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WO2025026811A1 - Composition polymère comprenant des fibres de verre recyclées - Google Patents

Composition polymère comprenant des fibres de verre recyclées Download PDF

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Publication number
WO2025026811A1
WO2025026811A1 PCT/EP2024/070830 EP2024070830W WO2025026811A1 WO 2025026811 A1 WO2025026811 A1 WO 2025026811A1 EP 2024070830 W EP2024070830 W EP 2024070830W WO 2025026811 A1 WO2025026811 A1 WO 2025026811A1
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WIPO (PCT)
Prior art keywords
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glass fibers
weight
polymer
polymer compound
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PCT/EP2024/070830
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English (en)
Inventor
Philippe Desbois
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BASF SE
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BASF SE
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Filing date
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Application filed by BASF SE filed Critical BASF SE
Publication of WO2025026811A1 publication Critical patent/WO2025026811A1/fr
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Classifications

    • 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
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/14—Glass
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/10—Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/004—Additives being defined by their length

Definitions

  • Polymer products e.g., rotor blades of a wind power plant
  • the rotor blades commonly comprise a polymer and a reinforcement, e.g. glassfiber textiles comprising very long glass fibers.
  • a reinforcement e.g. glassfiber textiles comprising very long glass fibers.
  • the reinforcement can be separated and collected, e.g., as described in WO2020212186 A1. While conventional glass fibers for use as reinforcement in polymer compounds are coated and assembled in compact bundles, the glass fibers obtained in a recycling process are uncoated and wool-like.
  • the object of the present invention is to provide an improved method for the production of a reinforced polymer compound or product comprising recycled glass fibers, in particular wherein the method is: fast, reproducible, and less susceptible to failure; and leads to a polymer compound PC1 or product PP1 having: a predefined amount of recycled glass fibers, a high amount of recycled glass fibers, a specific length of recycled glass fibers, improved mechanical properties, and/or, preferably and, improved sustainability.
  • This object is at least partially solved by a method comprising the steps: providing a mixture M1 comprising: a polymer P1 , and glass fibers GF1, preferably wherein the glass fibers GF1 are recycled glass fibers; and mixing the mixture M1 to obtain a polymer compound PC1 comprising the polymer P1 and glass fibers GFT, wherein a bulk density of the glass fibers GF1 is 0.70 g/cm 3 or less, and/or wherein a length of the glass fibers GF1 is 30.0 mm or less.
  • the method comprises the step: converting the polymer compound PC1 to obtain a polymer product PP1 .
  • common techniques e.g., injection molding, well known to a person skilled in the art can be used.
  • the object is further at least partially solved by a polymer compound PC1 obtained by or obtainable by the method as described herein.
  • the polymer compound PC1 comprises: a polymer P1 , and glass fibers GF1'.
  • the object is further at least partially solved by a polymer product PP1 comprising the polymer compound PC1 as described herein.
  • Another aspect of the invention is the use of glass fibers GF1 for the production of a polymer compound PC1 and/or polymer product PP1 , wherein the bulk density of the glass fibers GF1 is 0.7 g/cm 3 or less, and/or wherein the length of the glass fibers GF1 is 30.0 mm or less.
  • the mixing time is not particularly limited.
  • the mixing is performed for 5 s or more, preferably 15 s or more, more preferably 20 s or more, more preferably 30 s or more, more preferably 50 s or more, more preferably 75 s or more, more preferably 100 s or more, more preferably 120 s or more, and/or the mixing is performed for 60 min or less, preferably 10 min or less, more preferably 5 min or less, more preferably 4 min or less, more preferably 180 s or less, more preferably 150 s or less, more preferably 120 s or less, more preferably 100 s or less, more preferably 80 s or less, more preferably 60 s or less, more preferably 40 s or less.
  • the mixing is performed for 5 s or more, preferably 15 s or more, more preferably 20 s or more, more preferably 30 s or more, more preferably 50 s or more, and 60 min or less, preferably 10 min or less, more preferably 5 min or less, more preferably 4 min or less, more preferably 180 s or less, more preferably 150 s or less, more preferably 120 s or less, more preferably 100 s or less, more preferably 80 s or less.
  • the mixing is performed by an extruder, preferably a twin-screw extruder.
  • an extruder preferably a twin-screw extruder.
  • the rotational speed of the extruder is not particularly limited.
  • a rotational speed of the extruder is 1 U/min or more, preferably 10 U/Min or more, more preferably 50 U/min or more, more preferably 100 U/min or more, more preferably 150 U/min or more, more preferably 200 U/min or more, and/or a rotational speed of the extruder is 500 U/min or less, preferably 400 U/Min or less, more preferably 350 U/min or less, more preferably 300 U/min or less, more preferably 250 U/min or less, more preferably 200 U/min or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the flow rate in the extruder is not particularly limited.
  • the flowrate, preferably in the extruder is 10 g/h or more, preferably 50 g/h or more, more preferably 100 g/h or more, more preferably 500 g/h or more, more preferably 1000 g/h or more, more preferably 1500 g/h or more, more preferably 2000 g/h or more, more preferably 3000 g/h or more, more preferably 5000 g/h or more, more preferably 5000 kg/h or more, more preferably 10000 kg/h or more, more preferably 15000 kg/h or more, and/or the flowrate, preferably in the extruder, is 20000 kg/h or less, preferably 15000 kg/h or less, more preferably 10000 kg/h or less, more preferably 5000 kg/h or less, more preferably 2500 kg/h or less, more preferably 20000 g/h or less, more preferably 10000 kg/h or less, more preferably 7500
  • the adjusted temperature during the mixing is not particularly limited.
  • the mixing is performed at Tm of polymer P1 or more, preferably (Tm of polymer P1 (in °C) + 10 °C) or more, more preferably (Tm of polymer P1 + 20 °C) or more, more preferably (Tm of polymer P1 + 30 °C) or more, more preferably (Tm of polymer P1 + 40 °C) or more, more preferably (Tm of polymer P1 + 50 °C) or more, and/or the mixing is performed at (Tm of polymer P1 + 100 °C) or less, preferably (Tm of polymer P1 + 90 °C) or less, more preferably (Tm of polymer P1 + 80 °C) or less, more preferably (Tm of polymer P1 + 70 °C) or less, more preferably (Tm of polymer P1 + 60 °C) or less, more preferably (Tm of polymer P1 + 50 °C
  • the temperature is high, e.g. Tm of polymer P1 or more, preferably (Tm of polymer P1 + 10 °C) or more, more preferably (Tm of polymer P1 + 20 °C) or more, more preferably (Tm of polymer P1 + 30 °C) or more, more preferably (Tm of polymer P1 + 40 °C) or more, more preferably (Tm of polymer P1 + 50 °C) or more, the susceptibility to failure of the method is reduced.
  • Tm of polymer P1 or more preferably (Tm of polymer P1 + 10 °C) or more, more preferably (Tm of polymer P1 + 20 °C) or more, more preferably (Tm of polymer P1 + 30 °C) or more, more preferably (Tm of polymer P1 + 40 °C) or more, more preferably (Tm of polymer P1 + 50 °C) or more.
  • the temperature is low, e.g., (Tm of polymer P1 + 100 °C) or less, preferably (Tm of polymer P1 + 90 °C) or less, more preferably (Tm of polymer P1 + 80 °C) or less, more preferably (Tm of polymer P1 + 70 °C) or less, more preferably (Tm of polymer P1 + 60 °C) or less, more preferably (Tm of polymer P1 + 50 °C) or less, more preferably (Tm of polymer P1 + 40 °C) or less, more preferably (Tm of polymer P1 + 30 °C) or less, more preferably (Tm of polymer P1 + 20 °C) or less, more preferably (Tm of polymer P1 + 10 °C) or less, the mechanical properties of the polymer compound PC1 are improved.
  • the temperature is Tm of polymer P1 or more, preferably (Tm of polymer P1 + 10 °C) or more, more preferably (Tm of polymer P1 + 20 °C) or more, more preferably (Tm of polymer P1 + 30 °C) or more, and (Tm of polymer P1 + 100 °C) or less, preferably (Tm of polymer P1 + 90 °C) or less, more preferably (Tm of polymer P1 + 80 °C) or less, more preferably (Tm of polymer P1 + 70 °C) or less, more preferably (Tm of polymer P1 + 60 °C) or less, more preferably (Tm of polymer P1 + 50 °C) or less, more preferably (Tm of polymer P1 + 40 °C) or less, more preferably (Tm of polymer P1 + 30 °C) or less.
  • the temperature described herein is the temperature of the barrel, e.g. the barrel temperature of the extruder.
  • the temperature of the polymer compound may vary, for example ⁇ 5°C, preferably ⁇ 2°C.
  • the mixing is performed at 220 °C or more, preferably 230 °C or more, more preferably 240 °C or more, more preferably 250 °C or more, more preferably 260 °C or more, more preferably 270 °C or more, more preferably 280 °C or more and/or the mixing is performed at 350 °C or less, preferably 300 °C or less, more preferably 290 °C or less, more preferably 270 °C or less, more preferably 260 °C or less, more preferably 250 °C or less, more preferably 240 °C or less. If the temperature is high, e.g.
  • the susceptibility to failure of the method is reduced. If the temperature is low, e.g., 350 °C or less, preferably 300 °C or less, more preferably 290 °C or less, more preferably 270 °C or less, more preferably 260 °C or less, more preferably 250 °C or less, more preferably 240 °C or less, the mechanical properties of the polymer composition PC1 are improved.
  • the temperature is 220 °C or more, preferably 230 °C or more, more preferably 240 °C or more, more preferably 250 °C or more, more preferably 260 °C or more, and 350 °C or less, preferably 300 °C or less, more preferably 290 °C or less, more preferably 270 °C or less, more preferably 260 °C or less.
  • the temperature described herein is the temperature of the barrel, e.g. the barrel temperature of the extruder.
  • the temperature of the polymer compound may vary, for example ⁇ 5°C, preferably ⁇ 2°C.
  • the time and place of adding the glass fibers to the polymer is not particularly limited.
  • the glass fibers GF1 are added to the polymer P1 in the extruder.
  • the consistency of the amount of glass fibers in the polymer compound PC1 can be improved and the amount of glass fibers in the polymer compound PC1 is increased.
  • the amount of glass fibers added per unit of time is not particularly limited.
  • the glass fibers GF1 are added to the polymer P1 in the extruder within 1 kg/min or more, preferably 5 kg/min or more, more preferably 10 kg/min or more, more preferably 30 kg/min or more, more preferably 60 kg/min or more and/or the glass fibers GF1 were added to the polymer P1 in the extruder within 120 kg/min or less, more preferably 60 kg/min or less, more preferably 40 kg/min or less, more preferably 20 kg/min or less, more preferably 15 kg/min or less, more preferably 8 kg/min or less. If the amount per time is high, the mechanical properties of the polymer are increased. If the amount per time is low, the mechanical properties of the polymer compound PC1 are improved and the susceptibility to failure of the method is reduced.
  • the glass fibers GF1 are recycled glass fibers, preferably recycled glass fiber yarns, rovings, recycled glass fiber textiles and/or fabrics, more preferably recycled glass fiber yarns, rovings and/or recycled glass fiber textiles, more preferably woven, non-woven, matt or multiaxial.
  • recycled glass fibers are glass fibers which were embedded in a polymer compound comprising a polymer and then, the polymer was at least partially removed, preferably removed.
  • the bulk density of the glass fibers is not particularly limited.
  • the bulk density of the glass fibers GF1 is 0.05 g/cm 3 or more, preferably 0.10 g/cm 3 or more, more preferably 0.15 g/cm 3 or more, more preferably 0.20 g/cm 3 or more, more preferably 0.22 g/cm 3 or more, more preferably 0.25 g/cm 3 or more, more preferably 0.30 g/cm 3 or more, more preferably 0.35 g/cm 3 or more, more preferably 0.50 g/cm 3 or more, and/or the bulk density of the glass fibers GF1 is 0.70 g/cm 3 or less, preferably 0.60 g/cm 3 or less, more preferably 0.50 g/cm 3 or less, more preferably 0.40 g/cm 3 or less, more preferably 0.30 g/cm 3 or less, more preferably 0.25 g/cm 3 or less, more preferably 0.20 g/c
  • the amount of the glass fibers in the polymer compound PC1 can be increased, e.g. up to 30 weight-% and the speed of the method is improved.
  • the bulk density is low, e.g., 0.70 g/cm 3 or less, preferably 0.60 g/cm 3 or less, more preferably 0.50 g/cm 3 or less, more preferably 0.40 g/cm 3 or less, more preferably 0.30 g/cm 3 or less, more preferably 0.25 g/cm 3 or less, more preferably 0.20 g/cm 3 or less, more preferably 0.15 g/cm 3 or less, more preferably 0.10 g/cm 3 or less, the reproducibility is improved, the susceptibility to failure of the method is reduced, and the polymer compound PC1 has an improved predefined amount of glass fibers.
  • the length of the glass fibers GF1 which are mixed with the polymer P1 is not particularly limited.
  • the length of the glass fibers GF1 is 0.01 mm or more, preferably 0.05 mm or more, more preferably 0.1 mm or more, more preferably 0.10 mm or more, more preferably 0.15 mm or more, more preferably 0.2 mm or more, more preferably 0.20 mm or more, more preferably 0.25 mm or more, more preferably 0.3 mm or more, more preferably 0.30 mm or more, more preferably 0.35 mm or more, more preferably 0.4 mm or more, more preferably 0.40 mm or more, more preferably 0.45 mm or more, more preferably 0.5 mm or more, more preferably 0.6 mm or more, more preferably 0.7 mm or more, more preferably 0.8 mm or more, more preferably 0.9 mm or more, more preferably 1.0 mm or more, more preferably 1.5 mm or more, more preferably 2.5 mm or more, more preferably
  • the fiber length is short, e.g., 30.0 mm or less, preferably 25.0 mm or less, more preferably 20.0 mm or less, more preferably 17.5 mm or less, more preferably 15.0 mm or less, more preferably 12.5 mm or less, more preferably 10.0 mm or less, more preferably 7.5 mm or less, more preferably 5.0 mm or less, more preferably 4.0 mm or less, more preferably 3.9 mm or less, more preferably 3.5 mm or less, more preferably 3.0 mm or less, more preferably 2.0 mm or less, more preferably 1.0 mm or less, more preferably 0.9 mm or less, more preferably 0.8 mm or less, more preferably 0.7 mm or less, more preferably 0.6 mm or less, more preferably 0.5 mm or less, more preferably 0.4 mm or less, more preferably 0.3 mm or less, more preferably 0.2 mm or less, more preferably 0.1 mm or less, the mechanical properties of the polymer
  • the fiber length is long, e.g., 0.01 mm or more, preferably 0.05 mm or more, more preferably 0.1 mm or more, more preferably 0.2 mm or more, more preferably 0.3 mm or more, more preferably 0.4 mm or more, more preferably 0.5 mm or more, more preferably 0.6 mm or more, more preferably 0.7 mm or more, more preferably 0.8 mm or more, more preferably 0.9 mm or more, more preferably 1 .0 mm or more, more preferably 1.5 mm or more, more preferably 2.5 mm or more, more preferably 5.0 mm or more, more preferably 7.5 mm or more, more preferably 10.0 mm or more, more preferably 15.0 mm or more, the length of the glass fibers in the polymer compound PC1 is increased and the susceptibility to failure of the method is reduced.
  • the inventors recognized, that especially if the length of the glass fibers GF1 is long, preferably 0.15 mm or more, more preferably 0.2 mm or more, more preferably 0.20 mm or more, more preferably 0.25 mm or more, more preferably 0.3 mm or more, more preferably 0.30 mm or more, more preferably 0.35 mm or more, more preferably 0.4 mm or more, more preferably 0.40 mm or more, more preferably 0.45 mm or more, more preferably 0.5 mm or more, more preferably 0.6 mm or more, more preferably 0.7 mm or more, more preferably 0.8 mm or more, more preferably 0.9 mm or more, more preferably 1.0 mm or more, more preferably 1.5 mm or more, more preferably 2.5 mm or more, more preferably 5.0 mm or more, more preferably 7.5 mm or more, more preferably 10.0 mm or more, more preferably 15.0 mm or more, and the bulk density is as described herein, the mechanical properties of the
  • the method to recycle the glass fibers is not particularly limited.
  • the glass fibers GF1 are obtained or obtainable by a method comprising the following step(s): preferably milling, crushing and/or shredding, more preferably crushing and/or shredding, a/the polymer product PP2 comprising a polymer P2 and glass fibers GF1 ", preferably wherein the glass fibers GF1” have a length of 30 mm or more, preferably 100 mm or more, annealing a/the polymer product PP2 comprising a/the polymer P2 and glass fibers GF1”, preferably wherein one or more, preferably all, of the following conditions is/are fulfilled: the temperature is at least once 250 °C or more and 1000 °C or less, preferably 320 °C or more and 800 °C or less, more preferably 350 °C or more and 800 °C or less, more preferably 450 °C or more and 600 °C or less; the annealing time
  • glass fibers GF1 exhibiting the specific length and other parameters described herein, can be obtained. This is particularly true, if the glass fibers are filtered, preferably through a sieve, more preferably through a sieve of 10 mm (mesh size) or less, more preferably 8 mm or less, more preferably 6 mm or less, more preferably 5 mm or less, more preferably 3 mm or less, more preferably 2 mm or less, more preferably 1 mm or less, after annealing, preferably after annealing; and cutting and/or chopping.
  • a sieve more preferably through a sieve of 10 mm (mesh size) or less, more preferably 8 mm or less, more preferably 6 mm or less, more preferably 5 mm or less, more preferably 3 mm or less, more preferably 2 mm or less, more preferably 1 mm or less, after annealing, preferably after annealing; and cutting and/or chopping.
  • an age of the polymer product PP2 is 1 year or more, preferably 5 years or more, more preferably 10 years or more, more preferably 20 years or more.
  • the glass fibers GF1 are etched and/or corroded.
  • a BET value [m 2 /g] and/or a disperse surface energy [mJ/m 2 ] of glass fibers GF1 and glass fiber GFT; and/or glass fibers GF1 and glass fiber GF1”; and/or glass fibers GFT and glass fiber GF1” are not the same.
  • the glass fibers GF1 might be coated or uncoated. In a preferred embodiment, the glass fibers GF1 are uncoated. Conventional and non-recycled glass fibers for polymer compound PC1s are coated, e.g. with a silane coating, a polyurethane and/or an epoxy coating.
  • the organic content of the glass fibers GF1 is not particularly limited.
  • an organic content of the glass fibers GF1 is 1 weight-% or less, preferably 0.9 weight-% or less, more preferably 0.8 weight-% or less, more preferably
  • the glass fibers GF1 are recycled glass fibers.
  • the length of glass fibers may change in a processing step, e.g. mixing or filtering. For this reason, a person skilled in the art understands that the length of the glass fibers GF1 is equal or longer than the length of the glass fibers GFT.
  • the length of the glass fibers GFT in the polymer compound PC1 is not particularly limited.
  • dO.10i eng th of the glass fibers GFT is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 70 pm or more, more preferably 100 pm or more, more preferably 110 m or more, more preferably 120 pm or more, more preferably 130 pm or more, more preferably 150 pm or more, more preferably 170 pm or more, more preferably 180 pm or more, and/or dO.10i eng th of the glass fibers GFT is 250 pm or less, preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 160 pm or less, more preferably 140 pm or less, more preferably 130 pm or less, more preferably 120 pm or less, more preferably 110 pm or less, more preferably 100 pm or less, more preferably 75 pm or less, more preferably
  • the mechanical properties of the polymer compound PC1 are improved. Especially, if the length is short, e.g., 170 pm or less, preferably 160 pm or less, more preferably 140 pm or less, more preferably 130 pm or less, more preferably 120 pm or less, more preferably 110 pm or less, more preferably 100 pm or less, more preferably 75 pm or less, more preferably 50 pm or less, the mechanical properties are improved.
  • dO.IOfrequency of the glass fibers GFT is 20 pm or more, preferably 30 pm or more, more preferably 33 pm or more, more preferably 35 pm or more, more preferably 40 pm or more, more preferably 43 pm or more, more preferably 45 pm or more, more preferably 50 pm or more, more preferably 55 pm or more, and/or dO.IOfrequency of the glass fibers GFT is 100 pm or less, preferably 90 pm or less, more preferably 80 pm or less, more preferably 70 pm or less, more preferably 60 pm or less, more preferably 50 pm or less, more preferably 45 pm or less, more preferably 42 pm or less, more preferably 40 pm or less, more preferably 35 pm or less, more preferably 32 pm or less, more preferably 30 pm or less, more preferably 25 pm or less.
  • the mechanical properties of the polymer compound PC1 are improved. Especially, if the length is short, e.g. 45 pm or less, preferably 42 pm or less, more preferably 40 pm or less, more preferably 35 pm or less, more preferably 32 pm or less, more preferably 30 pm or less, more preferably 25 pm or less, the mechanical properties of the polymer compound PC1 are improved.
  • d0.50i eng th of the glass fibers GFT is 150 pm or more, preferably 160 pm or more, more preferably 200 pm or more, more preferably 250 pm or more, more preferably 260 pm or more, more preferably 300 pm or more, more preferably 350 pm or more, more preferably 370 pm or more, more preferably 400 pm or more, more preferably 450 pm or more, and/or d0.50i eng th of the glass fibers GFT is 800 pm or less, preferably 500 pm or less, more preferably 470 pm or less, more preferably 460 pm or less, more preferably 400 pm or less, more preferably 360 pm or less, more preferably 350 pm or less, more preferably 300 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 180 pm or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the length is short, e.g., 460 pm or less, preferably 400 pm or less, more preferably 360 pm or less, more preferably 350 pm or less, more preferably 300 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 180 pm or less
  • the mechanical properties of the polymer compound PC1 are improved.
  • dO.SOfrequency of the glass fibers GFT is 40 pm or more, preferably 50 pm or more, more preferably 60 pm or more, more preferably 100 pm or more, more preferably 150 pm or more, more preferably 180 pm or more, more preferably 190 pm or more, more preferably 200 pm or more, more preferably 220 pm or more, more preferably 250 m or more, and/or dO.SOtrequency of the glass fibers GFT is 500 pm or less, preferably 300 pm or less, more preferably 260 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 150 pm or less, more preferably 100 pm or less, more preferably 60 pm or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the length is short, e.g. 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 150 pm or less, more preferably 100 pm or less, more preferably 60 pm or less, the mechanical properties of the polymer compound PC1 are improved.
  • ⁇ 100 pmi eng th of the glass fibers GFT is 5.0 % or more, preferably 5.5 % or more, more preferably 6.0 % or more, more preferably 6.5 % or more, more preferably 7.0 % or more, more preferably 7.5 % or more, more preferably 10.0 % or more, more preferably 20.0 % or more, more preferably 30.0 % or more, more preferably 35.0 % or more, and/or ⁇ 100 pmi eng th of the glass fibers GFT is 50.0 % or less, preferably 50 % or less, more preferably 40.0 % or less, more preferably 35.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less, more preferably 8.0 % or less, more preferably 7.0 % or less, more preferably 6.0 % or less, more preferably 5.5 % or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • ⁇ 100 pimtrequency of the glass fibers GFT is 15.0 % or more, preferably 20.0 % or more, more preferably 25.0 % or more, more preferably 29.0 % or more, more preferably 30.0 % or more, more preferably 31.0 % or more, more preferably 35.0 % or more, more preferably 40.0 % or more, more preferably 60.0 % or more, more preferably 70.0 % or more, and/or ⁇ 100 pimtrequency of the glass fibers GFT is 100.0 % or less, preferably 80 % or less, more preferably 70.0 % or less, more preferably 50.0 % or less, more preferably 35.0 % or less, more preferably 31.0 % or less, more preferably 30.0 % or less, more preferably 29.0 % or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • ⁇ 200 pimi eng th of the glass fibers GFT is 10.0 % or more, preferably 12.0 % or more, more preferably 15.0 % or more, more preferably 20.0 % or more, more preferably 30.0 % or more, more preferably 50.0 % or more, more preferably 55.0 % or more, and/or ⁇ 200 pimi eng th of the glass fibers GFT is 100.0 % or less, preferably 75 % or less, more preferably 60.0 % or less, more preferably 55.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • ⁇ 200 pimtrequency of the glass fibers GFT is 40.0 % or more, preferably 45.0 % or more, more preferably 50.0 % or more, more preferably 60.0 % or more, more preferably 70.0 % or more, more preferably 80.0 % or more, more preferably 85.0 % or more, and/or ⁇ 200 imtrequency of the glass fibers GFT is 100.0 % or less, preferably 85 % or less, more preferably 60.0 % or less, more preferably 55.0 % or less, more preferably 50.0 % or less, more preferably 45.0 % or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • polymer P1 is a thermoplastic polymer.
  • the mixing of the glass fibers and the polymer is simplified and the mechanical properties of the polymer compound PC1 are improved.
  • the polymer P1 and/or P2 is and/or the polymer product PP1 and/or PP2 comprises polyamide (PA); preferably PA 6 or PA 66; polyisocyanate polyaddition product; preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR); low-density polyethylene (LDPE), high-density polyethylene (HDPE), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl acetate (PVA), polystyrene (PS), poly acrylonitrile butadiene styrene (ABS), poly styrene acrylonitrile (SAN), poly acrylate styrene acrylonitrile (ASA), polytetrafluoroethylene (PTFE), poly(methyl acrylate) (PMA), poly(methyl methacrylate) (PMMA), polybutadiene (BR, PBD), poly(PA);
  • the content of the glass fibers is not particularly limited.
  • a content of the glass fiber GF1 and/or GFT in the mixture M1 , polymer compound PC1 or polymer product PP1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 21 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight- % or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 45 weight- % or more, and/or a content of the glass fiber GF1 and/or GFT in the mixture M1 , polymer compound PC1 or polymer product PP1 is 50 weight-% or less, preferably 45 weight-% or less, more preferably 40 weight-% or less, more preferably
  • the content of glass fibers GFT in the polymer compound PC1 can be increased, e.g., 10 weight-% or more, preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 45 weight-% or more; and thus, the mechanical properties of the polymer compound PC1 are improved.
  • the content is 21 weight-% or more, preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, the mechanical properties of the polymer composition PC1 are improved.
  • the content is 50 weight-% or less, preferably 45 weight-% or less, more preferably 40 weight-% or less, more preferably 35 weight- % or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight- % or less, the susceptibility to breakdown of the method is improved.
  • the content of the polymer P1 in the polymer compound PC1 is not particularly limited.
  • a content of the polymer P1 in the mixture M 1 , polymer compound PC1 or polymer product PP1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably
  • 35 weight-% or more, more preferably 40 weight-% or more, more preferably 45 weight-% or more, and/or a content of polymer P1 in the mixture M1 , polymer compound PC1 or polymer product PP1 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 85 weight-% or less, more preferably
  • polymer P1 is at least partially recycled and/or biobased.
  • the sustainability of the polymer compound PC1 is improved.
  • the content of the polymer(s) and/or the glass fibers and/or the one or more additive(s) is/are determined based on identity preservation and/or segregation and/or mass balance and/or book and claim chain of custody models, preferably based on mass balance, preferably the International Sustainability and Carbon Certification (ISCC) standard.
  • ISCC International Sustainability and Carbon Certification
  • the content of the polymer(s) and/or the glass fibers and/or the one or more additive(s) is/are determined based on a method as described in WC2023112013.
  • the polymer compound PC1 or polymer product PP1 comprises one or more additive(s), more preferably the one or more additive(s) is/are selected from fiber(s), antioxidating agent(s), stabilizer(s), lubricant(s), mineral(s), colorant(s), pigment(s), dye(s), soot, talc, carbon black, bio additive(s), plasticizer(s), flame retardant(s), and mixtures thereof.
  • the polymer compound PC1 and/or the polymer product PP1 comprises, preferably consist of, polymer P1 , glass fibers GFT and one or more additive(s).
  • the mechanical properties of the polymer compound PC1 are improved.
  • the polymer compound PC1 and/or the polymer product PP1 and/or PP2 is/are or is/are a part of: a part of a car; preferably cylinder head cover, engine cover, housing for charge air cooler, charge air cooler flap, intake pipe, intake manifold, connector, gear wheel, fan wheel, cooling water box, housing, housing part for heat exchanger, coolant cooler, charge air cooler, thermostat, water pump, radiator, fastening part, part of battery system for electromobility, dashboard, steering column switch, seat, headrest, center console, transmission component, door module, A, B, C or D pillar cover, spoiler, door handle, exterior mirror, windscreen wiper, windscreen wiper protection housing, decorative grill, cover strip, roof rail, window frame, sun
  • a Young's modulus of the polymer compound PC1 and/or polymer product PP1 is/are 6.00*10 A 3 MPa or more, preferably 6.10*10 A 3 MPa or more, more preferably 6.20*10 A 3 MPa or more, more preferably 6.30*10 A 3 MPa or more, more preferably 6.40*10 A 3 MPa or more, more preferably 6.50*10 A 3 MPa or more, more preferably 7.00*10 A 3 MPa or more, more preferably 7.50*10 A 3 MPa or more, more preferably 8.00*10 A 3 MPa or more, more preferably 8.50*10 A 3 MPa or more, more preferably 8.90*10 A 3 MPa or more, and/or a Young's modulus of the polymer compound PC1 and/or polymer product PP1 is/are 3.00*10 A 4 MPa or less, preferably 2.50*10 A 4 MPa or less, more preferably 2.00*10 A 4 MPa or less, more preferably 1.50*
  • a tensile strength of the polymer compound PC1 and/or polymer product PP1 is 90 MPa or more, preferably 95 MPa or more, more preferably 100 MPa or more, more preferably 110 MPa or more, more preferably 120 MPa or more, more preferably 130 MPa or more, and/or a tensile strength of the polymer compound PC1 and/or polymer product PP1 is 200 MPa or less, preferably 180 MPa or less, more preferably 160 MPa or less, more preferably 140 MPa or less, more preferably 130 MPa or less, more preferably 125 MPa or less, more preferably 120 MPa or less, more preferably 115 MPa or less, more preferably 110 MPa or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • an elongation at break at room temperature of the polymer compound PC1 and/or polymer product PP1 is 2.0 % or more, preferably 2.5 % or more, more preferably 2.8 % or more, more preferably 3.0 % or more, more preferably 3.2 % or more, more preferably 3.5 % or more, and/or an elongation at break at room temperature of the polymer compound PC1 and/or polymer product PP1 is 5.0 % or less, preferably 4.0 % or less, more preferably 3.5 % or less, more preferably 3.3 % or less, more preferably 3.1 % or less, more preferably 2.9 % or less, more preferably 2.7 % or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the method can be performed fast, is reproducible, and/or, preferably and, is less susceptible to failure, preferably is reproducible, and/or is less susceptible to failure.
  • the polymer compound PC1 and/or the polymer product PP1 exhibits a predefined amount of recycled glass fibers GFT, a high amount of recycled glass fibers GFT, a specific length of recycled glass fibers GFT, improved mechanical properties, and/or, preferably and, improved sustainability, preferably a predefined amount of recycled glass fibers GFT, a high amount of recycled glass fibers GFT, and/or a specific length of recycled glass fibers GFT.
  • the length of the glass fibers GFT is 100 pm or more, preferably 150 pm or more, more preferably 175 pm or more, more preferably 200 pm or more, more preferably 230 pm or more.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the length of the glass fibers GFT is 1000 pm or less, preferably 900 pm or less, more preferably 800 pm or less, more preferably 700 pm or less, more preferably 600 pm or less, more preferably 500 pm or less, more preferably 400 pm or less, more preferably 300 pm or less, more preferably 250 pm or less.
  • the weight average of the glass fibers GFT is 50 m or more, preferably 100 pm or more, more preferably 150 pm or more, more preferably 200 pm or more, more preferably 250 pm or more, more preferably 300 pm or more, more preferably 350 pm or more, more preferably 375 pm or more.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the weight average of the glass fibers GFT is 3000 pm or less, preferably 2500 pm or less, more preferably 2000 pm or less, more preferably 1500 pm or less, more preferably 1000 pm or less, more preferably 500 pm or less, more preferably 450 pm or less, more preferably 400 pm or less, more preferably 375 pm or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the weight average of the glass fibers GF1 is 200 pm or more, preferably 300 pm or more, more preferably 400 pm or more, more preferably 500 pm or more, more preferably 550 pm or more, more preferably 600 pm or more, more preferably 700 pm or more, more preferably 800 pm or more, more preferably 900 pm or more, more preferably 1000 pm or more, more preferably 1100 pm or more, more preferably 1200 pm or more, more preferably 1300 pm or more, more preferably 1400 pm or more, more preferably 1500 pm or more.
  • the mechanical properties of the polymer compound PC1 are improved.
  • the inventors recognized, that especially if the weight average of the glass fibers GF1 is long, preferably 550 pm or more, more preferably 600 pm or more, more preferably 700 pm or more, more preferably 800 pm or more, more preferably 900 pm or more, more preferably 1000 pm or more, more preferably 1100 pm or more, more preferably 1200 pm or more, more preferably 1300 pm or more, more preferably 1400 pm or more, more preferably 1500 pm or more, and the bulk density, preferably and the length of the glass fibers GF1, is/are as described herein, the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • the weight average of the glass fibers GF1 is 3000 pm or less, preferably 2750 pm or less, more preferably 2500 pm or less, more preferably 2250 pm or less, more preferably 2000 pm or less, more preferably 1750 pm or less, more preferably 1600 pm or less.
  • the mechanical properties of the polymer compound PC1 are improved.
  • dO.10i eng th of the glass fibers GF1 is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 70 pm or more, more preferably 100 pm or more, more preferably 110 pm or more, more preferably 120 pm or more, more preferably 130 pm or more, more preferably 150 pm or more, more preferably 170 pm or more, more preferably 180 pm or more, more preferably 190 pm or more, more preferably 200 pm or more, more preferably 210 pm or more.
  • dO.10i eng th of the glass fibers GF1 is 350 m or less, preferably 300 m or less, more preferably 290 pm or less, more preferably 280 pm or less, more preferably 270 pm or less, more preferably 260 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 230 pm or less, more preferably 215 pm or less.
  • the mechanical properties of the polymer compound PC1 are increased.
  • dO.IOfrequency of the glass fibers GF1 is 20 pm or more, preferably 30 pm or more, more preferably 33 pm or more, more preferably 35 pm or more, more preferably 40 pm or more, more preferably 43 pm or more, more preferably 45 pm or more, more preferably 50 pm or more, more preferably 55 pm or more.
  • the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • dO.IOfrequency of the glass fibers GF1 is 100 pm or less, preferably 90 pm or less, more preferably 80 pm or less, more preferably 70 pm or less, more preferably 60 pm or less, more preferably 50 pm or less, more preferably 45 pm or less, more preferably 42 pm or less, more preferably 40 pm or less, more preferably 35 pm or less, more preferably 32 pm or less, more preferably 30 pm or less, more preferably 25 pm or less.
  • the mechanical properties of the polymer compound PC1 are increased.
  • dO.50i eng th of the glass fibers GF1 is 100 pm or more, preferably 250 pm or more, more preferably 500 pm or more, more preferably 600 pm or more, more preferably 700 pm or more, more preferably 800 pm or more, more preferably 900 pm or more, more preferably 1000 pm or more, more preferably 1100 pm or more.
  • the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • d0.50i eng th of the glass fibers GF1 is 3000 pm or less, preferably 2500 pm or less, more preferably 2000 pm or less, more preferably 1750 pm or less, more preferably 1500 pm or less, more preferably 1250 pm or less, more preferably 1150 pm or less.
  • the mechanical properties of the polymer compound PC1 are increased.
  • dO.SOfrequency of the glass fibers GF1 is 40 pm or more, preferably 50 pm or more, more preferably 60 pm or more, more preferably 100 pm or more, more preferably 150 pm or more, more preferably 180 pm or more, more preferably 190 pm or more, more preferably 200 pm or more, more preferably 220 pm or more, more preferably 250 pm or more.
  • the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • d0.50f re quency of the glass fibers GF1 is 500 m or less, preferably 300 pm or less, more preferably 260 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 150 pm or less, more preferably 100 pm or less, more preferably 60 pm or less.
  • the mechanical properties of the polymer compound PC1 are increased.
  • ⁇ 100 pmi eng th of the glass fibers GF1 is 2.0 % or more, preferably 2.5 % or more, more preferably 3.0 % or more, more preferably 3.5 % or more, more preferably 4.0 % or more, more preferably 20.0 % or more, more preferably 30.0 % or more, more preferably 35.0 % or more.
  • the mechanical properties of the polymer compound PC1 are increased.
  • ⁇ 100 pmi eng th of the glass fibers GF1 is 50.0 % or less, preferably 50 % or less, more preferably 40.0 % or less, more preferably 35.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less, more preferably 8.0 % or less, more preferably 7.0 % or less, more preferably 6.0 % or less, more preferably 5.5 % or less, more preferably 5.0 % or less, more preferably 4.5 % or less.
  • the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • ⁇ 100 pimtrequency of the glass fibers GF1 is 10.0 % or more, preferably 20.0 % or more, more preferably 25.0 % or more, more preferably 30.0 % or more, more preferably 35.0 % or more.
  • the mechanical properties of the polymer compound PC1 are increased.
  • ⁇ 100 pimtrequency of the glass fibers GF1 is 100.0 % or less, preferably 80 % or less, more preferably 70.0 % or less, more preferably 50.0 % or less, more preferably 45.0 % or less, more preferably 40.0 % or less, more preferably 38.0 % or less.
  • the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • ⁇ 200 pimi eng th of the glass fibers GF1 is 2.0 % or more, preferably 4.0 % or more, more preferably 6.0 % or more, more preferably 8.0 % or more, more preferably 9.0 % or more.
  • the mechanical properties of the polymer compound PC1 are increased.
  • ⁇ 200 pimiength of the glass fibers GF1 is 100.0 % or less, preferably 75 % or less, more preferably 50.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less, more preferably 12.0 % or less. Especially if the value for ⁇ 200 pimiength of the glass fibers GF1 is low and the bulk density is as described herein, the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • ⁇ 200 of the glass fibers GF1 is 30.0 % or more, preferably 40.0 % or more, more preferably 45.0 % or more, more preferably 47.0 % or more, more preferably 49.0 % or more, more preferably 50.0 % or more.
  • the mechanical properties of the polymer compound PC1 are increased.
  • ⁇ 200 imtrequency of the glass fibers GF1 is 100.0 % or less, preferably 85 % or less, more preferably 75.0 % or less, more preferably 65.0 % or less, more preferably 60.0 % or less, more preferably 55.0 % or less.
  • the mechanical properties of the polymer compound PC1 are increased and the susceptibility to failure of the method is reduced.
  • a ratio [pim/pim] of a/the length of the glass fibers GFT to a/the length of the glass fibers GF1 is 0.1 to 1 .0, preferably 0.2 to 0.9, more preferably 0.3 to 0.8, more preferably 0.4 to 0.7, more preferably 0.5 to 0.6.
  • the mechanical properties of the polymer compound PC1 are increased.
  • the length of glass fibers may change in a processing step, e.g. mixing or filtering.
  • the length of the glass fibers GF1 is equal or longer than the length of the glass fibers GFT.
  • the length of glass fibers GF1 are longer than the length of glass fibers GFT and/or the length of glass fibers GFT' are longer than the length of glass fibers GFT
  • the object described herein is at least partially solved by a method comprising the steps, preferably in this order: preferably milling, crushing and/or shredding, more preferably crushing and/or shredding, a polymer product PP2 comprising a polymer P2 and glass fibers GFT'; annealing a/the polymer product PP2 comprising a/the polymer P2 and glass fibers GFT', preferably wherein one or more, preferably all, of the following conditions is/are fulfilled: the temperature is at least once 250 °C or more and 1000 °C or less, preferably 320 °C or more and 800 °C or less, more preferably 350 °C or more and 800 °C or less, more preferably 450 °C or more and 600 °C or less; the annealing time is 0.1 h or more and 48 h or less, preferably 0.5 h or more and 24 h or less, more preferably 2 h or more and 6 h or less; and/or the anne
  • the glass fibers GF1 have a length of 30 mm or more, preferably 100 mm or more.
  • the glass fibers GF1 are glass fiber roving and/or glass fiber textiles.
  • the one or more additive(s) comprise(s) glass fiber(s) vGF, preferably wherein the glass fiber(s) vGF are selected from bundled glass fiber(s), virgin glass fiber(s) and/or non-recycled glass fiber(s), preferably wherein a ratio (weight- %/weight-%) of a content of the glass fiber(s) vGF to a content of the glass fibers GF1 in the mixture M1 and/or a ratio (weight- %/weight-%) of a content of the glass fiber(s) vGF to a content of the glass fibers GFT in the polymer compound PC1 and/or polymer product PP1 is 0.01 to 100, preferably 0.1 to 10, more preferably 0.5 to 5, more preferably about 1.
  • Tm and Tg were measured with DSC.
  • DSC measurements were done according to DIN EN ISO 11357 using heat/cool Ing rate of 20K/min in a temperature range of 0 - 280°C on a Perkin Elmer DSC 8000.
  • the bulk density was measured as follows: A 250 mL measuring cylinder is filled with polymer pellet until reaching the 250 ml mark. The weight of the cylinder is measured empty and filled. The difference give the weight of a volume of 250 mL polymer pellet, this value is multiply by 4 to give the bulk density.
  • the dosability was evaluated as follows: The funnel of the extruder (Thermofischer; Haake) is filled with the necessary amount of fiber for the whole experiment. The selected throughput is 0,6 kg/h glass fiber to reach 2.0 kg/h polymer compound. This means 10 g glass fiber have to be metered in the extruder per minute. This target value is regularly measured weighting the fiber in the funnel after one minute metering. If this value differs from the target by more than 10 %, it was considered that the dosability is not given (-). If it differs from the target 10 % or less, it is given (+).
  • Organic content of the glass fibers GF1 was determined as follows: 5 mg glass fibers have been placed in the chamber of a TGA (thermogravimetric analysis) device (Q5000IR, TA instruments) and heated until 600°C at 10 °C/min. The weight loss in % during this heating corresponds to the organic content of the fiber.
  • TGA thermogravimetric analysis
  • the content of the glass fibers GF1 and/or GFT was determined as follows: 5 mg compound have been placed in the chamber of a TGA device (Q5000IR, TA instruments) and heated until 600°C at 10K/Min. The weight loss during this heating is the polymer content and/or organic additive content of the polymer compound. Content of glass fibers corresponds to 100 % - (weight loss in %).
  • the length of the glass fibers GF1 was measured as follows: 5 to 20 mg, preferably 10 mg glass fibers are dispersed in a mixture of 100 mL water and 2 drops of glycerin and transferred to a petri dish, which is placed on the surface of an Epson perfection V850 Pro flatbed scanner. Fibers shorter than 21 .2 pm cannot be detected due to the limited resolution of the scanner. Thus, fibers being shorter than 21 .2 pm are not considered.
  • average weight of glass fibers GF1 (L sqU are)/(Ltotai); wherein L sqU are is the sum of the squares of the lengths (pm) of all fibers, and wherein Ltotai is the sum of the length (pm) of all fibers GF1 .
  • L100pmi eng th is the sum of the length (pm) of all fibers GF1 being smaller than 100 pm
  • Length is the sum of the length (pm) of all fibers GF1
  • L100pmfre q uency is the sum of all fibers GF1 being smaller than 100 pm
  • Lfrequency is the sum of all fibers GF1 .
  • L200pmi en gth is the sum of the length (pm) of all fibers GF1 being smaller than 200 pm
  • Length is the sum of the length (pm) of all fibers GF1 .
  • L200pmf re quency is the sum of all fibers GF1 being smaller than 200 pm
  • Lfrequency is the sum of all fibers GF1 .
  • dO.10length ⁇ d0.10length — 0.1 X Llength
  • Li eng th is the sum of the length (pm) of all fibers GF1 .
  • d0.10frequency maximum length of 10% of the smallest fibers GF1.
  • d0.50freq U ency maximum length of 50% of the smallest fibers GF1 .
  • the length of the glass fibers GF1 was determined as follows:
  • the polymer compound comprising the glass fibers was pyrolyzed at 650°C for 1 .5 h to obtain the glass fibers. Then, a tip of a spatula (about 5 mg) glass fibers are dispersed in a mixture of 100 mL water and 2 drops of glycerin and transferred to a petri dish, which is placed on the surface of an Epson perfection V850 Pro flatbed scanner. This type of scanner is able to analyze the length of about 80 000 fibers at the same time. Fibers shorter than 21 .2 pm cannot be detected due to the limited resolution of the scanner. Thus, fibers being shorter than 21.2 pm are not considered.
  • the length of the glass fibers GFT was determined as follows:
  • the polymer compound comprising the glass fibers was pyrolyzed at 650°C for 1.5 h to obtain the glass fibers. Then, a tip of a spatula (about 5 mg) glass fibers are dispersed in a mixture of 100 mL water and 2 drops of glycerin and transferred to a petri dish, which is placed on the surface of an Epson perfection V850 Pro flatbed scanner. Fibers shorter than 21.2 pm cannot be detected due to the limited resolution of the scanner. Thus, fibers being shorter than 21.2 pm are not considered.
  • average weight of glass fibers GFT wherein L sqU are is the sum of the squares of the lengths (pm) of all fibers, and wherein Ltotai is the sum of the length (pm) of all fibers GFT.
  • L100pmi eng th is the sum of the length (pm) of all fibers GFT being smaller than 100 pm, and wherein is the sum of the length (pm) of all fibers GFT.
  • L100pmfre q uency is the sum of all fibers GFT being smaller than 100 pm, and wherein the sum of all fibers GFT.
  • L200pmi en gth is the sum of the length (pm) of all fibers GFT being smaller than 200 pm, and wherein is the sum of the length (pm) of all fibers GFT.
  • L200 is the sum of all fibers GFT being smaller than 200 pm, and wherein the sum of all fibers GFT.
  • 0.1 wherein is the sum of the length (pm) of all fibers GFT.
  • the organic content of the glass fibers was measured by TGA (Q5000IR, TA instruments) using heat/cooling rate of 20K/min in a temperature range of 0 - 600°C.
  • the BET was measured using inverse chromatography.
  • the glass fibers were pyrolyzed at 650°C for 1 .5 h to get rid of the organic content.
  • 1 .5-2.2 g of the glass fibers were incorporated in the column of a chromatogram, Fisons Mega HRGC2 equipped with FID detector.
  • This certified stainless chromatography column has a length of 100 mm and an inner diameter of 4 mm.
  • This column is conditioned 16h at 30°C in a flow of dry Helium (12 mL/min), the same gas was used at 30°C and 20 mL/min as carrier.
  • Measurements are carried out with octane at different pressures to obtain the BET value in m 2 /g.
  • the disperse surface energy in mJ/m 2 can be obtained.
  • the mixture M1 may comprise any other reinforcement, e.g. other glass fibers, carbon fibers, beads, stone powder, however, preferably the mixture M1 and thus also the polymer compound PC1 and the polymer product PP1 and/or PP2 do(es) not contain any further glass fibers, preferably any further fibers, more preferably any further reinforcement.
  • any other reinforcement e.g. other glass fibers, carbon fibers, beads, stone powder, however, preferably the mixture M1 and thus also the polymer compound PC1 and the polymer product PP1 and/or PP2 do(es) not contain any further glass fibers, preferably any further fibers, more preferably any further reinforcement.
  • normal conditions e.g., room temperature, preferably 25°C, and 1 bar, preferably 1013.25 mbar.
  • Method comprising the steps: providing a mixture M1 comprising: a polymer P1 , and glass fibers GF1 ; and mixing the mixture M1 to obtain a polymer compound PC1 comprising the polymer P1 and glass fibers GFT.
  • the method comprises the step: converting the polymer compound PC1 to obtain a polymer product PP1.
  • Polymer compound PC1 obtained by or obtainable by the method according to any one of the preceding embodiments.
  • Polymer compound PC1 preferably according to any one of the preceding embodiments, wherein the polymer compound PC1 comprises: a polymer P1 , and glass fibers GF1'.
  • Polymer product PP1 comprising the polymer compound PC1 according to any one of the preceding embodiments.
  • glass fibers GF1 for the production of a polymer compound PC1 and/or polymer product PP1 , wherein the bulk density of the glass fibers GF1 is 0.7 g/cm 3 or less, and/or wherein the length of the glass fibers GF1 is 30.0 mm or less.
  • polymer compound PC1 , polymer product PP1 or use according to any one of the preceding embodiments wherein the mixing is performed for 60 min or less, preferably 10 min or less, more preferably 5 min or less, more preferably 4 min or less, more preferably 180 s or less, more preferably 150 s or less, more preferably 120 s or less, more preferably 100 s or less, more preferably 80 s or less, more preferably 60 s or less, more preferably 40 s or less.
  • the mixing is performed by an extruder, preferably a twin-screw extruder.
  • a rotational speed of the extruder is 1 U/min or more, preferably 10 U/Min or more, more preferably 50 U/min or more, more preferably 100 U/min or more, more preferably 150 U/min or more, more preferably 200 U/min or more.
  • a rotational speed of the extruder is 500 U/min or less, preferably 400 U/Min or less, more preferably 350 U/min or less, more preferably 300 U/min or less, more preferably 250 U/min or less, more preferably 200 U/min or less.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein the glass fibers GF1 are added to the polymer P1 in the extruder within 1 kg/min or more, preferably 5 kg/min or more, more preferably 10 kg/min or more, more preferably 30 kg/min or more, more preferably 60 kg/min or more.
  • glass fibers GF1 are recycled glass fibers, preferably recycled glass fiber yarns, rovings, recycled glass fiber textiles and/or fabrics, more preferably recycled glass fiber rovings and/or recycled glass fiber textiles.
  • a/the bulk density of the glass fibers GF1 is 0.05 g/cm 3 or more, preferably 0.10 g/cm 3 or more, more preferably 0.15 g/cm 3 or more, more preferably 0.20 g/cm 3 or more, more preferably 0.22 g/cm 3 or more, more preferably 0.25 g/cm 3 or more, more preferably 0.30 g/cm 3 or more, more preferably 0.35 g/cm 3 or more, more preferably 0.50 g/cm 3 or more.
  • a/the bulk density of the glass fibers GF1 is 0.70 g/cm 3 or less, preferably 0.60 g/cm 3 or less, more preferably 0.50 g/cm 3 or less, more preferably 0.40 g/cm 3 or less, more preferably 0.30 g/cm 3 or less, more preferably 0.25 g/cm 3 or less, more preferably 0.20 g/cm 3 or less, more preferably 0.15 g/cm 3 or less, more preferably 0.10 g/cm 3 or less.
  • a/the length of the glass fibers GF1 is 0.01 mm or more, preferably 0.05 mm or more, more preferably 0.1 mm or more, more preferably 0.10 mm or more, more preferably 0.15 mm or more, more preferably 0.2 mm or more, more preferably 0.20 mm or more, more preferably 0.25 mm or more, more preferably 0.3 mm or more, more preferably 0.30 mm or more, more preferably 0.35 mm or more, more preferably 0.4 mm or more, more preferably 0.40 mm or more, more preferably 0.45 mm or more, more preferably 0.5 mm or more, more preferably 0.6 mm or more, more preferably 0.7 mm or more, more preferably 0.8 mm or more, more preferably 0.9 mm or more, more preferably 1.0 mm or more, more preferably 1.5 mm or more, more preferably 2.5 mm
  • a/the length of the glass fibers GF1 is 30.0 mm or less, preferably 25.0 mm or less, more preferably 20.0 mm or less, more preferably 17.5 mm or less, more preferably 15.0 mm or less, more preferably 12.5 mm or less, more preferably 10.0 mm or less, more preferably 7.5 mm or less, more preferably 5.0 mm or less, more preferably 4.0 mm or less, more preferably 3.9 mm or less, more preferably 3.5 mm or less, more preferably 3.0 mm or less, more preferably 2.0 mm or less, more preferably 1.0 mm or less, more preferably 0.9 mm or less, more preferably 0.8 mm or less, more preferably 0.7 mm or less, more preferably 0.6 mm or less, more preferably 0.5 mm or less, more preferably 0.4 mm or less, more preferably
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein an age of the polymer product PP2 is 1 year or more, preferably 5 years or more, more preferably 10 years or more, more preferably 20 years or more.
  • an age of the polymer product PP2 is 1 year or more, preferably 5 years or more, more preferably 10 years or more, more preferably 20 years or more.
  • the glass fibers GF1 are etched and/or corroded.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein a BET value [m 2 /g] and/or a disperse surface energy [mJ/m 2 ] of glass fibers GF1 and glass fiber GFT; and/or glass fibers GF1 and glass fiber GF1”; and/or glass fibers GFT and glass fiber GF1” are not the same.
  • an organic content of the glass fibers GF1 is 1 weight-% or less, preferably 0.9 weight-% or less, more preferably 0.8 weight-% or less, more preferably 0.7 weight-% or less, more preferably 0.6 weight-% or less, more preferably 0.5 weight-% or less, more preferably 0.4 weight-% or less, more preferably 0.3 weight-% or less, more preferably 0.2 weight-% or less, more preferably 0.1 weight-% or less, more preferably 0.05 weight-% or less, more preferably 0.03 weight-% or less, more preferably 0.01 weight-% or less.
  • dO.10i eng th of the glass fibers GFT is 250 pm or less, preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 160 pm or less, more preferably 140 pm or less, more preferably 130 pm or less, more preferably 120 pm or less, more preferably 110 pm or less, more preferably 100 pm or less, more preferably 75 pm or less, more preferably 50 pm or less.
  • dO.IOfrequency of the glass fibers GFT is 20 pm or more, preferably 30 pm or more, more preferably 33 pm or more, more preferably 35 pm or more, more preferably 40 pm or more, more preferably 43 pm or more, more preferably 45 pm or more, more preferably 50 pm or more, more preferably 55 pm or more.
  • dO.IOfrequency of the glass fibers GFT is 100 pm or less, preferably 90 pm or less, more preferably 80 pm or less, more preferably 70 pm or less, more preferably 60 pm or less, more preferably 50 pm or less, more preferably 45 pm or less, more preferably 42 pm or less, more preferably 40 pm or less, more preferably 35 pm or less, more preferably 32 pm or less, more preferably 30 pm or less, more preferably 25 pm or less.
  • d0.50i eng th of the glass fibers GFT is 150 pm or more, preferably 160 pm or more, more preferably 200 pm or more, more preferably 250 pm or more, more preferably 260 pm or more, more preferably 300 pm or more, more preferably 350 pm or more, more preferably 370 pm or more, more preferably 400 pm or more, more preferably 450 pm or more.
  • d0.50i eng th of the glass fibers GFT is 800 pm or less, preferably 500 pm or less, more preferably 470 pm or less, more preferably 460 pm or less, more preferably 400 pm or less, more preferably 360 pm or less, more preferably 350 pm or less, more preferably 300 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 180 pm or less. 42.
  • dO.SOfrequency of the glass fibers GFT is 40 pirn or more, preferably 50 m or more, more preferably 60 pm or more, more preferably 100 pm or more, more preferably 150 pm or more, more preferably 180 pm or more, more preferably 190 pm or more, more preferably 200 pm or more, more preferably 220 pm or more, more preferably 250 pm or more.
  • dO.SOtrequency of the glass fibers GFT is 500 pm or less, preferably 300 pm or less, more preferably 260 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 150 pm or less, more preferably 100 pm or less, more preferably 60 pm or less.
  • ⁇ 100 pmi eng th of the glass fibers GFT is 5.0 % or more, preferably 5.5 % or more, more preferably 6.0 % or more, more preferably 6.5 % or more, more preferably 7.0 % or more, more preferably 7.5 % or more, more preferably 10.0 % or more, more preferably 20.0 % or more, more preferably 30.0 % or more, more preferably 35.0 % or more.
  • ⁇ 100 pmi eng th of the glass fibers GFT is 50.0 % or less, preferably 50 % or less, more preferably 40.0 % or less, more preferably 35.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less, more preferably 8.0 % or less, more preferably 7.0 % or less, more preferably 6.0 % or less, more preferably 5.5 % or less.
  • ⁇ 100 of the glass fibers GFT is 15.0 % or more, preferably 20.0 % or more, more preferably 25.0 % or more, more preferably 29.0 % or more, more preferably 30.0 % or more, more preferably 31.0 % or more, more preferably 35.0 % or more, more preferably 40.0 % or more, more preferably 60.0 % or more, more preferably 70.0 % or more.
  • ⁇ 100 of the glass fibers GFT is 100.0 % or less, preferably 80 % or less, more preferably 70.0 % or less, more preferably 50.0 % or less, more preferably 35.0 % or less, more preferably 31 .0 % or less, more preferably 30.0 % or less, more preferably 29.0 % or less.
  • ⁇ 200 pimi eng th of the glass fibers GFT is 100.0 % or less, preferably 75 % or less, more preferably 60.0 % or less, more preferably 55.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein of the glass fibers GFT is 40.0 % or more, preferably 45.0 % or more, more preferably 50.0 % or more, more preferably 60.0 % or more, more preferably 70.0 % or more, more preferably 80.0 % or more, more preferably 85.0 % or more.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein ⁇ 200 of the glass fibers GFT is 100.0 % or less, preferably 85 % or less, more preferably 60.0 % or less, more preferably 55.0 % or less, more preferably 50.0 % or less, more preferably 45.0 % or less.
  • polymer P1 is a thermoplastic polymer.
  • polymer P1 and/or P2 is and/or polymer product PP1 and/or PP2 comprises polyamide (PA); preferably PA 6 or PA 66; polyisocyanate polyaddition product; preferably polyurethane (PU), thermoplastic polyurethane (TPU), polyurea or polyisocyanurate (PIR); low-density polyethylene (LDPE), high-density polyethylene (HDPE), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl acetate (PVA), polystyrene (PS), poly acrylonitrile butadiene styrene (ABS), poly styrene acrylonitrile (SAN), poly acrylate styrene acrylonitrile (ASA), polytetrafluoroethylene (PTFE), poly(methyl acrylate) (PMA), polyamide (PA); preferably PA 6 or PA 66; polyisocyanate polyaddition product; preferably polyurethan
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein a content of the glass fiber GF1 and/or GF1' in the mixture M1 , polymer compound PC1 or polymer product PP1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 21 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 45 weight-% or more.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein a content of the glass fiber GF1 and/or GF1' in the mixture M1 , polymer compound PC1 or polymer product PP1 is 50 weight-% or less, preferably 45 weight-% or less, more preferably 40 weight-% or less, more preferably 35 weight-% or less, more preferably 30 weight-% or less, more preferably 25 weight-% or less, more preferably 20 weight-% or less, more preferably 15 weight-% or less, more preferably 10 weight-% or less, more preferably 5 weight-% or less.
  • a content of the polymer P1 in the mixture M1 , polymer compound PC1 or polymer product PP1 is 1 weight-% or more, preferably 2 weight-% or more, more preferably 3 weight-% or more, more preferably 4 weight-% or more, more preferably 5 weight-% or more, more preferably 10 weight-% or more, more preferably 15 weight-% or more, more preferably 20 weight-% or more, more preferably 25 weight-% or more, more preferably 30 weight-% or more, more preferably 35 weight-% or more, more preferably 40 weight-% or more, more preferably 45 weight-% or more.
  • a content of polymer P1 in the mixture M1 , polymer compound PC1 or polymer product PP1 is 99 weight-% or less, preferably 95 weight-% or less, more preferably 90 weight-% or less, more preferably 85 weight-% or less, more preferably 80 weight-% or less, more preferably 75 weight-% or less, more preferably 50 weight-% or less, more preferably 35 weight-% or less.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein the polymer compound PC1 and/or the polymer product PP1 comprises, preferably consist of, polymer P1 , glass fibers GF1' and one or more additive(s).
  • a Young's modulus of the polymer compound PC1 and/or polymer product PP1 is/are 6.00*10 A 3 MPa or more, preferably 6.10*10 A 3 MPa or more, more preferably 6.20*10 A 3 MPa or more, more preferably 6.30*10 A 3 MPa or more, more preferably 6.40*10 A 3 MPa or more, more preferably 6.50*10 A 3 MPa or more, more preferably 7.00*10 A 3 MPa or more, more preferably 7.50*10 A 3 MPa or more, more preferably 8.00*10 A 3 MPa or more, more preferably 8.50*10 A 3 MPa or more, more preferably 8.90*10 A 3 MPa or more.
  • a Young's modulus of the polymer compound PC1 and/or polymer product PP1 is/are 3.00*10 A 4 MPa or less, preferably 2.50*10 A 4 MPa or less, more preferably 2.00*10 A 4 MPa or less, more preferably 1.50*10 A 4 MPa or less, more preferably 1.00*10 A 4 MPa or less, more preferably 9.50*10 A 3 MPa or less, more preferably 9.00*10 A 4 MPa or less, more preferably 8.00*10 A 4 MPa or less, more preferably 7.00*10 A 4 MPa or less, more preferably 6.50*10 A 4 MPa or less, more preferably 6.20*10 A 4 MPa or less.
  • a tensile strength of the polymer compound PC1 and/or polymer product PP1 is 90 MPa or more, preferably 95 MPa or more, more preferably 100 MPa or more, more preferably 110 MPa or more, more preferably 120 MPa or more, more preferably 130 MPa or more.
  • a tensile strength of the polymer compound PC1 and/or polymer product PP1 is 200 MPa or less, preferably 180 MPa or less, more preferably 160 MPa or less, more preferably 140 MPa or less, more preferably 130 MPa or less, more preferably 125 MPa or less, more preferably 120 MPa or less, more preferably 115 MPa or less, more preferably 110 MPa or less.
  • polymer compound PC1 polymer product PP1 or use according to any one of the preceding embodiments, wherein an elongation at break at room temperature of the polymer compound PC1 and/or polymer product PP1 is 2.0 % or more, preferably 2.5 % or more, more preferably 2.8 % or more, more preferably 3.0 % or more, more preferably 3.2 % or more, more preferably 3.5 % or more.
  • an elongation at break at room temperature of the polymer compound PC1 and/or polymer product PP1 is 5.0 % or less, preferably 4.0 % or less, more preferably 3.5 % or less, more preferably 3.3 % or less, more preferably 3.1 % or less, more preferably 2.9 % or less, more preferably 2.7 % or less.
  • Method, polymer compound PC1 , polymer product PP1 or use according to any one of the preceding embodiments, wherein the method can be performed fast, is reproducible, and/or, preferably and, is less susceptible to failure, preferably is reproducible, and/or is less susceptible to failure.
  • the weight average of the glass fibers GF1 is 200 pm or more, preferably 300 pm or more, more preferably 400 m or more, more preferably 500 pm or more, more preferably 550 pm or more, more preferably 600 pm or more, more preferably 700 pm or more, more preferably 800 pm or more, more preferably 900 pm or more, more preferably 1000 pm or more, more preferably 1100 pm or more, more preferably 1200 pm or more, more preferably 1300 pm or more, more preferably 1400 pm or more, more preferably 1500 pm or more.
  • dO.10i eng th of the glass fibers GF1 is 20 pm or more, preferably 30 pm or more, more preferably 40 pm or more, more preferably 50 pm or more, more preferably 70 pm or more, more preferably 100 pm or more, more preferably 110 pm or more, more preferably 120 pm or more, more preferably 130 pm or more, more preferably 150 pm or more, more preferably 170 pm or more, more preferably 180 pm or more, more preferably 190 pm or more, more preferably 200 pm or more, more preferably 210 pm or more.
  • dO.10i eng th of the glass fibers GF1 is 350 pm or less, preferably 300 pm or less, more preferably 290 pm or less, more preferably 280 pm or less, more preferably 270 pm or less, more preferably 260 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 230 pm or less, more preferably 215 pm or less.
  • dO.IOfrequency of the glass fibers GF1 is 20 pm or more, preferably 30 pm or more, more preferably 33 pm or more, more preferably 35 pm or more, more preferably 40 pm or more, more preferably 43 pm or more, more preferably 45 pm or more, more preferably 50 pm or more, more preferably 55 pm or more.
  • dO.IOfrequency of the glass fibers GF1 is 100 pm or less, preferably 90 pm or less, more preferably 80 pm or less, more preferably 70 pm or less, more preferably 60 pm or less, more preferably 50 pm or less, more preferably 45 pm or less, more preferably 42 pm or less, more preferably 40 pm or less, more preferably 35 pm or less, more preferably 32 pm or less, more preferably 30 pm or less, more preferably 25 pm or less.
  • d0.50i eng th of the glass fibers GF1 is 100 pm or more, preferably 250 pm or more, more preferably 500 pm or more, more preferably 600 pm or more, more preferably 700 pm or more, more preferably 800 pm or more, more preferably 900 pm or more, more preferably 1000 pm or more, more preferably 1100 pm or more.
  • d0.50i eng th of the glass fibers GF1 is 3000 pm or less, preferably 2500 pm or less, more preferably 2000 pm or less, more preferably 1750 pm or less, more preferably 1500 pm or less, more preferably 1250 pm or less, more preferably 1150 pm or less.
  • dO.SOfrequency of the glass fibers GF1 is 40 pm or more, preferably 50 pm or more, more preferably 60 pm or more, more preferably 100 pm or more, more preferably 150 pm or more, more preferably 180 pm or more, more preferably 190 pm or more, more preferably 200 pm or more, more preferably 220 pm or more, more preferably 250 pm or more.
  • dO.SOfrequency of the glass fibers GF1 is 500 pm or less, preferably 300 pm or less, more preferably 260 pm or less, more preferably 250 pm or less, more preferably 240 pm or less, more preferably 200 pm or less, more preferably 190 pm or less, more preferably 180 pm or less, more preferably 170 pm or less, more preferably 150 pm or less, more preferably 100 pm or less, more preferably 60 pm or less.
  • ⁇ 100 pmi eng th of the glass fibers GF1 is 2.0 % or more, preferably 2.5 % or more, more preferably 3.0 % or more, more preferably 3.5 % or more, more preferably 4.0 % or more, more preferably 20.0 % or more, more preferably 30.0 % or more, more preferably 35.0 % or more.
  • ⁇ 100 pmiength of the glass fibers GF1 is 50.0 % or less, preferably 50 % or less, more preferably 40.0 % or less, more preferably 35.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less, more preferably 8.0 % or less, more preferably 7.0 % or less, more preferably 6.0 % or less, more preferably 5.5 % or less, more preferably 5.0 % or less, more preferably 4.5 % or less.
  • ⁇ 100 pimtrequency of the glass fibers GF1 is 100.0 % or less, preferably 80 % or less, more preferably 70.0 % or less, more preferably 50.0 % or less, more preferably 45.0 % or less, more preferably 40.0 % or less, more preferably 38.0 % or less.
  • ⁇ 200 imi eng th of the glass fibers GF1 is 100.0 % or less, preferably 75 % or less, more preferably 50.0 % or less, more preferably 25.0 % or less, more preferably 15.0 % or less, more preferably 12.0 % or less.
  • ⁇ 200 pimtrequency of the glass fibers GF1 is 30.0 % or more, preferably 40.0 % or more, more preferably 45.0 % or more, more preferably 47.0 % or more, more preferably 49.0 % or more, more preferably 50.0 % or more.
  • ⁇ 200 imtrequency of the glass fibers GF1 is 100.0 % or less, preferably 85 % or less, more preferably 75.0 % or less, more preferably 65.0 % or less, more preferably 60.0 % or less, more preferably 55.0 % or less.
  • a ratio [pim/pim] of a/the length of the glass fibers GF1 ' to a/the length of the glass fibers GF1 is 0.1 to 1.0, preferably 0.2 to 0.9, more preferably 0.3 to 0.8, more preferably 0.4 to 0.7, more preferably 0.5 to 0.6.
  • Method, polymer compound PC1 , polymer product PP1 or use preferably according to any one of the preceding embodiments, comprising the steps, preferably in this order: preferably milling, crushing and/or shredding, more preferably crushing and/or shredding, a polymer product PP2 comprising a polymer P2 and glass fibers GF1”; annealing a/the polymer product PP2 comprising a/the polymer P2 and glass fibers GF1 ”, preferably wherein one or more, preferably all, of the following conditions is/are fulfilled: the temperature is at least once 250 °C or more and 1000 °C or less, preferably 320 °C or more and 800 °C or less, more preferably 350 °C or more and 800 °C or less, more preferably 450 °C or more and 600 °C or less; the annealing time is 0.1 h or more and 48 h or less, preferably 0.5 h or more and 24 h or less,
  • the one or more additive(s) comprise(s) glass fiber(s) vGF, preferably wherein the glass fiber(s) vGF are selected from bundled glass fiber(s), virgin glass fiber(s) and/or non-recycled glass fiber(s), preferably wherein a ratio (weight- %/weight-%) of a content of the glass fiber(s) vGF to a content of the glass fibers GF1 in the mixture M1 and/or a ratio (weight-%/weight-%) of a content of the glass fiber(s) vGF to a content of the glass fibers GFT in the polymer compound PC1 and/or polymer product PP1 is 0.01 to 100, preferably 0.1 to 10, more preferably 0.5 to 5, more preferably about 1. Examples
  • the glass fibers GF1 were obtained according to the following method: A polymer compound derived from a rotor blade comprising glass fiber textiles was shredded using a machine Hammermuhle L04 from the company Eriez. The shredded composite was pyrolyzed using an oven Nabertherm from the company Fischer Scientific for 4h at 500°C in the presence of air. These glass fibers were used as they are (B2) or grinded and sieved using a grinder C17.26sv from the company Wanner equipped with a sieve of 1 mm (for B3) or 5 mm (for B4).
  • A1 Polyamide 6 (PA6, Ultramid® B27E; BASF SE)
  • Example 1 The components listed in Table 1 were mixed with a twin screw extruder (Thermofischer; Haake); at 100 rpm with a barrel temperature of 260°C and a throughput of 2.0 kg/h) and then granulated. Test specimens were formed of the granulate by injection molding using an injection molding machine (Xplore) and analyzed. In the measurements, the following values were obtained: Example # Example 1 Example 2 Example 3 Example 4 unit

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Abstract

L'invention concerne un procédé spécifique de production d'une composition polymère comprenant des fibres de verre recyclées et une composition polymère spécifique comprenant des fibres de verre recyclées.
PCT/EP2024/070830 2023-07-28 2024-07-23 Composition polymère comprenant des fibres de verre recyclées Pending WO2025026811A1 (fr)

Applications Claiming Priority (2)

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EP23188504 2023-07-28
EP23188504.7 2023-07-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069365A1 (fr) * 2011-11-10 2013-05-16 ユニチカ株式会社 Composition de résine thermoplastique et corps moulé formé à partir de celle-ci
US20150259511A1 (en) * 2013-09-27 2015-09-17 Sumitomo Riko Company Limited Glass-fiber-reinforced thermoplastic resin molding product, and production method therefor
WO2020212186A1 (fr) 2019-04-15 2020-10-22 Lanxess Deutschland Gmbh Procédé pour le recyclage de matières plastiques renforcées de fibres de verre
US20210032437A1 (en) * 2018-04-13 2021-02-04 Basf Se Flame-retardant thermoplastic molding composition
US20220380577A1 (en) * 2020-02-06 2022-12-01 Nitto Boseki Co., Ltd. Glass-fiber-reinforced resin composition and molded glass-fiber-reinforced resin article
WO2023112013A2 (fr) 2022-09-09 2023-06-22 Basf Se Équilibrage d'attributs environnementaux dans des réseaux de production chimique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013069365A1 (fr) * 2011-11-10 2013-05-16 ユニチカ株式会社 Composition de résine thermoplastique et corps moulé formé à partir de celle-ci
US20150259511A1 (en) * 2013-09-27 2015-09-17 Sumitomo Riko Company Limited Glass-fiber-reinforced thermoplastic resin molding product, and production method therefor
US20210032437A1 (en) * 2018-04-13 2021-02-04 Basf Se Flame-retardant thermoplastic molding composition
WO2020212186A1 (fr) 2019-04-15 2020-10-22 Lanxess Deutschland Gmbh Procédé pour le recyclage de matières plastiques renforcées de fibres de verre
US20220380577A1 (en) * 2020-02-06 2022-12-01 Nitto Boseki Co., Ltd. Glass-fiber-reinforced resin composition and molded glass-fiber-reinforced resin article
WO2023112013A2 (fr) 2022-09-09 2023-06-22 Basf Se Équilibrage d'attributs environnementaux dans des réseaux de production chimique

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