Staubminderung in Düngemitteln und Pestiziden wird gemäß EP 0 111 807 die Verwendung von wässrigen PolymerdispersionenA-Lösungen, in DE 195 25 730 die Verwendung von synthetischen und natürlichen ölen, N-Alkyl- N Alkanolamin und Fettsäureester und in US 20060040049 die Verwendung von Salzen aliphatischer Fettsäuren sowie Methyl-/Ethylester von Fettsäuren beansprucht.For dust reduction in fertilizers and pesticides, EP 0 111 807 describes the use of aqueous polymer dispersions A solutions, in DE 195 25 730 the use of synthetic and natural oils, N-alkyl-N alkanolamine and fatty acid esters and in US 20060040049 the use of salts of aliphatic Fatty acids and methyl / ethyl esters of fatty acids claimed.
Aufgabe der vorliegenden Erfindung war es, einen staubarmen Trockenmörtel zur Verfügung zu stellen, der bei Umfüll- und Mischvorgängen wenig Staubentwicklung zeigt. Die Aufgabe wurde durch einen Trockenmörtel nach den Ansprüchen 1 bis 8 gelöst, der zumindest eine staubmindernde Komponente in einer Menge von 0,01 bis 10 Gew.%, bezogen auf die Gesamttrockenmischung, enthält.Object of the present invention was to provide a low-dust dry mortar available, which shows little dust during transfer and mixing operations. The object was achieved by a dry mortar according to claims 1 to 8, which contains at least one dust-reducing component in an amount of 0.01 to 10 wt.%, Based on the total dry mixture.
Die Komponente zur Staubreduktion wird, falls es sich um einen Feststoff handelt, in üblicher Weise dem Trockenmörtel zugemischt. Handelt es sich um eine Flüssigkeit, kann diese entweder direkt oder in Form einer Emulsion auf die Trockenmörtelformulierung oder deren Bestandteile aufgesprüht oder mit diesen gemischt werden.The dust reduction component, if it is a solid, is admixed to the dry mortar in the usual way. If it is a liquid, it may be sprayed on or mixed with the dry mortar formulation or its components either directly or in the form of an emulsion.
Als bevorzugte staubmindernde Komponente kommen folgende Vertreter und deren geeignete Mischungen in Frage: Monoalkohole, wie 3-Methoxybutanol, Benzylalkohol, 1 ,2 Propandiol, Hexanol, Diacetonalcohol, Ethyldiglycol, Isopropanol, 2-Ethylhexanol und/oder Alkandiole wie 2-Methyl-pentane-2,4- diol, Neopentylglycol, 2-Methyl-pentane-2,4-diol, Neopentylglykol, n-Butane- 1 ,3-diol, n-Butane-1 ,5-diol, n-Butane-2,5-diol, Glycole, Polyethylenglycole, sowie Fettalkohole, aliphatische Ether, Celluloseether, Alkoxylate, Methyl- /Ethyl-Fettsäureether, tertiäre aliphatisch gesättigte Monocarbonsäuren mit 5- 20 C-Atomen, ungesättigte Monocarbonsäuren mit 5 bis 20 Kohlenstoff- Atomen, Fettsäuren und deren Salze, Fettsäureester, N-Alkyl-N Alkanolamine, Propylenecarbonat, Acetate wie Isopropylacetat, Hexylacetat, Ethylglykolacetat, und aliphatische Phosphorsäureester, Cyclohexanon, Methylisobutylketone, Methylheptylketone, Perflourpolymethylisopropylether, Siliconöle, Polysiloxan-Polyether-Copolymere, Kieselsäure.Preferred dust-reducing components are the following representatives and suitable mixtures thereof: monoalcohols, such as 3-methoxybutanol, benzyl alcohol, 1,2-propanediol, hexanol, diacetone alcohol, ethyl diglycol, isopropanol, 2-ethylhexanol and / or alkanediols, such as 2-methylpentane- 2,4-diol, neopentyl glycol, 2-methylpentane-2,4-diol, neopentyl glycol, n-butane-1,3-diol, n-butane-1,5-diol, n-butane-2,5-diene diol, glycols, polyethylene glycols, and fatty alcohols, aliphatic ethers, cellulose ethers, alkoxylates, methyl / ethyl fatty acid ethers, tertiary aliphatically saturated monocarboxylic acids having 5-20 carbon atoms, unsaturated monocarboxylic acids having 5 to 20 carbon atoms. Atoms, fatty acids and their salts, fatty acid esters, N-alkyl-N alkanolamines, propylene carbonate, acetates such as isopropyl acetate, hexyl acetate, ethyl glycol acetate, and aliphatic phosphoric acid esters, cyclohexanone, methyl isobutyl ketones, methyl heptyl ketones, perflourpolymethyl isopropyl ether, silicone oils, polysiloxane-polyether copolymers, silicic acid.
Das nachfolgende Beispiel belegt die Vorteile der vorliegenden Erfindung. The following example demonstrates the advantages of the present invention.
Beispielexample
Ausführungsbeispiel:Embodiment:
Es wurden in einen Mischbehälter 500 g Portlanzement CEM 42,5, 700 g Quarzsand der Körnung 0,1 bis 0,5 mm und 200g Kalksteinmehl trocken und homogen miteinander vermischt. Über einer feinen Düse wurden unter weiterem langsamen Rühren der Trockenmischung 10 g flüssiges Trioctylphosphat durch Eindüsen fein verteilt zudosiert (Trockenmörtel 1). In gleicher Weise wurde eine zweite Mischung ohne den Zusatz von Trioctylphosphat hergestellt (Trockenmörtel 2).500 g of port lance CEM 42.5, 700 g of quartz sand of grain size 0.1 to 0.5 mm and 200 g of limestone flour were mixed dry and homogeneous with each other in a mixing vessel. 10 g of liquid trioctyl phosphate were added in a finely divided manner by spraying over a fine nozzle with further slow stirring of the dry mixture (dry mortar 1). In the same way, a second mixture was prepared without the addition of trioctyl phosphate (dry mortar 2).
Zur Prüfung der Staubentwicklung wurden beide Trockenmörtel mit einer schnell laufenden Bohrmaschine mit Scheibenrührer trocken gemischt und die dabei auftretende Staubentwicklung visuell beobachtet. Im Vergleich zur u n modifizierten Vergleichsmischung 2 zeigte die erfindungsgemäße Mischung 1 eine deutlich geringere Staubentwicklung. To test the development of dust, both dry mortars were mixed dry with a high-speed drilling machine with disk stirrer, and the resulting dust was visually observed. In comparison to the modified comparison mixture 2, the mixture 1 according to the invention showed a significantly lower dust formation.

Claims

Patentansprüche claims
1. Trockenmörtel, dadurch gekennzeichnet, dass er mindestens eine staubmindernde Komponente in einer Menge von 0,01 bis 10 Gew.%, bezogen auf die Gesamttrockenmischung, enthält.1. dry mortar, characterized in that it contains at least one dust-reducing component in an amount of 0.01 to 10 wt.%, Based on the total dry mixture.
2. Trockenmörtel nach Anspruch 1 , dadurch gekennzeichnet, dass er als staubmindernde Komponente Monoalkohole, wie 3-Methoxybutanol, Benzylalkohol, 1 ,2 Propandiol, Hexanol, Diacetonalcohol, Ethyldiglycol, Isopropanol, 2-Ethylhexanol und/oder Alkandiole wie 2-Methyl-pentane- 2,4-diol, Neopentylglycol, 2-Methyl-pentane-2,4-diol, Neopentylglykol, n- Butane-1 ,3-diol, n-Butane-1 ,5-diol, n-Butane-2,5-diol und/oder Glycole und/oder Polyethylenglycole und/oder Fettalkohole enthält.2. dry mortar according to claim 1, characterized in that it is used as a dust-reducing component monoalcohols, such as 3-methoxybutanol, benzyl alcohol, 1, 2 propanediol, hexanol, diacetonalcohol, ethyldiglycol, isopropanol, 2-ethylhexanol and / or alkanediols such as 2-methyl-pentanes 2,4-diol, neopentyl glycol, 2-methyl-pentane-2,4-diol, neo-pentyl glycol, n-butane-1,3-diol, n-butane-1,5-diol, n-butane-2,5 -diol and / or glycols and / or polyethylene glycols and / or fatty alcohols.
3. Trockenmörtel nach Anspruch 1 oder 2, dadurch gekennzeichnet dass er als staubmindernde Komponente aliphatische Ether und/oder Celluloseether und/oder Alkoxylate und/oder Methyl-/Ethyl- Fettsäureether enthält.3. dry mortar according to claim 1 or 2, characterized in that it contains as a dust-reducing component aliphatic ethers and / or cellulose ethers and / or alkoxylates and / or methyl / ethyl fatty acid ethers.
4. Trockenmörtel nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass er als staubmindernde Komponente tertiäre aliphatisch gesättigte Monocarbonsäuren mit 5-20 C-Atomen, ungesättigte Monocarbonsäuren mit 5 bis 20 Kohlenstoff-Atomen Fettsäuren und deren Salze, sowie Mischungen daraus enthält.4. dry mortar according to one of claims 1 to 3, characterized in that it contains tertiary aliphatic saturated monocarboxylic acids having 5-20 carbon atoms, unsaturated monocarboxylic acids having 5 to 20 carbon atoms fatty acids and their salts, and mixtures thereof as a dust-reducing component.
5. Trockenmörtel nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass er als staubmindernde Komponente Fettsäureester, N-Alkyl-N Alkanolamine, Propylenecarbonat, Acetate wie Isopropylacetat, Hexylacetat, Ethylglykolacetat, aliphatische Phosphorsäureester und Mischungen daraus enthält.5. Dry mortar according to one of claims 1 to 4, characterized in that it contains as a dust-reducing component fatty acid esters, N-alkyl-N alkanolamines, propylene, acetates such as isopropyl acetate, hexyl acetate, ethyl glycol acetate, aliphatic phosphoric acid esters and mixtures thereof.
6. Trockenmörtel nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass er als staubmindernde Komponente Cyclohexanon, Methylisobutylketone, Methylheptylketone und Mischungen daraus enthält.6. Dry mortar according to one of claims 1 to 5, characterized in that it is used as a dust-reducing component Cyclohexanone, methyl isobutyl ketones, methyl heptyl ketones and mixtures thereof.
7. Trockenmörtel nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass er als staubmindernde Komponente Perflourpolymethylisopropylether enthält.7. Dry mortar according to one of claims 1 to 6, characterized in that it contains as a dust-reducing component Perflourpolymethylisopropylether.
8. Trockenmörtel nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass er als staubmindernde Komponente Siliconöle, Polysiloxan-Polyether-Copolymere, Kieselsäure und Mischungen daraus enthält. 8. dry mortar according to one of claims 1 to 7, characterized in that it contains as dust-reducing component silicone oils, polysiloxane-polyether copolymers, silica and mixtures thereof.
EP07802198A 2006-11-03 2007-09-07 Low-dust dry mortar Withdrawn EP2089337A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200620016797 DE202006016797U1 (en) 2006-11-03 2006-11-03 Dry mortar contains dust-reducing additive, e.g. alcohol, polyethylene glycol, polyvinyl alcohol, ether, organic acid, alkanolamine, ester, ketone, silicone oil, polysiloxane-polyether copolymer, silicic acid, animal or vegetable oil or wax
PCT/EP2007/007806 WO2008052618A1 (en) 2006-11-03 2007-09-07 Low-dust dry mortar

Publications (1)

Publication Number Publication Date
EP2089337A1 true EP2089337A1 (en) 2009-08-19

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EP07802198A Withdrawn EP2089337A1 (en) 2006-11-03 2007-09-07 Low-dust dry mortar

Country Status (3)

Country Link
EP (1) EP2089337A1 (en)
DE (1) DE202006016797U1 (en)
WO (1) WO2008052618A1 (en)

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