DE102020211957A1 - composite part - Google Patents

Abstract

Due to the presence of volatile components from the synthesis processes and from the formulation with additives during processing and use, many plastics have an odor that is perceived as unpleasant or undesirable in selected areas of application, such as in the interior of vehicles or rooms. This applies in particular to plastic recyclates, which contain a particularly high proportion of odor-causing substances due to the aging process and contamination from the first use, e.g. as packaging material for food, or can form during normal processing through thermal processes. Other examples of odor-causing ingredients in plastics are degradation products from formulation components or fillers or fibers from natural materials. In order to expand the possible uses of the odorous plastics described and their markets, there is therefore a desire to develop methods which bring about a significant reduction in the perceptible odor.

Description

Due to the presence of volatile components from the synthesis processes and from the formulation with additives during processing and use, many plastics have an odor that is perceived as unpleasant or undesirable in selected areas of use, such as in the interior of vehicles or rooms. This applies in particular to plastic recyclates, which contain a particularly high proportion of odour-causing substances due to the aging process and contamination from the first use, e.g. as packaging material for food, or can form during normal processing through thermal processes. Other examples of odor-causing ingredients in plastics are degradation products from formulation components or fillers or fibers from natural materials. In order to expand the possible uses of the odorous plastics described and their markets, there is therefore a desire to develop methods which bring about a significant reduction in the perceptible odor.

In principle, methods for reducing the odor of plastics are known, which include both process engineering measures and the addition of suitable additives. Known processing methods include, for example, the removal of volatile substances during processing by vacuum degassing and, if necessary, the addition of water or water-forming substances as entraining agents (often referred to as "stripping") in order to increase the degassing effect (e.g DE10335486, 2004 , HG Schrader, EP 1921108, 2008 , HG Schrader, EP2209553 , BYK-Chemie GmbH). Additives that are added to plastics to reduce odors are, for example, compounds based on inorganic sheet silicates (e.g US4795482 , Union Carbide Corp., UK 10062558 , Degussa, WO2017060171 , I-merys Talc Europe) or reactive organic compounds (R. Pfaendner, Pol. Degr. Stab. (2006) 91, pp. 2249 - 2256, EP 1250938, 2002 , Goldschmidt Chemical Corporation, JP S62-086031 , Dainisicheika Color Chem.).

However, the known methods for reducing odors do not meet all requirements, in particular they lead to a slowdown in the process and/or a high energy input ("entrainer") or to high additive concentrations that are required, which either affect the plastic properties and/or are uneconomical.

The object of the present invention was therefore to provide a composite component and a method for its production which enables reliable odor reduction of plastic parts, is advantageous in terms of the process and is economically viable.

This object is achieved with the features of patent claim 1 with regard to a composite component, with the features of patent claim 19 with regard to a method for producing the composite component according to the invention. The respective dependent patent claims represent advantageous developments.

The invention thus relates to a composite component comprising a core and at least one layer enclosing the core, comprising a first composite containing or consisting of at least one thermoplastic polymer and at least one odor-reducing additive.

Composite components are obtained which have a reduced odor or lower amounts of volatile components, which opens up broader areas of application. At the same time, economic advantages can be obtained through the use of small amounts of additives.

An odor-reducing additive is understood according to the invention as meaning in particular an additive which, when stored at 80° C., improves the odor by at least two values on a scale from 1 to 10 compared to a pure core material without the corresponding additive, with a value of 1 being one imperceptible smell and a value of 10 corresponds to a very strong smell.

The odors are determined and evaluated as described in Kunststoffe 8/2018, p. 81 ff.

The measurement given above can be carried out, for example, as follows: 3% by weight of the odor-reducing additive is introduced into the layer enclosing the core, which is made 220-350 μm thick at the thinnest point measured. The samples are stored for 8 weeks at 80°C in metal-coated bags. At intervals of 1 week, the smell of the plates was checked by 3 people are evaluated in relation to the release of the recyclate smell - the mean value of the 3 evaluations is formed here - and assigned to the scale.

The necessary amount of odor reducing additive used depends on the chemical structure, the layer thickness of the layer enclosing the core, the proportion of volatile odor-producing components in the core, the ratio of core to enclosing layer and the desired odor improvement.

For example, the layer thickness of the layer enclosing the core can be 50 μm to 1 cm, preferably 100 μm to 2 mm, it being essential that the composite is completely enclosed. Furthermore, it is possible that due to the molded part construction, the layer thickness of the enclosing layer can have a different thickness. For economic reasons, the enclosing layer is chosen to be as thin as possible in relation to the core.

The dimensions of the core can be, for example, 100 µm, e.g., in the form of a foil, up to 1 dm, e.g., in the form of a profile, depending on the application.

In the case of a core material with a strong odor and a large layer thickness, a thicker layer enclosing the core is preferably selected, while a correspondingly thin enclosing layer is selected in the case of small dimensions of the core, such as a film.

A high concentration of additives in the enclosing layer is preferably selected for a core that is more odor-prone.

For example, it has been shown that a core made of a highly odor-prone recyclate from packaging applications with a thickness of 3 mm and an enclosing layer with a minimum layer thickness of 220 µm at an additive concentration of 3% enables the odor to be improved by 8 levels.

A preferred embodiment provides that at least one odor-reducing additive is selected from the group consisting of zeolites; hydrotalcites; alkali aluminocarbonates (dawsonite); silicates; organic odor reducing additives, and mixtures and combinations thereof.

n

die Ladung des Kations M;

M

ein Element der ersten oder zweiten Hauptgruppe, insbesondere Li, Na, K, Mg, Ca, Sr oder Ba;

y:x

einen Wert von 0,8 bis 15, bevorzugt von 0,8 bis 1,2, und

w

eine Zahl von 0 bis 300, bevorzugt von 0,5 bis 5

ist, insbesondere die Zeolithe ausgewählt sind aus der Gruppe bestehend aus Natriumalumosilikaten der Formeln Na_i2Al_i2Si_i2C>₄₈-" 27 H₂O [Zeolith A], Na₆Al₆Si₅O₂₄ · 2 NaX · 7,5 H₂O (X= OH, Halogen, ClO₄ [Sodalith]); Na₆Al₆Si₃₀O₇₂ · 24 H₂O; Na₈Al₈Si₄₀O₉₅ · 24 H₂O; Na₁₆Al₁₆Si₂₄O₈₀· 16 H₂O; Na₁₆Al₁₆Si₃₂O₉₆ ·16 H₂O; Na₅₆Al₅₆Si₁₃₆O₃₈₄ · 250 H₂O [Zeolith Y], Na₈₆Al_s6Si₁₀₆O₃₈₄ · 264 H₂O [Zeolith X]; sowie Zeolithe bei denen die Na-Atome der zuvor genannten Zeolithe teilweise bzw. vollständig durch Li-, K-, Mg-, Ca-, Sr- oder Zn-Atome ausgetauscht sind, wie insbesondere (Na,K)₁₀Al₁₀Si₂₂O₆₄ · 20 H₂O, Ca_4,5Na₃[(AlO₂)₁₂(SiO₂)₁₂ · 30 H₂O und K₉Na₃[(AlO₂)₁₂SiO₂)₁₂] · 27 H₂O;Preferred zeolites are selected, for example, from the group consisting of compounds according to the general formula M _x/n [(AlO ₂ ] _x (SiO ₂ ) _y w H ₂ O whereby

n

the charge of the cation M;

M

an element of the first or second main group, in particular Li, Na, K, Mg, Ca, Sr or Ba;

y:x

a value from 0.8 to 15, preferably from 0.8 to 1.2, and

w

a number from 0 to 300, preferably from 0.5 to 5

in particular the zeolites are selected from the group consisting of sodium aluminosilicates of the formulas Na _i2 Al _i2 Si _i2 C> ₄₈ -" 27 H ₂ O [zeolite A], Na ₆ Al ₆ Si ₅ O ₂₄ · 2 NaX · 7.5 H ₂ O (X= OH, halogen, ClO ₄ [sodalite]), Na ₆ Al ₆ Si ₃₀ O ₇₂ x 24 H ₂ O, Na ₈ Al ₈ Si ₄₀ O ₉₅ x 24 H ₂ O, Na ₁₆ Al ₁₆ Si ₂₄ O ₈₀ 16 H ₂ O;Na ₁₆ Al ₁₆ Si ₃₂ O ₉₆ 16 H ₂ O;Na ₅₆ Al ₅₆ Si ₁₃₆ O ₃₈₄ 250 H ₂ O [zeolite Y], Na ₈₆ Al _s6 Si ₁₀₆ O ₃₈₄ 264 H ₂ O [zeolite X]; and zeolites in which the Na atoms of the aforementioned zeolites are partially or completely replaced by Li, K, Mg, Ca, Sr or Zn atoms, such as in particular ( Na,K) ₁₀ Al ₁₀ Si ₂₂ O ₆₄ 20 H ₂ O, Ca _4.5 Na ₃ [(AlO ₂ ) ₁₂ (SiO ₂ ) ₁₂ 30 H ₂ O and K ₉ Na ₃ [(AlO ₂ ) ₁₂ SiO ₂ ) ₁₂ ] · 27 H ₂ O;

M2+

eines oder mehrere der Metalle aus der Gruppe Mg, Ca, Sr oder Zn,

M3+

AI oder B,

A

ein Anion mit der Valenz n, bevorzugt OH^-, HCO^3-, CH₃COO^-, C₆H₅COO, CO₃ ^2-, SO₄ ^2-, HPO₄ ^2-,

n

eine Zahl von 1-2 ist,

0 < x < 0,5 ist, und

m

eine Zahl von 0-20 ist,

insbesondere die Hydrotalcite ausgewählt sind aus der Gruppe bestehend aus Al₂O₃ · 6 MgO · CO₂ · 12 H₂O, Mg_4,5Al₂(OH)₁₃ · CO₃ · 3,5 H₂O, 4 MgO · AlO₃ · CO₂ · 9 H₂O, 4 MgO · Al₂O₃ · CO₂ · 6 H₂O, ZnO · 3 MgO · Al₂O₃ . CO₂ · 8-9 H₂O und ZnO · 3 MgO · Al₂O₃ . CO₂ · 5-6 H₂O;Exemplary hydrotalcites that can be used for the purposes of the present invention are selected in particular from the group consisting of compounds according to the general formula (M ²⁺ ) _1-x (M ³⁺ ) _x (OH) ₂ (A ^n- ) _x/n m H ₂ O whereby

M2+

one or more of the metals from the group Mg, Ca, Sr or Zn,

M3+

AI or B,

A

an anion with the valence n, preferably OH ^- , HCO ^3- , CH ₃ COO ^- , C ₆ H ₅ COO, CO ₃ ^2- , SO ₄ ^2- , HPO ₄ ^2- ,

n

is a number from 1-2,

0 < x < 0.5, and

m

is a number from 0-20,

in particular the hydrotalcites are selected from the group consisting of Al ₂ O ₃ 6 MgO CO ₂ 12 H ₂ O, Mg _4.5 Al ₂ (OH) ₁₃ CO ₃ 3.5 H ₂ O, 4 MgO _{AlO3.CO2.9H2O , 4MgO.Al2O3.CO2.6H2O , ZnO.3MgO.Al2O3 . _ _ _ CO2.8-9H2O and ZnO.3MgO.Al2O3 . CO2} · 5-6 _H2 O;

M

ein Element, ausgewählt aus der Gruppe bestehend aus H, Li, Na, K, Mg_1/2, Ca_1/2, Sr_1/2, Zn_1/2;

Z

ein Substituent, ausgewählt aus der Gruppe bestehend aus CO₂, SO₂, (Cl₂O₇)_1/2, B₄O₆, S₂O₂ (Thiosulfat) und/oder C₂O₂ (Oxalat);

m

wenn M Mg_1/2, Ca_1/2, ist, eine Zahl zwischen 1 und 2, in allen anderen Fällen eine Zahl zwischen 1 und 3;

n

eine Zahl zwischen 1 und 4;

o

eine Zahl zwischen 2 und 4; und

p

eine Zahl zwischen 0 und 30

ist, und bevorzugt die Alkalialumocarbonate (Dawsonite) ausgewählt sind aus der Gruppe bestehend aus Kaliumalumocarbonat {(K₂₀)·(Al₂O₃)·(CO₂)₂ · 2 H₂O}, Natriumalumothiosulfat {(Na_2o)·(Al₂0₃)_·(S₂0₂)_2·2 H₂O}, Kaliumalumosulfit {(K₂₀)·(Al₂O₃)·(SO₂)₂·2 H₂O}, Calciumalumooxalat {(CaO)·(Al₂O₃)·(C₂O₂)₂·5 H₂O}, Magnesiumalumotetraborat {(MgO)·(Al₂O₃)·(B₄O₆)₂·5 H₂O}, Natriumalumodihydroxycarbonat, Kaliumalumodihydroxycarbonat sowie natürlich vorkommende Alkalialumocarbonat-Mineralien, wie z.B. Indigirit, Tunisit, Alumohydrocalcit oder Strontiodresserit;Preferred alkali metal aluminocarbonates (dawsonite) are in particular selected from the group consisting of compounds according to the general formula {( _M2O ) _{m ( Al2O3 ) ZopH2O} } whereby

M

an element selected from the group consisting of H, Li, Na, K, Mg _1/2 , Ca _1/2 , Sr _1/2 , Zn _1/2 ;

Z

a substituent selected from the group consisting of CO ₂ , SO ₂ , (Cl ₂ O ₇ ) _1/2 , B ₄ O ₆ , S ₂ O ₂ (thiosulfate) and/or C ₂ O ₂ (oxalate);

m

when M is Mg _1/2 , Ca _1/2 , a number between 1 and 2, in all other cases a number between 1 and 3;

n

a number between 1 and 4;

O

a number between 2 and 4; and

p

a number between 0 and 30

and preferably the alkali metal aluminocarbonates (dawsonites) are selected from the group consisting of potassium aluminocarbonate {(K ₂₀ )·(Al ₂ O ₃ )·(CO ₂ ) ₂ · 2H ₂ O}, sodium aluminothiosulphate {(Na _2o )·( Al ₂ 0 ₃ ) (S ₂ 0 ₂ ) ₂ 2 H ₂ O}, potassium aluminosulfite {(K ₂₀ ) (Al ₂ O ₃ ) (SO ₂ ) ₂ 2 H ₂ O}, calcium _{aluminooxalate} {(CaO ) (Al ₂ O ₃ ) (C ₂ O ₂ ) ₂ 5 H ₂ O}, magnesium aluminotetraborate {(MgO) (Al ₂ O ₃ ) (B ₄ O ₆ ) ₂ 5 H ₂ O}, Sodium alumodihydroxycarbonate, potassium alumodihydroxycarbonate and naturally occurring alkali aluminocarbonate minerals such as indigirite, tunisit, alumohydrocalcite or strontiodresserite;

Preferred silicates suitable for the purposes of the present invention are in particular selected from the group consisting of montmorillonite, bentonite, beidellite, mica, hectorite, saponite, vermiculite, ledikite, magadite, illite, kaolinite, wollastonite, attapulgite, biotite, lepidolite , kaolinite, margarite, muscovite, paragonite, halloysite, antigorite, nontronite, phlogopite, faujasite, gmelinite, brewsterite, nepheline syenite, and mixtures and combinations thereof; Also suitable as organic odor-reducing additives are preferred, selected from the group consisting of cage compounds, oxiranes, anhydrides and salts of hydroxycarboxylic acids.

wobei

n

eine ganze Zahl von 5 bis 10, insbesondere 6, 7 oder 8 ist.

Preferred cage compounds are selected from the group consisting of cyclodextrins, particularly alpha, beta and gamma cyclodextrins of the following general structure

whereby

n

is an integer from 5 to 10, in particular 6, 7 or 8.

In particular, the following cyclodextrins are suitable for the purposes of the present invention:

The cyclodextrins can also be chemically modified, e.g. B. surface-modified, substituted e.g. by carboxylic acids or immobilized.

Exemplary oxiranes are selected in particular from the group consisting of polyacrylates with oxirane groups such as polyglycidyl acrylates or polyglycidyl methacrylates and their copolymers, for example with styrene, ethylene, acrylates such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate or methacrylates such as methyl methacrylate, grafted glycidyl (meth)acrylates such as in WO2018007869 described and oxiranes with the following structures:

Anhydrides suitable for the purposes of the present invention are selected in particular from the group of polymers with maleic anhydride such as polystyrene-co-maleic anhydride, polyethylene-co-maleic anhydride or grafted structures such as polyethylene-g-maleic anhydride, polypropylene-g-maleic anhydride, SEBS- g-maleic anhydride, SBS-g-maleic anhydride;

Salts of hydroxycarboxylic acids can be selected, for example, from the group consisting of inorganic or organic salts of aliphatic saturated or unsaturated hydroxycarboxylic acids having at least 6 carbon atoms, preferably ricinoleic acid and dihydroxystearic acid, the salts preferably being inorganic salts with Zn, Cu, Zr as cations , particularly preferably the zinc salt of ricinoleic acid.

According to a preferred embodiment, the at least one odor-reducing additive, based on the first composite, has a weight content of 0.01 to 25% by weight, preferably 0.05 to 20% by weight, more preferably 0.1 to 10% by weight %, particularly preferably 0.2 to 5% by weight.

The at least one layer enclosing the core has in particular a layer thickness of 1/100 to 1/5 of the thickness of the core and/or 0.1 to 10 mm, preferably 0.2 to 2 mm.

In a further preferred embodiment it is provided that at least one thermoplastic polymer, preferably all thermoplastic polymers, of the first composite are selected from the group consisting of fresh plastics or plastic recyclates. For the purposes of the first composite, it is particularly preferred if the thermoplastic polymers are virgin plastics.

The core is also advantageously formed from a second composite that contains at least one thermoplastic and/or at least one thermosetting plastic, preferably the core is formed from a composite that contains at least one thermoplastic, the at least one thermoplastic of the second being particularly preferred Composite is identical to the at least one thermoplastic of the first composite. Here, in particular, the recyclability of the composite is ensured.

It is particularly preferred here if the second composite contains a plastic recyclate or is formed from it. The second composite particularly preferably consists entirely of a recyclate. In a further preferred embodiment, the second composite contains 20 to 80 parts of recyclate and 80 to 20 parts of new material.

According to the present invention, a plastic recyclate is a plastic recyclate according to the conceptual definition according to the standard DIN EN 15347:2007. There are also relevant international standards for many types of plastic recyclates. DIN EN 15353:2007, for example, is relevant for PET plastic recyclates. PS recyclates are described in more detail in DIN EN 15342:2008. PE recyclates are dealt with in DIN EN 15344:2008. PP recyclates are characterized in DIN EN 15345:2008. For the purpose of the corresponding special plastic recyclates, the present patent application adopts the definitions of these international standards as its own.

In contrast to new plastics, plastic recyclates usually show previous damage, ie new chemical groups are generated on the polymer chain by oxidative or (photo)oxidative processes. In the case of polyolefins, for example, these are predominantly carbonyl groups, which are not present in new goods or are only present to a very small extent. The concentration of the carbonyl groups is therefore at the same time a measure of the pre-damage of the polymer. The concentration of carbonyl groups can be determined by known analytical methods, such as infrared spectroscopy, as described, for example, in E. Richaud et al. Pole. degr. Rod. 2009, 94, 410-420. Here, the absorption of the carbonyl vibrations is measured in the range of 1720 cm ^-1 .

It is also advantageous if the plastic recyclate from recyclable material collections from industry, commerce or consumers, such as from packaging, for example flexible packaging such as foils or bags, rigid packaging such as cups or containers, transport containers such as barrels or boxes, automotive parts such as bumpers, battery boxes, trim parts, wheel trims, fiber waste such as carpets and/or E+E scrap.

The plastic recyclate can contain fibers made from cellulose, hemp, jute, sisal, kenaf, flax, bamboo, cotton, raffia and/or fillers such as wood flour.

In addition, the core can also comprise the at least one odor-reducing additive of the layer enclosing the core. This odor-reducing additive can, for example, be added to the core before the production of the composite component according to the invention or to the materials from which the core is formed.

However, it is also possible for the core to be free of odor-reducing additives.

For example, the core can contain odorous substances which can be encapsulated and thus enclosed by applying the at least one layer enclosing the core.

For example, the core can be in the form of a solid body, a film, a foam or a hollow body.

The composite component according to the present invention can in particular be in the form of an injection molded part, foam; Pipes, profiles, hollow bodies, tapes, which are produced via extrusion, injection molding, blow molding, e.g. for the electrical and electronics industry, construction industry, transport industry (car, aircraft, ship, train), a household and electrical appliance, vehicle part, consumer item, packaging, a Furniture are present or forms part thereof.

• a) Polymeren aus Olefinen oder Diolefinen wie z.B. Polyethylen (LDPE, LLDPE, VLDPE, ULDPE, MDPE, HDPE, UHMWPE), Metallocen-PE (m-PE), Polypropylen, Polyisobutylen, Poly-4-methyl-penten-1, Polybutadien, Polyisopren, wie z.B . auch Naturkautschuk (NR), Polycycloocten, Polyalkylen-Kohlenmonoxid-Copolymere, sowie Copolymere in Form von statistischen oder Blockstrukturen wie z.B. Polypropylen-Polyethylen (EP), EPM oder EPDM mit z.B. 5-Ethyliden-2-Norbornen als Comonomer, Ethylen-Vinylacetat (EVA}, Ethylen Acrylester, wie z.B. Ethylen-Butylacrylat, Ethylen-Acrylsäure und deren Salze (lonornere), sowie Terpolymere wie z.B. Ethylen-Acrylsäure-Glycidyl(meth)acrylat, Pfropfpolymere wie z.B. Polypropylen-graft-Maleinsäureanhydrid, Polypropylen-graft-Acrylsäure, Polyethylen graft-Acrylsäure, Polyethylen-Polybutylacrylat-graft-Maleinsäureanhydrid sowie Blends wie z.B. LDPE/LLDPE oder auch langkettenverzweigte Polypropylen-Copolymere die mit alphaOlefinen als Comonomere hergestellt werden wie z.B. mit 1-Buten, 1-Hexen, 1-0cten oder 1-0ctadecen,
• b) Polystyrol, Polymethylstyrol, Poly-alpha-methylstyrol, Polyvinylnaphthalin, Polyvinylbiphenyl, Polyvinyltoluol, Styrol-Butadien (SB), Styrol-Butadien-Styrol (SBS), Styrol Ethylen-Butylen-Styrol (SEBS), Styrol-Ethylen-Propylen-Styrol, Styrollsopren, Styrol-Isopren Styrol (SIS), Styrol-butadien-acrylnitril (ABS), Styrol-acrylnitril (SAN), Styrol-acrylnitril-acrylat (ASA), Styrol-Ethylen, Styrol-Maleinsäureanhydrid-Polymere einschließlich entsprechender Pfropfcopolymere wie z.B. Styrol auf Butadien, Maleinsäureanhydrid auf SBS oder SEBS, sowie Pfropfcopolymere aus Methylmethacrylat, Styrol-Butadien und ABS (MABS), sowie hydrierte Polystyrol-Derivate wie z.B. Polyvinylcyclohexan,
• c) halogenenthaltenden Polymeren wie z.B. Polyvinylchlorid (PVC), Polychloropren und Polyvinylidenchlorid (PVDC), Copolymere aus Vinylchlorid und Vinylidenchlorid oder aus Vinylchlorid und Vinylacetat, chloriertes Polyethylen, Polyvinylidenfluorid, Epichlorhydrin Homo und Copolymere insbesondere mit Ethylenoxid (ECO),
• d) Polymeren von ungesättigten Estern wie z.B. Polyacrylate und Polymethacrylate wie Polymethylmethacrylat (PMMA), Polybutylacrylat, Polylaurylacrylat; Polystearylacrylat; Polyglycidylacrylat, Polyglycidylmethacrylat, Polyacrylnitril, Polyacrylamide, Copolymere wie z.B. Polyacrylnitril-Polyal kylacrylat,
• e) Polymeren aus ungesättigten Alkoholen und Derivaten, wie z.B. Polyvinylalkohol, Polyvinylacetat, Polyvinylbutyral, Polyallylphthalat, Polyallylmelamin,
• f) Polyacetalen, wie z.B. Polyoxymethylen (POM) oder Copolymere mit z.B. Butanal, Polyphenylenoxiden und Blends mit Polystyrol oder Polyamiden,
• g) Polyphenylenoxiden und Blends mit Polystyrol oder Polyamiden.
• h) Polymeren von cyclischen Ethern wie z.B. Polyethylenglycol, Polypropylenglycol, Polyethylenoxid, Polypropylenoxid, Polytetrahydrofuran,
• i) Polyurethanen, aus hydroxyterminierten Polyethern oder Polyestern und aromatischen oder aliphatischen Isocyanaten wie z.B. 2,4- oder 2,6 Toluylendiisocyanat oder Methylendiphenyldiisocyanat insbesondere auch lineare Polyurethane (TPU), Polyharnstoffen,
• j) Polyamiden wie z.B. Polyamid-6, 6.6, 6.10, 4.6, 4.10, 6.12, 10.10, 10.12, 12.12, Polyamid 11, Polyamid 12 sowie (teil-)aromatische Polyamide wie z.B. Polyphthalamide, z.B. hergestellt aus Terephthalsäure und/oder Isophthalsäure und aliphatischen Diaminen wie z.B. Hexamethylendiamin oder m-Xylylendiamin oder aus aliphatischen Dicarbonsäuren wie z.B. Adipinsäure oder Sebazinsäure und aromatischen Diaminen wie z.B. 1,4- oder 1,3-Diaminobenzol, Blends von unterschiedlichen Polyamiden wie z.B. PA-6 und PA 6.6 bzw. Blends von Polyamiden und Polyolefinen wie z.B. PA/PP,
• k) Polyimiden, Polyamidimiden, Polyetherimiden, Polyesterimiden, Poly(ether)ketonen, Polysulfonen, Polyethersulfonen, Polyarylsulfonen, Polyphenylensulfiden, Polybenzimidazolen, Polyhydantoinen,
• l) Polyestern aus aliphatischen oder aromatischen Dicarbonsäuren und Diolen oder aus Hydroxy-Carbonsäuren wie z.B. Polyethylenterephthalat (PET), Polybutylenterephthalat (PBT), Polypropylenterephthalat (PTI), Polyethylennaphthylat (PEN), Poly-1,4-dimethylolcyclohexanterephthalat, Polyhydroxybenzoat, Polyhydroxynaphthalat, Polymilchsäure (PLA), Polyhydroxybutyrat (PHB), Polyhydroxyvalerat (PHV), Polyethylensuccinat, Polytetramethylensuccinat, Polycaprolacton,
• m) Polycarbonaten, Polyestercarbonaten, sowie Blends wie z.B. PC/ABS, PC/PBT, PC/PET/PBT, PC/PA,
• n) Cellulosederivaten wie z.B. Cellulosenitrat, Celluloseacetat, Cellulosepropionat, Cellulosebutyrat,
• o) Silikonen, z.B. auf der Basis von Dimethylsiloxanen, Methyl-Phenylsiloxanen oder Diphenylsiloxanen z.B. Vinylgruppen terminiert,
• p) sowie Mischungen, Kombinationen oder Blends aus zwei oder mehr der zuvor genannten Polymere.

It is also advantageous that the at least one thermoplastic polymer of the first and/or second composite is selected from the group consisting of

• a) Polymers from olefins or diolefins such as polyethylene (LDPE, LLDPE, VLDPE, ULDPE, MDPE, HDPE, UHMWPE), metallocene PE (m-PE), polypropylene, polyisobutylene, poly-4-methyl-pentene-1, polybutadiene , Polyisoprene, such as. also natural rubber (NR), polycyclooctene, polyalkylene-carbon monoxide copolymers, and copolymers in the form of random or block structures such as polypropylene-polyethylene (EP), EPM or EPDM with, for example, 5-ethylidene-2-norbornene as a comonomer, ethylene-vinyl acetate ( EVA}, ethylene acrylic esters such as ethylene butyl acrylate, ethylene acrylic acid and salts thereof (ionomers), and terpolymers such as ethylene acrylic acid glycidyl (meth) acrylate, graft polymers such as polypropylene graft maleic anhydride, polypropylene graft acrylic acid , Polyethylene graft-acrylic acid, polyethylene-polybutylacrylate-graft-maleic anhydride and blends such as LDPE/LLDPE or long-chain-branched polypropylene copolymers which are produced with alpha-olefins as comonomers such as with 1-butene, 1-hexene, 1-0ctene or 1- octadecene,
• b) polystyrene, polymethylstyrene, poly-alpha-methylstyrene, polyvinylnaphthalene, polyvinylbiphenyl, polyvinyltoluene, styrene-butadiene (SB), styrene-butadiene-styrene (SBS), styrene-ethylene-butylene-styrene (SEBS), styrene-ethylene-propylene- Styrene, styrene-soprene, styrene-isoprene styrene (SIS), styrene-butadiene-acrylonitrile (ABS), styrene-acrylonitrile (SAN), styrene-acrylonitrile acrylate (ASA), styrene-ethylene, styrene-maleic anhydride polymers including corresponding graft copolymers such as E.g. styrene on butadiene, maleic anhydride on SBS or SEBS, and graft copolymers of methyl methacrylate, styrene-butadiene and ABS (MABS), and hydrogenated polystyrene derivatives such as polyvinylcyclohexane,
• c) halogen-containing polymers such as polyvinyl chloride (PVC), polychloroprene and polyvinylidene chloride (PVDC), copolymers of vinyl chloride and vinylidene chloride or of vinyl chloride and vinyl acetate, chlorinated polyethylene, polyvinylidene fluoride, epichlorohydrin homo and copolymers, in particular with ethylene oxide (ECO),
• d) polymers of unsaturated esters such as polyacrylates and polymethacrylates such as polymethyl methacrylate (PMMA), polybutyl acrylate, polylauryl acrylate; polystearyl acrylate; Polyglycidyl acrylate, polyglycidyl methacrylate, polyacrylonitrile, polyacrylamides, copolymers such as polyacrylonitrile-polyalkyl acrylate,
• e) polymers of unsaturated alcohols and derivatives, such as polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyallyl phthalate, polyallylmelamine,
• f) polyacetals, such as polyoxymethylene (POM) or copolymers with, for example, butanal, polyphenylene oxides and blends with polystyrene or polyamides,
• g) polyphenylene oxides and blends with polystyrene or polyamides.
• h) polymers of cyclic ethers such as polyethylene glycol, polypropylene glycol, polyethylene oxide, polypropylene oxide, polytetrahydrofuran,
• i) polyurethanes, from hydroxy-terminated polyethers or polyesters and aromatic or aliphatic isocyanates such as 2,4- or 2,6-toluylene diisocyanate or methylenediphenyl diisocyanate, in particular also linear polyurethanes (TPU), polyureas,
• j) Polyamides such as polyamide 6, 6.6, 6.10, 4.6, 4.10, 6.12, 10.10, 10.12, 12.12, polyamide 11, polyamide 12 and (partly) aromatic polyamides such as polyphthalamides, for example produced from terephthalic acid and/or isophthalic acid and aliphatic diamines such as hexamethylenediamine or m-xylylenediamine or from aliphatic dicarboxylic acids such as adipic acid or sebacic acid and aromatic diamines such as 1,4- or 1,3-diaminobenzene, blends of different polyamides such as PA-6 and PA 6.6 or blends of Polyamides and polyolefins such as PA/PP,
• k) polyimides, polyamideimides, polyetherimides, polyesterimides, poly(ether)ketones, polysulfones, polyethersulfones, polyarylsulfones, polyphenylene sulfides, polybenzimidazoles, polyhydantoins,
• l) Polyesters from aliphatic or aromatic dicarboxylic acids and diols or from hydroxycarboxylic acids such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate (PTI), polyethylene naphthylate (PEN), poly-1,4-dimethylolcyclohexane terephthalate, polyhydroxybenzoate, polyhydroxynaphthalate, polylactic acid (PLA), Polyhydroxybutyrate (PHB), Polyhydroxyvalerate (PHV), Polyethylene Succinate, Polytetramethylene Succinate, Polycaprolactone,
• m) polycarbonates, polyester carbonates and blends such as PC/ABS, PC/PBT, PC/PET/PBT, PC/PA,
• n) cellulose derivatives such as cellulose nitrate, cellulose acetate, cellulose propionate, cellulose butyrate,
• o) Silicones, for example terminated on the basis of dimethylsiloxanes, methyl-phenylsiloxanes or diphenylsiloxanes, for example vinyl groups,
• p) and mixtures, combinations or blends of two or more of the aforementioned polymers.

If the polymers specified under a) to o) are copolymers, they can be present in the form of random, block or tapered structures. Furthermore, the polymers mentioned can be present in the form of linear, branched, star-shaped or hyper-branched structures.

If the polymers specified under a) to o) are stereoregular polymers, they can be present in the form of isotactic, stereotactic, but also atactic forms or as stereoblock copolymers.

Furthermore, the polymers specified under a) to o) can have both amorphous and (partially) crystalline morphologies.

Furthermore, the first and/or the second composite can contain at least one further additive selected from the group consisting of primary and/or secondary antioxidants, in particular primary and/or secondary antioxidants selected from the group consisting of phosphites, phosphonites, thiols, phenolic antioxidants, sterically hindered amines, hydroxylamines and mixtures or combinations thereof, UV absorbers, light stabilizers, recyclate stabilizers, metal deactivators, filler deactivators, antiozonants, nucleating agents, antinucleating agents, impact modifiers, plasticizers, lubricants, rheology modifiers, thixotropic agents, chain extenders, optical brighteners, antimicrobial agents (e.g. biocides) , antistatic agents, slip agents, antiblocking agents, coupling agents, crosslinking agents, branching agents, anticrosslinking agents, hydrophilizing agents, hydrophobicizing agents, adhesion promoters, dispersing agents, K compatibilizers, oxygen scavengers, acid scavengers, blowing agents, prodegradants, defoaming agents, marking agents, antifogging agents, additives to increase electrical conductivity and/or thermal conductivity, infrared absorbers or infrared reflectors, gloss improvers, matting agents, repellents, fillers, reinforcing materials, flame retardants, dyes, pigments and mixtures thereof.

In this case, the at least one additive is preferably in an amount of 0.01 to 9.99% by weight, preferably 0.01 to 4.98% by weight, particularly preferably 0.02 to 2.00% by weight. %, based on the total of the first or second composite.

The molding preferably contains primary and secondary antioxidants, acid scavengers and adhesion promoters in one or both components; in a further preferred embodiment, if a plastic recyclate is used, this contains in particular recyclate stabilizers or compatibilizers.

Suitable recyclate stabilizers are, in particular, compositions which contain a) a phenolic antioxidant, b) a phosphite or phosphonite and c) a salt of a long-chain fatty acid or a metal oxide. Recyclate stabilizers which contain a) a phenolic antioxidant or b) a phosphite or phosphonite and c) an alditol or cyclitol are particularly preferred.

Increasingly, the present invention relates to a method for producing a composite component according to any one of the preceding claims, in which a core is enclosed by at least one layer comprising a first composite containing or consisting of at least one thermoplastic polymer and at least one odor-reducing additive.

The present method according to the invention can be carried out, for example, by means of overmoulding, foaming or encasing the core with the first composite or by means of coextrusion (profile extrusion, multilayer film extrusion) of the core together with the first composite, multi-component injection molding (sandwich injection molding, assembly injection molding, 2K injection molding) , in-mold labeling processes or multi-component blow molding.

The above-described odor-reducing additives and any additional additives are incorporated into the plastic using conventional processing methods, with the polymer being melted and mixed with the additive composition according to the invention and any other additives, preferably using mixers, kneaders or extruders. Extruders such as single-screw extruders, twin-screw extruders, planetary roller extruders, ring extruders, co-kneaders, which are preferably equipped with vacuum degassing, are preferred as processing machines. The processing can take place under air or optionally under inert gas conditions. It is also possible to add the additives directly during processing, e.g. during co-extrusion or co-injection molding.

Furthermore, the additive compositions according to the invention can be produced and introduced in the form of so-called masterbatches or concentrates, which contain, for example, 10-90% of the compositions according to the invention in a polymer.

The present invention has been described in more detail based on the following exemplary embodiments, without restricting the invention to the specific parameters.

For the exemplary embodiments, recycled polypropylene dipoles PP70 from mtm Plastics (Niedergebra, Germany), new polypropylene PP 575P from Sabic and as additives Zeoflair 100 (zeolite 1) and Zeoflair 350 (zeolite 2) were used.

compounding

A ZSK 27 36D co-rotating twin-screw extruder from Leistritz was used for compounding. The cylinder temperature was 205°C with a throughput of 10 kg per hour. The screw speed was 200 ^rpm , the extruder motor utilization was 40-43% and the pressure at the die was 20 bar. The melt temperature of the polymer compound was 200-202 °C during compounding. The respective additive was fed to the melted polymer by means of a side metering. The extrudate was cooled in a water bath and then granulated. With each additive and the new PP material PP 575P, 10 kg of compound with a respective additive content of 3% by weight were produced, see Table 1. Table 1 Composition of the new PP material compounds. # PP 575P / kg additive Additives / kg Additives / % compounds / kg C1 9.7 zeolite 1 0.3 3 10 C2 9.7 zeolite 2 0.3 3 10

Sandwich injection molding / two-component injection molding

For the production of sandwich panels, which consist of a core (core) and an outer layer (skin) surrounding the core, a Ferromatik K110 from Milacron was used in combination with a sandwich intermediate panel from A&E, Dresden for timing the material injection and an IKP sandwich panel mold -Tact 150 × 150 × 3 mm ³ used. The recycled PP, which forms the material of the core, was fed via the horizontal main unit (unit 1) and virgin PP or the previously produced PP virgin material compounds, which form the core-enclosing material, were fed via the vertical unit ( Aggregate 2) processed.

At least 15 sandwich injection molded panels were produced from each material combination that can be found in Table 2. Table 2: Manufactured sandwich injection molded panels. # core skin additive in skin Additive in Skin / % SP1 (comparison test) Dipoles PP70 Dipoles PP70 - - SP2 (comparison test) PP 575P PP 575P - - SP3 (comparison test) Dipoles PP70 PP 575P - - SP4 (according to the invention) Dipoles PP70 C1 zeolite 1 3 SP5 (according to the invention) Dipoles PP70 C2 zeolite 2 3

Evaluation of the odor emission

The odor emission of the sandwich panels was carried out by three people. The sandwich panel was rated on a scale from 0 to 10, with the sandwich panel made from pure recycled PP (SP1=comparative test) being rated 10 and the sandwich panel made from pure virgin PP being rated 0 (SP2=comparative test). The mean value of the ratings is formed. One sandwich panel from each material combination SP1 to SP5 was stored in the absence of air and light at 80° C. and evaluated once a week for eight weeks with regard to the odor emission that occurred (Table 3). Table 3: Odor rating; Storage at 80 °C storage SP1 SP2 SP3 SP4 SP5 10 0 0 0 0 1 week 10 0 1 0 0 2 weeks 10 0 2 1 4 3 week 10 0 2 1 3 4th week 10 0 5 1 3 5th week 10 0 5 1 3 6th week 10 0 6 2 5 7th week 10 0 8th 2 5 8th week 10 0 7 1 4

During storage, the compositions or composites according to the invention show significantly reduced odor development compared to the comparative examples, i.e. a better rating.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 103354862004 [0002]
• EP19211082008 [0002]
• EP 2209553 [0002]
• US4795482 [0002]
• DE 10062558 [0002]
• WO 2017060171 [0002]
• EP12509382002 [0002]
• JP 62086031 [0002]
• WO 2018007869 [0025]

Claims (20)

Composite component, comprising a core, as well at least one layer enclosing the core, comprising a first composite containing or consisting of at least one thermoplastic polymer and at least one odor-reducing additive. composite component claim 1 , characterized in that the at least one odor-reducing additive is selected from the group consisting of zeolites; hydrotalcites; alkali aluminocarbonates (dawsonite); silicates; organic odor reducing additives, and mixtures and combinations thereof Composite component according to the preceding claim, characterized in that a) the zeolites are selected from the group consisting of compounds according to the general formula M _x/n [(AlO ₂ ] _x (SiO ₂ ) _y w H ₂ O where n is the charge of the cation M; M an element of the first or second main group, in particular Li, Na, K, Mg, Ca, Sr or Ba; y:x has a value from 0.8 to 15, preferably from 0.8 to 1.2, and w is a number from 0 to 300, preferably from 0.5 to 5, in particular the zeolites are selected from the group consisting of Sodium aluminosilicates of the formulas Na ₁₂ Al ₁₂ Si ₁₂ O ₄₈ 27 H ₂ O [zeolite A], Na ₆ Al ₆ Si ₅ O ₂₄ 2 NaX 7.5 H ₂ O (X= OH, halogen, ClO ₄ [sodalite ]); Na ₆ Al ₆ Si ₃₀ O ₇₂ · 24 H ₂ O; Na ₈ Al ₈ Si ₄₀ O ₉₅ · 24 H ₂ O; Na ₁₆ Al ₁₆ Si ₂₄ O ₈₀ x 16 H ₂ O; Na ₁₆ Al ₁₆ Si ₃₂ O ₉₆ · 16 H ₂ O; Na ₅₆ Al ₅₆ Si ₁₃₆ O ₃₈₄ x 250 H ₂ O [zeolite Y], Na ₈₆ Al ₈₆ Si ₁₀₆ O ₃₈₄ x 264 H ₂ O [zeolite X]; and zeolites in which the Na atoms of the aforementioned zeolites are partially or completely replaced by Li, K, Mg, Ca, Sr or Zn atoms, such as in particular (Na,K) ₁₀ Al ₁₀ Si ₂₂ O ₆₄ 20 H ₂ O, Ca _4.5 Na ₃ [(AlO ₂ ) ₁₂ (SiO ₂ ) ₁₂ 30 H ₂ O and K ₉ Na ₃ [(AlO ₂ ) ₁₂ SiO ₂ ) ₁₂ ] 27 H ₂ O; b) the hydrotalcites are selected from the group consisting of compounds according to the general formula (M ²⁺ ) _1-x . (M ³⁺ ) _x (OH) ₂ (A ^n- ) _x/n m H ₂ O where M ²⁺ is one or more of the metals from the group Mg, Ca, Sr or Zn, M ³⁺ Al or B, A is an anion with valence n, preferably OH ^- , HCO ^3- , CH ₃ COO-, C ₆ H ₆ COO ^- , CO ₃ ^2- , SO ₄ ^2- , HPO ₄ ^2- , n is a number from 1-2, 0<x<0.5 and m is a number from 0-20, in particular the hydrotalcites are selected from the group consisting of Al ₂ O ₃ 6 MgO CO ₂ 12 H ₂ O, Mg _4.5 Al ₂ (OH) ₁₃ CO ₃ 3.5 H ₂ O, 4 MgO AlO _{3 CO2.9H2O , 4MgO.Al2O3.CO2.6H2O , ZnO.3MgO.Al2O3.CO2 - 8-9H2O and ZnO.3MgO.Al _ 2O3 . CO2} · 5-6 _H2 O; c) the alkali metal aluminocarbonates (dawsonite) are selected from the group consisting of compounds according to the general formula {( _M2O )m _{( Al2O3 ) ZopH2O} } where M is an element selected from the group consisting of H, Li, Na, K, Mg _1/2 , Ca _1/2 , Sr _1/2 , Zn _1/2 ; Z is a substituent selected from the group consisting of CO ₂ , SO ₂ , (Cl ₂ O ₇ ) _1/2 , B ₄ O ₆ , S ₂ O ₂ (thiosulfate) and/or C ₂ O ₂ (oxalate); m when M is Mg _1/2 , Ca _1/2 , a number between 1 and 2, in all other cases a number between 1 and 3; n is a number between 1 and 4; o a number between 2 and 4; and p is a number between 0 and 30, and preferably the alkali metal aluminocarbonates (dawsonite) are selected from the group consisting of potassium aluminocarbonate {(K ₂₀ )·(Al ₂ O ₃ )·(CO ₂ ) ₂ · 2H ₂ O}, Sodium aluminothiosulfate {(Na ₂₀ ) (Al ₂ O ₃ ) (S ₂ O ₂ ) ₂ 2 H ₂ O}, potassium alumosulfite {(K ₂₀ ) (Al ₂ O ₃ ) (SO ₂ ) ₂ 2 H ₂ O}, calcium alumooxalate {(CaO) (Al ₂ O ₃ ) (C ₂ O ₂ ) ₂ .5H ₂ O}, magnesium alumotetraborate {(MgO) (Al ₂ O ₃ ) (B ₄ O ₆ ) ₂ ·5 H ₂ O}, sodium alumodihydroxycarbonate, potassium alumodihydroxycarbonate and naturally occurring alkali aluminocarbonate mine materials such as indigirite, tunisit, alumohydrocalcite or strontiodresserite; d) the silicates are selected from the group consisting of montmorillonite, bentonite, beidellite, mica, hectorite, saponite, vermiculite, ledikite, magadite, illite, kaolinite, wollastonite, attapulgite, biotite, lepidolite, kaolinite, margarite, muscovite, paragonite, halloysite , antigorite, nontronite, phlogopite, faujasite, gmelinite, brewsterite, nepheline syenite, and mixtures and combinations thereof; e) the organic odor-reducing additive is selected from the group consisting of cage compounds, oxiranes, anhydrides and salts of hydroxycarboxylic acids. Composite component according to the preceding claim, characterized in that a) the cage compounds are selected from the group consisting of cyclodextrins, in particular alpha, beta and gamma-cyclodextrins of the following general structure

where n is an integer from 5 to 10, in particular 6, 7 or 8. b) the oxiranes are selected from the group consisting of polyacrylates with oxirane groups such as polyglycidyl acrylates or polyglycidyl methacrylates and their copolymers, for example with styrene, ethylene, acrylates such as methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate or methacrylates such as methyl methacrylate, and oxiranes with the following structures:

c) the anhydrides are selected from the group of polymers with maleic anhydride such as polystyrene-co-maleic anhydride, polyethylene-co-maleic anhydride or grafted structures such as polyethylene-g-maleic anhydride, polypropylene-g-maleic anhydride, SEBS-g-maleic anhydride, SBS -g-maleic anhydride; d) the salts of hydroxycarboxylic acids are selected from the group consisting of inorganic or organic salts of aliphatic saturated or unsaturated hydroxycarboxylic acids having at least 6 carbon atoms, preferably ricinoleic acid and dihydroxystearic acid, the salts preferably being inorganic salts with Zn, Cu, Zr as cations are, particularly preferably the zinc salt of ricinoleic acid. Composite component according to one of the preceding claims, characterized in that the at least one odor-reducing additive, based on the first composite, in a weight content of 0.01 to 25% by weight, preferably 0.05 to 20% by weight, more preferably 0.1 to 10% by weight, particularly preferably 0.2 to 5% by weight. Composite component according to one of the preceding claims, characterized in that the at least one layer enclosing the core has a layer thickness of 1/100 to 1/5 of the thickness of the core and/or 0.1 to 10 mm, preferably 0.5 to 5 mm . Composite component according to one of the preceding claims, characterized in that at least one thermoplastic polymer of the first composite is selected from the group consisting of virgin plastics or recycled plastics. Composite component according to one of the preceding claims, characterized in that the core is formed from a second composite which contains at least one thermoplastic and/or at least one duroplastic plastic, preferably the core is formed from a composite which contains at least one thermoplastic plastic, wherein particularly preferably, the at least one thermoplastic of the second composite is identical to the at least one thermoplastic of the first composite. Composite component according to the preceding claim, characterized in that the second composite contains a plastic recyclate or is formed from it. Composite component according to the preceding claim, characterized in that the plastic recyclate from collections of valuable materials from industry, commerce or consumers, such as from packaging, for example flexible packaging such as foils or bags, rigid packaging such as cups or containers, transport containers such as barrels or crates, automotive parts such as bumpers, battery boxes, trim parts, wheel trims, fiber waste such as carpets and/or E+E scrap. Composite component according to one of Claims 8 until 10 , characterized in that the plastic recyclate contains fibers made of cellulose, hemp, jute, sisal, kenaf, flax, bamboo, cotton, raffia and/or fillers such as wood flour. Composite component according to one of the preceding claims, characterized in that the core also comprises the at least one odor-reducing additive of the layer enclosing the core. Composite component according to one of the preceding claims, characterized in that the core contains odour-polluting substances. Composite component according to one of the preceding claims, characterized in that the core is in the form of a solid body, a film, a foam or a hollow body. Composite component according to one of the preceding claims, characterized in that the composite component is in the form of an injection molded part, foam; Pipes, profiles, hollow bodies, tapes, which are produced via extrusion, injection molding, blow molding, e.g. for the electrical and electronics industry, construction industry, transport industry (car, aircraft, ship, train), a household and electrical appliance, vehicle part, consumer item, packaging, a Furniture is present or forms part of it. Composite component according to one of the preceding claims, characterized in that the at least one thermoplastic polymer of the first and/or second composite is selected from the group consisting of a) polymers of olefins or diolefins such as polyethylene (LDPE, LLDPE, VLDPE, ULDPE, MDPE , HDPE, UHMWPE), metallocene PE (m-PE), polypropylene, polyisobutylene, poly-4-methyl-pentene-1, polybutadiene, polyisoprene, such as . also natural rubber (NR), polycyclooctene, polyalkylene-carbon monoxide copolymers, and copolymers in the form of random or block structures such as polypropylene-polyethylene (EP), EPM or EPDM with, for example, 5-ethylidene-2-norbornene as a comonomer, ethylene-vinyl acetate ( EVA}, ethylene acrylic esters such as ethylene butyl acrylate, ethylene acrylic acid and salts thereof (lonornere), and Ter polymers such as ethylene acrylic acid glycidyl (meth) acrylate, graft polymers such as polypropylene graft maleic anhydride, polypropylene graft acrylic acid, polyethylene graft acrylic acid, polyethylene polybutyl acrylate graft maleic anhydride and blends such as LDPE / LLDPE or long-chain branched Polypropylene copolymers which are produced with alpha-olefins as comonomers, for example with 1-butene, 1-hexene, 1-0ctene or 1-0ctadecene, b) polystyrene, polymethylstyrene, poly-alpha-methylstyrene, polyvinylnaphthalene, polyvinylbiphenyl, polyvinyltoluene, styrene-butadiene (SB), styrene butadiene styrene (SBS), styrene ethylene butylene styrene (SEBS), styrene ethylene propylene styrene, styrene soprene, styrene isoprene styrene (SIS), styrene butadiene acrylonitrile (ABS), Styrene-acrylonitrile (SAN), styrene-acrylonitrile acrylate (ASA), styrene-ethylene, styrene-maleic anhydride polymers including corresponding graft copolymers such as styrene on butadiene, maleic anhydride on SBS or SEBS, and graft copolymers au s methyl methacrylate, styrene-butadiene and ABS (MABS), as well as hydrogenated polystyrene derivatives such as polyvinylcyclohexane, c) halogen-containing polymers such as polyvinyl chloride (PVC), polychloroprene and polyvinylidene chloride (PVDC), copolymers of vinyl chloride and vinylidene chloride or of vinyl chloride and vinyl acetate, chlorinated polyethylene, polyvinylidene fluoride, epichlorohydrin homo and copolymers, in particular with ethylene oxide (ECO), d) polymers of unsaturated esters such as polyacrylates and polymethacrylates such as polymethyl methacrylate (PMMA), polybutyl acrylate, polylauryl acrylate; polystearyl acrylate; Polyglycidyl acrylate, polyglycidyl methacrylate, polyacrylonitrile, polyacrylamides, copolymers such as polyacrylonitrile-polyalkyl acrylate, e) polymers of unsaturated alcohols and derivatives, such as polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyallyl phthalate, polyallylmelamine, f) polyacetals, such as polyoxymethylene (POM) or copolymers with eg butanal, polyphenylene oxides and blends with polystyrene or polyamides, g) polyphenylene oxides and blends with polystyrene or polyamides. h) polymers of cyclic ethers such as polyethylene glycol, polypropylene glycol, polyethylene oxide, polypropylene oxide, polytetrahydrofuran, i) polyurethanes, from hydroxy-terminated polyethers or polyesters and aromatic or aliphatic isocyanates such as 2,4- or 2,6-toluylene diisocyanate or methylenediphenyl diisocyanate, in particular also linear polyurethanes ( TPU), polyureas, j) polyamides such as polyamide 6, 6.6, 6.10, 4.6, 4.10, 6.12, 10.10, 10.12, 12.12, polyamide 11, polyamide 12 and (partly) aromatic polyamides such as polyphthalamides, for example produced from terephthalic acid and/or isophthalic acid and aliphatic diamines such as hexamethylenediamine or m-xylylenediamine or from aliphatic dicarboxylic acids such as adipic acid or sebacic acid and aromatic diamines such as 1,4- or 1,3-diaminobenzene, blends of different polyamides such as PA-6 and PA 6.6 or blends of polyamides and polyolefins such as PA/PP, k) polyimides, polyamideimides, polyetherimides, poly esterimides, poly(ether)ketones, polysulfones, polyethersulfones, polyarylsulfones, polyphenylene sulfides, polybenzimidazoles, polyhydantoins, I) polyesters made from aliphatic or aromatic dicarboxylic acids and diols or from hydroxycarboxylic acids such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate (PTI ), polyethylene naphthylate (PEN), poly-1,4-dimethylolcyclohexane terephthalate, polyhydroxybenzoate, polyhydroxynaphthalate, polylactic acid (PLA), polyhydroxybutyrate (PHB), polyhydroxyvalerate (PHV), polyethylene succinate, polytetramethylene succinate, polycaprolactone, m) polycarbonates, polyester carbonates, and blends such as PC/ABS, PC/PBT, PC/PET/PBT, PC/PA, n) cellulose derivatives such as cellulose nitrate, cellulose acetate, cellulose propionate, cellulose butyrate, o) silicones, for example based on dimethylsiloxanes, methylphenylsiloxanes or diphenylsiloxanes, for example Vinyl groups terminated, p) and mixtures, combinations or blends of two or more of z uvor mentioned polymers. Composite component according to one of the preceding claims, characterized in that the first and/or the second composite contains at least one further additive selected from the group consisting of primary and/or secondary antioxidants, in particular primary and/or secondary antioxidants selected from the group consisting of Phosphites, phosphonites, thiols, phenolic antioxidants, sterically hindered amines, hydroxylamines and mixtures or combinations thereof, UV absorbers, light stabilizers, recyclate stabilizers, metal deactivators, filler deactivators, antiozonants, nucleating agents, antinucleating agents, impact modifiers, plasticizers, lubricants, rheology modifiers, thixotropic agents, chain extenders, optical brighteners, antimicrobial agents (e.g. biocides), antistatic agents, slip agents, antiblocking agents, coupling agents, crosslinking agents, branching agents, anticrosslinking agents, hydrophilization agents, hydrophobizing agents, adhesion promoters, dispersants, compatibilizers, oxygen scavengers, acid scavengers, blowing agents, prodegradants, defoaming agents, marking agents, antifogging agents, additives to increase increase in electrical conductivity and/or thermal conductivity, infrared absorbers or infrared reflectors, gloss improvers, matting agents, repellents, fillers, reinforcing materials and mixtures thereof. Composite component according to the preceding claim, characterized in that the at least one additive is present in an amount of 0.01 to 9.99% by weight, preferably 0.01 to 4.98% by weight, particularly preferably 0.02 to 2. 00% by weight, based on the entirety of the first or second composite. Method for producing a composite component according to one of the preceding claims, in which a core is enclosed by at least one layer comprising a first composite containing or consisting of at least one thermoplastic polymer and at least one odor-reducing additive. Method according to the preceding claim, characterized in that the enclosing by means of injection molding, foaming or sheathing of the core with the first composite or by means of coextrusion (profile extrusion, multilayer film extrusion) of the core together with the first composite, multi-component injection molding (sandwich injection molding, assembly injection molding , 2K injection moulding), in-mould labeling processes or multi-component blow molding.