Classifications

• • 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
  • C08J11/00—Recovery or working-up of waste materials
  • C08J11/04—Recovery or working-up of waste materials of polymers
• • 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
  • C08J11/00—Recovery or working-up of waste materials
  • C08J11/04—Recovery or working-up of waste materials of polymers
  • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
• • 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
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
• • 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
  • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
  • C08J2367/06—Unsaturated polyesters
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
  • Y02W30/00—Technologies for solid waste management
  • Y02W30/50—Reuse, recycling or recovery technologies
  • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

• the invention relates to a particulate filler for polyester resin-based reactive plastics from waste polyester resin-based reactive plastics filled with glass fibres, in particular from the production of glass laminates. Further, the invention relates to a blend of reactive plastic polyester resin containing this filler.
• polyester resin based reactive plastics filled with glass fibre are widely used for the production of automotive parts and components in order to reduce their weight and thus their fuel consumption.
• Reactive plastics are mainly used in applications where products are demanding in terms of elevated temperature, resistance, non-flammability, low shrinkage and require good surface properties.
• Another Chinese patent, CN102432771 relates to a method of recycling unsaturated polyester resin from waste polyester films from the production of unsaturated polyester resin based composites reinforced with glass fibre.
• the main technological scheme of the solution is as follows: 2-methyl-l,3-propylene glycol, waste polyester film and catalyst are added to the reaction vessel for the degradation reaction. Fumaric acid, resinol, diethylene glycol, propylene glycol and a polymerization inhibitor are then added, after which the resulting product is mixed and reacts with monomeric styrene to prepare an unsaturated polyester resin. It is therefore again a use with limited capacity, which is also quite demanding from a technological point of view.
• the subject of Polish patent PL302203 is a method of processing waste from hardened unsaturated polyesters, in particular glass fibre reinforced polyesters.
• the method consists in passing the waste through a methylene chloride extraction process with a weight ratio of methylene chloride to waste of at least 1:1 (preferably 5:1) at room temperature and elevated pressure.
• the mass after extraction is first filtered and then a portion of the methylene chloride is evaporated.
• the post-extraction mass containing at least 20% adsorbed methylene chloride is usable in subsequent continuous mixing of resins as a plasticizer or other component of composites (with a boiling point higher than that of methylene chloride, and which do not react with it).
• the whole is mixed, the solvent is slowly evaporated and then the mixture is subjected to mechanical processing. Again, this is a use with a limited capacity and is technologically and energetically very demanding.
• the subject-matter of Czech utility model No 37113 is a functional particulate filler for thermoplastics, which consists of a pulp of finely ground waste reactive plastic (epoxy polyester or phenol- formaldehyde resin) filled with glass fibres, having a particle size ranging from 0.1 to 1.0 mm. This particle size not only allows sufficient homogenization with the polymer matrix, but also, due to the particle size range and its composition, the particulate filler also acts as a reinforcing (functional) part of the final product.
• a functional particulate filler for thermoplastics which consists of a pulp of finely ground waste reactive plastic (epoxy polyester or phenol- formaldehyde resin) filled with glass fibres, having a particle size ranging from 0.1 to 1.0 mm. This particle size not only allows sufficient homogenization with the polymer matrix, but also, due to the particle size range and its composition, the particulate filler also acts as a reinforcing (functional) part of the final product.
• the utility model further discloses polymer compositions comprising mentioned functional particulate filler in a thermoplastic polymer matrix based on polypropylene, high-density polyethylene, acrylonitrile-butadiene- styrene copolymer or polyvinyl chloride.
• a polypropylene-based compatibilizer can be used here.
• the problem is that the use of this functional particulate filler is limited to thermoplastic polymer matrices only. It is not practically applicable for polyester resin-based reactive plastics due to the particle size range.
• the particulate filler for polyester resin based reactive plastics contributes to a large extent.
• the essence of the solution is that this particulate filler is made up of a fraction of finely ground glass fibre- filled polyester resin-based reactive plastic waste, which has a particle size ranging from 0.005 to 0.1 mm. It is advantageous if the fraction of the finely ground reactive plastic waste pulp based on polyester resin is a fraction of the reactive plastic pulp based on unsaturated polyester resin filled with glass fibre.
• the essence of the polyester resin reactive plastic blend according to the technical solution comprising a particulate filler is that in a polymer matrix based on a polyester resin, in particular an unsaturated polyester resin, contains 15 to 50% by weight of a particulate filler consisting of a fraction of the pulp of finely ground waste reactive plastic of the same composition as the polymer matrix, filled with glass fibre, where the particle size of the pulp ranges from 0.005 to 0.1 mm.
• the solution according to the presented technical solution of waste recycling on the basis of polyester resin filled with glass fibre is advantageous from the technological, energy and therefore economic point of view.
• the pulp of reactive plastic waste as a functional particulate filler for thermoplastics
• there is a difference in principle which lies in the identified need to use a pulp fraction of finely ground reactive plastic waste based on polyester resin filled with glass fibre, which has a particle size in the range from 0.005 to 0.1 mm.
• the 0.1 to 1 mm particle size fraction, which is applied as a particle functional filler for thermoplastics is not applicable in a polymer matrix based on unsaturated polyester resin due to unsatisfactory technological and utility properties of the prepared blend of reactive plastic polyester resin.
• the particulate filler for reactive plastics in the exemplary embodiment consists of a pulp fraction of finely ground waste reactive plastic (Menzolit BMC 3100, BMC TETRADUR TD 492/2) based on an unsaturated glass fibre filled polyester resin having a particle size in the range from 0.005 to 0.1 mm.
• the blend of reactive plastic polyester resin comprises, in a polymer matrix based on unsaturated polyester resin, 15% by weight of a particulate filler comprising a fraction by weight of finely ground reactive plastic waste of the same composition as the polymer matrix, filled with glass fibre, wherein the pulp particle size ranges from 0.005 to 0.1 mm.
• this particulate filler was used in the mixture of unsaturated polyester resin menzolite BMC 3100, where it replaced the originally contained mineral filler.
• This blend is suitable for the production of automotive headlight visor parts using BMC (Bulk Moulding Compound) technology, where a polymer composite material is prepared by mixing a glass fibre reinforcement with a polyester resin and then processed by pressing or injection moulding.
• BMC Bit Moulding Compound
• the particulate filler for reactive plastics in the exemplary embodiment consists of a pulp fraction of finely ground waste reactive plastic (menzolite BMC 3100) based on an unsaturated glass fibre filled polyester resin having a particle size in the range from 0.005 to 0.1 mm
• the blend of reactive plastic polyester resin comprises, in a polymer matrix based on unsaturated polyester resin, 50% by weight of a particulate filler comprising a fraction by weight of finely ground reactive plastic waste of the same composition as the polymer matrix, filled with glass fibre, wherein the pulp particle size ranges from 0.005 to 0.1 mm.
• this particulate filler was used in the mixture of unsaturated polyester resin menzolite BMC 3100, where it replaced the originally contained mineral filler.
• This blend is suitable for the production of automotive non- visual headlight parts using BMC (Bulk Moulding Compound) technology, where a polymer composite material is prepared by mixing a glass fibre reinforcement with a polyester resin and then processed by pressing or injection moulding.
• BMC Bit Moulding Compound
• a particulate filler based on a pulp of finely ground waste of reactive plastic based on unsaturated glass fibre filled polyester resin, particularly from the manufacture of laminate composites, is usable as a filler for reactive plastic polyester resin blends.
• the blend of unsaturated polyester resin for BMC technology where it successfully replaced the mineral filler (talc, calcium carbonate) originally included.

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• Chemical & Material Sciences (AREA)
• Polymers & Plastics (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Organic Chemistry (AREA)
• Sustainable Development (AREA)
• Life Sciences & Earth Sciences (AREA)
• Inorganic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Materials Engineering (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
• Macromonomer-Based Addition Polymer (AREA)

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Publications (1)

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Citations (4)

• 2023
  • 2023-12-13 CZ CZ2023-41623U patent/CZ37714U1/cs active IP Right Grant
• 2024
  • 2024-05-28 WO PCT/CZ2024/050037 patent/WO2025124623A1/en active Pending
  • 2024-12-10 DE DE202024107160.3U patent/DE202024107160U1/de active Active

Patent Citations (4)

Non-Patent Citations (1)

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