WO2003076711A1 - Revetement de sol contenant des polymeres superabsorbants - Google Patents

Revetement de sol contenant des polymeres superabsorbants Download PDF

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Publication number
WO2003076711A1
WO2003076711A1 PCT/EP2003/002190 EP0302190W WO03076711A1 WO 2003076711 A1 WO2003076711 A1 WO 2003076711A1 EP 0302190 W EP0302190 W EP 0302190W WO 03076711 A1 WO03076711 A1 WO 03076711A1
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WO
WIPO (PCT)
Prior art keywords
floor covering
water
polymers
polymer
absorbing
Prior art date
Application number
PCT/EP2003/002190
Other languages
German (de)
English (en)
Inventor
Stefan Kirsch
Volker Frenz
Original Assignee
Basf Aktiengesellschaft
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Filing date
Publication date
Application filed by Basf Aktiengesellschaft filed Critical Basf Aktiengesellschaft
Priority to AU2003215625A priority Critical patent/AU2003215625A1/en
Publication of WO2003076711A1 publication Critical patent/WO2003076711A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • D06N7/0073—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing the back coating or pre-coat being applied as an aqueous dispersion or latex
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/041—Polyacrylic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/126—Permeability to liquids, absorption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/14—Properties of the materials having chemical properties
    • D06N2209/148—Superabsorbing

Definitions

  • the invention relates to a floor covering, characterized in that the side of the floor covering to be bonded to the floor (rear for short) contains water-absorbing polymers or is coated with water-absorbing polymers.
  • the invention further relates to methods for producing the floor covering.
  • Floor coverings e.g. Carpets are generally glued to the surface.
  • Common adhesives are those based on aqueous polymer dispersions. The aqueous polymer dispersion is applied on one side to the substrate and then the floor covering is placed on the still moist substrate. It is desirable that the floor covering adheres as quickly as possible and is non-slip (wet suitability) despite the damp surface.
  • Object of the present invention were floor coverings that
  • Bonding on damp e.g. Adhere substrates coated with aqueous adhesive as quickly as possible.
  • the floor covering according to the invention contains water-absorbing polymers on its back or is coated on the back with such polymers so that these water-absorbing polymers can come into contact with the adhesive during the adhesive bonding.
  • the water-absorbing polymers can be natural or synthetic polymers, for example cellulose, starch, free-radically polymerized polymers, polyadducts, for example polyurethanes, polycondensates, for example polyester.
  • They are preferably polymers which are at least partially crosslinked.
  • the gel content of the polymers increases with the degree of crosslinking.
  • the water-absorbing polymers preferably have a gel content of at least 20% by weight, particularly preferably at least 50% by weight and very particularly preferably at least 80% by weight.
  • the gel content is determined by the following method:
  • the water-absorbing polymers absorb water preferably by swelling.
  • the proportion of non-crosslinked water-soluble constituents of the polymer is preferably low, generally less than 50% by weight, in particular less than 20% by weight, particularly preferably less than 5% by weight, very particularly preferably less than 1% by weight; in particular, the proportion of water-soluble constituents is less than 0.1% by weight, based on the polymer, or the polymer is free of water-soluble constituents.
  • Such hydrogel-forming polymers are also known as superabsorbents (SAP).
  • Preferred polymers are those which absorb more than 5 times, in particular more than 10 times their weight in water.
  • the water swellability of the polymer is determined by measuring the centrifuge retention capacity (CRC-Centrifuge Retention Capacity):
  • This method determines the free swellability of the polymer (hydrogel) in the tea bag.
  • CRC determined the free swellability of the polymer (hydrogel) in the tea bag.
  • the tea bag is placed in an excess of 0.9% by weight saline solution (at least 0.83 1 saline solution / 1 g polymer powder) for 30 minutes.
  • the tea bag is then centrifuged at 250 g for 3 minutes. The amount of liquid is determined by weighing the centrifuged tea bag.
  • the CRC is preferably 5 to 100 g / g, particularly preferably 10 to 60 g / g.
  • Preferred hydrogel-forming polymers are in particular polymers of (co) polymerized hydrophilic monomers, graft (co) polymers of one or more hydrophilic monomers on a suitable graft base, crosslinked cellulose or starch ethers, crosslinked carboxymethyl cellulose, partially crosslinked polyalkylene oxide or natural products which are swellable in aqueous liquids , such as guar derivatives, alginates and carrageenans.
  • Suitable graft bases can be of natural or synthetic origin.
  • polysaccharides and oligosaccharides examples are starch, cellulose or cellulose derivatives and other polysaccharides and oligosaccharides, polyvinyl alcohol, polyalkylene oxides, in particular polyethylene oxides and polypropylene oxides, polyamines, polyamides and hydrophilic polyesters.
  • Suitable polyalkylene oxides have, for example, the formula
  • R 1 and R 2 independently of one another are hydrogen, alkyl, alkenyl or aryl, X is hydrogen or methyl and n is an integer from 1 to 10,000.
  • R 1 and R 2 are preferably hydrogen, (Ci - C 4 ) alkyl, (C - C ⁇ ) alkenyl or phenyl.
  • Preferred hydrogel-forming polymers are crosslinked polymers with acid groups, which are preferably predominantly in the form of their salts, generally alkali metal or ammonium salts. Such polymers swell particularly strongly into gels on contact with aqueous liquids.
  • Polymers which are obtained by crosslinking polymerization or copolymerization of acid-bearing monoethylenically unsaturated monomers or their salts are preferred. Further it is possible to (co) polymerize these monomers without crosslinking agents and to crosslink them subsequently.
  • Monomers bearing such acid groups are, for example, monoethylenically unsaturated C 3 -C 5 -carboxylic acids or anhydrides such as 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.
  • monoethylenically unsaturated C 3 -C 5 -carboxylic acids or anhydrides such as 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.
  • monoethylenically unsaturated sulfonic or phosphonic acids for example vinylsulfonic acid, allylsulfonic acid, sulfoethylacrylate, sulfomethacrylate, sulfoprophylacrylate, sulfopropyl methacrylate, 2-hydroxy-3-acryloxypropylsulfonic acid, 2-hydroxy-3-methacryloxypropylsulfonic acid, vinylphosphonic acid, vinylphosphonic acid Allylphosphonic acid, styrene sulfonic acid and 2-acrylamido-2-methylpropane sulfonic acid.
  • the monomers can be used alone or as a mixture with one another.
  • Preferred monomers are acrylic acid, methacrylic acid, vinylsulfonic acid, acrylamidopropanesulfonic acid or mixtures of these acids, e.g. Mixtures of acrylic acid and methacrylic acid, mixtures of acrylic acid and acrylamidopropane sulfonic acid or mixtures of acrylic acid and vinyl sulfonic acid.
  • additional monoethylenically unsaturated compounds which do not carry acid groups but can be copolymerized with the monomers bearing acid groups.
  • monoethylenically unsaturated compounds which do not carry acid groups but can be copolymerized with the monomers bearing acid groups.
  • these include, for example, the amides and nitriles of monoethylenically unsaturated carboxylic acid, e.g. Acrylamide, methacrylamide and N-vinylformamide, N-vinyl acetamide, N-methyl vinyl acetate, acrylonitrile and methacrylonitrile.
  • Suitable compounds are, for example, vinyl esters of saturated C 1 -C 4 -carboxylic acids, such as vinyl formate, vinyl acetate or vinyl propionate, alkyl inyl ethers with at least 2 C atoms in the alkyl group, such as, for example, ethyl vinyl ether or butyl vinyl ether, esters of monoethylenically unsaturated C 3 to C ⁇ - carboxylic acids, for example esters of monohydric C 1 to cis alcohols and acrylic acid, methacrylic acid or maleic acid, half-esters of maleic acid, for example mono-methyl maleate, N-vinyl lactams such as N-vinyl pyrrolidone or N-vinyl caprolactam, acrylic acid and methacrylic acid esters of alkoxylated monohydric, saturated alcohols, for example alcohols having 10 to 25 carbon atoms which have been reacted with 2 to 200 moles of ethylene oxide and / or propylene oxide
  • These monomers which do not contain acid groups can also be used in a mixture with other monomers, e.g. Mixtures of vinyl acetate and 2-hydroxyethyl acrylate in any ratio. These monomers not carrying acid groups are added to the reaction mixture in amounts between 0 and 50% by weight, preferably less than 20% by weight.
  • the water-absorbing polymer preferably consists of at least 70% by weight of acrylic acid, methacrylic acid, acrylamide, methacrylamide or mixtures thereof.
  • Crosslinked polymers from monoethylenically unsaturated monomers bearing acid groups are preferred, which are optionally converted into their alkali metal or ammonium salts before or after the polymerization, and from 0 to 40% by weight, based on their total weight, no monoethylenically unsaturated monomers bearing acid groups.
  • Crosslinked polymers of monoethylenically unsaturated C 3 - to C ⁇ -carboxylic acids and / or their alkali metal or ammonium salts are preferred.
  • crosslinked polyacrylic acids are preferred whose acid groups are 5 to 30 mol%, preferably 5 to 20 mol%, particularly preferably 5 to 10 mol%, based on the monomers containing acid groups, as alkali metal or ammonium salts.
  • Compounds which have at least two ethylenically unsaturated double bonds can function as crosslinkers.
  • Examples of compounds of this type are N, N '-methylene bisacrylamide, polyethylene glycol diacrylates and polyethylene glycol dimethacrylates, which are each derived from polyethylene glycols having a molecular weight of 106 to 8500, preferably 400 to 2000, trimethylol propane triacrylate, trimethylol propane trimethacrylate, ethylene glycol, ethylene diacrylate acrylate, ethylene diacrylate acrylate, propylene glycol diacrylate propylene glycol dimethacrylate, butanediol diacrylate, Butandioldimeth- acrylate, hexanediol diacrylate, hexanediol di ethacrylate, allyl methacrylate, diacrylates and dimethacrylates of block copolymers of ethylene oxide and propylene oxide, doubly or multiply with acrylic acid or methacryl
  • Water-soluble crosslinking agents are preferably used, for example N, N ⁇ -methylene bisacrylamide, polyethylene glycol diacrylates and polyethylene glycol dimethacrylates which are derived from addition products of 2 to 400 mol of ethylene oxide to 1 mol of a diol or polyol, vinyl ethers of addition products of 2 to 400 mol Ethylene oxide on 1 mole of a diol or polyol, ethylene glycol diacrylate, ethylene glycol dimethacrylate or triacrylates and trimethacrylates of addition products of 6 to 20 moles of ethylene oxide on 1 mole of glycerol, pentaerythritol triallyl ether and / or divinyl urea.
  • N, N ⁇ -methylene bisacrylamide polyethylene glycol diacrylates and polyethylene glycol dimethacrylates which are derived from addition products of 2 to 400 mol of ethylene oxide to 1 mol of a diol or polyol, vinyl ethers of addition
  • crosslinkers are compounds which contain at least one polymerizable ethylenically unsaturated group and at least one further functional group.
  • the functional group of these crosslinkers must be able to react with the functional groups, essentially the acid groups, of the monomers.
  • Suitable functional groups are, for example, hydroxyl, amino, epoxy and aziridino groups.
  • N-vinylimidazole, l-vinyl-2-methylimidazole and N-vinylimidazolines such as N-vinylimidazoline, l-vinyl-2-methylimidazoline, l-vinyl-2-ethylimidazoline or l-vinyl-2-propylimidazoline, which are in the form of free bases, in quaternized form or as a salt can be used in the polymerization.
  • Dialkylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate and diethylaminoethyl methacrylate are also suitable.
  • the basic esters are preferably used in quaternized form or as a salt. Furthermore e.g. Glycidyl (meth) acrylate can also be used.
  • crosslinkers are compounds which contain at least two functional groups which are able to react with the functional groups, essentially the acid groups of the monomers.
  • the functional groups suitable for this have already been mentioned above, ie hydroxyl, amino, epoxy, isocyanate, ester, amido and aziridino groups.
  • crosslinkers examples include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol, glycerol, polyglycerol, triethanolamine, propylene glycol, poly- propylene glycol, block copolymers of ethylene oxide and propylene oxide, ethanolamine, sorbitan fatty acid esters, ethoxylated sorbitan fatty acid esters, trimethylolpropane, pentaerythritol, 1, 3-butanediol, 1,4-butanediol, polyvinyl alcohol, sorbitol, starch, polyglycidyl ethers such as ethylene glycol diglyglycidyl glycol glycyl ether - cidyl ether, glycerol diglycidyl ether, glycerol polyglycidyl ether, diglycerol polyglycidyl ether, polyglycerol polyglycidyl
  • crosslinkers are polyvalent metal ions, which are able to form ionic crosslinks. Examples of such crosslinkers are magnesium, calcium, barium and aluminum ions. These crosslinkers are used, for example, as hydroxides, carbonates or bicarbonates. Other suitable crosslinkers are multifunctional bases which are also able to form ionic crosslinks, for example polyamines or their quaternized salts. Examples of polyamines are ethylene diamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, pentaethylene hexa in and polyethyleneimines as well as polyamines with molecular weights of up to 4000000 each.
  • crosslinkers are present in the reaction mixture, for example from 0.001 to 20% by weight and preferably from 0.01 to 14% by weight.
  • Ethoxylated trimethylolpropane triacrylate ETMPTA is a particularly preferred crosslinker.
  • the polymers can be prepared by customary polymerization processes. In particular, these are processes of radical polymerization, where the polymerization can be initiated thermally or photochemically. Details are described for example in DE-A-10 144 072 (OZ 52882).
  • the polymers are post-crosslinked on the surface.
  • crosslinking agents in particular the above-mentioned crosslinking agents, are known to the person skilled in the art and are e.g. in DE-A-10 144 072 (OZ 52882).
  • a measure for determining the surface post-crosslinking is the absorption under pressure (AUL Absorbency Under Load) (0.3 psi):
  • the measuring cell for determining the AUL 0.3 psi is a plexiglass cylinder with an inner diameter of 60 mm and a height of 50 mm, which has a glued-on stainless steel sieve bottom with a mesh size of 36 ⁇ m on the underside.
  • the measuring cell also includes a plastic plate with a diameter of 59 mm and a weight that can be placed in the measuring cell together with the plastic plate. The plastic plate is loaded with the appropriate weight. To carry out the determination of the AUL 0.3 psi, the weight of the empty plexiglass cylinder and the plastic plate is determined and noted as Wo.
  • AUL absorption under pressure
  • the AUL is preferably 5 to 100 g / g and very particularly preferably 5 to 50 g / g.
  • the average particle size (weight average) of the polymer particles of the water-absorbing polymer is preferably smaller
  • 2000 ⁇ m in particular less than 1500 ⁇ m and very particularly preferably less than 1000 ⁇ m, in particular less than 500 ⁇ m, or less than 250 ⁇ m.
  • the average particle size is generally above 10 ⁇ m, in particular above 20 ⁇ m and very particularly preferably above 50 ⁇ m.
  • the amount of the polymers in the floor covering is preferably 5 to 500 g, particularly preferably 10 to 250 g and very particularly preferably 20 to 200 g per square meter of floor covering.
  • Plastic floor coverings e.g. PVC, polyolefins, polyamide, polyester, polyurethane, polyacrylate, natural materials such as cotton, wool, jute etc. or any combination of these materials.
  • carpets that is to say textile floor coverings, in which at least one layer is built up from natural or synthetic fibers.
  • carpets of this type are constructed in several layers and consist at least of a decorative top and a bottom (back).
  • the side to be glued to the floor is coated with the water-absorbing polymer or the back contains the water-absorbing polymer.
  • the floor covering according to the invention can be produced by applying the water-absorbing polymer or its precursors to the back of the floor covering or already during or before the production of the floor covering to the components of the backing layer of the floor covering, for example the fibers of the layer and in the case of the precursors, the conversion to the water-absorbing polymer then takes place.
  • moistening the back or the superabsorbent with water is sufficient to fix the superabsorbent on the back.
  • the superabsorbent can be applied to the back as a powder and the back can then be moistened with water.
  • the polymer can also be initially applied to a
  • Carriers are coated, e.g. a nonwoven fabric, and this support is then applied to the floor covering, so that the polymer-coated support now forms the back of the floor covering.
  • the polymer can also be added to individual structural components of the floor covering during the production of the floor covering, so that the polymer is later in the floor covering on or in the back.
  • the polymer can be added to the fibers of the backing layer before this layer is made. Is the return side around a foam backing, the polymer can be added to the foam-forming components, eg a polymer latex.
  • precursors of the polymer in particular monomers and uncrosslinked prepolymers, can be applied accordingly instead of the polymer itself.
  • the handling and uniformity of the distribution in the floor covering may be advantageous here, since the precursors are generally in liquid form.
  • the implementation i.e. generally radical polymerization or crosslinking, to the polymer can advantageously be done by photochemical initiation, e.g. by high-energy radiation such as electron beams or preferably UV light. After the reaction, drying, e.g. with hot air, to remove volatile components.
  • photochemical initiation e.g. by high-energy radiation such as electron beams or preferably UV light.
  • drying e.g. with hot air, to remove volatile components.
  • the precursors of the polymer advantageously already contain a photoinitiator, e.g. a benzophenone derivative or acylphosphine oxide derivative.
  • a photoinitiator e.g. a benzophenone derivative or acylphosphine oxide derivative.
  • the floor covering according to the invention is preferably glued to a substrate or to the substrate.
  • Suitable substrates are e.g. Wooden floors, plastic floors, mineral substrates such as screed or concrete.
  • an aqueous adhesive is used for bonding.
  • the adhesive preferably contains an aqueous dispersion of a polymeric binder.
  • the polymeric binder can be polycondensates, for example polyesters or polyadducts, for example polyurethanes, or preferably polymers, which can be obtained by free-radical or ionic polymerization of ethylenically unsaturated compounds (monomers) (in short: polymers).
  • the polymeric binder is preferably in the form of an aqueous dispersion.
  • the polymeric binder is an aqueous polymer dispersion, as can be obtained by emulsion polymerization of monomers.
  • the polymer preferably consists of at least 40% by weight, particularly preferably at least 60% by weight, very particularly preferably at least 80% by weight, of so-called main monomers.
  • the main monomers are selected from C 1 -C 2 -alkyl (meth) acrylates, vinyl esters of carboxylic acids containing up to 20 C atoms, vinyl aromatics with up to 20 C atoms, ethylenically unsaturated nitriles, vinyl halides, vinyl ethers from 1 to 10 Alcohols containing carbon atoms, aliphatic hydrocarbons with 2 to 8 carbon atoms and 1 or 2 double bonds or mixtures of these monomers.
  • Vinyl esters of carboxylic acids with 1 to 20 carbon atoms are e.g. B. vinyl laurate, stearate, vinyl propionate, vinyl vinyl acetate and vinyl acetate.
  • Suitable vinyl aromatic compounds are vinyl toluene, ⁇ - and p-methylstyrene, ⁇ -butylstyrene, 4-n-butylstyrene, 4-n-decylstyrene and preferably styrene.
  • nitriles are acrylonitrile and methacrylonitrile.
  • the vinyl halides are chlorine, fluorine or bromine-substituted ethylenically unsaturated compounds, preferably vinyl chloride and vinylidene chloride.
  • vinyl ethers examples include B. vinyl methyl ether or vinyl isobutyl ether. Vinyl ethers of alcohols containing 1 to 4 carbon atoms are preferred.
  • Ci to Cio-alkyl acrylates are preferred as principal monomers and methacrylates, acrylates, in particular Ci to C alkyl acrylates and ß -meth- and vinylaromatics, especially styrene, and mixtures thereof.
  • Methyl acrylate, methyl methacrylate, ethyl acrylate, n-butyl acrylate, n-hexyl acrylate, octyl acrylate and 2-ethylhexyl acrylate, styrene and mixtures of these monomers are very particularly preferred.
  • the free-radically polymerized polymer may contain further monomers, e.g. B. monomers with carboxylic acid, sulfonic acid or phosphonic acid groups.
  • Carboxylic acid groups are preferred. May be mentioned for. As acrylic acid, methacrylic acid, itaconic acid, maleic acid or fumaric acid.
  • monomers are e.g. also monomers containing hydroxyl groups, in particular C ⁇ -C ⁇ o-hydroxyalkyl (meth) acrylates, (meth) acrylamide.
  • Phenyloxyethyl glycol mono (meth) acrylate, glycidyl acrylate, glycidyl methacrylate, amino (meth) acrylates such as 2-aminoethyl (meth) acrylate may also be mentioned as further monomers.
  • Crosslinking monomers may also be mentioned as further monomers.
  • Monomers with hydrolyzable Si groups may also be mentioned.
  • the polymers are prepared by emulsion polymerization, so it is an emulsion polymer.
  • the manufacture can e.g. B. also by solution polymerization and subsequent dispersion in water.
  • ionic and / or nonionic emulsifiers and / or protective colloids or stabilizers are used as surface-active compounds.
  • aqueous dispersions of the polymer are generally obtained with solids contents of from 15 to 75% by weight, preferably from 40 to 75% by weight.
  • the polymer thus produced is preferably used in the form of its aqueous dispersion.
  • the glass transition temperature of the polymeric binder or of the emulsion polymer is preferably -60 to + 40 ° C, particularly preferably -50 to + 20 ° C and very particularly preferably -40 to + 10 ° C.
  • the glass transition temperature can be determined by conventional methods such as differential thermal analysis or differential scanning calorimetry (see e.g. ASTM 3418/82, so-called “midpoint temperature”).
  • the aqueous adhesive can contain further additives.
  • the aqueous adhesive preferably contains at least one filler.
  • the aqueous adhesive preferably contains at least one filler.
  • finely ground or precipitated chalks with an average particle diameter of generally between 2 and 50 ⁇ m and / or quartz powder with a customary average particle diameter of 3 to 50 ⁇ m.
  • the adhesive can also contain wetting or dispersing agents e.g. for the fillers, thickeners and also e.g. also contain other usual additives, such as defoamers and preservatives.
  • the adhesive may include tackifiers such as rosins or modified rosins e.g. based on hydrogenated abietic acid or abietic acid esters.
  • the tackifier content can preferably be 1 to 40 parts by weight, based on 100 parts by weight of the total of binder and filler.
  • the aqueous adhesive can be prepared in a simple manner by adding the fillers and, if appropriate, further additives to the aqueous polymer dispersion obtained in the emulsion polymerization.
  • the polymeric binder is first dried and is then present as a redispersible powder. When used later, the powder is mixed with the other additives and water is added.
  • the water content of the finished preparation is generally 7 to 50, in particular 10 to 30,% by weight, based on the total aqueous adhesive.
  • the adhesive can e.g. be applied to the surface with a toothed rack. After the usual ventilation, the floor covering is inserted.
  • the floor covering according to the invention brings about a significant improvement in the wet suitability.
  • the improvement in wet suitability also occurs when using adhesives with a long open time, which, because of their chemical composition, generally have a lower adhesive strength and associated lower wet suitability.
  • the floor covering according to the invention also improves the indoor climate, since moisture is stored and released evenly over a longer period.
  • Acronal ® A 378 (an aqueous polyacrylate dispersion, TG -22 ° C) was mixed with filler and with other additives. Table 1 shows the mixture components and their parts by weight. After the mixture has been stirred well and mixed well, it is left to stand for 8 days before the adhesive is processed further. Table 1
  • the adhesive is applied with a DIN squeegee to a cement fiber board (eg Eternit 2000) (20 x 50 cm) in the peeling direction.
  • Application quantity approx. 350 - 400 g / m 2 .
  • Flexible floor coverings such as needle felt coverings, carpets with fleece backing or rubber flooring are placed in the adhesive bed after 10 minutes of airing and pressed with a 2.5 kg roller by rolling back and forth 3 times. In the specified time intervals, the coverings are removed with a trigger device and the increase in the peeling resistance in N / 5 cm is determined.
  • Base 1 without SAP base 2 15g / m 2 consisting of 80 parts SAP powder and 20 parts Acronal S 430 P powder
  • Dispersion powder styrene / acrylate powder, ⁇ g - 15 ° C
  • Acronal ® A 380 was used as the dispersion and the formulation was additionally mixed with 10% of an aqueous Latekoll ® D thickener solution (2%).
  • Eternit 2000 was used as the substrate.
  • the adhesive is applied with a 2 mm DIN squeegee to a Zemen fiber board in the pull-off direction.
  • Application quantity approx. 350 - 400 g / m 2 .
  • a flexible needle felt covering is placed in the adhesive bed after the flash-off times given in table 3 and pressed with 3 rolls back and forth with a 2.5 kg roller. The test is carried out by peeling off at 90 ° in the fume cupboard at 725 mm / minute immediately after gluing.
  • Table 3 The results show that the open time is significantly longer when using a floor covering with a modified back.
  • the flash-off time in particular can be shortened.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un revêtement de sol caractérisé en ce que la face du revêtement de sol destinée à être collée au sol (ou face arrière) contient des polymères hydroabsorbants ou est recouverte de polymères hydroabsorbants.
PCT/EP2003/002190 2002-03-08 2003-03-04 Revetement de sol contenant des polymeres superabsorbants WO2003076711A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003215625A AU2003215625A1 (en) 2002-03-08 2003-03-04 Floor covering containing superabsorbent polymers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10210134.5 2002-03-08
DE2002110134 DE10210134A1 (de) 2002-03-08 2002-03-08 Bodenbelag mit superabsorbierenden Polymeren

Publications (1)

Publication Number Publication Date
WO2003076711A1 true WO2003076711A1 (fr) 2003-09-18

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AU (1) AU2003215625A1 (fr)
DE (1) DE10210134A1 (fr)
WO (1) WO2003076711A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1468843A2 (fr) * 2003-04-17 2004-10-20 Armstrong World Industries, Inc. Couche absorbante d'humidité pour revêtements de surfaces décoratives
WO2006117049A1 (fr) * 2005-05-03 2006-11-09 Schaeffler Kg Dispositif de reglage d'arbre a cames

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1468843A2 (fr) * 2003-04-17 2004-10-20 Armstrong World Industries, Inc. Couche absorbante d'humidité pour revêtements de surfaces décoratives
EP1468843A3 (fr) * 2003-04-17 2005-07-06 Armstrong World Industries, Inc. Couche absorbante d'humidité pour revêtements de surfaces décoratives
US7390554B2 (en) 2003-04-17 2008-06-24 Awi Licensing Company Moisture-sink layer, composition and multi-layered article
WO2006117049A1 (fr) * 2005-05-03 2006-11-09 Schaeffler Kg Dispositif de reglage d'arbre a cames
US7578274B2 (en) 2005-05-03 2009-08-25 Schaeffler Kg Camshaft adjuster
KR100940476B1 (ko) * 2005-05-03 2010-02-04 쉐플러 카게 캠샤프트 조절 장치

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