WO2020142232A1 - Gazon artificiel ayant un matériau de remplissage de gazon contenant un polymère de siloxane et compositions pour fabriquer un tel matériau de remplissage de gazon - Google Patents

Gazon artificiel ayant un matériau de remplissage de gazon contenant un polymère de siloxane et compositions pour fabriquer un tel matériau de remplissage de gazon Download PDF

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WO2020142232A1
WO2020142232A1 PCT/US2019/067365 US2019067365W WO2020142232A1 WO 2020142232 A1 WO2020142232 A1 WO 2020142232A1 US 2019067365 W US2019067365 W US 2019067365W WO 2020142232 A1 WO2020142232 A1 WO 2020142232A1
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composition
oil
polymer
artificial turf
styrene
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Eduardo Alvarez
Miguel Alberto de Jesus PRIETO
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Dow Global Technologies LLC
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Dow Global Technologies LLC
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes

Definitions

  • the field of this invention is infill for artificial turf and compositions useful in making such infill.
  • a common structure for this artificial turf particularly for sports fields, includes a sheet-like substrate with a plurality of filiform formations (i.e., synthetic grass blades or turf yam or turf blade of grass) extending from the substrate for simulating the grassy sward of natural turf and a particulate filling material, or infill, dispersed between the filiform formations so as to keep the filiform formations themselves in a substantially upright condition.
  • filiform formations i.e., synthetic grass blades or turf yam or turf blade of grass
  • the above synthetic-grass covering is characterized in that the particulate filling material (infill) is constituted by a substantially homogeneous mass of a granular material chosen in the group constituted by polyolefin-based materials and by vinyl polymer- based materials.
  • CN 105295284 discloses a turf blade of grass formed from a PP pipe compound comprising SEBS rubber, softening plasticizer, polyolefin elastomer, ethylene propylene diene rubber, acrylic resin, calcium carbonate, antioxidant, light stabilize and processing aids.
  • the processing aid is at least one of low molecule esters, polysiloxane-based, metal soap, the compound esters of stearic acid, amides.
  • a main concern of artificial turf is the ability of the pitch to withstand environmental and playing factors while maintaining its original performance and quality.
  • the infill granules are subjected to constant abrasion and degradation. This can lead to a loss of granulation and therefore shock absorption and dimensional stability over time.
  • a simulated grass structure comprising a substrate having a plurality of filiform formations extending from the substrate and having a particulate filling material (or infill) between the filiform formations wherein the particulate filling material comprises an elastomeric polymer, a siloxane polymer, at least one of an inorganic filler and a hard thermoplastic polymer.
  • the particulate filling material can further comprise an oil.
  • compositions useful in making artificial turf infill comprising an elastomeric polymer, a siloxane polymer, at least one of an inorganic filler and a hard thermoplastic polymer.
  • the composition and/or particulate filling material can further comprise an oil.
  • particulate filling materials comprising such composition.
  • compositions not including the siloxane polymer show improved abrasion resistance at similar hardness compared to compositions not including the siloxane polymer.
  • these compositions will be uniquely useful as turf infill.
  • composition refers to a mixture of materials which comprises the composition, as well as reaction products and decomposition products formed from the materials of the composition.
  • Polymer means a polymeric compound prepared by polymerizing monomers, whether of the same or a different type.
  • the generic term polymer thus embraces the term homopolymer (employed to refer to polymers prepared from only one type of monomer, with the understanding that trace amounts of impurities can be incorporated into the polymer structure), and the term interpolymer as defined hereinafter. Trace amounts of impurities (for example, catalyst residues) may be incorporated into and/or within the polymer.
  • a polymer may be a single polymer, a polymer blend or a polymer mixture, including mixtures of polymers that are formed in situ during polymerization.
  • interpolymer refers to polymers prepared by the polymerization of at least two different types of monomers.
  • the generic term interpolymer thus includes copolymers (employed to refer to polymers prepared from two different types of monomers), and polymers prepared from more than two different types of monomers.
  • olefin-based polymer or“polyolefin”, as used herein, refer to a polymer that comprises, in polymerized form, a majority amount of olefin monomer, for example ethylene or propylene (based on the weight of the polymer), and optionally may comprise one or more comonomers.
  • ethylene/a-olefm interpolymer refers to an interpolymer that comprises, in polymerized form, a majority amount (>50 mol %) of units derived from ethylene monomer, and the remaining units derived from one or more a-olefms.
  • Typical a-olefms used in forming ethylene/a-olefm interpolymers are C3-C10 alkenes.
  • ethylene/a-olefm copolymer or“ethylene/alpha-olefm” as used herein, refers to a copolymer that comprises, in polymerized form, a majority amount (>50 mol%) of ethylene monomer, and an a-olefm, as the only two monomer types.
  • a-olefm refers to an alkene having a double bond at the primary or alpha (a) position.
  • compositions disclosed herein as comprising may be compositions consisting essentially of or consisting of the components listed.
  • Polyethylene or“ethylene-based polymer” shall mean polymers comprising a majority amount (>50 mol %) of units which have been derived from ethylene monomer. This includes polyethylene homopolymers or copolymers (meaning units derived from two or more comonomers).
  • Common forms of polyethylene known in the art include Low Density Polyethylene (LDPE); Linear Low Density Polyethylene (LLDPE); Ultra Low Density Polyethylene (ULDPE); Very Low Density Polyethylene (VLDPE); single-site catalyzed Linear Low Density Polyethylene, including both linear and substantially linear low density resins (m-LLDPE); Medium Density Polyethylene (MDPE); and High Density Polyethylene (HDPE). These polyethylene materials are generally known in the art; however, the following descriptions may be helpful in understanding the differences between some of these different polyethylene resins.
  • LDPE low density polyethylene polymer
  • “highly branched polyethylene” is defined to mean that the polymer is partly or entirely homo-polymerized or copolymerized in autoclave or tubular reactors at pressures above 14,500 psi (100 MPa) with the use of free-radical initiators, such as peroxides (see for example US 4,599,392, which is hereby incorporated by reference).
  • LDPE resins typically have a density in the range of 0.916 to 0.935 g/cm 3 .
  • LLDPE includes both resin made using the traditional Ziegler- Natta catalyst systems and chromium-based catalyst systems as well as single-site catalysts, including, but not limited to, bis-metallocene catalysts (sometimes referred to as“m- LLDPE”) and constrained geometry catalysts, and includes linear, substantially linear or heterogeneous polyethylene copolymers or homopolymers.
  • LLDPEs contain less long chain branching than LDPEs and includes the substantially linear ethylene polymers which are further defined in U.S. Patent 5,272,236, U.S. Patent 5,278,272, U.S.
  • Patent 5,582,923 and US Patent 5,733, 155 the homogeneously branched linear ethylene polymer compositions such as those in U.S. Patent No. 3,645,992; the heterogeneously branched ethylene polymers such as those prepared according to the process disclosed in U.S. Patent No. 4,076,698; and/or blends thereof (such as those disclosed in US 3,914,342 or US 5,854,045).
  • the LLDPEs can be made via gas-phase, solution-phase or slurry polymerization or any combination thereof, using any type of reactor or reactor configuration known in the art.
  • HDPE refers to polyethylenes having densities greater than about 0.935 g/cm 3 and up to about 0.970 g/cm 3 , which are generally prepared with Ziegler-Natta catalysts, chrome catalysts or single-site catalysts including, but not limited to, bis- metallocene catalysts and constrained geometry catalysts.
  • Blends mean a composition of two or more polymers. Such a blend may or may not be miscible. Such a blend may or may not be phase separated. Such a blend may or may not contain one or more domain configurations, as determined from transmission electron spectroscopy, light scattering, x-ray scattering, and any other method known in the art. Blends are not laminates, but one or more layers of a laminate may contain a blend. Such blends can be prepared as dry blends, formed in situ (e.g., in a reactor), melt blends, or using other techniques known to those of skill in the art.
  • Polypropylene means polymers comprising greater than 50% by weight of units which have been derived from propylene monomer. This includes polypropylene homopolymers or copolymers (meaning units derived from two or more comonomers).
  • polypropylene known in the art include homopolymer polypropylene (hPP), random copolymer polypropylene (rcPP), impact copolymer polypropylene (hPP + at least one elastomeric impact modifier) (ICPP) or high impact polypropylene (HIPP), high melt strength polypropylene (HMS-PP), isotactic polypropylene (iPP), syndiotactic polypropylene (sPP), and combinations thereof.
  • hPP homopolymer polypropylene
  • rcPP random copolymer polypropylene
  • ICPP impact copolymer polypropylene
  • HIPP high impact polypropylene
  • HMS-PP high melt strength polypropylene
  • iPP isotactic polypropylene
  • sPP syndiotactic polypropylene
  • the artificial turf can be of any conventional structure of such turf that uses infill or particulate material.
  • the infill can assist in keeping blades upright.
  • the infill can provide other performance properties such as cushioning.
  • the artificial turf can include a substrate to which synthetic grass fibers, yarns, or blades (referred to herein as filiform) are attached.
  • the substrate can be a sheet or film like material. It may for example a thermoplastic material. It can be woven or non-woven or a solid film or sheet.
  • the filiforms i.e. synthetic grass fibers
  • the fibers can be synthetic extruded fibers (monofilaments) or (slit-film) tapes.
  • the fibers can be arranged in bundles, preferably in bundles of monofilaments. For example, one bundle may contain 4 to 20 fibers.
  • the synthetic grass fibers can be manufactured from materials chosen from the list comprising polypropylene (PP); any variant of polyethylene (PE) including low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and high density polyethylene (HDPE)); polyester (PET); and polyamide (PA).
  • PE polypropylene
  • PE polyethylene
  • LLDPE low density polyethylene
  • HDPE high density polyethylene
  • PET polyester
  • PA polyamide
  • the synthetic grass fibers manufactured from LLDPE can provide good softness and resiliency.
  • the synthetic grass fibers used in the artificial turf of the present invention can further comprise additives selected from, but not limited to, the group of infrared reflectants, UV stabilizers, anti-oxidants, fire-retardants, matting agents, luminescent compounds
  • the synthetic grass fibers can have a cross-section selected from, but not limited to, a rectangular, a diamond- shape, a round, an elliptical, a multilobal (Y, X), a C-shaped, a V-shaped, a W- shaped, a S-shaped or a W-shaped cross-section, and have dimensions of e.g. 50-500 micrometer thickness and 0.5-5.0 mm width.
  • the synthetic grass fibers can further comprise a backbone nerve, and/or a micro-textured surface to resemble grass blade nerves to further improve the resemblance to natural grass blades.
  • the synthetic grass fibers are typically in a green color e.g. a uni-color or a mixed shade of green and other colors.
  • the synthetic grass fibers can be tufted or woven through the backing.
  • the fibers can be tufted through the backing substrate.
  • the synthetic grass fibers can be formed in loop piles or cut piles.
  • the filiforms can extend from the substrate for a length of about 20 or 30 to about 60 or 50 mm.
  • the artificial turf includes particulate filling material (infill).
  • the infill can be located on the substrate.
  • the infill can be located between the filiforms.
  • the infill can serve to support the filiforms (e.g. in a substantially upright position to simulate grass blades).
  • the infill can having an average particle sizes of at least 1 mm to about 5 or to about 4 or to about 3 mm.
  • the infill can extend from the surface of the substrate for at least 5 or at leastlO mm to about 30 or to about 20 mm to support the filiform.
  • Average particle size can be determined by“Procedure to determine the particle size distribution of granulated infill materials (FIFA method 20)”.
  • the composition for use as turf infill
  • the composition disclosed herein as useful as an infill turf grass includes an elastomeric polymer, at least one of inorganic filler and a hard thermoplastic polymer and a siloxane polymer.
  • the composition can further comprises one or more of an oil and colorant.
  • the composition is resilient to contact with people and objects and if used outside is resilient to variations in temperature, humidity, water exposure, freezing, and sunlight.
  • the elastomeric polymer can be any elastomer that can be blended with other polymers and which is resilient to the conditions under which it will be used.
  • elastomeric polymer can be a styrene butadiene rubber, a styrene ethylene butylene rubber, a styrene ethylene propylene rubber, a thermoplastic polyolefin elastomer, a thermoplastic polyurethane, a thermoplastic copolyester, a thermoplastic polyamide or combinations thereof.
  • the elastomeric polymer can be a styrene butadiene styrene (SBS) block copolymer, a styrene ethylene butylene styrene (SEBS) block copolymer, or an ethylene/alpha-olefm polymer composition or combinations thereof.
  • the elastomeric polymer can be an ethylene/alpha-olefm polymer composition having a density (according to ISOl 183-1 Ed. 2012) less than 0.900 g/cm 3 and a melt index (12) (according to ISOl 133-1 Ex. 2011 (of less than 15.0 or 10.0 or 5.0 or 3.0 g/10 min and at least 0.1 g/10 min.
  • the ethylene/alpha-olefm polymer composition can have a crystallinity of less than 35%.
  • the ethylene/alpha-olefm polymer composition can have a crystallinity of at least 10%.
  • Crystallinity can be measured by dynamic scanning calorimetry (DSC) (according to ISOl 1357-1 Ed. 2013).
  • the alpha olefin used in making the ethylene/alpha-olefm can be 1-octene.
  • Commercially available examples of such ethylene/alpha-olefm polymers include INFUSETM or ENGAGETM polymers from The Dow Chemical Company.
  • the amount of elastomeric polymer in the composition can at least 5, or at least 10, weight percent and no more than 50, no more than 40, or no more than 30, weight percent based on total weight of the composition.
  • Either or both of an inorganic filler and a hard thermoplastic polymer can be useful in controlling the hardness of the particulate filling material.
  • inorganic fillers include calcium carbonate, sodium bentonite, calcium bentonite, aluminum
  • the inorganic filler can be in substantially spherical, elliptical, plate-like or whisker form.
  • the median particle size, D50, of the inorganic filler can at least 1, at least 5, at least 10, at least 20 up to 150, up to 130, up to 100, or up to 80 microns.
  • Particle size can be determined, for example, by ASTM E2980-15:“Standard test methods for estimating average particle size of powders using air permeability.
  • Test method 1 inorganic materials”.
  • the amount of inorganic filler, when used, can be at least 30 or at least 40 and no more than 80 or no more than 70 weight percent based on total weight of the composition.
  • the hard thermoplastic polymer can any thermoplastic that is harder than the elastomeric polymer.
  • the hard thermoplastic polymer can be a high density polyethylene or a polypropylene.
  • the hard thermoplastic polymer can be a polymer (preferably a polyolefin) having a density of more than 0.91 or 0.92 or 0.93 g/cm 3 .
  • the hard thermoplastic polymer can be any thermoplastic that is harder than the elastomeric polymer.
  • the hard thermoplastic polymer can be a high density polyethylene or a polypropylene.
  • the hard thermoplastic polymer can be a polymer (preferably a polyolefin) having a density of more than 0.91 or 0.92 or 0.93 g/cm 3 .
  • the hard thermoplastic polymer can be any thermoplastic that is harder than the elastomeric polymer.
  • the hard thermoplastic polymer can be a high density polyethylene or a polypropylene.
  • the hard thermoplastic polymer can be a poly
  • thermoplastic can be a high density polyethylene with a density of 0.940 to 0.970 g/cm 3 and a melt index (12) of 0.1 to 20 g/10 min as measured according to ASTM D1238 (at 190 °C and 2.16 kg).
  • the amount of the hard thermoplastic polymer, when used, can be at least 0.1 or at least 1 and no more than 20 or 15 or 10% by weight based on total weight of the composition.
  • the polysiloxane may be any siloxane which is useful in blends with other polymers.
  • the siloxane polymer can be polydimethylsiloxane (PDMS).
  • the PDMS can have a number average molecular weight (Mn) of at least 10,000, at least 50,000, or at least 100,000 and no more than 500,000, no more than 450,000, or no more than 400,000 g/mol as measured by Gel Permeation Chromatography.
  • Mn number average molecular weight
  • Mw weight average molecular weight
  • Mn number average molecular weight
  • the ViscotekTM TDA305 unit is equipped with a differential refractometer, an online differential pressure viscometer, and low angle light scattering (LALS: 7° and 90° angles of detection).
  • the mobile phase is Toluene HPLC grade.
  • the columns are two PL Gel Mixed C from Varian - (7.5 * 300 mm, 5 pm particle size) and a PL Gel Guard column from Varian - (7.5 * 300 mm) 5 fractom Injection volume with a flow of 1 mL/min and a run time of 37 min.
  • the column and detector temperature is 40°C.
  • the software used is Omnisec 4.6.1 (ViscotekTM).
  • the detectors are calibrated by injection of a narrow polystyrene standard (Mw 68,100 g/mol) of a known concentration. Correct run parameters are checked by using a narrow molecular weight distribution polystyrene standard (PS71K). The molecular weight averages must be within the Statistical Process Control (SPC) chart in order to validate the detectors calibration. Typical GPC 3 precision and accuracy (which depends on the refractive index increment) are around 2-3%.
  • SPC Statistical Process Control
  • the PDMS components can comprise an ultrahigh molecular weight
  • the PDMS components can comprise a blend of an UHMW PDMS component and the HMW PDMS component.
  • the UHMW PDMS component can have a Mn of from 150,000, from 200,000, or from 250,000 to 450,000, to 400,000, or to 350,000 g/mol.
  • the HMW PDMS can have a Mn of from 10,000 to 100,000, to 50,000, to 25,000 g/mol, or to 20,000 g/mol.
  • the amount of the polysiloxane can be at least 0.1, at least 0.5, or at least 1 weight percent based on total weight of the composition.
  • the amount of polysiloxane can be no more than 20, no more than 15, or no more than 10 weight percent based on total weight of the composition.
  • the polysiloxane can for convenience be incorporated into the composition using a carrier polymer, e.g. in a master batch.
  • a polyolefin carrier polymer may be used.
  • suitable polyolefin carriers include polyethylenes and polypropylenes.
  • the polyethylene may be a linear low density polyethylene, a low density polyethylene, a high density polyethylene.
  • a carrier polyolefin may be compounded with the polysiloxane in weight ratios of carrier: polysiloxane of at least 20:80, at least 30:70, or at least 40:60 up to no more than 70:30 or no more than 60:40.
  • the carrier may include other components such as polyamide.
  • Addition of an oil can be helpful in controlling the hardness of the composition.
  • the amount or oil can be 0 or can be at least 0.1, at leastl, at least 3, or at least 5 up to 20, up tol5, or up to 12 weight percent based on total weight of the composition.
  • suitable oils include paraffinic oil, naphthenic oil, aromatic oil and combinations thereof.
  • colorant In many applications it is desirable to include a colorant. Typically these colorants will be pigments in a polymeric carrier matrix.
  • the weight ratio of pigment to carrier can be in the range of at least 10:90, at least20:80, or at least 30:70 up to 90: 10, up to 80:20, or up to 70:30.
  • the amount of colorant (including its carrier if any is used) may be at least 0.1, at least 0.5, at least 1, at least or 2 and no more than 10, no more than 7, or no more than 5 weight percent based on total weight of the composition.
  • Additional optional additives can be used.
  • additional, optional additives include antioxidants, UV stabilizers, UV absorbers, curing agents, cross linking co-agents, boosters and retardants, processing aids, antistatic agents, nucleating agents, slip agents, plasticizers, lubricants, viscosity control agents, tackifiers, anti-blocking agents, acid scavengers, and meta deactivators. If an optional additive is used it is present in amounts less than 5, less than 4, less than 3, less than 2, or less than 1% by weight and the total amount of all the additives is less than 10, less than 8, less than 6, less than 4 or less than 2% by weight based on total weight of the composition. They can be used in amounts of at least 0.001, at least 0.01, or at least 0.1 % by weight based on total weight of the composition.
  • the composition can comprise an additional polymer such as a polyethylene, a polypropylene, a polyamide or a polyester.
  • the amount of this additional polymer is no more than 20, no more than 15, no more than 10, or no more than 5% by weight based on total weight of the composition.
  • the amount of this additional optional polymer may be 0 or at least 1% by weight based on total weight of the composition.
  • compositions may be combined and blended by known techniques such as kneading, internal mixers and extrusion blending.
  • compositions disclosed herein can have density of at least 1.1, at least 1.2, at least 1.3, or at least 1.4 g/cm 3 .
  • the compositions disclosed herein can have density of not more than 1.8 or not more than 1.7 g/cm 3 .
  • compositions disclosed herein have good abrasion resistance as measured by ISO 4649 Ed. 2010 and can show weight losses of less than 530, less than 500, less than 450, or less than 400 mg.
  • the composition can be formed into the particulate filling material by extruding and pelletizing and/or grinding.
  • the particulate filling material as described herein may be mixed with other granular infill materials such as other polymeric particles, recycled rubber, sand or the like.
  • the weight ratio of the particulate filling material as described herein to the other granular infill materials can be at least 10:90, at least20:80, or at least 30:70 up to 95:5, up to 90: 10, up to 80:20, or up to 70:30.
  • compositions and methods can alternatively comprise, consist of, or consist essentially of, any appropriate materials, steps, or components herein disclosed.
  • compositions, methods, and articles can additionally, or alternatively, be formulated so as to be devoid, or substantially free, of any materials (or species), steps, or components, that are otherwise not necessary to the achievement of the function or objectives of the compositions, methods, and articles.
  • ranges stated upper and lower limits can be combined to form ranges (e.g. “at least 1 or at least 2 weight percent” and“up to 10 or 5 weight percent” can be combined as the ranges“1 to 10 weight percent”, or“1 to 5 weight percent” or“2 to 10 weight percent” or“2 to 5 weight percent”).
  • the terms“a” and“an” and“the” do not denote a limitation of quantity and are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context.
  • An artificial turf comprising a substrate having a plurality of filiform formations extending from the substrate and a particulate filling material between the filiform formations wherein the particulate filling material comprises an elastomeric polymer, at least one of an inorganic filler or a hard thermoplastic, a siloxane polymer, and, optionally, an oil.
  • Aspect 2 The artificial turf of aspect 1 wherein the oil is used and is selected from the group consisting of paraffinic oil, naphthenic oil, aromatic oil and combinations thereof.
  • Aspect 3 The artificial turf of any of the preceding aspects wherein the particulate filler materials comprise the hard thermoplastic polymer which is selected from high density polyethylene and polypropylene.
  • Aspect 4 The artificial turf of any of the preceding aspects wherein the elastomeric polymer is selected from the group consisting of styrene-butadiene- styrene (SBS), styrene-ethylene-butadiene-styrene (SEBS), and ethylene/alpha-olefm resin having a density of less than 0.900 g/cc and a melt index (12) of less than 15.0 g/10 min.
  • SBS styrene-butadiene- styrene
  • SEBS styrene-ethylene-butadiene-styrene
  • ethylene/alpha-olefm resin having a density of less than 0.900 g/cc and a melt index (12) of less than 15.0 g/10 min.
  • Aspect 5 The artificial turf of any of the preceding aspects wherein the siloxane is a polydimethylsiloxane having a number average molecular weight of 10,000 to 500,000 g/mol, preferably 100,000 to 500,000 g/mol, as measured by gel permeation chromatography.
  • Aspect 6 The artificial turf of any of the preceding aspects wherein the hard thermoplastic is a high density polyethylene having a density 0.940 g/c to 0.970 g/cc and a melt index (12) of 0.1 g/10 min to 20 g/10 min as measured according to ASTM D1238 (at 190°C, 2.16 kg).
  • the hard thermoplastic is a high density polyethylene having a density 0.940 g/c to 0.970 g/cc and a melt index (12) of 0.1 g/10 min to 20 g/10 min as measured according to ASTM D1238 (at 190°C, 2.16 kg).
  • Aspect 7 The artificial turf of any of the preceding aspects wherein the inorganic filler is selected from calcium carbonate, sodium bentonite, calcium bentonite, aluminum trihydroxide, barium sulfate, calcium carbonate, calcium sulfate, magnesium carbonate, magnesium trihydroxide, diatomaceous earth, dolomite, glass beads, ceramic beads, kaolin, mica, perlite, natural silica, synthetic silica, wollastonite, calcite, whiskers, or combinations thereof.
  • the inorganic filler is selected from calcium carbonate, sodium bentonite, calcium bentonite, aluminum trihydroxide, barium sulfate, calcium carbonate, calcium sulfate, magnesium carbonate, magnesium trihydroxide, diatomaceous earth, dolomite, glass beads, ceramic beads, kaolin, mica, perlite, natural silica, synthetic silica, wollastonite, calcite, whiskers, or combinations thereof.
  • Aspect 8 The artificial turf of any one of the preceding aspects wherein the particulate filling material comprises 0.1 to 10 % of the hard thermoplastic, 10 to 50% of the elastomeric polymer, 30-80% of the inorganic filler, 0.1 to 15% of the oil and 0.5-15% of the siloxane based on total weight of the composition.
  • a composition useful in turf infill comprising an elastomeric polymer, at least one of an inorganic filler or a hard thermoplastic selected from high density polyethylene and polypropylene, a polydimethylsiloxane polymer, and an oil.
  • Aspect 10 A composition useful in turf infill comprising an elastomeric polymer, at least one of an inorganic filler or a hard thermoplastic selected from high density polyethylene and polypropylene, a polydimethylsiloxane polymer, and an oil.
  • the elastomeric polymer is selected from the group consisting of styrene-butadiene-styrene (SBS), styrene-ethylene-butadiene-styrene (SEBS), and ethylene/alpha-olefin resin having a density of less than 0.900 g/cc and a melt index (12) of less than 15.0 g/10 min
  • the hard thermoplastic is a high density polyethylene having a density 0.940 g/c to 0.970 g/cc and a melt index (12) of 0.1 g/10 min to 20 g/10 min as measured according to ASTM D1238 (at 190°C, 2.16 kg)
  • the polydimethylsiloxane has a number average molecular weight of 10,000 to 500,000 g/mol, preferably 100,000 to 500,000 g/mol, as measured by gel permeation chromatography.
  • Aspect 11 The composition of aspect 9 or 10 wherein the oil is selected from the group consisting of paraffinic oil, naphthenic oil, aromatic oil and combinations thereof.
  • Aspect 12 The composition of any one of aspects 9-11 wherein the inorganic filler is selected from calcium carbonate, sodium bentonite, calcium bentonite, aluminum trihydroxide, barium sulfate, calcium carbonate, calcium sulfate, magnesium carbonate, magnesium trihydroxide, diatomaceous earth, dolomite, glass beads, ceramic beads, kaolin, mica, perlite, natural silica, synthetic silica, wollastonite, calcite, whiskers, or combinations thereof.
  • the inorganic filler is selected from calcium carbonate, sodium bentonite, calcium bentonite, aluminum trihydroxide, barium sulfate, calcium carbonate, calcium sulfate, magnesium carbonate, magnesium trihydroxide, diatomaceous earth, dolomite, glass beads, ceramic beads, kaolin, mica, perlite, natural silica, synthetic silica, wollastonite, calcite, whiskers, or combinations thereof.
  • Aspect 13 The composition of any one of aspects 9-12 having 0.1 to 10 % of the hard thermoplastic, 10 to 50% of the elastomeric polymer, 30-80% of the inorganic filler, 0.1 to 15% of the oil and 0.5-15% of the polydimethylsiloxane polymer based on total weight of the composition.
  • Aspect 14 The composition of any of aspects 9-13 having an abrasion resistance as determined by weight loss using test IS04649 (Ed.2010) of less than 530 mg and a density greater than 1.1 g/cm3.
  • a particulate filling material comprising the composition of any one of aspects 9-14, preferably having an average particle size of 1 to 5 mm.

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  • Road Paving Structures (AREA)

Abstract

L'invention concerne un gazon artificiel comprenant un substrat ayant une pluralité de formations filiformes s'étendant à partir du substrat et un matériau de remplissage particulaire entre les formations filiformes pour maintenir les formations filiformes dans une position sensiblement verticale, le matériau de remplissage particulaire comprenant un polymère élastomère, au moins un élément choisi parmi une charge inorganique ou un thermoplastique dur, un polymère de siloxane et, éventuellement, une huile.
PCT/US2019/067365 2019-01-03 2019-12-19 Gazon artificiel ayant un matériau de remplissage de gazon contenant un polymère de siloxane et compositions pour fabriquer un tel matériau de remplissage de gazon Ceased WO2020142232A1 (fr)

Applications Claiming Priority (2)

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EP19382004 2019-01-03
EP19382004.0 2019-01-03

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WO2020142232A1 true WO2020142232A1 (fr) 2020-07-09

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PCT/US2019/067365 Ceased WO2020142232A1 (fr) 2019-01-03 2019-12-19 Gazon artificiel ayant un matériau de remplissage de gazon contenant un polymère de siloxane et compositions pour fabriquer un tel matériau de remplissage de gazon

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AR (1) AR117506A1 (fr)
WO (1) WO2020142232A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
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WO2023102312A1 (fr) * 2021-12-01 2023-06-08 ExxonMobil Technology and Engineering Company Produit minéral revêtu d'une polyoléfine à haute fluidité en tant que matériau particulaire servant d'agent de soutènement et procédés associés
EP4303351A1 (fr) 2022-07-04 2024-01-10 Don & Low Limited Ameliorations apportees a des surfaces artificielles ou relatives a celles-ci
WO2025199637A1 (fr) * 2024-03-25 2025-10-02 Tarkett Sports Canada Inc. Matériau à base de sable pour séquestration du carbone destiné au gazon synthétique

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US4076698B1 (fr) 1956-03-01 1993-04-27 Du Pont
US3645992A (en) 1967-03-02 1972-02-29 Du Pont Canada Process for preparation of homogenous random partly crystalline copolymers of ethylene with other alpha-olefins
US3914342A (en) 1971-07-13 1975-10-21 Dow Chemical Co Ethylene polymer blend and polymerization process for preparation thereof
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US5272236A (en) 1991-10-15 1993-12-21 The Dow Chemical Company Elastic substantially linear olefin polymers
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US5582923A (en) 1991-10-15 1996-12-10 The Dow Chemical Company Extrusion compositions having high drawdown and substantially reduced neck-in
US5854045A (en) 1994-05-12 1998-12-29 The Rockefeller University Transmembrane tyrosine phosphatase and methods of use thereof
US5733155A (en) 1995-07-28 1998-03-31 The Whitaker Corporation Female contact
EP1371779B1 (fr) 2000-05-25 2006-04-05 Mondo S.p.A. Matériau particulaire pour gazon synthétique
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US7585555B2 (en) 2005-12-23 2009-09-08 Mondo S.P.A. Synthetic-grass flooring and method for laying same
WO2009086251A1 (fr) * 2007-12-28 2009-07-09 Dow Global Technologies Inc. Mousse élastomère réticulée à base de pe avec chargements élevés en charge pour préparer des coussins amortisseurs et des articles utilisés dans des applications d'articles chaussants et de revêtements de sol
EP2119829A2 (fr) * 2008-05-13 2009-11-18 Sumitomo Rubber Industries, Ltd. Matériau granulaire pour gazon artificiel et gazon avec un tel matériau de remplissage
WO2010025868A1 (fr) 2008-08-26 2010-03-11 Melos Gmbh Utilisation d'un granulat comme granulat à répandre pour gazon synthétique
US9540777B1 (en) * 2012-04-25 2017-01-10 Christopher Tetrault Method for cooling of synthetic turf
CN105295284A (zh) 2015-11-23 2016-02-03 东莞市技塑塑胶科技有限公司 一种高回弹人造草皮草叶专用料及其制备方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023102312A1 (fr) * 2021-12-01 2023-06-08 ExxonMobil Technology and Engineering Company Produit minéral revêtu d'une polyoléfine à haute fluidité en tant que matériau particulaire servant d'agent de soutènement et procédés associés
US12043797B2 (en) 2021-12-01 2024-07-23 ExxonMobil Technology and Engineering Company High-flow polyolefin coated mineral as proppant particulate material and methods related thereto
EP4303351A1 (fr) 2022-07-04 2024-01-10 Don & Low Limited Ameliorations apportees a des surfaces artificielles ou relatives a celles-ci
WO2025199637A1 (fr) * 2024-03-25 2025-10-02 Tarkett Sports Canada Inc. Matériau à base de sable pour séquestration du carbone destiné au gazon synthétique

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