Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
  • C09J133/04—Homopolymers or copolymers of esters
  • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
  • C09J133/10—Homopolymers or copolymers of methacrylic acid esters
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K7/00—Use of ingredients characterised by shape
  • C08K7/22—Expanded, porous or hollow particles
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
  • C09J11/02—Non-macromolecular additives
  • C09J11/04—Non-macromolecular additives inorganic
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
  • C09J11/08—Macromolecular additives
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
  • C09J133/04—Homopolymers or copolymers of esters

Definitions

• the present invention relates to an adhesive composition as well as its use for applying a flexible surface coating to a substrate and a corresponding bonding process.
• the substrate to be covered can be a floor, a wall or a ceiling, in particular a floor. It may be a raw substrate, for example a cement substrate or a substrate formed from wood panels, or a substrate which has been the subject of a finishing treatment, for example a screed or a leveling compound. .
• Soft surface coatings correspond to polymer coatings, such as PVC type coatings (homogeneous PVC, heterogeneous PVC and LVT) and carpets. Rigid surface coverings are particularly suitable for tiles and parquet floors.
• adhesive compositions are applied between the substrate to be covered and the surface coating.
• Different compositions are generally applied depending on the type of surface coating used.
• a flexible surface coating such as a polymer coating or a carpet
• Various adhesive compositions are currently available. Although these compositions can be adapted to the application of a flexible surface coating to the substrate and exhibit satisfactory mechanical properties, their use can be restrictive. These adhesive compositions can be difficult to apply, which requires mastering the installation technique and being properly trained.
• These adhesive compositions may also require the application of a large amount by weight and volume of composition per square meter, which increases the cost per square meter and / or requires a large storage capacity.
• Adhesive compositions for various applications, are already known. Compositions are for example disclosed in the following documents: DE 102008013020 A1, WO 2002/044255 A1 and KR 100830707 B1. However, there is still a need to provide an adhesive composition, in particular for the laying of a flexible surface coating on a substrate, the application of which is facilitated, while maintaining good mechanical cohesive properties.
• the invention relates firstly to an adhesive composition, for the application of a flexible surface coating to a substrate, comprising, relative to the total weight of the adhesive composition:
• At least one second light load having an apparent density greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 ; preferably from 0.15 to 0.70 g / cm 3 ; very preferably from 0.20 to 0.50 g / cm 3 ;
• the composition comprises from 15 to 35%; preferably from 20 to 30%; by weight of dry matter, relative to the total weight of the adhesive composition, of a polymeric composition comprising at least one copolymer or a mixture of two polymers comprising at least one (meth) acrylate or (meth) acrylic monomer.
• the polymeric composition comprises from 35 to 70%; preferably from 45 to 65%; very preferably from 50 to 63%; even more preferably from 58 to 62%, by weight of a copolymer or a mixture of at least two polymers comprising at least one (meth) acrylate or (meth) acrylic monomer, relative to the total weight of the polymeric composition.
• the lightweight fillers are hollow, non-porous, water dispersible microspheres having an average particle size (D50) of 1 to 100 ⁇ m; preferably from 25 to 70 ⁇ m.
• D50 average particle size
• the light fillers having a bulk density less than or equal to 0.1 g / cm 3 are hollow microspheres obtained from a thermoplastic material; preferably from polymers derived from ethylenic hydrocarbons.
• the second light fillers having a bulk density greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 , are hollow microspheres obtained from silica glass.
• the tackifying resin is chosen from rosins of natural or modified origin, and their derivatives which are hydrogenated, dimerized, polymerized or esterified with mono-alcohols or polyols.
• the carbonate filler has a bulk density greater than 0.95 g / cm 3 ; preferably from 1.1 to 1.9 g / cm 3; very preferably from 1.3 to 1.7 g / cm 3 .
• the carbonate filler is chosen from carbonates of alkali or alkaline earth metals; preferably from calcium carbonate and magnesium carbonate; very preferably, the carbonate filler is calcium carbonate.
• the composition comprises a dry matter mass ratio between the light fillers and the total fillers of 1: 100 to 15: 100; preferably from 1: 100 to 10: 100.
• the composition comprises a thickening agent, a plasticizer, a solvent, a pigment, a moisture absorber, a UV stabilizer, a dispersing agent, a molecular sieve, an antifoam agent, a fluorescent material, a UV stabilizer. biocide and mixtures thereof.
• the composition has a viscosity of 10,000 to 45,000 mP.s; preferably from 20,000 to 35,000 MPa.s.
• the invention relates secondly to a method of applying a flexible surface coating to a substrate comprising the following steps:
• the invention relates to the use of the adhesive composition described above, for applying a flexible surface coating to a substrate; preferably for applying to a floor a flexible surface coating chosen from polymer coatings or carpets.
• the present invention overcomes the drawbacks of the state of the art. It more particularly provides an adhesive composition having satisfactory adhesion performance, stability over time and mechanical properties of cohesion. The application of this composition is also facilitated. In addition, the application yield of this composition is improved, which makes it possible to reduce its cost price per square meter, compared to known adhesive compositions. Finally, the transport, delivery and handling of the adhesive composition on construction sites, compared to known adhesive compositions, are facilitated.
• an adhesive composition according to the invention in particular in that it comprises at least one carbonate filler, at least one light filler having an apparent density of less than or equal to 0.1 g / cm 3 and optionally at least one second light filler having a bulk density greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 - was particularly satisfactory for allowing the adhesion of a coating of flexible surface on a substrate, and that it had the advantages set out above.
• the inventors have surprisingly demonstrated that the incorporation of specific light fillers as a partial replacement for conventional fillers made it possible to facilitate their application, to improve their application efficiency, without reducing its adhesion performance. , its stability over time and its mechanical properties of cohesion.
• bulk density is meant the bulk density measured by conventional methods well known to those skilled in the art, for example by weighing a determined volume as described below.
• the apparent density is defined by the ratio between the mass of the material and the apparent volume of all the grains. The apparent density is expressed in g / cm 3 .
• light load is understood to mean a load whose apparent density is less than or equal to 0.95 g / cm 3 .
• average particle size including fillers or hollow microspheres
• D50 or Dv50 the median diameter which corresponds to the diameter such that 50% of the particles by volume have a size expressed in micrometers and determined according to standard NF ISO 13320-1 (1999 ) by laser diffraction on a MALVERN type device.
• sphere or “spherical”, including for fillers or hollow microspheres, is meant a particle having an aspect ratio close to 1, ranging from 0.5 to 1.5 for example, such as particles of shape. oblong, ovoid, ellipsoidal, and preferably equal to 1, ie having a spherical shape.
• Such an aspect ratio is defined as the ratio between the maximum distance between two points on the surface of the particle, along a main direction, over the minimum distance between two points on the surface of the particle, along a direction substantially perpendicular to the main direction.
• the present invention relates to an adhesive composition, for the application (bonding) of a flexible surface coating to a substrate, comprising, relative to the total weight of the adhesive composition:
• the copolymers or mixtures of polymers used in the invention to form the polymeric composition can be in the form of an aqueous dispersion, or of an aqueous emulsion, or of a redispersible powder which, after addition of water, forms an aqueous solution; preferably in the form of an aqueous dispersion.
• the form in which the copolymer or mixture of polymers is used depends on its solubility in water.
• incorporation of these polymeric compositions is advantageous in that it makes it possible to further increase the cohesion of the adhesive composition and thus to further improve its mechanical performance.
• the adhesive composition comprises 10 to 40%; preferably from 15 to 35%; very preferably from 20 to 30%; by weight of dry matter, relative to the total weight of the adhesive composition, of a polymeric composition comprising at least one copolymer or a mixture of two polymers comprising at least one (meth) acrylate or (meth) acrylic monomer.
• copolymer comprising at least one (meth) acrylate or (meth) acrylic monomer is meant a polymer formed from at least two monomers, including at least one (meth) acrylate or (meth) acrylic monomer.
• mixture of polymers comprising at least one (meth) acrylate or (meth) acrylic monomer means a mixture comprising at least two polymers, at least one polymer of which is formed from (meth) acrylate or (meth) acrylic monomers .
• the (meth) acrylate or (meth) acrylic monomer can be chosen from acrylic acid, methacrylic acid, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, l butyl acrylate, butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, n-hexyl acrylate, n-hexyl methacrylate, ethylhexyl acrylate, ethylhexyl methacrylate , n-heptyl acrylate, n-heptyl methacrylate, stearyl acrylate, stearyl methacrylate, glycidyl methacrylate, acrylamide, methacrylamide, hydroxyethyl acrylate, methacrylate hydroxyethyl, allyl methacrylate, cyclohexyl acrylate, cyclohexy
• the copolymer or the mixture of polymers comprising at least one (meth) acrylate or (meth) acrylic monomer can comprise at least one other monomer chosen from vinyl acetate, vinyl ethylene, styrene, vinyl chloride, vinyl versatate, vinyl laurate or combinations thereof.
• the copolymer or mixture of at least two polymers comprising at least one (meth) acrylate or (meth) acrylic monomer can have a glass transition temperature (Tg) of -50 to 0 ° C; preferably from -40 to -10 ° C; very preferably from -37 to -15 ° C.
• Tg glass transition temperature
• the glass transition temperature can be measured by DSC (for "Differential Scanning Calorimetry" in English or "differential scanning calorimetry” in French ").
• the adhesive composition can also comprise at least one other polymer chosen from polyesters, polyurethanes or their mixtures.
• the adhesive composition can comprise from 0 to 15%; preferably from 0 to 10%; very preferably from 0 to 5%; in weight of this other polymer chosen from polyesters, polyurethanes or their mixture relative to the total weight of the adhesive composition.
• the polymeric composition may further comprise at least one other polymer being a copolymer of vinyl acetate and ethylene.
• This copolymer of vinyl acetate and ethylene may be present in the polymeric composition or may be added separately to the adhesive composition.
• the adhesive composition can comprise from 0 to 15%; preferably from 0 to 10%; very preferably from 0 to 5%; of a copolymer of vinyl acetate and ethylene based on the total weight of the adhesive composition.
• the polymeric composition, for incorporation into the adhesive composition can comprise from 35 to 70%; preferably from 45 to 65%; very preferably from 50 to 63%; even more preferably from 58 to 62%, by weight of a copolymer or a mixture of at least two polymers comprising at least one (meth) acrylate or (meth) acrylic monomer, relative to the total weight of the polymeric composition (before mixed).
• polymeric compositions which can be used for the preparation of the adhesive composition according to the invention, are commercially available, in particular the following polymeric compositions:
• - PLEXTOL® D 306 (available from Synthomer): aqueous dispersion of pure acrylic resin based on n-butylacrylate (98%) and styrene (2%) having a glass transition temperature of -30 ° C .;
• - VINNAPAS® EAF 68 (available from Wacker): aqueous dispersion of acrylic resin based on vinyl acetate, ethylene and acrylate having a glass transition temperature of -35 ° C.
• composition according to the invention comprises from 0.075 to 1.5%, preferably from 0.15 to 1.2%, very preferably from 0.15 to 0.75%, by weight of dry matter of a light filler having a bulk density (dry matter) less than or equal to 0.1 g / cm 3 .
• the composition can comprise from 0.075 to 0.15%, or from 0.15 to 0.3%; or from 0.3 to 0.45%; or from 0.45 to 0.6%; or from 0.6 to 0.75%; or from 0.75 to 0.9%; or from 0.9 to 1.05%; or from 1.05 to 1.2%; or from 1.2 to 1.35%; or from 1.35 to 1.5% by weight of dry matter of at least one light filler having a bulk density (dry matter) less than or equal to 0.1 g / cm 3 .
• the composition can also comprise, preferably from 0 to 5%, very preferably from 0 to 4%, more preferably from 0 to 3%, of at least one second light filler having an apparent density.
• the composition can comprise from 0 to 0.25%, or from 0.25 to 0.5%; or from 0.5 to 0.75%; or from 0.75 to 1%; or from 1 to 1.25%; or from 1.25 to 1.5%; or from 1.5 to 1.75%; or from 1.75 to 2%; or from 2 to 2.25%; or from 2.25 to 2.5%; or from 2.5 to 2.75%; or from 2.75 to 3%; or from 3 to 3.25%; or from 3.25 to 3.5%; or from 3.5 to 3.75%; or from 3.75 to 4%; or from 4 to 4.25%; or from 4.25 to 4.5%; or from 4.5 to 4.75%; or from 4.75 to 5% by weight of dry matter of at least one second light filler having a bulk density (dry matter) greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 .
• the composition is devoid of a light filler other than the light filler having a bulk density (dry matter) less than or equal to 0.1 g / cm 3 , and it is in particular devoid of a filler. light having a bulk density (dry matter) greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 .
• the composition comprises, as light fillers, at least one light filler having a bulk density (dry matter) of less than or equal to 0.1 g / cm 3 and at least one light filler having a bulk density (dry matter) of 0.1 g / cm 3 or more.
• the composition can then comprise from 0.1 to 5%, very preferably from 0.5 to 4%, more preferably from 0.5 to 3%, of at least one second light filler having a mass apparent volume (dry matter) greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 .
• At least one light filler having a bulk density less than or equal to 0.1 g / cm 3 , and optionally at least one second light filler having a bulk density greater than 0.1 g / cm 3 and less than or equal to 0.95 g / cm 3 , to the adhesive composition - in particular in combination with a polymeric composition, at least one carbonate filler and at least one tackifying resin - is particularly advantageous in that the density of the total filler of the composition, and thus its weight, are reduced without, however, and surprisingly, degrading the cohesion of the adhesive composition, its stability and its mechanical properties.
• the inventors have surprisingly demonstrated that the addition of these light fillers makes it possible to facilitate the application of the adhesive composition to the substrate to be covered and / or the surface coating to be applied. Finally, the inventors have surprisingly demonstrated that the addition of these light fillers also made it possible to improve the application efficiency.
• the light fillers are preferably dispersible in water.
• the light fillers are preferably non-porous. This results in the fact that they do not absorb liquids, such as water present in the adhesive composition according to the invention.
• the light fillers are preferably hollow microspheres.
• the hollow microspheres preferably comprise an inert gas or an inert gas mixture such as air or isobutane, at a gas pressure ranging from 0.3 ⁇ 10 5 to 7 ⁇ 10 5 at 23 ° C. The gas is trapped during the manufacturing process of the hollow microspheres.
• the hollow microspheres can have a single internal cavity (single cell hollow microspheres) or alternatively several internal cavities (polycellular hollow microspheres such as perlite).
• the hollow microspheres preferably have an external wall, delimiting the interior of the internal cavity and the external surface of the hollow microsphere, of substantially homogeneous thickness and sufficient to withstand the shocks associated with the handling of these compounds during the preparation of the mixture. adhesive composition, and seal against the gas contained in the microsphere.
• Lightweight fillers particularly hollow microspheres, can have an average particle size (D50) of 1 to 100 ⁇ m; preferably from 25 to 70 ⁇ m.
• D50 average particle size
• the light fillers are hollow, non-porous, water-dispersible microspheres having an average particle size (D50) of 1 to 100 ⁇ m; preferably from 25 to 70 ⁇ m.
• D50 average particle size
• Hollow microspheres can be prepared by well known manufacturing methods.
• the hollow polymer microspheres can in particular be prepared by a process as described in application US Pat. No. 3,615,972.
• the first light filler has a bulk density less than or equal to 0.1 g / cm 3 ; preferably from 0.01 to 0.1 g / cm 3 ; very preferably from 0.01 to 0.07 g / cm 3 .
• the first light filler may have a bulk density of 0.01 to 0.02 g / cm 3 ; or from 0.02 to 0.03 g / cm 3 ; or from 0.03 to 0.04 g / cm 3 ; or from 0.04 to 0.05 g / cm 3 ; or from 0.06 to 0.07 g / cm 3 ; or from 0.07 to 0.08 g / cm 3 ; or from 0.08 to 0.09 g / cm 3 ; or from 0.09 to 0.1 g / cm 3 .
• the first light filler can be hollow microspheres having a bulk density of 0.1 g / cm 3 ; preferably from 0.01 to 0.1 g / cm 3 ; very preferably from 0.01 to 0.07 g / cm 3 .
• These hollow microspheres can be obtained from a thermoplastic material; preferably from polymers derived from ethylenic hydrocarbons (for example polyethylene, polystyrene, vinyl chloride or their mixtures). These hollow microspheres can be prepared in the form of an aqueous dispersion.
• the first light filler can be incorporated as an aqueous dispersion.
• the formulation in the form of an aqueous dispersion makes it possible to facilitate the handling of these fillers.
• hollow microspheres obtained from a thermoplastic material are commercially available under the name Expancel® by Nouryon in the form of aqueous dispersions (15% by weight of hollow microspheres, bulk density [dry matter] of 0.036 g / cm 3 ).
• the adhesive composition may comprise from 0.5 to 10 %, preferably from 1 to 8%, very preferably from 1 to 5%, by weight of an aqueous dispersion of light fillers having an apparent density of less than or equal to 0.1 g / cm 3 , relative to the total weight of the adhesive composition.
• the second light load if present, has a bulk density greater than 0.1 and less than or equal to 0.95 g / cm 3 ; preferably from 0.15 to 0.70 g / cm 3 ; very preferably from 0.20 to 0.50 g / cm 3 .
• the bulk density of the second light filler may be greater than 0.1 and less than or equal to 0.2 g / cm 3 ; or from 0.2 to 0.3 g / cm 3 ; or from 0.3 to 0.4 g / cm 3 ; or 0.4 to 0.5 g / cm 3 ; or from 0.5 to 0.6 g / cm 3 ; or from 0.6 to 0.7 g / cm 3 ; or from 0.7 to 0.8 g / cm 3 ; or from 0.8 to 0.9 g / cm 3 ; or from 0.9 to 0.95 g / cm 3 .
• the second light filler if present, can be chosen from expanded perlite, expanded vermiculite, silica aerogels, expanded polystyrene, cenospheres (fillites), hollow alumina balls, expanded clays, pumice, hollow glass balls or expanded glass granules, silicate foam grains, rhyolite or mixtures thereof; preferably among the expanded perlites, the hollow glass beads or their mixtures; very preferably among the hollow glass beads.
• the second light filler if present, can be chosen from hollow microspheres having a bulk density greater than 0.1 and less than or equal to 0.95 g / cm 3 ; preferably from 0.15 to 0.70 g / cm 3 ; very preferably from 0.20 to 0.50 g / cm 3 .
• the hollow microspheres can be expandable hollow microspheres, non-expandable hollow microspheres, or mixtures thereof. These hollow microspheres can be obtained from silica glass; preferably, these hollow microspheres can comprise silicon oxide, aluminum oxide, potassium oxide, sodium oxide, or mixtures thereof.
• hollow microspheres obtained from silica glass are commercially available under the name Sil Cell® by Silbrico.
• the adhesive composition preferably comprises from 0.075 to 6.5%; very preferably from 0.15 to 5.2%; more preferably from 0.15 to 3.75% by weight of dry matter of total light fillers relative to the total weight of the composition.
• total light loads is meant the light loads having an apparent density less than or equal to 0.1 g / cm 3 and, if present, the second light loads.
• this composition can comprise a mass ratio of dry matter between the first light load and the total light loads (first and second light loads) of 5: 100 to 40: 100, preferably of 5: 100 to 30: 100.
• the adhesive composition may comprise a ratio between the first light load and the total light loads of 5: 100 to 10: 100; or from 10: 100 to 15: 100; or from 15: 100 to 20: 100; or from 20: 100 to 25: 100; or from 25: 100 to 30: 100; or from 30: 100 to 35: 100; or from 35: 100 to 40: 100.
• the adhesive composition according to the invention also comprises from 6 to 30% by weight of at least one tackifying resin relative to the total weight of the adhesive composition.
• the tackifying resin makes it possible to improve the trapping nature of the adhesive. This helps keep materials together better as soon as they are assembled so they don't slip or move relative to each other. Thus, the film of glue remains continuous and motionless during the setting time and the glue does not open.
• the resin can be chosen from:
• rosins of natural or modified origin and their derivatives hydrogenated, dimerized, polymerized or esterified with monoalcohols or polyols (such as the Sylvalite® RE 100 resin which is an ester of rosin and pentaerethritol available from the company Arizona Chemical and molar mass around 1700 Da);
• the resin is chosen from rosins of natural or modified origin, and their derivatives hydrogenated, dimerized, polymerized or esterified by monoalcohols or polyols (such as the Sylvalite® RE 100 resin which is an ester rosin and pentaerethritol available from Arizona Chemical and with a molar mass of approximately 1700 Da).
• the adhesive composition preferably comprises from 6 to 30%; very preferably from 8 to 20%; more preferably from 10 to 14% by weight of tackifying resin relative to the total weight of the composition.
• this content can be 6 to 8%; or from 8 to 10%; or from 10 to 14%; or from 14 to 20%; or from 20 to 25%; or from 25 to 30% by weight of tackifying resin relative to the total weight of the adhesive composition.
• the adhesive composition according to the invention also comprises from 15 to 60% by weight of a carbonate filler relative to the total weight of the adhesive composition.
• a carbonate filler relative to the total weight of the adhesive composition.
• the incorporation of carbonate fillers is advantageous in that they exhibit a low oil absorption (approximately 12 g / 100 g), which avoids the problems of stability of the adhesive composition.
• the carbonate filler differs in particular from the light fillers described above in that it has an apparent density greater than 0.95 g / cm 3 ; preferably from 1.1 to 1.9 g / cm 3; very preferably from 1.3 to 1.7 g / cm 3 .
• the carbonate filler can be chosen from carbonates of alkali metals or alkaline earth metals; preferably from calcium carbonate and magnesium carbonate; very preferably calcium carbonate.
• the adhesive composition preferably comprises 25 to 50%; very preferably from 35 to 45%, by weight of carbonate filler relative to the total weight of the composition.
• the adhesive composition can comprise from 15 to 20%; or from 20 to 25%; or from 25 to 30%; or from 30 to 35%; or from 35 to 40%; or from 40 to 45%; or from 45 to 50%; or from 50 to 55%; or from 55 to 60% by weight of carbonate filler relative to the total weight of the adhesive composition.
• the average carbonate filler particle size can be 1 to 100 ⁇ m; preferably from 1 to 50 ⁇ m; very preferably from 3 to 20 ⁇ m.
• the adhesive composition is preferably free from other fillers than the carbonate fillers and the light fillers described above.
• the adhesive composition is devoid of fillers having a bulk density greater than 0.95 g / cm 3 other than carbonate fillers.
• the adhesive composition is preferably devoid of fillers having a bulk density greater than 0.95 g / cm 3 chosen from sand, alumina, hydrated alumina, magnesium silicate, aluminum silicate, silicate of sodium, potassium silicate, mica, silica and mixtures thereof.
• the adhesive composition can comprise a mass ratio between the light fillers and the total fillers (including the light fillers and the carbonate fillers) of 1: 100 to 15: 100; preferably from 1: 100 to 10: 100.
• the adhesive composition can further comprise water.
• the water can be provided by the polymeric composition, by any other aqueous dispersion (for example the aqueous dispersion of the light filler having an apparent density of less than or equal to 0.1 g / cm 3 ) or by optional addition of water. .
• the addition of water can make it possible to obtain the desired concentration of active materials.
• the composition can comprise from 15 to 40%; preferably from 20 to 35%; very preferably from 20 to 30% by weight of water relative to the total weight of the adhesive composition.
• the adhesive composition can comprise from 15 to 20%; or from 20 to 25%; or from 25 to 30%; or from 30 to 35%; or from 35 to 40% by weight of water relative to the total weight of the adhesive composition.
• the adhesive composition according to the invention can further comprise at least one thickening agent.
• the thickener can help keep loads in suspension.
• the thickening agent can be chosen from associative or associative thickeners or mixtures thereof.
• the adhesive composition can comprise from 0.1 to 1%; preferably from 0.1 to 0.5% by weight of the thickening agent relative to the total weight of the adhesive composition.
• the composition can also comprise a base.
• the base can improve the effectiveness of the thickener.
• the base can be triethanolamine.
• the adhesive composition according to the invention can comprise from 0.2 to 2%; preferably from 0.5 to 1.5% by weight of base relative to the weight of the thickening agent.
• the adhesive composition according to the invention can further comprise a plasticizer.
• plasticizer As an example of a plasticizer that can be used, there may be mentioned any plasticizer usually used in the field of adhesives, sealants and / or surface coatings, such as, for example, phthalates, benzoates, esters. trimethylolpropane, trimethylolpropane esters, trimethylolmethane esters, glycerol esters, pentaerythritol esters, naphthenic mineral oils, adipates, cyclohexyldicarboxylates, paraffinic oils, natural oils (optionally epoxidized), polypropylenes, polybutylenes, hydrogenated polyisoprenes, and mixtures thereof.
• phthalates benzoates
• esters trimethylolpropane, trimethylolpropane esters, trimethylolmethane esters, glycerol esters, pentaerythritol esters, naphthenic mineral oils, adipates, cyclohexyldicar
• phthalates mention may for example be made of diisononyl phthalate, diisobutyl phthalate, dioctyl phthalate, dicyclohexyl phthalate, diisooctyl phthalate, diisododecyl phthalate, dibenzyl phthalate, diisodecy phthalate (for example sold by BASF name PALATINOL TM DIDP), or butylbenzyl phthalate.
• diisononyl phthalate diisobutyl phthalate, dioctyl phthalate, dicyclohexyl phthalate, diisooctyl phthalate, diisododecyl phthalate, dibenzyl phthalate, diisodecy phthalate (for example sold by BASF name PALATINOL TM DIDP), or butylbenzyl phthalate.
• benzoates there may be mentioned, for example: neopentylglycol dibenzoate (for example available under the name UNIPLEX ® 512 from LANXESS), dipropylene glycol dibenzoate (for example available under the name BENZOFLEX ® 9-88SG from EASTMAN), a mixture of diethylene glycol dibenzoate and of dipropylene glycol dibenzoate (for example available under the name K-FLEX ® 850 S from KALAMA CFIEMICAL), or a mixture of diethylene glycol dibenzoate, of dipropylene glycol dibenzoate and of triethylene glycol dibenzoate (for example available under the name BENZOFLEX ® 2088 from EASTMAN).
• neopentylglycol dibenzoate for example available under the name UNIPLEX ® 512 from LANXESS
• dipropylene glycol dibenzoate for example available under the name BENZOFLEX ® 9-88
• pentaerythritol esters mention may for example be made of pentaerythritol tetravalerate (for example available under the name PEVALENTM from the company PERSTORP).
• cyclohexanedicarboxylates mention may be made, for example, of diisononyl 1, 2-cyclohexanedicarboxylate (for example available under the name HEXAMOLL DINCH® from BASF).
• plasticizers can be triethylene glycol-2-ethylhexanoate) (Oxsoft 3G8) and butyl di glycol acetate (ABDG).
• the adhesive composition can comprise from 0.1 to 10%; preferably from 0.5 to 5% by weight of plasticizer relative to the total weight of the composition.
• the adhesive composition according to the invention can further comprise at least one additive; preferably an additive chosen from solvents, pigments, moisture absorbers, UV stabilizers (or antioxidants), dispersing agents, molecular sieves, anti-foaming agents, fluorescent materials, biocides, an additional polymer other as the polymers described above and their mixtures.
• an additive chosen from solvents, pigments, moisture absorbers, UV stabilizers (or antioxidants), dispersing agents, molecular sieves, anti-foaming agents, fluorescent materials, biocides, an additional polymer other as the polymers described above and their mixtures.
• the composition can comprise from 0.01 to 10% by weight of additives relative to the total weight of the composition.
• the solvent can be a volatile solvent at a temperature of 23 ° C .; very preferably an alcoholic solvent volatile at 23 ° C; more preferably a solvent chosen from ethanol, isopropanol or their mixtures.
• the volatile solvent makes it possible in particular to reduce the viscosity of the adhesive composition and to facilitate its application.
• the volatile nature of the solvent allows in particular the adhesive grooves, obtained after hardening of the adhesive composition, to no longer contain solvent. Thus, for example, the solvent has no negative influence on the hardness of the seal.
• the pigments can be organic or inorganic pigments.
• the pigment is titanium dioxide (T1O2), in particular KRONOS® 2059 sold by the company KRONOS.
• the moisture absorber can be chosen from hydrolyzable, non-polymeric alkoxysilane derivatives with a molecular mass of less than 500 g / mol; preferably from trimethoxysilane and triethoxysilane derivatives. Such an agent can typically extend the shelf life of the composition during storage and transportation prior to use.
• UV stabilizers are typically introduced to protect the composition from degradation resulting from a reaction with oxygen which may be formed by the action of heat or light. These compounds can include primary antioxidants which scavenge free radicals.
• Primary antioxidants can be used alone or in combination with other secondary antioxidants or UV stabilizers. Mention may be made, for example, of IRGANOX® 1010, IRGANOX® B561, IRGANOX® 245, IRGAFOS® 168, TINUVIN® 328 or TINUVINTM 770 sold by BASF.
• the additional polymer can be a copolymer comprising at least one (meth) acrylate or (meth) acrylic monomer and at least one styrene monomer, and having a glass transition temperature (Tg) of 0 to 40 ° C; preferably from 10 to 30 ° C.
• Tg glass transition temperature
• the bulk density of the fillers and the composition is described above.
• the apparent density is defined by the ratio between the mass of the material and the apparent volume of all the grains.
• the apparent density is expressed in g / cm 3 .
• Density is measured from fillers / composition in powder form.
• the fillers in powder form are dry extracts.
• dry extract is meant a material comprising a residual humidity of substantially 0%.
• the apparent density can be measured according to the following procedure:
• the hollow bottom of the funnel is closed with a slide, the slide ensuring the opening and closing of the hollow bottom of the funnel;
• the funnel is completely filled with the load (s), homogenized, and the slide is quickly removed, thus allowing the load (s) to flow into the bucket;
• the cup is placed on an analytical balance at 0.1 g and the cup and its contents, mass M1, are weighed with a precision of 0.1 g.
• the adhesive composition comprises a light filler having a bulk density of 0.01 to 0.1 g / cm 3 , optionally a second light filler having a bulk density of 0.15 to 0.70 g / cm 3 , and a carbonate filler having a bulk density of 1.1 to 1.9 g / cm 3.
• the adhesive composition comprises a light filler having a bulk density of 0.01 to 0.07 g / cm 3 , optionally a second light filler having a bulk density of 0.20 to 0.50 g. / cm 3 , and a carbonate filler having a bulk density of 1.3 to 1.7 g / cm 3 ”.
• the adhesive composition according to the invention preferably has an apparent density (dry matter) of 0.7 to 1.1 g / cm 3 ; preferably from 0.8 to 1.1 g / cm 3 ; very preferably from 0.9 to 1.1 g / cm 3 .
• the bulk density of the adhesive composition can be 0.7 to 0.8 g / cm 3 ; or from 0.8 to 0.9 g / cm 3 ; or 0.9 to 1.0 g / cm 3 ; or from 0.9 to 1.1 g / cm 3 .
• Viscosity The adhesive composition according to the invention can have a viscosity of 10,000 mPa.s to 45,000 mP.s; preferably from 20,000 to 35,000 MPa.s.
• the viscosity of the adhesive composition can be 10,000 mPa.s to 15,000 mP.s; or from 15,000 mPa.s to 20,000 mP.s; or from 20,000 mPa.s to 25,000 mP.s; or from
• the adhesive composition according to the invention can be a one-component composition, that is to say an adhesive composition according to which all the compounds are packaged in the same compartment.
• the composition is preferably ready for use and the user (private individual or professional) can apply it directly to the substrate to be covered and / or the flexible surface coating to be applied, without having to perform any mixing. prior.
• the adhesive composition can be a two-component composition, that is to say an adhesive composition according to which the components are packaged in at least two separate compartments.
• the two-component composition can comprise a component A and a component B, the two components being mixed before the use and the application of the adhesive composition on a substrate and / or a flexible surface coating, for example.
• the materials described above can be distributed in component A and / or in component B of the two-component composition.
• Component A can for example comprise the polymeric composition, the light fillers and the carbonate fillers.
• Component B can include the tackifying resin as well as optional additives.
• the present invention relates to a method of applying a flexible surface coating to a substrate, said method comprising the following steps:
• the adhesive composition according to the invention is advantageous in that it allows satisfactory adhesion with a lower application rate of at least minus 10%; preferably at least 15%; compared to a standard adhesive composition applied generally in an amount of about 300 g / m 2 , without compromising peel time, open time and peel performance.
• the gumming time is the incompressible period of time between the application of the adhesive composition to the substrate and the application of the flexible surface coating to the adhesive layer.
• the exfoliation time is preferably 30 min or less at room temperature (20 ° C) and 50% humidity.
• open time is meant the period of time during which there is a transfer of adhesive between the adhesive layer and the flexible surface coating.
• the open time is preferably 40 to 50 min at room temperature (20 ° C) and 50% humidity.
• a quantity of adhesive composition of less than or equal to 290 g / m 2 is applied; preferably less than or equal to 280 g / m 2 ; very preferably less than or equal to 270 g / m 2 .
• an effective application of adhesive composition can be obtained by using a type 1A2 spatula from the TKB standard.
• the adhesive composition layer can be applied continuously or discontinuously to the substrate and / or the flexible surface coating.
• the layer of adhesive composition is preferably applied to the substrate.
• the substrate is generally not primed before application of the adhesive composition layer.
• a tile undergoes a simple stripping before application of the layer of adhesive composition.
• the substrates are those cited in the DTU 53.1 standard.
• the composition can be applied at a temperature ranging from 5 ° C to 40 ° C and preferably between 15 ° C and 30 ° C.
• the flexible surface coating can be applied after observing a scrub time of 30 min or less, for example 10 to 30 min, depending on environmental conditions.
• the exfoliation time corresponds to the period during which the applied adhesive composition thickens and increases its adhesion power.
• the flexible surface coatings used in the invention are those which meet the conditions laid down in standards DTU 53.1 and 53.2.
• the flexible surface coverings can be chosen from knitted, tufted, woven and flocked carpets, in strips or in tiles, in particular those which meet the requirements of NF EN 1307, as well as needle punched floor coverings in strips or tiles, in particular those which meet the requirements of NF EN 1470 and prEN 13297. Mention may be made of classic wool or synthetic carpets, and natural fiber coverings.
• the flexible surface coverings can also be polymer floor coverings, for example polyvinyl chloride (PVC) or the like.
• PVC polyvinyl chloride
• the following examples may be cited (see standard DTU 53.2): homogeneous and heterogeneous floor coverings based on polyvinyl chloride; polyvinyl chloride based floor coverings on a jute or polyester backing or on a polyester backing with a polyvinyl chloride backing; polyvinyl chloride-based foam floor coverings; polyvinyl chloride-based floor coverings with a cork-based backing; expanded polyvinyl chloride based floor coverings; semi-flexible tiles based on polyvinyl chloride; cork chipboard tiles with polyvinyl chloride based wear layer; or flexible coatings based on polymers of renewable origin (of agricultural origin in particular) such as PLA (polylactic acid) or polyolefin polymers (the olefin being obtained in particular from bio-ethanol).
• PLA polylactic acid
• a large number of different coatings can therefore be used in the invention, for example the following coatings: homogeneous PVC (tiles or strips); multilayer PVC (tiles or strips); PVC on cork; polyolefins; linoleum in strips; rubbers in tiles or strips; Expanded Reliefs vinyls (V.E.R.); semi-flexible slabs; needles with or without backing; carpets on foam (latex); carpets with a non-woven backing; synthetic backrest carpets (Action Back type); or coconut, sisal and seagrass with latex backing.
• the coating in the best conditions and to avoid disorders, it is recommended to refer to the installation guides of the manufacturers of the various coating invoices.
• the substrate to be covered can correspond to any traditional substrate capable of being covered by a flexible surface coating, and include in particular the materials chosen from among concrete, mortar, brick, glass, metal. , wood, plastic or their combinations.
• the preparation of the supports and the conditions of implementation must be carried out in accordance with the professional rules in the countries in force.
• the present invention relates to a process for manufacturing the adhesive composition by simply mixing the materials, namely the polymeric composition, the light fillers, the carbonate fillers and the tackifying resin and all materials. additional.
• the adhesive composition can be manufactured by premixing the polymeric composition, the carbonate fillers, the tackifying resin and any additional materials, then adding the light fillers to the premix obtained.
• the adhesive composition is stored protected from light and air at a temperature of 5 to 40 ° C; preferably from 10 to 30 ° C.
• the present invention relates to the association of a flexible surface coating as described above with the adhesive composition as described above. Indeed, it may be judicious to combine, within a kit intended for users (professionals or individuals), a flexible surface coating and an adhesive composition in quantities suitable for the surface to be coated.
• the present invention relates to the use of the adhesive composition for applying a flexible surface coating to a substrate as described above; preferably for applying to a floor a flexible surface coating chosen from polymer coatings or carpets.
• the flexible surface coatings used in the invention are those which meet the conditions laid down in standards DTU 53.1 and 53.2.
• the flexible surface coverings can be chosen from knitted, tufted, woven and flocked carpets, in strips or in tiles, in particular those which meet the requirements of NF EN 1307, as well as needled floor coverings in strips or in tiles, in particular those which meet the requirements of NF EN 1470 and prEN 13297. Mention may be made of classic wool or synthetic carpets, and natural fiber coverings.
• compositions (A to E) were prepared with the following materials:
• Polymeric composition 1 Acrylic dispersion (60% dry matter) of an acrylic ester copolymer having a glass transition temperature of -22 ° C;
• Polymeric composition 2 Acrylic dispersion (50% dry matter) of an acrylic ester copolymer having a glass transition temperature of -22 ° C;
• thermoplastic microspheres Expancel® of Nouryon with a bulk density (dry matter) of about 0.036 g / m 3 and a D50 of 35 microns;
• Carbonate load 1 Carbonate with a D50 of 14 pm;
• Carbonate charge 2 Carbonate with a D50 of 5 pm.
• composition A reference
• compositions B to E invention
• compositions A to E were applied using a type 1A2 notched trowel on a cardboard support measuring 1200 mm x 800 mm and coated with a leveling compound. Conditions during application of the compositions were temperature (23 ⁇ 3) ° C and relative humidity (50 ⁇ 10)%. At the end of the application of each composition, the stopwatch was started.
• compositions B to E exhibit an improved application yield compared to composition A, in particular with a reduction in consumption (g / m 2 ) of at least 10%.
• compositions B to E also exhibit good ease of application, in particular D and E.
• these compositions retain satisfactory application and performance characteristics. .

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Adhesives Or Adhesive Processes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=72356196

Family Applications (2)

Family Applications Before (1)

Country Status (4)

Family Cites Families (6)

• 2020
  • 2020-06-18 FR FR2006351A patent/FR3111638B1/fr active Active
• 2021
  • 2021-03-16 EP EP21162894.6A patent/EP3926006B1/de active Active
  • 2021-06-17 US US18/001,893 patent/US20230295478A1/en active Pending
  • 2021-06-17 WO PCT/FR2021/051092 patent/WO2021255393A1/fr unknown
  • 2021-06-17 EP EP21740128.0A patent/EP4168486A1/de active Pending

Also Published As

Similar Documents

Legal Events