EP4402203A2 - Kaffeesatz als additiv für kunststoffmaterialien - Google Patents
Kaffeesatz als additiv für kunststoffmaterialienInfo
- Publication number
- EP4402203A2 EP4402203A2 EP22862359.1A EP22862359A EP4402203A2 EP 4402203 A2 EP4402203 A2 EP 4402203A2 EP 22862359 A EP22862359 A EP 22862359A EP 4402203 A2 EP4402203 A2 EP 4402203A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coffee grounds
- divalent
- metal compound
- plastic material
- carboxyl groups
- Prior art date
- 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.)
- Pending
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L99/00—Compositions of natural macromolecular compounds or of derivatives thereof not provided for in groups C08L89/00 - C08L97/00
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/10—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with styrene-butadiene copolymerisation products or other synthetic rubbers or elastomers except polyurethanes
- D06N3/106—Elastomers
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/121—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyesters, polycarbonates, alkyds
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/121—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyesters, polycarbonates, alkyds
- D06N3/123—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyesters, polycarbonates, alkyds with polyesters
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/125—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyamides
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/128—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with silicon polymers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/267—Magnesium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2310/00—Masterbatches
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/10—Particulate form, e.g. powder, granule
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- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
Definitions
- the invention relates to plastic materials which contain coffee grounds as an additive, in particular plastic layers which are suitable for multi-layer composite materials, processes for the production of such plastic materials, coffee grounds premixes suitable therefor and their use.
- Plastic materials usually contain a number of additives necessary to impart certain properties to the material.
- the commonly used additives are usually based on conventional chemical products or primary raw materials. There is a constantly growing interest in replacing such conventional additives with sustainable products and/or waste products that are intended to be recycled in this way.
- powdered coffee grounds are pressed with epoxy adhesives into objects that can be used in the home, such as cups or plates.
- Coffee consists of roasted coffee beans.
- the roasting process oxidizes the coffee bean and increases the formation of carboxyl groups on the surface as well as migratory, usually brown-colored molecules containing carboxyl groups, such as coffee oils.
- the powdered coffee grounds can contain, for example, about 5 to 20% by weight, preferably 10 to 15% by weight, of coffee oils. These coffee oils are soluble in both hydrophilic and hydrophobic media and can be seen as interfacial mediators. When incorporated into a plastic material, these can also migrate into the polymer matrix and finally emerge on the surface of the plastic material, which is also referred to as exudation. Because of the usually brown color of the carboxyl coffee oil and other anionic components such as organic phosphates, this can lead to soiling of the plastic material, which is usually undesirable and can make the use of coffee grounds in such applications impossible.
- the object of the invention was therefore in particular to provide plastic materials in which the sustainability product coffee grounds powder can be added as an additive without the plastic material being soiled by the coffee grounds contained.
- the inventors have surprisingly found that when coffee grounds are included in plastics, migration of brown coffee oil containing carboxyl groups into the plastic matrix and in particular exudation of the coffee oil from the plastic material can be largely or completely prevented by complexing with divalent ions such as calcium or trivalent ions . In this way, soiling of the plastic materials, e.g. the plastic layers, can be avoided.
- the invention thus relates to a plastic material which comprises at least one polymer as a matrix, coffee grounds powder containing carboxyl groups and at least one metal compound containing a divalent or trivalent metal cation, the molar ratio of carboxyl groups in the coffee grounds powder to the divalent or trivalent metal cations of the at least one metal compound being in the range from 1 :0.1 to 1:20.
- the present invention avoids contamination of the polymer matrix by the coffee grounds incorporated by migration of the coffee oils and in particular exudation of these oils by complexing the carboxyl groups contained therein with the divalent or trivalent metal cations can be at least partially or completely prevented .
- the plastic material or the material surface is not soiled by migration of components of the coffee grounds powder, such as coffee oils and roasted products.
- the coffee grounds powder can act not only as a coloring agent or filler, but that the complex or chelate compounds formed from coffee oil and divalent or trivalent metal ions are also suitable, for example, as processing aids and stabilizers.
- calcium, barium and zinc coffee oils can be generated from zinc, barium and calcium salts, the structure of which is very similar to the metal soaps that are commonly used for PVC stabilization, for example.
- Coffee oil-zinc complexes also have an antibacterial effect, as is already known for normal zinc soaps such as zinc laurate and zinc stearate.
- the plastic material according to the invention comprises at least one polymer as a matrix, coffee grounds powder containing carboxyl groups and at least one metal compound containing a divalent or trivalent metal cation.
- a metal compound containing a divalent metal cation is particularly preferred.
- Trivalent metal ions such as Fe 3+ or Al 3+ , eg aluminum soaps, can also be used, but the ionic bond between coffee oil and aluminum ion is significantly weaker (see below).
- the at least one polymer contained in the plastic material forms the matrix of the plastic material.
- the plastic material can contain a polymer or a combination of two or more polymers as matrix.
- the at least one polymer is preferably an organic polymer.
- the at least one polymer is particularly preferably a thermoplastic polymer or a thermoplastic elastomer. Accordingly, it is also preferred that the plastic material is a thermoplastic plastic material.
- the at least one polymer is selected from polyvinyl chloride (PVC), thermoplastic elastomers (TPE), polyurethane, polyolefin, silicone, polylactide, polyamide, polyhydroxybutyric acid, polyester or a combination thereof.
- suitable thermoplastic Elastomers are urethane-based thermoplastic elastomers (TPU), thermoplastic copolyester elastomers (TPE), thermoplastic styrenic block copolymers (TPS) and olefin-based thermoplastic elastomers (TPO), eg polypropylene/ethylene propylene diene rubber (PP/EPDM).
- the at least one polymer is particularly preferably PVC, in particular soft PVC.
- the plastic material is therefore particularly preferably a PVC article, in particular a PVC layer or a PVC film, in particular made of soft PVC.
- the softener in the mixture allows the coffee oils to be quickly distributed in the mass. This results in faster migration of the dyes into the polymer phase.
- Further preferred polymers are TPU and TPE polymers which have a clear expression behavior compared to the coffee oils. The expression behavior here means a migration of these oils to the material surface.
- the proportion of at least one polymer as a matrix in the plastic material can vary within wide ranges, for example it can be in the range from 20 to 80% by weight, preferably 20 to 60% by weight, based on the total weight of the plastic material, e.g PVC, in particular soft PVC.
- the range is, for example, in the range from 20% by weight to 99% by weight, preferably in the range from 20 to 50% by weight.
- the plastic material according to the invention also contains coffee grounds powder containing carboxyl groups.
- the coffee grounds contain, in particular, carboxyl groups in the form of coffee oils containing carboxyl groups.
- the powdered coffee grounds the powdered coffee grounds obtained as a waste product can be used as it is. However, it may be expedient to prepare it beforehand, for example in order to obtain a more uniform starting product with regard to the desired particle size and the desired degree of moisture.
- Coffee grounds powder can, for example, be present in very different finenesses and grain sizes and have different levels of water content.
- the processing to provide a coffee grounds powder with the desired parameters and/or for standardization can include, for example, drying to the desired water content and/or grinding and sieving processes and, if appropriate, division into suitable size fractions. Grinding and, if necessary, classification is usually carried out after drying.
- the water content of the coffee grounds powder can, for example, range from 0 to
- the coffee grounds powder 20% by weight, based on the total weight of the coffee grounds powder. Too high a water content can interfere with the production of the plastic material. On the other hand, some water in the coffee grounds is preferred because it can aid in the dissolution of the metal compound ions, which in turn promotes complex formation between the carboxyl groups in the coffee grounds and the divalent or trivalent metal cations. In this respect it is preferred if the water content of the coffee grounds powder is in the range of 0.5 to 4% by weight, preferably 1 to 2% by weight, based on the total weight of the coffee grounds powder.
- the particle size of the coffee grounds powder can be, for example, in a range from 0.1 to 2000 ⁇ m, preferably from 0.5 to 600 ⁇ m. If required, the coffee grounds powder can also be pulverized to a particle size in the range of 0.1 and 100 ⁇ m.
- the particle size refers to the mean particle size (dso value), based on the volumetric diameter or on the numerical diameter and can be determined, for example, by light scattering or laser diffraction. Monomodal and multimodal particle size distributions are possible.
- the proportion of coffee grounds powder in the plastic material can depend, for example, on the polymer matrix used, the application method and the intended use.
- the content of coffee grounds powder, based on the dry weight of the coffee grounds can be, for example, in the range from 0.01 to 70% by weight, preferably 0.1 to 50% by weight, particularly preferably 2 to 50% by weight, based on the Total weight of the plastic material are. If the plastic material is applied using a coating method, such as a doctor blade or a roll coater, the content of coffee grounds powder, based on the dry weight of the coffee grounds, can be, for example, in the range from 0.01 to 20% by weight, preferably 0. 1 to 12% by weight, particularly preferably 2 to 12% by weight, based on the total weight of the plastic material.
- the content of coffee grounds powder based on the dry weight of the coffee grounds, can be, for example, in the range from 0.1 to 70% by weight, preferably 0.1 to 50% by weight 10 to 50% by weight, based on the total weight of the plastic material.
- the coffee grounds powder can be added as such to the plastic composition for the production of the plastic material. It can also be added in the form of a masterbatch. Details are described below in connection with the method according to the invention.
- the plastic material according to the invention also contains at least one metal compound which contains a divalent or trivalent metal cation, with a divalent metal cation being preferred.
- the metal compound containing a divalent or trivalent metal cation is preferably a metal salt, preferably an inorganic metal salt, the metal hydroxides also being counted among the salts here.
- the metal salt is preferably an alkaline metal salt, particularly an alkaline inorganic metal salt.
- a metal compound containing a divalent or trivalent metal cation or a combination of two or more of such metal compounds may be used. In general, however, the use of such a metal compound is expedient.
- the divalent metal cation of the at least one metal compound is selected, for example, from Ca 2+ , Mg 2+ , Fe 2+ , Ba 2+ , Zn 2+ or a combination thereof, where Ca 2+ , Ba 2+ , Mg 2+ , Zn 2 + or a combination thereof are more preferred. Ca 2+ and/or Mg 2+ , especially Ca 2+ , is particularly preferred.
- the trivalent metal cation of the at least one metal compound is, for example, Fe 3+ or Al 3+ .
- the Counterion to the divalent or trivalent cation, preferably divalent cation, in the metal compound or the metal salt is preferably selected from carbonate, hydroxide, halide such as chloride, bromide or iodide, nitrate, nitrite, perchlorate, chlorate, oxide and sulfate or a combination of that. These counterions have a high affinity for the coffee oils.
- the metal compound containing at least one divalent metal cation is preferably selected from calcium carbonate, calcium hydroxide, magnesium sulfate, barium chloride, calcium carbonate and calcium hydroxide being particularly preferred.
- An example of a metal compound containing at least one trivalent metal cation is an aluminum soap or aluminum hydroxide.
- the low pH of coffee roast products and coffee oils and coffee oil acids allow better binding to alkaline metal salts, e.g.
- the metal compound containing at least one divalent or trivalent metal cation is not used as a filler component but as a functional component for binding the coffee oils or oleic acids as well as roasted products. This can depend on the amount of coffee grounds, the degree of roasting and the type of coffee as well as the accessibility of the migration-sensitive substances in the matrix, determined by the degree of fineness of the particles.
- the metal compound can be present in the plastic material at least partially in a dissociated form.
- the carboxyl groups of the coffee grounds powder or the coffee oil contained therein form a complex compound with the divalent or trivalent metal cations of the at least one metal compound, with the carboxyl groups coordinating to the metal cations.
- the complexes that form can be chelate compounds.
- Trivalent ions such as aluminum-based compounds also have low affinity.
- aluminum hydroxide showed a significantly lower affinity compared to systems based on calcium.
- the proportion of coffee grounds powder containing carboxyl groups and the metal compound containing at least one divalent or trivalent metal cation in the plastic material is such that the molar ratio of carboxyl groups in the coffee grounds powder to the divalent or trivalent metal cations of the at least one metal compound is in the range from 1:0.1 to 1 :20 lies.
- the molar ratio of carboxyl groups in the coffee grounds powder to the divalent or trivalent, preferably divalent, metal cations of the at least one metal compound is preferably in the range from 1:0.5 to 1:10, more preferably 1:0.7 to 1:5, particularly preferably 1 :0.7 to 1:4.
- a divalent metal cation can coordinate to two carboxyl groups.
- the molar ratio of carboxyl groups to the divalent or trivalent metal cations is therefore preferably at least 1:0.5 in order to achieve extensive complexing of the carboxyl groups.
- too high an excess of divalent or trivalent metal cations is not expedient since no further improvement in terms of the degree of complexing can be achieved as a result.
- the plastic material may also contain one or more other additives that are conventional in the art.
- suitable additives are dyes, pigments, matting agents, quantum dots, plasticizers, fillers, flow control agents, defoamers, lubricants, rheology aids, thickeners, crosslinkers, light stabilizers, surface modifiers, stabilizers, reinforcing agents such as fibers, flame retardants, blowing agents, both chemically and physically , surface-active substances and/or biocides.
- suitable further additives depending on the intended use.
- the plastic material can contain at least one plasticizer.
- suitable plasticizers are given below in the description of the process according to the invention.
- the plastic material can be any plastic body.
- the plastic material is a plastic layer, in particular a film-like plastic layer (plastic film) which, for example, can be coated, calendered, cast or extruded for application to a substrate and then optionally crosslinked and/or gelled.
- the terms plastic layer and plastic film are used interchangeably.
- the plastic layer can be used as a monolayer, eg as a film or web.
- the plastic layer is part of a multi-layer composite material in which it is combined with other layers.
- the multi-layer composite material can contain one or more plastic layers according to the invention.
- the plastic material in particular the plastic layer, can be colored, translucent or transparent. With a translucent or transparent plastic material, the proportion of coffee grounds powder in it is relatively low.
- the plastic material, in particular the plastic layer can be a compact or foamed plastic material, with compact or non-foamed materials generally being preferred.
- the plastic layer of the present invention in the form of a plastic film or sheet can be laminated to other layers of the composite, e.g., by gluing or by sequentially coating, drying, gelling, crosslinking, and recoating.
- the plastic layer according to the invention can also be formed during the production of the multi-layer composite material, in which a corresponding plastic composition is applied by a coating process to a substrate, which is usually part of the composite material, and optionally cured to form the plastic layer.
- the plastic material according to the invention in particular in the form of a plastic layer, for example as an independent layer or as a multi-layer composite material containing at least one plastic layer according to the invention, for example artificial leather, a film, a foil, a floor covering or a Be wall covering, eg for indoor and outdoor applications, furniture and applications in the field of vehicles, especially automobiles.
- the plastic material, in particular the plastic layer is particularly suitable for applications in the automotive sector or in industry in general, such as furniture foils, floor coverings, wall coverings, automotive headliner applications, automotive interior applications and/or seat materials. These applications can be in the interior, exterior, mobility or contract sector, such as e.g. hotel chains, cinemas, home applications, airplanes, bus and train, cruise ships (nautical application).
- the plastic layer according to the invention is contained in an artificial leather or is a component of an artificial leather.
- Imitation leather is a multi-layered composite material that in this order comprises a top layer, which is usually colored as a coloring layer, an intermediate layer, which is usually present as a foamed layer to improve the feel, a backing layer and a textile carrier, with the backing layer for connection of the textile carrier is used.
- top layer which can serve as a protective layer, for example.
- the lacquer layer is often transparent or translucent.
- Top layer, intermediate layer and laminating layer are often also referred to as top coat, intermediate coat or laminating coat.
- the plastic layer according to the invention is used in the artificial leather as a cover layer, the plastic layer preferably being a soft PVC layer, i.e. the at least one polymer as matrix comprises or is soft PVC.
- the coffee grounds powder can be used in particular to color the cover layer.
- the top layer can contain other dyes and/or pigments in addition to the coffee grounds powder.
- the multilayer composite material used as artificial leather is usually provided with a leather grain, textile grain or technical surface by a conventional graining process.
- An advantage of the plastic layer according to the invention provided as a cover layer is, for example, that a largely natural-looking leather look can be achieved with the coffee grounds contained.
- the invention thus also relates to a multi-layer composite material which comprises at least one plastic layer according to the invention, the multi-layer composite material preferably being an artificial leather.
- the plastic material according to the invention can preferably be obtained by the method according to the invention described below.
- the invention further relates to a method for producing a plastic material according to the invention as described above, the method comprising the following steps a) Forming a plastic composition by mixing its components, containing at least one polymer as a matrix former, coffee grounds powder containing carboxyl groups and at least one divalent or trivalent metal cation Metal compound include, wherein the molar ratio of carboxyl groups of the coffee grounds powder to the divalent or trivalent metal cations of the at least one metal compound in the range of 1: 0.1 to
- the method can include the following steps:
- a plastic composition is formed by mixing its components.
- the components of the plastic composition include the at least one polymer as a matrix former, the coffee grounds powder containing carboxyl groups and the metal compound containing at least one divalent or trivalent metal cation.
- the plastic composition can also contain one or more other additives as further components.
- the plastic composition may optionally also contain one or more solvents, e.g., water and/or an organic solvent.
- the plastic composition can contain at least one plasticizer.
- the plasticizer can vary depending on the polymer used in the plastic composition and the intended use. Appropriate plasticizers are commercially available and known to those skilled in the art. Examples of suitable plasticizers are phthalic acid esters, esters of aliphatic dicarboxylic acids, epoxidized oils, for example epoxidized soybean oil, citric acid esters, trimellitates, polyesters, phosphoric acid esters, fatty acid esters and terephthalic acid esters.
- the components of the plastic composition can be mixed in mixing devices customary in the art. Mixing can be done at ambient temperature. However, it may be expedient to preheat the mixing device and/or individual components of the plastic composition in order to support the mixing process. The order of addition of the ingredients is arbitrary. When using plasticizers, it is often expedient to initially introduce the plasticizer into the mixing device and then to mix in the other components.
- the coffee grounds powder can be added as such or in the form of a premix to the plastic composition to be produced.
- Use as a premix can be advantageous in order to protect the coffee grounds powder or to improve its shelf life, to achieve better mixing in the plastic composition and/or to obtain a suitable dosage form.
- the coffee grounds may be premixed with a plasticizer and optionally a solvent to form a premix.
- plasticizer e.g., "moist”, paste-like or free-flowing or pumpable premixes can be formed as required.
- suitable plasticizers and solvents are mentioned above.
- the softener prevents the coffee grounds from being degraded by fungi and bacteria as well as other microbial decomposition processes.
- the coffee grounds powder can be mixed with a polymer, for example, pellets or granules preferably being obtained in which the coffee grounds powder is contained in the polymer matrix.
- suitable polymers are the polymers mentioned above as matrix formers for the plastic material.
- the polymer can correspond to the at least one polymer for the plastic material or be different. Thermoplastic polymers or thermoplastic elastomers, eg TPU, are preferred.
- the coffee grounds powder containing carboxyl groups and the metal compound containing at least one divalent or trivalent metal cation are mixed together before addition to the plastic composition, optionally with the further addition of a plasticizer and/or other components, in order to form a coffee grounds premix.
- the coffee grounds premix thus obtained can then be mixed with the other components of the plastic composition to form the plastic composition.
- the coffee grounds premix is explained in detail below.
- a particular advantage of using such a coffee grounds premix is that by premixing the two components and then adding them together instead of adding the two components separately to the plastic composition, a more intimate mixture of coffee grounds powder containing carboxyl groups and the metal compound containing at least one divalent or trivalent metal cation is obtained is, whereby the complexation of carboxyl groups to the divalent or trivalent metal cations is simplified and an increased degree of complexation can be achieved.
- the plastic composition formed is applied to a substrate or brought into the desired shape by a molding process.
- the plastic composition can be applied or shaped by conventional methods, for example by calendering, brushing, spraying, printing, casting or extrusion.
- the plastic composition can be formed into a plastic layer in the form of a plastic film by calendering with a calender, or a plastic film can be produced by using a transfer coating method.
- the applied or molded plastic composition may already have sufficient strength to form the plastic material.
- the applied or shaped plastic composition can optionally be cured in order to form the finished plastic material. Such curing may occur during application or molding of the plastic composition, or thereafter, or partially during application or molding and partially thereafter.
- Such hardening may be mere solidification by drying and/or cooling.
- drying can be promoted by heating the plastic composition.
- Curing through crosslinking reactions in the plastics composition is also possible, for which purpose a suitable crosslinker is generally present in the plastics composition.
- the imitation leather is generally provided with a leather grain in a subsequent step by means of a graining process.
- graining methods can be used, e.g. steel embossing, vacuum embossing or silicone embossing.
- the invention also relates to a coffee grounds premix which can be used in the method according to the invention, as described above.
- the coffee grounds powder used according to the invention relates to roasted products from coffee processing, which are produced as a waste product from coffee production and are therefore present as coffee grounds containing coffee oils and coffee oleic acids.
- the coffee grounds premix according to the invention accordingly comprises coffee grounds powder containing carboxyl groups and at least one metal compound containing a divalent or trivalent metal cation, the molar ratio of carboxyl groups in the coffee grounds powder to the divalent or trivalent metal cations of the at least one metal compound being in the range from 1:0.1 to 1:20 lies. All of the statements made above regarding the coffee grounds powder and the metal compound containing at least one divalent or trivalent metal cation and the molar ratio of carboxyl groups to divalent or trivalent metal cations apply accordingly.
- the molar ratio of carboxyl groups of the coffee grounds powder to the divalent or trivalent metal cations of the at least one metal compound in the coffee grounds premix is preferably in the range from 1:0.5 to 1:10, more preferably 1:0.7 to 1:5 preferably 1:0.7 to 1:4.
- the divalent or trivalent metal cation of the at least one metal compound is selected from Ca 2+ , Mg 2+ , Fe 2+ , Ba 2+ , Zn 2+ , Fe 3+ , Al 3 + or a combination thereof, preferably Ca 2+ , Ba 2+ , Mg 2+ , Zn 2+ or a combination thereof, and/or the at least one metal compound as a counterion is an anion selected from carbonate, hydroxide, halide, eg chloride, bromide or iodide, nitrate, nitrite, perchlorate, chlorate, oxide and sulfate, the at least one metal compound preferably being calcium carbonate or calcium hydroxide.
- Other exemplary compounds are magnesium carbonate or barium chloride.
- An example of a metal compound containing at least one trivalent metal cation is an aluminum soap or aluminum hydroxide.
- the coffee grounds premix can optionally contain one or more other additives, eg at least one plasticizer and/or at least one polymer, preferably at least one plasticizer.
- Such coffee ground powder premixes with at least one plasticizer and/or at least one polymer correspond to the coffee ground powder-containing premixes described above, except that the metal compound containing at least one divalent or trivalent metal cation is additionally present.
- the examples given there for plasticizers and polymers also apply.
- the total amount of coffee grounds powder (dry weight) and the metal compound containing at least one divalent or trivalent metal cation in the coffee grounds premix can be, for example, in the range from 5 to 100% by weight, preferably 25 to 98% by weight, particularly preferably 50 to 98% by weight % based on the total weight of the coffee grounds premix.
- the amount can differ depending on the application, eg by means of a brush or an extruder.
- Much of the plasticizer can also be added via the masterbatch for the final product.
- the percentages of coffee grounds powder and the metal compound containing at least one divalent or trivalent metal cation can also be relatively small overall, for example 5% by weight.
- the total amount of coffee grounds powder (dry weight), the metal compound containing at least one divalent or trivalent metal cation and the at least one softener in the coffee grounds premix can be, for example, in the range from 80 to 100% by weight. , preferably 90 to 100% by weight, based on the total weight of the coffee grounds premix.
- Coffee grounds powder and the metal compound containing at least one divalent or trivalent metal cation and optionally one or more other additives, such as at least one softener, can be mixed in conventional mixing devices to form the coffee grounds premix.
- the carboxyl groups of the coffee grounds powder form a complex compound with the divalent or trivalent metal cation(s) of the at least one metal compound.
- the invention further relates to the use of the coffee grounds premix according to the invention as described above as an additive for a plastic material.
- the coffee grounds premix is particularly useful as a colorant, processing aid, stabilizer and/or filler for a plastic material.
- the coffee grounds premix may also be useful as a bactericide for a plastics material, particularly when the metal compound containing at least one divalent metal cation is a zinc compound.
- the invention further relates to the use of a metal compound containing a divalent or trivalent metal cation in a plastic material comprising at least one polymer as matrix and coffee grounds powder containing carboxyl groups, to avoid soiling of the plastic material or the material surface through migration of components of the coffee grounds powder, e.g. Coffee oils or roasted products, the molar ratio of carboxyl groups of the coffee grounds powder to the divalent or trivalent metal cations of the at least one metal compound being set in the range from 1:0.1 to 1:20.
- the composition of coffee grounds with regard to the proportion of coffee oil and the composition of the coffee oil is quite similar and known within a certain range of variation.
- the composition can be determined by usual methods.
- the proportion of coffee oil can be determined, for example, by extracting it from the coffee grounds. Suitable methods for analyzing the composition of the coffee oil are, for example, head space gas chromatography.
- the proportion of coffee oil in the roasted coffee beans can be between 10-30% by weight, for example.
- the molar proportion of carboxyl groups in the coffee grounds results in particular from the quantity and composition of the coffee oil contained therein.
- the composition of the coffee oil can be, for example, according to the following table. average molecular weight (coffee oil) 275
- the molecular weight of calcium carbonate is 100 g/mol.
- 100g of coffee grounds can contain about 15g of coffee oil.
- a triple proportion of calcium carbonate is used.
- about 8.2 g of calcium carbonate would be added to 100 g of coffee grounds.
- the amount of coffee oil in a coffee grounds can vary depending on the processes and methods of coffee production, e.g. roasting. Furthermore, the brewing temperature and the pressure of the coffee extraction during coffee production, e.g. 60-80 °C or screen printing or cold brew processes, have a significant influence on the coffee oil content in the coffee grounds.
- coffee grounds powder is mixed with calcium carbonate and other additives in accordance with the quantities given in the following table.
- the desired proportion of calcium carbonate can be calculated from the proportion of coffee oil in the coffee grounds powder and the composition of the coffee bean oil (cf. Example 1).
- plastic formulations according to Variant 1 and Variant 2 can be produced from soft PVC according to the table below.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Dispersion Chemistry (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Wood Science & Technology (AREA)
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Abstract
Description
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021210254.9A DE102021210254A1 (de) | 2021-09-16 | 2021-09-16 | Kaffeesatz als Additiv für Kunststoffmaterialien |
| PCT/DE2022/200195 WO2023041124A2 (de) | 2021-09-16 | 2022-08-23 | Kaffeesatz als additiv für kunststoffmaterialien |
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| Publication Number | Publication Date |
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| EP4402203A2 true EP4402203A2 (de) | 2024-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| EP22862359.1A Pending EP4402203A2 (de) | 2021-09-16 | 2022-08-23 | Kaffeesatz als additiv für kunststoffmaterialien |
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| Country | Link |
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| EP (1) | EP4402203A2 (de) |
| DE (1) | DE102021210254A1 (de) |
| WO (1) | WO2023041124A2 (de) |
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| CH719268A1 (de) * | 2021-12-17 | 2023-06-30 | Alpla Werke Alwin Lehner Gmbh & Co Kg | Mehrweg-Kunststoffflasche. |
| DE102024205488A1 (de) | 2024-06-13 | 2025-12-18 | Benecke-Kaliko Aktiengesellschaft | Nachhaltiger Mehrschichtverbund |
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| KR101344471B1 (ko) * | 2012-01-13 | 2013-12-24 | 주식회사 에버그린 | 커피 부산물을 이용한 바이오 플라스틱 및 그 제조방법 |
| KR101627616B1 (ko) * | 2015-01-23 | 2016-06-07 | (주) 케이엠팩 | 트레이용 수지조성물 및 이를 이용하여 제조된 트레이 |
| CN108530777A (zh) * | 2017-03-02 | 2018-09-14 | 洪门压克力有限公司 | 含咖啡渣的复合材料及其制造方法 |
| KR102060243B1 (ko) * | 2018-04-27 | 2019-12-27 | 김정권 | 커피 슬러지 조성의 합성보드를 포함하는 건축용 판상 자재의 제작방법 및 건축용 판상 자재 |
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2021
- 2021-09-16 DE DE102021210254.9A patent/DE102021210254A1/de active Pending
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- 2022-08-23 EP EP22862359.1A patent/EP4402203A2/de active Pending
- 2022-08-23 WO PCT/DE2022/200195 patent/WO2023041124A2/de not_active Ceased
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| Publication number | Publication date |
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| WO2023041124A3 (de) | 2023-06-29 |
| WO2023041124A2 (de) | 2023-03-23 |
| DE102021210254A1 (de) | 2023-03-16 |
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