EP4139265A1 - Superabsorber enthaltende abmischungen - Google Patents
Superabsorber enthaltende abmischungenInfo
- Publication number
- EP4139265A1 EP4139265A1 EP20721201.0A EP20721201A EP4139265A1 EP 4139265 A1 EP4139265 A1 EP 4139265A1 EP 20721201 A EP20721201 A EP 20721201A EP 4139265 A1 EP4139265 A1 EP 4139265A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixtures
- weight
- mortar
- additives
- ethylenically unsaturated
- 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.)
- Pending
Links
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- WDQKICIMIPUDBL-UHFFFAOYSA-N n-[2-(dimethylamino)ethyl]prop-2-enamide Chemical compound CN(C)CCNC(=O)C=C WDQKICIMIPUDBL-UHFFFAOYSA-N 0.000 description 1
- OHLHOLGYGRKZMU-UHFFFAOYSA-N n-benzylprop-2-enamide Chemical compound C=CC(=O)NCC1=CC=CC=C1 OHLHOLGYGRKZMU-UHFFFAOYSA-N 0.000 description 1
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- 239000002245 particle Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
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- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
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- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- RZKYDQNMAUSEDZ-UHFFFAOYSA-N prop-2-enylphosphonic acid Chemical compound OP(O)(=O)CC=C RZKYDQNMAUSEDZ-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
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- 239000005060 rubber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 229940001941 soy protein Drugs 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- GTZCVFVGUGFEME-UHFFFAOYSA-N trans-aconitic acid Natural products OC(=O)CC(C(O)=O)=CC(O)=O GTZCVFVGUGFEME-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- AIUAMYPYEUQVEM-UHFFFAOYSA-N trimethyl(2-prop-2-enoyloxyethyl)azanium Chemical class C[N+](C)(C)CCOC(=O)C=C AIUAMYPYEUQVEM-UHFFFAOYSA-N 0.000 description 1
- USFMMZYROHDWPJ-UHFFFAOYSA-N trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium Chemical class CC(=C)C(=O)OCC[N+](C)(C)C USFMMZYROHDWPJ-UHFFFAOYSA-N 0.000 description 1
- VZTGWJFIMGVKSN-UHFFFAOYSA-O trimethyl-[3-(2-methylprop-2-enoylamino)propyl]azanium Chemical class CC(=C)C(=O)NCCC[N+](C)(C)C VZTGWJFIMGVKSN-UHFFFAOYSA-O 0.000 description 1
- OEIXGLMQZVLOQX-UHFFFAOYSA-N trimethyl-[3-(prop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCCNC(=O)C=C OEIXGLMQZVLOQX-UHFFFAOYSA-N 0.000 description 1
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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
- C04B24/2652—Nitrogen containing polymers, e.g. polyacrylamides, polyacrylonitriles
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- 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
- C04B28/04—Portland cements
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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- 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
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
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- 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
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
- C04B24/06—Carboxylic acids; Salts, anhydrides or esters thereof containing hydroxy groups
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- 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
- C04B24/2635—Polyvinylacetals
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- 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
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- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
- C04B24/383—Cellulose or derivatives thereof
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- 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
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- 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
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- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0051—Water-absorbing polymers, hydrophilic polymers
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00517—Coating or impregnation materials for masonry
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00637—Uses not provided for elsewhere in C04B2111/00 as glue or binder for uniting building or structural materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
- C04B2111/00672—Pointing or jointing materials
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- 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
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- 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
- C04B2111/60—Flooring materials
- C04B2111/62—Self-levelling compositions
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- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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- 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 invention relates to mixtures containing superabsorbents and additives, processes for their production, processes for producing building material formulations using the mixtures and the use of the mixtures, for example in tile adhesives, leveling compounds, sealing slurries or for the production of composite thermal insulation systems.
- Building material formulations are generally based on mineral binders such as cement or gypsum, fillers and additives and are used, for example, as coatings or adhesives such as tile adhesives, fillers, leveling compounds or grout or in the production of thermal insulation composite systems.
- additives By adding additives, the building material formulations are adapted to the special requirements of the respective application and the respective place of use and the desired product properties are set.
- Common additives are protective colloid-stabilized, water-redispersible polymer powders (dispersion powders), thickeners, in particular special cellulose ethers, setting accelerators, setting retarders, fibers, foam stabilizers and many more.
- Dispersion powders are used to improve solid mortar properties, such as adhesion, abrasion resistance, scratch resistance or flexural strength, but are generally not used to adjust the fresh mortar properties.
- Fibers are used, for example, to increase the crack-bridging properties or the flexural strength of solid mortars.
- Dispersants are used to disperse finely divided additives so that they do not agglomerate but are distributed evenly in the solid mortar and the solid mortar has a homogeneous profile of properties.
- the solid mortars are colored with pigments. Even with thickeners, their water retention capacity influences the hydration of the mineral binder and thus ultimately the strength of the solid mortar.
- the fresh mortar properties are also important for the user, such as stickiness, wetting properties, workability or creamy consistency of the fresh mortar as well as the ability to correct the fresh mortar layer during application or the ability to correct tiles placed in the mortar layer.
- the viscosity or the wetting properties of the fresh mortar have a significant influence on this. Less viscous tile adhesives with a creamy consistency are easier to apply to substrates with a notched trowel, and tiles can be corrected more easily after laying them in the mortar bed. At the same time, the fresh mortar should be stable and not slide off the substrate even when applied vertically.
- the production of thermal insulation composite systems is also made easier with less viscous reinforcement mortars, as reinforcement fabric or insulation panels can be inserted more easily.
- Fresh mortar properties are often adjusted with the thickening agent cellulose ether.
- Cellulose ethers are expensive, however, which is why the aim is to reduce the amount of cellulose ether used.
- the individual cellulose ether derivatives usually have a narrow spectrum of activity, so that specific cellulose ether derivatives are required to achieve specific properties or for specific mortar recipes, which complicates the creation of mortar recipes, and which is why compounders or manufacturers of building material formulations have a large number of cellulose ether derivatives ready have to. For this reason, too, there is a desire to reduce the use of cellulose ether without sacrificing fresh mortar properties.
- the task was to provide fresh mortar with lower viscosity and increased wetting properties. This should preferably also the quantities of cellulose ethers used in building material formulations can be reduced, if possible without a negative impact on the aforementioned fresh mortar properties.
- the object was achieved with mixtures based on superabsorbents and additives selected from the group comprising protective colloid-stabilized polymers of ethylenically unsaturated monomers, thickeners, setting accelerators, setting retarders, defoamers and fibers, the mixtures not containing any mineral binders Superabsorbent and the additives were introduced into mortar in the form of such a premix, the object according to the invention was achieved.
- superabsorbents in mortars are known per se from EP1329435, DE102007027470, WO2008 / 151879 or WO2008 / 151878, for example.
- the superabsorbents and the other components were introduced as separate components. These documents also aim to reduce the amount of dispersion powder in mortars.
- the dry mortars in EP2499104 also contain branched comb polymers with polyether side chains, melamine or naphthalenesulfonate-formaldehyde condensates as dispersants that act as superplasticizers.
- Superplasticizers, liquefiers and superplasticizers are generally not crosslinked polymers and do not form hydrogels in water, but instead have a liquefying effect in aqueous formulations.
- EP2388243 describes compositions of water-redispersible polymer powders and superplasticizers, so-called polycarboxylate ethers, based on (meth) acrylic acid and ethylenically unsaturated polyalkylene oxides, and the use of such compositions in dry mortars.
- Superabsorbents generally have no liquefying properties and are known to differ chemically from liquefiers.
- DE19539250 describes a setting additive for Zementzube preparations, which in addition to a water-soluble polyalkylene oxide and superabsorbent also contains a super-concrete plasticizer such as styrene-maleic anhydride.
- the invention relates to mixtures containing one or more superabsorbent polymers (superabsorbents) and one or more additives selected from the group comprising protective colloid-stabilized polymers based on one or more ethylenically unsaturated monomers, thickeners, setting accelerators, setting retarders, defoamers and fibers and optionally one or more additives, with the proviso that no mineral binders are contained.
- superabsorbent polymers superabsorbents
- additives selected from the group comprising protective colloid-stabilized polymers based on one or more ethylenically unsaturated monomers, thickeners, setting accelerators, setting retarders, defoamers and fibers and optionally one or more additives, with the proviso that no mineral binders are contained.
- the superabsorbents and the additives are preferably present as separate constituents, in particular as separate particulate components.
- the mixtures can be present, for example, in the form of powders, in particular in the form of water-dispersible or soluble powders, or in the form of aqueous dispersions or solutions. Water-dispersible powders and in particular aqueous dispersions or solutions are preferred.
- the blends preferably contain> 30% by weight, particularly preferably> 70% by weight and most preferably> 90% by weight of additives and superabsorbents, based on the dry weight of the blends. Most preferably, the mixtures consist exclusively of superabsorbents and additives.
- the blends preferably contain> 30% by weight, particularly preferably> 80% by weight and most preferably> 90% by weight of additives.
- the mixtures preferably contain ⁇ 99.99% by weight, particularly preferably ⁇ 99.9% by weight and most preferably d 99.5% by weight of additives.
- the data in% by weight relate to the dry weight of the blends.
- Preferred additives are thickeners and, in particular, protective colloid-stabilized polymers based on ethylenically unsaturated monomers.
- the blends preferably contain> 0.01% by weight, particularly preferably> 0.1% by weight and most preferably> 0.5% by weight of superabsorbents.
- the mixtures preferably contain ⁇ 70% by weight, particularly preferably ⁇ 20% by weight and most preferably ⁇ 10% by weight of superabsorbents.
- the data in% by weight relate to the dry weight of the mixtures.
- Superabsorbents are generally copolymers that swell in water or aqueous saline solutions. On contact with water or aqueous systems, hydrogels are generally formed with swelling and absorption of water. A multiple of the weight of the powdered superabsorbent can be absorbed in water. Hydrogels are generally understood to mean water-containing gels based on hydrophilic, but crosslinked, water-insoluble polymers that are present as three-dimensional networks. Superabsorbents are generally water-insoluble.
- Superabsorbents are in particular crosslinked, high molecular weight, either anionic or cationic polyelectrolytes, which are accessible by radical initiated polymerization of ethylenically unsaturated vinyl compounds and, if appropriate, subsequent drying of the copolymers obtained in this way.
- Anionic polyelectrolytes in particular polyelectrolytes which carry carboxylic acid groups, are preferred.
- the ethylenically unsaturated vinyl compounds generally comprise crosslinking monomers, in particular special poly-ethylenically unsaturated monomers.
- Preferred superabsorbents are crosslinked polymers with acid groups, such as carboxylic acid groups, which are preferably wholly or partially, in particular predominantly in the form of their salts, generally alkali metal or ammonium salts.
- Superabsorbents are preferably based on one or more ethylenically bearing ionic groups unsaturated monomers, one or more crosslinking, ethylenically unsaturated monomers, optionally one or more monoethylenically unsaturated, nonionic, (meth) acrylamido-bearing monomers and optionally one or more other monoethylenically unsaturated, hydrophilic monomers.
- the ethylenically unsaturated monomers carrying ionic groups preferably carry either anionic groups, in particular special acid groups, or cationic groups.
- the superabsorbents contain monomer units carrying ionic groups in an amount of preferably 9 to 70 mol%, particularly preferably 13 to 60 mol% and most preferably 18 to 50 mol%.
- Ethylenically unsaturated monomers bearing acid groups can be, for example, monoethylenically unsaturated carboxylic acids, in particular C3 to C25 carboxylic acids, their anhydrides, sulfonic acids or phosphonic acids.
- monoethylenically unsaturated carboxylic acids are acrylic acid, methacrylic acid, ethacrylic acid, chloroacrylic acid, crotonic acid, maleic acid, maleic anhydride, itaconic acid, citraconic acid, mesaconic acid, glutaconic acid, aconitic acid and fumaric acid.
- Examples of monoethylenically unsaturated sulfonic acids are vinylsulfonic acid, allylsulfonic acid, sulfoethylacrylate, sulfomethacrylate, sulfopropyl acrylate, sulfopropyl methacrylate, allylhydroxypropanesulfonic acid, 2-hydroxy-3-acryloxypropylsulfonic acid, 2-hydroxy-3-methacrylic-oxido, 2-hydroxy-3-methacrylic acid -2-methylpropanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, 2-acrylamidobutanesulfonic acid and 2-acrylamido-2,4,4-trimethylpentanesulfonic acid.
- Examples of monoethylenically unsaturated phosphonic acids are vinyl phosphonic acid and allyl phosphonic acid.
- Preferred ethylenically unsaturated monomers bearing acid groups are acrylic acid, methacrylic acid, vinylsulfonic acid, acrylamidopropanesulfonic acid, 2-methacrylamido-2-methylpropane sulfonic acid, 2-acrylamidobutanesulfonic acid and 2-acrylamido-2,4,4-trimethylpentanesulfonic acid.
- Acrylic acid and methacrylic acid are particularly preferred.
- Examples of ethylenically unsaturated monomers bearing cationic groups are [2- (acryloyloxy) ethyl] trimethylammonium salts, [2- (methacryloyloxy) ethyl] trimethylammonium salts, [3- (acryloylamino) propyl] trimethylammonium salts and [3- (methacryloylamino) propyl] trimethylammonium salts.
- the salts are preferably in the form of halides or methosulfates.
- crosslinking ethylenically unsaturated monomers, post-crosslinking monomers or, preferably, pre-crosslinking monomers can be used, for example.
- the superabsorbents contain crosslinking monomer units in an amount of preferably 0.01 to 15 mol%, particularly preferably 0.02 to 5 mol% and most preferably 0.05 to 1 mol%.
- Pre-crosslinking monomers are generally polyethylenically unsaturated monomers, for example poly (meth) acrylic functional monomers, such as 1,4-butanediol di (meth) acrylate, 1,3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate, diethylene glycol diacrylate, diethylene glycol dimethacrylate, ethylene acrylate ethoxylated bisphenol A diacrylate, ethoxylated bisphenol A dimethacrylate, ethylene glycol dimethacrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol dimethacrylate, polyethylene glycol di (meth) acrylate, triethylene glycol, triphylene glycol di (meth) acrylate, dipentaerythritol pentaacrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, tri
- Methacrylic functional are preferred over the acrylic functional monomers.
- (Meth) acrylamido, allylamino and allyl ether-functional monomers are particularly preferred.
- Post-crosslinking monomers generally contain an ethylenically unsaturated group and at least one further functional group.
- the subsequent crosslinking can, for example, take place in that the further functional group of the post-crosslinking monomers react with acid groups.
- Suitable functional groups are, for example, hydroxyl, amino, epoxy and aziridino groups.
- hydroxyalkyl esters of monoethylenically unsaturated carboxylic acids such as 2-hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate and hydroxybutyl methacrylate, allyl piperidinium bromide, N-vinylimidazole, 2-vinylimidazole, such as N-vinylimidazole, such as N-vinylimidazole Vinylimidazolines such as N-vinylimidazoline, l-vinyl-2-methylimidazoline, l-vinyl-2-ethylimidazoline or l-vinyl-2-propylimidazoline, which can be used in the polymerization in the form of the free bases, in quaternized form or as a salt.
- hydroxyalkyl esters of monoethylenically unsaturated carboxylic acids such
- Dialkylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate and diethylaminoethyl methacrylate and glycidyl (meth) acrylate are also suitable.
- Examples of monoethylenically unsaturated, nonionic, (meth) acrylamido-bearing monomers are acrylamide, Me- thacrylamide, N-methyl (meth) acrylamide, N, N-dimethylacrylamide, N-ethylacrylamide, N, N-diethylacrylamide, N-cyclohexyl acrylamide, N-benzylacrylamide, N, N-dimethylaminopropylacrylamide, N, N-dimethylaminoethylacrylamide and / or N-tertiary butyl acrylamide. Methyl acrylamide, N, N-dimethylacrylamide and methacrylamide are preferred, acrylamide is particularly preferred.
- the superabsorbents are based preferably from 30 to 90 mol%, particularly preferably from 40 to 85 mol% and most preferably from 50 to 80 mol% on monoethylenically unsaturated, nonionic monomers bearing (meth) acrylamido groups.
- the other monoethylenically unsaturated, hydrophilic monomers are preferably selected from the group comprising acrylonitrile, methacrylonitrile, vinyl pyridine, vinyl pyrolidone, vinyl caprolactam, vinyl acetate, (meth) acrylic acid esters bearing hydroxy groups, such as hydroxyethyl acrylic acid, hydroxypropyl acrylic acid and hydroxypropyl methacrylic acid.
- the superabsorbents are based on preferably 0 to 30 mol%, particularly preferably 1 to 20 mol%, on monoethylenically unsaturated, hydrophilic monomers.
- Preferred superabsorbents are based on 19.9 to 49.9 mol% 2-acrylamido-2-methylpropanesulfonic acid, 50 to 80 mol% acrylic amide and a crosslinking monomer selected from the group comprising triallylamine, N, N'-methylenebisacrylamide and Pentaerythritol triallyl ether; 19.9 to 49.9 mol% (meth) acrylic acid, 50 to 80 mol% acrylamide and a crosslinking monomer selected from the group comprising triallylamine, N, N'-methylenebisacrylamide and pentaerythritol triallyl ether; 19.9 to 49.9 mol% [3- (acryloylamino) propyl] trimethylammonium chloride, 50 to 80 mol% acrylamide and a crosslinking monomer selected from the group comprising triallylamine, N, N'-methy lenbisacrylamide and pentaerythritol triallyl ether.
- the superabsorbents are preferably in solid form, in particular special in the form of a powder. Particularly preferred lie the superabsorbents in aqueous form.
- Superabsorbers in solid form have a particle size distribution such that preferably> 98% by weight a sieve with a mesh size of 2000 gm, preferably> 95% by weight a sieve with a mesh size of 500 gm and most preferably> 90% by weight pass through a sieve with a mesh size of 400 gm (determination according to standard edana 420.2-02).
- the superabsorbents can preferably absorb> 5 g, particularly preferably> 15 g and most preferably> 20 g of water, based on 1 g of superabsorbent present in solid form.
- the determination can be made, for example, analogously to the edana 440.2-02 standard, as indicated in paragraph 83 of EP2499104B1.
- the superabsorbents can be produced in a conventional manner, as described, for example, in EP2499104.
- the polymers of ethylenically unsaturated monomers are preferably based on one or more ethylenically unsaturated monomers selected from the group comprising vinyl esters of carboxylic acids with 1 to 15 carbon atoms, methacrylic esters or acrylic esters of carboxylic acids with unbranched or branched alcohols with 1 to 15 carbon atoms, olefins or dienes, vinyl aromatics or vinyl halides.
- vinyl esters are vinyl acetate, vinyl propionate, vinyl butyrate, vinyl 2-ethylhexanoate, vinyl laurate, 1-methyl vinyl acetate, vinyl pivalate and vinyl esters of alpha-branched monocarboxylic acids having 5 to 13 carbon atoms, for example VeoVa9R or the VeoValOR (trade names from Shell). Vinyl acetate is particularly preferred.
- Preferred methacrylic esters or acrylic esters are esters of unbranched or branched alcohols having 1 to 15 carbon atoms, such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, especially norbornyl acrylate methyl acrylate, methyl methacrylate, n-butyl acrylate and 2-ethylhexyl acrylate are preferred.
- Preferred olefins or dienes are ethylene, propylene and 1,3-butadiene.
- Preferred vinyl aromatics are styrene and vinyl toluene.
- a preferred vinyl halide is vinyl chloride.
- auxiliary monomers can be copolymerized, in particular from 0 to 20% by weight, preferably from 0.1 to 10% by weight, based on the total weight of the base polymer.
- auxiliary monomers are ethylenically unsaturated mono- and dicarboxylic acids, preferably acrylic acid, methacrylic acid, fumaric acid and maleic acid; ethylenically unsaturated carboxylic acid amides and nitriles, preferably acrylamide and acrylonitrile; Mono- and diesters of fumaric acid and maleic acid such as the diethyl and diisopropyl esters, as well as maleic anhydride, ethylenically unsaturated sulfonic acids or their salts, preferably vinylsulfonic acid, 2-acrylamido-2-methyl-propanesulfonic acid.
- pre-crosslinking comonomers such as multiply ethylenically unsaturated comonomers, for example divinyladipate, diallyl maleate, allyl methacrylate or triallyl cyanurate, or postcrosslinking comonomers, for example acrylamidoglycolic acid (AGA), methylacrylamidoglycolic acid methyl ester (MAGME), methyl acrylamide (N-methylol), acrylamide (N-methylol).
- AGA acrylamidoglycolic acid
- MAGME methylacrylamidoglycolic acid methyl ester
- NMMA N-methylol allyl carbamate
- alkyl ethers such as isobutoxy ether or esters of N-methylol acrylamide, N-methylol methacrylamide and N-methylol allyl carbamate.
- Epoxy-functional comonomers such as glycidyl methacrylate and glycidyl acrylate are also suitable. Further examples are silicon-functional comonomers, such as acryloxypropyltri (alkoxy) and methacryloxypropyltri (alkoxy) silanes, vinyltrialkoxysilanes and vinylmethyldialkoxysilanes, which may contain, for example, methoxy, ethoxy and ethoxypropylene glycol ether radicals as alkoxy groups.
- Monomers with hydroxy or CO groups may also be mentioned, for example methacrylic acid and acrylic acid hydroxyalkyl esters such as hydroxyethyl, hydroxypropyl or hydroxybutyl acrylate or methacrylate, and compounds such as diacetone acrylamide and acetylacetoxyethyl acrylate or methacrylate. Further examples are also vinyl ethers, such as methyl, ethyl or isobutyl vinyl ether.
- suitable homopolymers and copolymers are vinyl acetate homopolymers, copolymers of vinyl acetate with ethylene, copolymers of vinyl acetate with ethylene and one or more other vinyl esters, copolymers of vinyl acetate with ethylene and acrylic acid esters, mixed polymers of vinyl acetate with ethylene and vinyl chloride, styrene Rol-acrylic acid ester copolymers, styrene-1,3-butadiene copolymers.
- Vinyl acetate homopolymers are preferred; Mischpolymeri sate of vinyl acetate with 1 to 40 wt .-% ethylene; Mischpolyme risate of vinyl acetate with 1 to 40 wt .-% ethylene and 1 to 50 wt .-% of one or more other comonomers from the group of vinyl esters with 1 to 12 carbon atoms in the carboxylic acid radical such as vinyl propionate, vinyl laurate, vinyl esters of alpha- branched carboxylic acids with 5 to 13 carbon atoms such as VeoVa9R, VeoValOR, VeoVallR; Copolymers of vinyl acetate, 1 to 40% by weight of ethylene and preferably 1 to 60% by weight of acrylic acid esters of unbranched or branched alcohols having 1 to 15 carbon atoms, in particular n-butyl acrylate or 2-ethylhexyl acrylate; and copolymers with 30 to 75 wt .-%
- (Meth) acrylic acid ester polymers are also preferred, such as copolymers of n-butyl acrylate or 2-ethylhexyl acrylate or copolymers of methyl methacrylate with n-butyl acrylate and / or 2-ethylhexyl acrylate and, if appropriate, ethylene; Styrene-acrylic acid ester copolymers with one or more mo- nomers from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate; Vinyl acetate-acrylic acid ester copolymers with one or more monomers from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate and optionally ethylene; Styrene-1,3-butadiene copoly
- the selection of monomers or the selection of the proportions by weight of the comonomers is carried out in such a way that, in general, a glass transition temperature Tg of -50 ° C to + 50 ° C, preferably -30 ° C to + 40 ° C results.
- the glass transition temperature Tg of the polymer can be determined in a known manner by means of differential scanning calorimetry (DSC).
- Tgn the glass transition temperature in Kelvin of the homopolymer of the monomer n. Tg values for homopolymers are listed in Polymer Handbook 2nd Edition, J. Wiley & Sons, New York (1975).
- Suitable protective colloids are, for example, polyvinyl alcohols; Polyvinyl acetals; Polyvinyl pyrrolidones; Polysaccharides in water-soluble form such as starches (amylose and amylopectin), celluloses and their carboxymethyl, methyl, hydroxyethyl, hydroxypropyl derivatives, dextrins and cyclodextrins; Proteins such as casein or caseinate, soy protein, gelatin; Lignin sulfonates; synthetic polymers such as poly (meth) acrylic acid, copolymers of (meth) acrylates with carboxyl-functional comonomer units, poly (meth) acrylamide, polyvinyl sulfonic acids and their water-soluble copolymers; Melamine formaldehyde sulfonates, naphthalene formaldehyde sulfonates, styrene maleic acid and vinyl ether maleic acid copolymers.
- Partially saponified or fully saponified polyvinyl alcohols with a degree of hydrolysis of preferably 80 to 100 mol% are preferred.
- Partially saponified polyvinyl alcohols with a degree of hydrolysis of 80 to 95 mol%, in particular with a Höppler viscosity, in 4% aqueous solution of 1 to 30 mPas (Höppler method at 20 ° C., DIN 53015) are particularly preferred.
- Most preferred are polyvinyl alcohols with a hydrolysis degree of 85 to 94 mol%, in particular with a Höppler viscosity, in 4% aqueous solution of 3 to 15 mPas (Höppler method at 20 ° C., DIN 53015).
- the protective colloids mentioned can be obtained using methods known to the person skilled in the art.
- Protective colloids are contained in an amount of preferably 1 to 30% by weight, particularly preferably 3 to 20% by weight, based on the total weight of the polymers of ethylenically unsaturated monomers.
- the protective colloid-stabilized polymers based on ethylenically unsaturated monomers are preferably in the form of water-redispersible powders and particularly preferably in the form of aqueous dispersions.
- the mixtures contain preferably 30 to 99.9 wt .-%, particularly preferably 80 to 99.7 wt .-% and most preferably 90 to 99.5 wt .-% of protective colloid-stabilized polymers based on ethylenically unsaturated monomers, based on the dry weight of the mixtures.
- Mixtures containing protective colloid-stabilized polymers based on ethylenically unsaturated monomers preferably contain 0.1 to 70% by weight, particularly preferably 0.3 to 20% by weight and most preferably 0.5 to 10% by weight Superabsorbents, based on the dry weight of the mixtures.
- thickeners are polysaccharides such as cellulose ethers and modified cellulose ethers, cellulose esters, starch ethers, guar gum, xanthan gum, polycarboxylic acids such as poly acrylic acid, or their esters or partial esters or their amides or partial amides or alkali and alkaline earth salts, polyacrylates, polyvinylpyrrolidone, casein or associative acting thickeners such as polyurethane thickeners or polyvinyl alcohols.
- Polycarboxylic acids or poly acrylates acting as thickeners preferably contain no alkylene oxide unit.
- Thickeners are generally different from liquefiers. Thickeners are preferably different from protective colloids.
- Thickeners have molecular weights of preferably> 4000 g / mol, particularly preferably> 10000 g / mol and most preferably> 20,000 g / mol.
- Methyl cellulose ether, methylhydroxyethyl cellulose, methylhydroxypropyl cellulose and hydroxyethyl cellulose are preferred.
- Inorganic thickeners, in particular phyllosilicates such as bentonites or hectorites, are also preferred.
- the blends preferably contain 1 to 99.9% by weight, more preferably 5 to 99% by weight, particularly preferably 30 to 95% by weight and most preferably 50 to 90% by weight of thickeners, based on the dry weight of the mixtures.
- Examples of setting accelerators are alkali salts and alkaline earth potassium salts of inorganic acids such as (earth) alkali carbonates, chlorides, sulfates, nitrates or phosphates; Aluminum compounds such as alkali aluminates; Silicates such as meta-, disilicates and hydrosilicates; Alkali hydroxides; Alkali salts and alkaline earth salts of organic acids such as (earth) alkali salts of carboxylic acids with 1 to 4 carbon atoms; Alkanolamines; single or double NH2-terminated polyalkylene glycols such as single or double amino terminated polyethylene glycols (PEO), single or double amino terminated polypropylene glycols (PPO), as well as single or double amino terminated EO-PO copolymers.
- inorganic acids such as (earth) alkali carbonates, chlorides, sulfates, nitrates or phosphates
- Aluminum compounds such as alkali
- Preferred setting accelerators are alkali carbonates, alkali hydroxides, aluminum sulfate, alkali aluminates, aluminum hydroxides, alkali silicates, (earth) alkali formates, (earth) alkali acetates, (earth) alkali propionates, (earth) alkali butyrates, (earth) alkali Oxa late, (earth) alkali malonates, N, N, N ', N'-tetrakis (2-hydroxypropyl) ethylenediamine, ethanolamine, diethanolamine, triethanolamine, N-methyl-diethanolamine, triisopropanolamine, N, N-dimethylethanolamine.
- Potassium hydroxide, potassium carbonate, sodium carbonate, potassium aluminate, sulfoaluminates, calcium sulfoaluminate, water glass, calcium formate, calcium acetate, triisopropanolamine, diethanolamine, triethanolamine, N-methyldiethanolamine are particularly preferred.
- the blends preferably contain 1 to 99.9% by weight, more preferably 5 to 99% by weight, particularly preferably 30 to 95% by weight and most preferably 50 to 90% by weight of setting accelerators, based on the dry weight of the mixes.
- setting retarders are hydroxycarboxylic acids or dicarboxylic acids or their salts, alkali tetraborates such as sodium tetraborate, phosphates, saccharides such as sucrose and pen taerythritol.
- Preferred hydroxycarboxylic acids are tartaric acid, gluconic acid, citric acid, malic acid, 2-methyl malic acid and their calcium salts.
- Preferred dicarboxylic acids are oxalic acid, succinic acid, fumaric acid and itaconic acid.
- Preferred saccharides are sucrose, glucose, fructose and sorbitol.
- Tartaric acid, citric acid and their calcium salts as well as sucrose, glucose and fructose are particularly preferred.
- the mixtures preferably contain 1 to 99.9% by weight, particularly preferably 5 to 90% by weight and most preferably 40 to 80% by weight of setting retarders, based on the dry weight of the mixtures.
- Fibers can, for example, be based on natural or synthetic fiber materials, for example on organic or inorganic materials. Fibers are also known as fibrids. Examples of natural, organic fibers are cotton, hemp, jute, flax, wood fibers, cellulose, viscose, leather fibers or sisal. Examples of synthetic organic fibers are viscose fibers, polyamide fibers, polyester fibers, polyacrylonitrile fibers, Dralon fibers, Po lyethylene fibers, polypropylene fibers, polyvinyl alcohol fibers or aramid fibers.
- Inorganic fibers are, for example, glass fibers, carbon fibers, mineral wool fibers or metal fibers. Cotton fibers, polyacrylonitrile fibers and cellulose fibers are preferred. Cellulose fibers are preferred. The fibers have a length of preferably 0.1 ⁇ m and 16 mm, preferably 0.5 ⁇ m to 1 mm, particularly preferably 1 ⁇ m to 500 ⁇ m. The cellulose fibers have a fiber diameter of preferably ⁇ 10 ⁇ m.
- the blends preferably contain 1 to 99.9% by weight, particularly preferably 5 to 90% by weight and most preferably 40 to 80% by weight of fibers, based on the dry weight of the blends.
- defoamers are mineral oils, vegetable oils, fats, fatty acids, fatty acid esters, fatty alcohols, metal soaps, silicones, liquid hydrocarbons and acetylenic diol derivatives, in particular gemini surfactants.
- Nonylphenol, castor oil, kerosene, liquid paraffin, animal oil, sesame oil, castor oil, oleic acid, stearic acid, diethylene glycol laurate, glycerol monorecinolate, alkenyl succinic acid derivatives, sorbitol monolaurate, sorbitol trioleate, natural wax are preferred; linear or branched fatty alcohols, acetylene alcohols, glycols, acrylate polyamine, aluminum stearate, calcium oleate, silicone oil, organically modified polysiloxane, fluorosilicone oil.
- Gemini surfactants are also preferred.
- Gemini surfactants generally consist of two hydrophilic head groups that have a spacer are connected and each carry a mostly hydrophobic tail group, as described in EP1916275.
- Preferred Gemini surfactants are alkyne derivatives containing two alcohol groups. Alkynediol derivatives in which one or both of the alcohol groups are substituted by polyethylene glycol radicals are particularly preferred.
- the blends preferably contain 1 to 99.9% by weight, particularly preferably 5 to 90% by weight and most preferably 40 to 80% by weight of defoamers, based on the dry weight of the blends.
- additives are preservatives, film forming aids, dispersants, foam stabilizers, plasticizers, acids, bases, buffers, powder additives, pigments or other dyes, flame retardants such as aluminum hydroxide, biocides and crosslinkers such as metal or semi-metal oxides, in particular special boric acid or polyborates, or Dialdehydes, such as glutaraldehyde.
- Additives are preferably contained in the mixtures from 0 to 30% by weight, particularly preferably from 0.1 to 20% by weight, based on the dry weight of the mixtures. Mixtures which do not contain any additive are also particularly preferred.
- the mixtures do not contain any mineral binders. Examples of mineral binders are given below.
- the mixtures can also contain one or more fillers. Examples of fillers are given below.
- the blends preferably contain ⁇ 70% by weight, more preferably ⁇ 60% by weight, even more preferably d 50% by weight, and particularly preferably d 5% by weight fillers, based on the dry weight of the blends . Most preferably no fillers are included.
- the mixtures preferably do not contain any liquefiers, super liquefiers and / or plasticizers. Because it is obvious- The fact that the viscosity of building material formulations can be reduced by using such compounds. Beispie le for liquefiers are polyalkylene oxides, especially what water-soluble polyalkylene oxides.
- superplasticizers are generally (meth) acrylic acid polymers, in particular polycarboxylate ethers such as copolymers of (meth) acrylic acid and ethylenically unsaturated polyalkylene oxides, lignin sulfonates, naphthalene sulfonates, melamine sulfonates, styrene-maleic acid copolymers or styrene-maleic anhydride copolymers Egg whites.
- polycarboxylate ethers such as copolymers of (meth) acrylic acid and ethylenically unsaturated polyalkylene oxides, lignin sulfonates, naphthalene sulfonates, melamine sulfonates, styrene-maleic acid copolymers or styrene-maleic anhydride copolymers Egg whites.
- branched or unbranched poly mers with polyether side chains especially comb polymers with polyether side chains, naphthalene sulfonate-formaldehyde condensates and, optionally sulfonated, melamine resins and melamine sulfonate-formaldehyde condensates.
- the invention also relates to processes for producing the mixtures by using one or more superabsorbents and one or more additives selected from the group comprising protective colloid-stabilized polymers based on one or more ethylenically unsaturated monomers, thickeners, setting accelerators, setting retarders, defoamers and fibers and optionally one or more additives are mixed, with the proviso that no mineral binders are used.
- Mixtures in the form of dry mixes can be obtained, for example, by using one or more or all of the starting materials in aqueous form and then drying them. Dry mixes are preferably produced by mixing starting materials in solid form.
- the mixtures are preferably in aqueous form.
- One or more or all of the starting materials can be used in aqueous form for their preparation.
- Dry mixes are preferably converted into aqueous mixes by adding water. Mixing and any drying can be carried out in conventional devices using conventional methods.
- the mixing rule can also be carried out before, during or after any grinding of starting materials present in solid form.
- the invention also relates to processes for the manufacture of building material formulations, in particular aqueous building material formulations, by mixing one or more mineral binders, optionally one or more fillers and optionally one or more additives, characterized in that one or more mixtures are mixed in, which contain one or more superabsorbents and one or more additives selected from the group comprising protective colloid-stabilized polymers based on one or more ethylenically unsaturated monomers, thickeners, setting accelerators, setting retarders, defoamers and fibers, with the proviso that the mixtures contain no mineral binders .
- the building material formulations preferably contain 0.001 to 10% by weight, particularly preferably 0.005 to 2% by weight and most preferably 0.01 to 0.8% by weight of superabsorbent, based on the dry weight of the building material formulations.
- the building material formulations preferably contain 0.01 to 60% by weight, particularly preferably 0.1 to 40% by weight and most preferably 1 to 25% by weight of additives, based on the dry weight of the building material formulations.
- the building material formulations preferably contain 0.1 to 50% by weight, particularly preferably 0.5 to 30% by weight and most preferably 1 to 25% by weight of protective colloid-stabilized polymers, based on the dry weight of the building material formulations.
- Polymers stabilized by protective colloid and based on one or more ethylenically unsaturated monomers and / or thickeners are preferably incorporated into the building material formulations exclusively through the blends, that is to say not incorporated into the building material formulations independently of the blends.
- Suitable mineral binders are, for example, cement, especially Portland cement, aluminate cement, especially calcium sulfo-aluminate cement, trass cement, slag cement, magnesia cement, phosphate cement, or blast furnace cement, as well as mixed cements, filling cements, fly ash, slag sand, hydrated lime, white lime hydrate, calcium oxide ( unslaked lime) and gypsum, such as alpha hemihydrate, beta hemihydrate, anhydrite or CaSCy dihydrate.
- Portland cement, aluminate cement and Wilsontenze ment, as well as mixed cements, filler cements, hydrated lime, white lime hydrate or gypsum, such as alpha hemihydrate or anhydrite, are preferred.
- the building material formulations preferably contain 1 to 90% by weight, particularly preferably 5 to 45% by weight and most preferably 10 to 35% by weight of mineral binders, based on the dry weight of the building material formulations.
- suitable fillers are quartz sand, quartz powder, limestone powder, calcium carbonate, dolomite, clay, chalk, white hydrated lime, talc or mica, rubber granulate or hard fillers such as aluminum silicates, corundum, basalt, carbides such as silicon carbide or titanium carbide, or fillers with a pozzolanic reaction, such as fly ash, metakaolin, microsilica, diatomaceous earth. Quartz sand, quartz powder, limestone powder, calcium carbonate, calcium magnesium carbonate (Do lomit), chalk or white lime hydrate are preferred as fillers.
- Fillers are preferably incorporated into the building material formulations independently of the mixtures, that is to say as separate components.
- the building material formulations preferably contain 10 to 99% by weight, particularly preferably 30 to 90% by weight and most preferably 50 to 85% by weight of fillers, based on the dry weight of the building material formulations.
- the building material formulations can optionally also contain additives, for example crosslinkers such as metal or semi-metal oxides, in particular boric acid or polyborates, or dialdehydes such as glutaraldehyde, preservatives, film-forming aids, dispersants, foam stabilizers, liquefiers, flow agents and flame retardants (e.g. aluminum hydroxide), Dyes or biocides.
- additives for example crosslinkers such as metal or semi-metal oxides, in particular boric acid or polyborates, or dialdehydes such as glutaraldehyde, preservatives, film-forming aids, dispersants, foam stabilizers, liquefiers, flow agents and flame retardants (e.g. aluminum hydroxide), Dyes or biocides.
- additives for example crosslinkers such as metal or semi-metal oxides, in particular boric acid or polyborates, or dialdehydes such as glutaraldehyde, preservatives, film-forming aids,
- the building material formulations preferably contain 0.001 to 30% by weight, particularly preferably 0.01 to 8% by weight and most preferably 0.03 to 4% by weight of additives, based on the dry weight of the building material formulations.
- the building material formulations are particularly suitable for the production of building adhesives, leveling compounds, plasters, fillers, grouts, sealing slurries or thermal insulation composite systems.
- Tile adhesives, skim coats or full heat protection adhesives or embedding mortars or plasters in general are preferred areas of application for dispersion powder compositions.
- Preferred areas of application are leveling compounds, particularly preferred leveling compounds are self-leveling floor leveling compounds and screeds.
- the mixtures according to the invention can improve the fresh mortar properties.
- the fresh mortars according to the invention have an advantageously low viscosity and, associated therewith, a creamy consistency, as desired by the user, and can be easily processed.
- the mixtures according to the invention can also improve the wetting effect and the stickiness can be increased by fresh mortars, which after their application and hardening is reflected in an improved adhesion to the substrate and increases the tensile strength and durability of the construction product.
- the open time and correction time as well as the pot life and the processing window of the fresh mortar can be extended and premature stiffening or skin formation or even encrustation on the mortar surface can be counteracted.
- Freshly mixed mortars keep their consistency over a longer period of time and this even at elevated temperatures of, for example, over 30 ° C or 35 ° C and are generally very temperature-stable. After the fresh mortar has been troweled on, tiles can still be laid very easily and with less pressure in the mortar bed and their position corrected even after a longer period of time.
- reinforcing fabric can be inserted into the embedding mortar over a longer period of time according to the invention.
- the early and final strength of the hardened mortar can also be improved with the mixtures according to the invention. This allows the proportion of binder in the building material formulations to be reduced. This allows the costs and the CCh balance of the building material formulations to be reduced. Overall, the solid mortars produced according to the invention also have the desired properties after the mineral binders have set.
- the otherwise customary use of cellulose ethers such as methyl cellulose
- the manufacturing costs of building material formulations can be reduced and the Reduce the workload for compounders or manufacturers of building material mixtures, which is associated with the provision and use of a wide variety of cellulose ether derivatives for the respective specific purpose of the mortar.
- the amount of cellulose ethers used can be reduced by preferably 5 to 100% by weight, particularly preferably 10 to 60% by weight and most preferably 15 to 50% by weight, based on that in conventional construction Amounts of cellulose ethers used in substance formulations (dry / dry).
- Starvis S 5514 F (trade name of BASF): superabsorbent
- VINNAPAS 5010 N (trade name of Wacker Chemie): water-redispersible, polyvinyl alcohol stabilized vinyl acetate-ethylene copolymer;
- Tylose H 300 P2 (trade name of SE Tylose): Methylcellulo se;
- the superabsorbents and additives mentioned below were mixed in an Eirich mixer for a total of 10 minutes at room temperature.
- h) 30 g superabsorbent II and 50 g tartaric acid were mixed in an Eirich mixer for a total of 10 minutes at room temperature.
- Example 5
- Example 4 The fresh mortars produced in Example 4 were left to stand for 10 minutes and then mixed up again with a hand mixer for 20 seconds.
- the wettability was then determined based on DIN EN 1347.
- unglazed ceramic tiles of the Bla type (EN 12004) measuring 5 cm x 5 cm were placed after 10, 20 and 30 minutes, respectively. After a total of 40 minutes, the tiles were turned over and the wetting of the reverse side of the tiles was determined as a percentage of the total tile area.
- Example 6i Analogously to Example 4c), 198.9 g of the dry mortar produced under Example 6i) were sprinkled with mixing into the aqueous mixture produced under Example 2c). The mixture was mixed with the hand mixer. The total mixing time was 20 seconds.ii) Test mortar:
- Example 4d Analogously to Example 4d, 199.9 g of the dry mortar produced under Example 6ii) were sprinkled with mixing into the aqueous mixture produced under Example 2d). The mixture was mixed with the hand mixer. The total mixing time was 20 seconds.
- test mortars 6i) and 6ii) according to the invention show, compared to the corresponding reference mortars from Example 4c) and 4d), that with the procedure according to the invention, the amount of methyl cellulose used can be reduced and the wetting ability of the mortar is nevertheless improved or even further Reduction of the amount of methyl cellulose can be adjusted to a value that is still acceptable.
- the test mortars according to the invention from Example 6) also advantageously have a lower viscosity than the corresponding reference mortars from Examples 4c) and 4d).
- Comparative Example 7 The aqueous premixes of Comparative Example 7 contained superabsorbents, but no further additive. i) Preparation of the aqueous, superabsorbent-containing premix:
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Abstract
Description
Claims
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/EP2020/061240 WO2021213652A1 (de) | 2020-04-22 | 2020-04-22 | Superabsorber enthaltende abmischungen |
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| EP (1) | EP4139265A1 (de) |
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| TW210994B (de) * | 1991-09-03 | 1993-08-11 | Hoechst Ag | |
| GB9421984D0 (en) | 1994-11-01 | 1994-12-21 | Sandoz Ltd | Improvements in or relating to organic compounds |
| DE10202039A1 (de) | 2002-01-18 | 2003-07-24 | Basf Ag | Mischungen aus hydrogel-formenden Polymeren und Baustoffen |
| DE10218259A1 (de) * | 2002-04-24 | 2003-11-13 | Concert Gmbh | Geprägtes Airlaid-Produkt als Flüssigkeitsabsorbens |
| DE10226088A1 (de) * | 2002-06-12 | 2004-03-04 | Elotex Ag | Additiv für hydraulisch abbindende Systeme, die hydraulisch abbindenden Mischungen sowie deren Verwendung |
| DE10337012A1 (de) * | 2003-08-12 | 2005-03-10 | Wolff Cellulosics Gmbh & Co Kg | Celluloseetherzusammensetzung für die Extrusion mineralischer Formkörper sowie ein Verfahren zur Extrusion mineralischer Formkörper unter Verwendung dieser Celluloseetherzusammensetzung |
| US20060070341A1 (en) * | 2004-08-20 | 2006-04-06 | Paul Schmidt | Unitized fibrous constructs having functional circumferential retaining elements |
| DE102006050336A1 (de) | 2006-10-25 | 2008-05-08 | Wacker Polymer Systems Gmbh & Co. Kg | Geminitensid enthaltende Dispersionspulverzusammensetzungen |
| DE102007027470A1 (de) | 2007-06-14 | 2008-12-24 | Construction Research & Technology Gmbh | Polymervergütete Baustofftrockenmischungen |
| DE102007027477A1 (de) | 2007-06-14 | 2009-01-02 | Construction Research & Technology Gmbh | Baustofftrockenmischungen basierend auf Calciumsulfat |
| CN102712530B (zh) | 2009-11-11 | 2015-01-14 | 巴斯夫聚合建材有限公司 | 干灰浆混合物 |
| JP5628087B2 (ja) | 2010-05-17 | 2014-11-19 | ダウ グローバル テクノロジーズ エルエルシー | 乾燥モルタル配合物のための再分散可能な粉体組成物 |
| DE102010039315A1 (de) * | 2010-08-13 | 2012-02-16 | Wacker Chemie Ag | Verwendung von in Wasser redispergierbaren Polymerpulvern zur Verbesserung der Lagerstabilität von Zement oder zementären Trockenmörteln |
| DE102013219325A1 (de) * | 2013-09-25 | 2015-03-26 | Wacker Chemie Ag | Verwendung von modifizierten wasserlöslichen Polymeren als Vernetzungshilfsmittel |
| WO2017025770A1 (en) * | 2015-08-07 | 2017-02-16 | Cemex Research Group Ag | Castable material based on cementitious material with shrinkage resistance |
| CN109437658B (zh) * | 2018-12-05 | 2021-07-27 | 湖南圣华节水科技股份有限公司 | 一种混凝土保水剂及其制备方法 |
| EP3708555A1 (de) * | 2019-03-15 | 2020-09-16 | Sika Technology Ag | Schrumpfungsminderer für mineralische bindemittelzusammensetzung und dessen verwendung |
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| WO2021213652A1 (de) | 2021-10-28 |
| CN115485254A (zh) | 2022-12-16 |
| BR112022021255A2 (pt) | 2022-12-06 |
| CN115485254B (zh) | 2023-12-19 |
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