MASTERBATCH CONTAINING SOLICIUM COPPER, POLYMER MATERIAL COMPREHENSIVE THE MASTERBATCH, MOLDED BODY FORMED FROM THE MASTERBATCH OR THE POLYMER MATERIAL AND METHOD FOR MANUFACTURING THE MASTERBATCH
Patent Information
- Application Number
- DE502019012586
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-10-16
- Publication Date
- 2024-12-19
- Estimated Expiration
- 2039-10-16
AI Technical Summary
Existing masterbatches face challenges in incorporating high concentrations of conductive carbon black due to compatibility issues and segregation phenomena, limiting their use in polymer materials for efficient production of conductive plastic moldings.
A masterbatch comprising a thermoplastic elastomer based on a styrene block copolymer, conductive carbon black, graphene, or carbon nanotubes, and paraffinic/naphthenic oils, processed to achieve high BET surface area and efficient dispersion, allowing for the incorporation of large amounts of conductive carbon black without agglomeration.
Enables the reliable and economical introduction of high concentrations of conductive carbon black into polymer materials, ensuring homogeneous distribution and enhanced electrical conductivity in the resulting polymer materials and shaped bodies.
Description
[0001] The present invention relates to a masterbatch containing conductive carbon black, graphene, fullerenes, and / or carbon nanotubes. Furthermore, the invention relates to a polymer material comprising this masterbatch and to a molded article formed from the masterbatch or the polymer material. Finally, the invention relates to a process for producing the masterbatch.
[0002] Masterbatches are regularly used for application-specific modification, particularly for the coloring of plastics. Masterbatches are polymer-bound additive concentrates. The advantage of such masterbatches is that they usually only need to be added to a polymer material in very small quantities to achieve the desired color or functional modification. These quantities are often in the range of 0.5 to 5 percent by weight. Basically, two classification systems can be used to classify masterbatches. Firstly, masterbatches can be divided into color, additive, and combination masterbatches. This classification is function-oriented. Secondly, masterbatches can be divided into universal and polymer-specific masterbatches based on the polymer matrix material into which they are mixed.Due to compatibility issues resulting from the partial incompatibility of the polymers used for the masterbatch on the one hand and the polymer matrix material on the other, which result in demixing phenomena and dispersion errors, universal masterbatches remain problematic for many applications, even though universal masterbatches would certainly offer considerable rationalization potential from a storage and logistics perspective. The successful use of masterbatches is also due in particular to the fact that solid-based additives can be completely or almost completely dispersed in masterbatch preparations. This means that dispersive mixing to break up and divide agglomerates and aggregates is hardly necessary in the production of plastic materials.Accordingly, no additional dispersing agents are generally required when mixing masterbatches into polymer matrix materials. Masterbatches are generally available in the form of granules. Masterbatches with free-flowing and dust-free granules are particularly easy to handle.
[0003] Masterbatches are generally produced using a single-stage or two-stage process. In single-stage production, all raw materials are initially prepared and extruded. In the two-stage variant, so-called monoconcentrates are first produced, which are then mixed again, optionally with additives, and extruded. To produce masterbatches economically, state-of-the-art continuous extrusion and kneading units are used. The homogeneity of the color and the pigments in the masterbatch regularly depends on the flow behavior achieved in the melt, how well the macromolecules can wet the pigments and / or fillers, and how well the pigments and / or fillers are distributed in the matrix. As a result, it is often not possible, or only to an insufficient extent, to incorporate pigments and / or fillers into a masterbatch while maintaining homogeneous mixing.For this reason, dispersing agents are used in masterbatch production. Nevertheless, the maximum pigment / filler concentrations are still limited. This runs counter to the general desire to produce masterbatches with very high concentrations of pigments or functional additives. For example, pigments produced by dry calcination can usually only be incorporated into a masterbatch with high energy input and usually only incompletely. These are also referred to as dispersible pigments.
[0004] In this context, the incorporation of large amounts of carbon black, in particular conductive carbon black, into masterbatch materials has often proven problematic. However, masterbatches containing conductive carbon black would be extremely advantageous for producing conductive plastic moldings in a particularly efficient manner. To date, very specifically tailored solutions have been known from the prior art. For example, EP 111 287 A2 describes carbon black-containing electrically conductive and non-crosslinkable molding compositions based on thermoplastics, which are said to lead to moldings with a surface resistance of at most 108 ohms when electrically conductive and non-crosslinkable molding compositions based on thermoplastics and carbon black are used, consisting essentially of 15 to 75 wt.-parts of chlorinated polyethylene with an average molecular weight of 10,000 to 100,000 and a chlorine content of 20 to 50 wt.%, based on the weight of the chlorinated polyethylene, 10 to 20 parts by weight of polyethylene with a density of 0.940 to 0.965 g per cm3 and a melt index of 0.1 to 60 g per 10 min at 190 °C and 5 kp load and / or polypropylene with a density of 0.900 to 0.915 g per cm3 and a melt index of 0.5 to 30 g per 10 min at 190 °C and 5 kp load, 10 to 70 parts by weight of a filler selected from the group consisting of aluminum hydroxide, barium sulfate, calcium carbonate, magnesium silicate and titanium dioxide with an average particle diameter of 0.5 to 15 µm and 10 to 25, preferably 15 to 20 parts by weight, carbon black having a specific surface area of 100 to 400 m 2< per g and an average particle diameter of 10 to 80 µm and / or 4 to 10 parts by weight.-parts of carbon black with a specific surface area of 700 to 1500 m 2< per g and an average particle diameter of 10 to 80 µm.
[0005] US 2003 / 0116757 A1 relates to a resin composition comprising a polyamide, a polyphenylene ether, an impact modifier, and a carbon-type filler for electrically conductive use, wherein the filler is present in the polyphenylene ether phase. These resin compositions are said to exhibit excellent electrical conductivity and flowability, as well as an excellent balance between the coefficient of linear expansion and impact strength.
[0006] US 2011 / 112219 A1 deals with thermoplastic elastomer blends containing at least one thermoplastic elastomer (excluding a thermoplastic polyurethane) and at least one filler selected from the group consisting of precipitated silica and carbon black. These thermoplastic elastomer blends are said to have isotropic mechanical properties, or their mechanical properties such as tensile strength and elongation at break are said to be identical or nearly identical in the longitudinal and transverse directions.
[0007] US 2004 / 0082729 A1 addresses a conductive masterbatch comprising a polyamide and conductive carbon black, wherein the conductive carbon black is in the form of agglomerated particles with a major axis of 20 to 100 µm, the number of these agglomerated particles being 1 to 100, as determined under an optical microscope with respect to an area of 3 mm². The masterbatch of US 2004 / 0082729 A1 is said to provide materials with high heat resistance, high impact strength, and sufficient conductivity for electrostatic coatings.
[0008] It is therefore desirable to find masterbatches into which high concentrations of carbon black can be introduced, less dependent on the underlying polymer. Therefore, the object of the present invention was to provide a process for producing masterbatches or masterbatches obtained by this process that no longer suffer from the disadvantages of the prior art and that, in particular, allow the unproblematic introduction of large amounts of carbon black, in particular conductive carbon black, into a wide variety of polymer materials. In particular, the object of the present invention was also to enable economical and reliable access to masterbatches that have high concentrations of carbon black, in particular conductive carbon black.
[0009] Accordingly, a masterbatch was found containing or formed from a) at least one thermoplastic elastomer based on a styrene block copolymer, b) 12 to 30 wt.%, in particular more than 20 wt.%, based on the total weight of the masterbatch, of conductive carbon black, graphene, fullerenes and / or carbon nanotubes and c) one or more paraffinic and / or naphthenic oils, and d) optionally filler and / or colorant, in particular pigments, obtained by i) mixing component c) with, in particular a part, of component b) and optionally component d) to form a suspension, ii) mixing the suspension according to i) with component a), in particular to form a powdery mass, iii) optionally mixing the composition according to ii) with a further, in particular the remaining, part of component b), in particular to form a powdery or pasty mass, and iv) extruding the composition according to ii) or iii), in particular to form granules, wherein the conductive carbon black, graphene, fullerenes and / or carbon nanotubes (component b)) have a BET surface area, determined according to ASTM D-6556-19, of 400 or greater than 400 m 2 / g.
[0010] Preferred thermoplastic elastomers based on styrene block copolymers are styrene-ethylene-butylene-styrene block copolymers (SEBS), styrene / butadiene-styrene block copolymers (SBS), styrene-ethylene / propylene-styrene block copolymers (SEPS), styrene-isoprene-styrene block copolymers (SIS), styrene / ethylene-ethylene-propylene / styrene block copolymers (SEEPS), styrene / butadiene-isoprene / styrene block copolymers (SBIS), crosslinkable styrene-ethylene-propylene-styrene block copolymers, or any blends thereof. SEBS block copolymers are particularly preferred.
[0011] In principle, carbon blacks obtained by different manufacturing processes can be selected for the masterbatches according to the invention. Examples of carbon blacks obtainable by different processes include those from the group consisting of furnace black, gas black, channel black, lamp black, thermal black, acetylene black, plasma black, inversion black, Si-containing carbon black, metal-containing carbon black, and arc black.
[0012] The masterbatches according to the invention are also characterized in particular by containing 15 to 28 wt.% and in particular more than 20 wt.%, in each case based on the total weight of the masterbatch, of conductive carbon black, graphene, fullerenes, and / or carbon nanotubes. Conductive carbon black is preferably present in the masterbatches according to the invention in the above-mentioned quantity ranges.
[0013] In particularly advantageous embodiments, the conductive carbon blacks, graphene, fullerenes and / or carbon nanotubes used in the masterbatches according to the invention, particularly preferably conductive carbon blacks, (component b)) have a BET surface area, determined according to ASTM D-6556-19, in the range from greater than 400 to 1750 m 2 / g and in particular in the range from 450 to 1500 m 2 / g. It has surprisingly been found that component b), in particular conductive carbon blacks, can be easily incorporated into the masterbatch according to the invention, even when using the BET surface areas found to be preferred in large amounts, preferably even above 15 percent by weight.
[0014] For the production of the masterbatch according to the invention, preference is given to using conductive carbon blacks which have an average primary particle size D50 in the range from 1 nm to 1,000 nm, preferably in the range from 10 nm to 800 nm and particularly preferably in the range from 50 nm to 500 nm. In the suspensions used in the production of the masterbatches according to the invention in step i), conductive carbon black is preferably present with an average particle size D50 of less than or equal to 50 µm, e.g. also less than or equal to 40 µm. In the said suspension, the primary particles of the conductive carbon black are regularly present as interconnected aggregates or agglomerates. The statement of the average particle size D50 for the conductive carbon blacks present in the suspension therefore relates to the average particle size of the agglomerates or aggregates formed from conductive carbon black primary particles. Agglomerates or aggregates are accordingly formed from a large number of carbon black primary particles adhering to one another.Primary particles within the meaning of the present invention are accordingly those which are not in an agglomerated state but rather as individual particles.
[0015] The particle size D50 can be determined according to DIN ISO 9276-1:2004-09 (Presentation of the results of particle size analyses - Part 1: Graphical representation) and ISO 9276-2:2014-05 (Presentation of the results of particle size analyses - Part 2: Calculation of mean particle sizes / diameters and moments from particle size distributions). Laser scattering particle size distribution analyzers, such as the "LA 950 V2" available from Horiba, can be used to determine the D50 values.
[0016] Such conductive carbon blacks are also particularly suitable for achieving the object underlying the invention with the masterbatches according to the invention, which have an OAN number, determined according to ASTM D-2414, in the range from 20 to 1000 ml / 100g, preferably in the range from 45 to 450 ml / 100g.
[0017] In the masterbatches according to the invention, the paraffinic oil in component c) preferably comprises or represents white oil. Component c) is present in the masterbatches according to the invention, based on the weight of component a), ie based on the amount of thermoplastic elastomer based on styrene block copolymers, preferably in an amount in the range from 5 to 95 wt.% and particularly preferably in the range from 10 to 90 wt.%.
[0018] Component a) of the masterbatches according to the invention is used in expedient embodiments either in powder form or in granular form. Conventional fillers and / or colorants such as pigments can also be used in the masterbatches according to the invention. Preference is given to those masterbatches according to the invention which are essentially free of conventional fillers and pigments, in particular colorants. Masterbatches with which the object underlying the invention can be achieved particularly satisfactorily are preferably essentially free of dispersing aids and / or wetting agents, and in particular essentially free of dispersing aids and wetting agents. It has also proven expedient to use those masterbatches according to the invention which, alternatively or in particular additionally, are essentially free of silicones that are liquid at room temperature, in particular free of any silicones.
[0019] In the preparation of the masterbatches according to the invention, steps i), ii) and / or iii), preferably at least step i), and particularly preferably steps i) and ii) and optionally also iii), are preferably carried out in a discontinuous mixing unit. In this way, the introduction of component b) is achieved particularly efficiently and completely. Kneaders, internal mixers, butterfly mixers, dissolver mixers, screw mixers, paddle mixers, planetary mixers, bead mills, or three-roll attrition mill mixers can be suitably used for these discontinuous mixing units.
[0020] For many applications, it has proven particularly advantageous to extrude the composition obtained in step iii) together with a thermoplastic polymer in step iv) during the production of the masterbatches according to the invention. This thermoplastic polymer is preferably added to the extruder in powder or granule form. Polyesters, polyamides, polystyrene, styrene copolymers, polyolefins, thermoplastic polyurethanes, thermoplastic polyurea copolymers, or any mixtures thereof are preferably used as the thermoplastic polymer that can be added to the thermoplastic elastomer.
[0021] The thermoplastic polymer that can be used for the masterbatches according to the invention is preferably a so-called raw polymer. A raw polymer is usually an untreated plastic material, i.e. a plastic material that does not yet contain any fillers, colorants, e.g. pigments, additives and the like. Suitable thermoplastic polymers, in particular raw polymers, can be selected from the group consisting of polyolefins, in particular polypropylene, polyethylene and / or ethylene / propylene copolymers, polyamides, polycarbonates, polybutylene, polyisobutylene, polymethyl methacrylates, polymethacrylmethylimides, polyoxymethylene, polyphenylene ethers, polystyrene, polytetrafluoroethylene, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, polyesters, in particular polyethylene terephthalate and / or polybutylene terephthalate and / or thermoplastic polyester elastomers, polyurethanes,Ethylene-tetrafluoroethylene copolymers, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, styrene copolymers, in particular selected from the group consisting of acrylonitrile-butadiene-styrene copolymers, acrylate-styrene-acrylonitrile copolymers, methyl methacrylate-acrylonitrile-butadiene-styrene copolymers, methacrylate-butadiene-styrene copolymers, styrene-acrylonitrile copolymers, styrene-butadiene copolymers and styrene-maleic anhydride copolymers, and any mixtures thereof.
[0022] The object underlying the invention is further achieved by a polymer material comprising at least one masterbatch according to the invention and at least one matrix polymer. The masterbatch is preferably present as a minor amount, and the matrix polymer is present in a major amount. Thermoplastic polymers are preferably used for the matrix polymer. Additionally or preferably alternatively, thermoplastic elastomers, elastomers, thermosets, or mixtures thereof can also be used for the matrix polymer.
[0023] If thermoplastic matrix polymers are used for the polymer material according to the invention, which is regularly preferred, these are preferably selected from the group consisting of polyolefins, in particular polypropylene, polyethylene and / or ethylene / propylene copolymers, polyamides, polycarbonates, polybutylene, polyisobutylene, polymethyl methacrylates, polymethacrylmethylimides, polyoxymethylene, polyphenylene ethers, polystyrene, polytetrafluoroethylene, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, polyesters, in particular polyethylene terephthalate and / or polybutylene terephthalate and / or thermoplastic polyester elastomers, polyurethanes, acrylonitrile-butadiene-styrene copolymers, acrylic ester-styrene-acrylonitrile copolymers, ethylene-tetrafluoroethylene copolymers, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, methyl methacrylate-acrylonitrile- Butadiene-styrene copolymers, methacrylate-butadiene-styrene copolymers,Styrene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-maleic anhydride copolymers and any mixtures thereof.
[0024] For many applications, it has proven advantageous for the polymer material according to the invention to contain 10 to 100 wt. %, preferably 15 to 90 wt. %, particularly preferably 20 to 80 wt. %, and in particular 30 to 70 wt. % of masterbatch and 0 to 90 wt. %, preferably 10 to 85 wt. %, particularly preferably 20 to 80 wt. % and in particular 30 to 70 wt. % of matrix polymer, in particular thermoplastic matrix polymer. Accordingly, in one embodiment, the polymer material can also be formed entirely from the masterbatch according to the invention. This regularly leads to materials or molded bodies with very pronounced electrical conductivity.
[0025] The molded articles according to the invention can be obtained from the described components, for example, by injection molding, extrusion, compression molding, roll rotation, deep drawing, vacuum forming, rotational molding, laser sintering, fused deposition modeling (FDM), granulation and / or casting of the polymer material.
[0026] With the masterbatches according to the invention, it is also possible in particular to obtain those shaped bodies according to the invention which have a specific volume resistance in the range from 0.05 to 100 Ohm*cm, preferably in the range from 0.1 to 10 Ohm*cm, in each case determined according to DIN EN ISO 3915, and which additionally or alternatively have a surface resistance of less than 50 Ohm, preferably less than 5 Ohm, determined according to DIN EN ISO 3915.
[0027] The polymer materials according to the invention can be obtained in particular by mixing at least one polymeric matrix material with the masterbatches obtainable by the process according to the invention, each in a molten state, and cooling the mixture.
[0028] The process according to the invention regularly makes it possible to reliably obtain masterbatches which, regardless of the selected concentration, can be very well incorporated into polymer matrix materials to form the polymer materials according to the invention, without the conductive carbon black clumping or inhomogeneities occurring in the compounded polymer materials.
[0029] The polymer materials provided with the masterbatches according to the invention are generally characterized by pronounced elasticity, even at low temperatures. The polymer material of the masterbatches according to the invention, as well as the polymer materials according to the invention containing the masterbatches according to the invention, have the advantageous property of absorbing conductive carbon blacks in a homogeneous distribution over a very broad concentration range, especially at very high concentrations, without the formation of agglomerates or aggregates.
[0030] The object underlying the invention is further achieved by a process for producing the masterbatch according to the invention, comprising the steps: i) Mixing the paraffinic and / or naphthenic oil (component c)) with the conductive carbon black, graphene, fullerenes and / or carbon nanotubes, in particular conductive carbon black, (component b)) or a part thereof to form a suspension, ii) Mixing the suspension according to i) with the thermoplastic elastomer (component a)) based on a styrene block copolymer, in particular in powder form, or a part thereof, and optionally with component d) or a part thereof, in particular to form a powdery mass, iii) Optionally mixing the composition according to ii) with a further, in particular the remaining, part of component b), and / or optionally with a further, in particular the remaining, part of component d), in particular to form a powdery or pasty mass, and iv) Extruding the composition according to ii) or iii), in particular to form granules.
[0031] A particularly homogeneous composition of the components of the masterbatch according to the invention is also obtained in particular by extruding the composition according to iii) in step iv) together with a thermoplastic polymer, in particular a polyester, polystyrene, styrene copolymers or polyolefin, added to the extruder, in particular in powder or granulate form.
[0032] Particularly advantageous are those embodiments in which steps i), ii) and / or iii), in particular steps i) and ii) and optionally also iii), are carried out in a discontinuous mixing unit. In the process according to the invention, the discontinuous mixing unit is preferably selected from the group consisting of kneaders, internal mixers, butterfly mixers, dissolver mixers, screw mixers, paddle mixers, planetary mixers, bead mills, and three-roll attrition mill mixers.
[0033] A particularly high introduction of component b) into the masterbatch is also achieved by carrying out steps i), ii) and / or iii), in particular steps i) and ii) or steps i), ii) and iii), without external heat supply and / or by carrying out step iv) with external heat supply, in particular with an amount of heat which is sufficient to heat the thermoplastic elastomer based on a styrene block copolymer (component a)) and / or the thermoplastic polymer to a temperature above the glass transition and / or melting temperature, in particular above the glass transition temperature and optionally also above the melting temperature, and / or by carrying out steps i), ii) and / or iii), in particular steps i) and ii) or steps i), ii) and iii), with cooling.
[0034] In a preferred embodiment of the process according to the invention, the conductive carbon black present in the suspension obtained according to step i) has an average particle size of less than or equal to 50 µm.
[0035] In a suitable embodiment, the method according to the invention is carried out essentially under exclusion of moisture and / or under protective gas, in particular nitrogen or argon.
[0036] Such a process regularly leads to advantageous results, in which step i) and step ii) and optionally also step iii) take place in an extruder comprising at least one conveying element.
[0037] To promote a smooth process, the extruder can be degassed in step ii), iii) and / or iv), in particular vacuum degassing.
[0038] In order to ensure that the process always runs smoothly, in a preferred embodiment of the process according to the invention, the extruder is sealed in the transition from the gear unit to a screw cylinder, in particular by means of a stuffing box packing.
[0039] Finally, the object underlying the invention is achieved by a kit-of-parts system for the production of the masterbatch according to the invention, comprising Ai) a suspension containing or formed from carbon black, in particular conductive carbon black, graphene, fullerenes and / or carbon nanotubes (component b)) and the one paraffinic and / or naphthenic oil (component c)) or Aii) a mixture of the suspension according to i) and the at least one thermoplastic elastomer based on a styrene block copolymer (component a)), in particular in the form of a powdery mass, and B) the at least one thermoplastic polymer, in particular in powder or granulate form.
[0040] With the masterbatches according to the invention, it is always possible to easily impart electrically dissipative and / or conductive properties to polymer materials produced therefrom. Accordingly, the molded articles according to the invention can be reliably used as so-called electrostatic discharge sensitive (EDS) components.
[0041] The features of the invention disclosed in the foregoing description and claims may be essential both individually and in any combination for the realization of the invention in its various embodiments.
Claims
1. Master batch containing or formed from a) at least one thermoplastic elastomer based on a styrene block copolymer, b) from 12 to 30% by weight, in particular more than 20% by weight, based on the total weight of the master batch, of conductive carbon black, graphene, fullerenes, and / or carbon nanotubes, and c) one or more paraffinic and / or naphthenic oils, as well as d) optionally filler and / or colorant, by i) mixing component c) with, in particular a part of, component b) to form a suspension, ii) mixing the suspension according to i) with component a) as well as optionally component d), iii) optionally mixing the composition according to ii) with a further, in particular the remaining, part of component b), and iv) extruding the composition according to ii) or iii), wherein the conductive carbon black, graphene, fullerenes, and / or carbon nanotubes (component b)) have a BET surface area, determined according to ASTM D-6556-19, of 400 or greater than 400 m2 / g.
2. Master batch according to claim 1, characterized in that the paraffinic oil comprises or is white oil.
3. Master batch according to claim 1 or 2, characterized in that it is free of any silicones.
4. Master batch according to one of the preceding claims, characterized in that the thermoplastic elastomer based on styrene block copolymer is a crude polymer and / or is selected from the group consisting of styrene-ethylene-butylene-styrene block copolymers (SEBS), styrene / butadiene-styrene block copolymers (SBS), styrene-ethylene / propylene-styrene block copolymers (SEPS), styrene-isoprene-styrene block copolymers (SIS), styrene / ethene-ethene-propene / styrene Bblock copolymers (SEEPS), styrene / butadiene-isoprene / styrene block copolymers (SBIS), crosslinkable styrene-ethylene-propylene-styrene block copolymers and any mixtures thereof, in particular comprises or is SEBS block copolymer.
5. Master batch according to one of the preceding claims, characterized in that the carbon black is selected from the group consisting of furnace carbon black, gas carbon black, channel carbon black, flame carbon black, thermal carbon black, acetylene carbon black, plasma carbon black, inversion carbon black, Si-containing carbon black, metal-containing carbon black, arc carbon black and any mixtures thereof.
6. Master batch according to one of the preceding claims, containing from 15 to 28% by weight of conductive carbon black, graphene, fullerenes, and / or carbon nanotubes, particularly preferably conductive carbon black (component b)), based in each case on the total weight of the master batch, and / or from 5 to 95% by weight, preferably from 10 to 90% by weight, of component c), based on the weight of component a).
7. Master batch according to one of the preceding claims, characterized in that the composition according to iii) is extruded in step iv) together with a thermoplastic polymer, in particular selected from the group consisting of polyesters, polyamides, polystyrene, styrene copolymers, polyolefins, thermoplastic polyurethanes, thermoplastic polyurea copolymers, and any mixtures thereof, in particular added to the extruder in powder or granular form.
8. Master batch according to one of the preceding claims, characterized in that the steps i), ii), and / or iii), in particular the steps i) and ii) as well as optionally also iii), are carried out in a discontinuous mixing unit, in particular selected from the group consisting of kneaders, internal mixers, butterfly mixers, dissolver mixers, screw mixers, paddle mixers, planetary mixers, bead mills and three-roll mill mixers.
9. Master batch according to claim 7 or 8, characterized in that the thermoplastic polymer is a crude polymer and / or is selected from the group consisting of polyolefins, in particular polypropylene, polyethylene, and / or ethylene / propylene copolymers, polyamides, polycarbonates, polybutylene, polyisobutylene, polymethyl methacrylates, polymethacrylmethylimides, polyoxymethylene, polyphenylene ethers, polystyrene, polytetrafluoroethylene, polyvinyl acetate, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyvinylidene fluoride, polyesters, in particular polyethylene terephthalate and / or polybutylene terephthalate, and / or thermoplastic polyester elastomers, polyurethanes, ethylene-tetrafluoroethylene copolymers, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, styrene copolymers, in particular selected from the group consisting of acrylonitrile-butadiene-styrene copolymers, acrylic ester-styrene-acrylonitrile copolymers, methyl methacrylate-acrylonitrile-butadiene-styrene copolymers, methacrylate-butadiene-styrene copolymers, styrene-acrylonitrile copolymers, styrene-butadiene copolymers and styrene-maleic anhydride copolymers, and any mixtures thereof.
10. Master batch according to one of the preceding claims, characterized in that conductive carbon black, graphene, fullerenes, and / or carbon nanotubes, in particular conductive carbon black, (component b)) have a BET surface area, determined according to ASTM D-6556-19, in the range from greater than 400 to 1750 m2 / g and in particular in the range from 450 to 1500 m2 / g.
11. Master batch according to one of the preceding claims, characterized in that in the suspension obtained according to step i), the conductive carbon black present therein has an average particle size D50, determined according to DIN ISO 9276-1:2004-09 (representation of the results of particle size analyses - part 1: graphical representation) and ISO 9276-2:2014-05 (representation of the results of particle size analyses - part 2: calculation of average particle sizes / diameters and moments from particle size distributions), of less than or equal to 50 µm, and / or in that the conductive carbon black has an OAN number, determined according to ASTM D-2414, in the range from 20 to 1000 ml / 100 g, preferably in the range from 45 to 450 ml / 100 g.
12. Master batch according to one of the preceding claims, characterized in that component a) is present in powder or granular form.
13. Master batch according to one of the preceding claims, characterized in that the colorants are pigments.
14. Master batch according to one of the preceding claims, characterized in that in step ii) a powdery mass is formed by mixing the suspension according to i) with component a) as well as optionally component d) and / or that in step iii) a powdery or pasty mass is formed by mixing the composition according to ii) with a further, in particular the remaining, part of component b).
15. Master batch according to one of the preceding claims, characterized in that in step iv) a granular material is formed by extruding the composition according to iii),16. Polymer material comprising at least one master batch according to one of the preceding claims, in particular in a minor amount, and at least one, in particular thermoplastic, matrix polymer, in particular in a major amount.
17. Polymer material according to claim 16, characterized in that the matrix polymer is selected from the group consisting of thermoplastics, thermoplastic elastomers, elastomers and thermosets or mixtures thereof.
18. Polymer material according to claim 16 or 17, containing from 10 to 100% by weight, preferably from 15 to 90% by weight, particularly preferably from 20 to 80% by weight, and in particular from 30 to 70% by weight, of master batch, and from 0 to 90% by weight, preferably from 10 to 85% by weight, particularly preferably from 20 to 80% by weight, and in particular from 30 to 70% by weight, of matrix polymer.
19. Shaped article obtained or obtainable by injection molding, extrusion, compression molding, vacuum molding, deep drawing, roll rotation, rotational molding, laser sintering, fused deposition modelling (FDM), granulation and / or casting of the polymer material according to one of claims 16 to 18 or of the master batch according to one of claims 1 to 15.
20. Shaped article according to claim 19, characterized in that it has a specific volume resistance in the range from 0.05 to 1000 ohm*cm, preferably in the range from 0.1 to 100 ohm*cm, determined in each case according to DIN EN ISO 3915, and / or has a surface resistance of less than 50 ohm, preferably less than 5 ohm, determined according to DIN EN ISO 3915.
21. Method for producing a master batch according to one of claims 1 to 15 or a polymer material according to one of claims 16 to 18, comprising the steps: i) mixing the paraffinic and / or naphthenic oil (component c)) with the conductive carbon black, graphene, fullerenes, and / or carbon nanotubes, in particular conductive carbon black, (component b)) or a part thereof to form a suspension, wherein in this suspension the conductive carbon black present therein preferably has an average particle size of less than or equal to 50 µm, ii) mixing the suspension according to i) with the thermoplastic elastomer based on a styrene block copolymer (component a)), in particular present in powder form, or a part thereof as well as optionally the component d) or a part thereof, in particular to form a powdery mass, iii) optionally mixing the composition according to ii) with a further, in particular the remaining, part of component b) and / or with a further, in particular the remaining, part of component d), in particular to form a powdery or pasty mass, and iv) extruding the composition according to ii) or iii), in particular to form a granular material.
22. Method according to claim 21, characterized in that the composition according to iii) is extruded in step iv) together with a thermoplastic polymer, in particular a polyester, polystyrene, styrene copolymers, or polyolefin, in particular added to the extruder in powder or granular form.
23. Method according to one of claims 21 or 22, characterized in that the steps i), ii), and / or iii), in particular the steps i) and ii) as well as optionally also iii), are carried out in a discontinuous mixing unit.
24. Method according to one of claims 21 to 23, characterized in that the steps i), ii), and / or iii), in particular the steps i) and ii) or the steps i), ii), and iii), are carried out without external heat input and / or that the step iv) is carried out with external heat input, in particular with an amount of heat that is sufficient to heat the thermoplastic elastomer based on a styrene block copolymer (component a)) and / or the thermoplastic polymer to a temperature above the glass transition and / or melting temperature and / or that the steps i), ii), and / or iii), in particular the steps i) and ii) or the steps i), ii), and iii), are carried out under cooling.
25. Use of the master batch according to one of claims 1 to 15 for equipping polymer materials with electrically dissipating and / or conductive properties.
26. Use of the shaped articles according to claim 19 or 20 as electrostatic discharge sensitive (EDS) structural bodies.
27. Kit-of-parts system for the production of a master batch according to one of claims 1 to 15, comprising Ai) a suspension containing or formed from conductive carbon black, graphene, fullerenes and / or carbon nanotubes (component b)) and the one paraffinic and / or naphthenic oil (component c)) or Aii) a mixture of the suspension according to i) and the at least one thermoplastic elastomer based on a styrene block copolymer (component a)), in particular in the form of a pulverulent mass; and B) the at least one thermoplastic polymer, in particular present in powder or granular form.
