ITEMS FOR FOOD CONTACT APPLICATIONS

Description

[0001] The present invention relates to shaped bodies selected from the group consisting of tableware, drinking vessels, cutlery, bowls, cans and other types of vessels, trays and molds for fatty foods.

[0002] The molded articles within the meaning of the present application consist of a special thermoplastic composition. The molded articles can be partially coated with other materials or bonded to other materials, for example, in the form of handles or coatings. When used as intended, the molded article is in direct contact with fats, oils, or fatty foods.

[0003] The invention also relates to the use of the thermoplastic composition for producing the shaped bodies as part of an article containing or consisting of the shaped body, the article itself and the use of the articles for the transport, packaging, storage, treatment, production, preparation, processing and shaping of fats, oils or fatty foods.

[0004] Furthermore, the invention relates to a method for producing a shaped fatty food.

[0005] Polycarbonate has proven itself in a variety of ways as a material for the thermoplastic production of articles for food contact applications. For example, polycarbonate is used to make beverage bottles, tableware, drinking vessels, cutlery, bowls, cans and other types of containers, trays, and even chocolate molds. The advantage of polymeric thermoplastics over other materials such as glass, porcelain, or metal, which are also used in these applications, is their better fracture resistance and lower weight. Compared to thermosets, thermoplastics offer particular advantages in terms of easier mass production and material recycling. Polycarbonate is particularly suitable as a polymeric thermoplastic due to its high heat resistance compared to other thermoplastics and its advantageous balance of stiffness, toughness, and hardness.

[0006] However, one disadvantage of polycarbonate is its insufficient stress cracking resistance for some applications, particularly in contact with fats and oils or fatty foods. This can lead to damage to articles used for packaging, serving, storing, and / or transporting fats, oils, or fatty foods; as tools for consuming fats, oils, or fatty foods; as tools for manufacturing, preparing, shaping, and processing fats, oils, or fatty foods; and as parts of machinery for manufacturing, preparing, shaping, and processing fats, oils, or fatty foods.

[0007] The task was therefore to provide molded articles selected from the group consisting of tableware, drinking vessels, cutlery, bowls, cans and other types of vessels, trays and molds for fatty foods, whereby the molded articles consist of thermoplastic compositions with an improved balance of melt flowability and stress cracking resistance in contact with fats, oils and fatty foods compared to pure polycarbonate.

[0008] The molded bodies should have a property profile with regard to toughness, rigidity, heat resistance and hydrolysis resistance that is as similar as possible to molded bodies made of pure polycarbonate, so that the use and handling established for molded bodies made of polycarbonate can be retained as far as possible.

[0009] A specific form of such molded articles according to the invention, wherein the molded articles consist of thermoplastic compositions, are molds for molding fats or fatty foods. The food is poured into them in a heated and thus melted form, then solidifies upon cooling, and after cooling, assumes the predetermined shape. An example of such molds are chocolate molds, which are often made of thermoplastics, particularly polycarbonate.

[0010] EP 0 429 969 B1 discloses a coolable chocolate mold made of plastic.

[0011] DE-PS 1 283 661 discloses a metal-reinforced chocolate mold made of plastic.

[0012] DE-OS 18 06 244 discloses a process for forming and packaging fat glaze masses or couvertures as well as a mold suitable for carrying out this process made of plasticizer-free thermoplastic material such as polystyrene and polypropylene.

[0013] EP 0 531 651 A3 discloses a folding mold for the production of hollow chocolate bodies. The folding mold consists of two halves, each consisting of a frame, a movable frame half, and two mold inserts. The mold inserts are interchangeably housed in the frames and are made of a thermoplastic. Suitable plastics are disclosed as polypropylene, polycarbonate, and polyamide.

[0014] JP 2010 035470 A discloses a chocolate mold consisting of a plastic selected from polycarbonate, polyamide, and unsaturated nitrile compounds such as acrylonitrile or methacrylonitrile. The mold further comprises an O-ring containing black iron oxide powder to remove foreign matter from the chocolate.

[0015] WO 2017 / 186690 A1 discloses polycarbonate-ABS compositions and molded articles produced therefrom. However, no molded articles for fatty foods are disclosed.

[0016] The website http: / / www.chocolat-chocolat.com / home / chocolate-molds / index.html, as of December 23, 2017, discloses chocolate molds made of polycarbonate.

[0017] State-of-the-art chocolate molds made of polycarbonate have a limited product lifespan due to the material's poor stress cracking resistance when in contact with the fats in cocoa butter, particularly at the elevated processing temperature of liquid chocolate. Furthermore, chocolate molds produced in polycarbonate molds generally exhibit an undesirable glossy surface finish, as the polycarbonate itself has a high-gloss cosmetic finish. Achieving a matte appearance for the chocolate mold by applying a surface texture to the chocolate mold, such as fine graining, often leads to problems during demolding of the chocolate mold and thus represents a poorly suited technical solution for achieving the desired surface finish of the chocolate mold.

[0018] A further disadvantage of using polycarbonate to produce chocolate molds is the comparatively poor melt flowability of the thermoplastic molding compounds. This limits the achievable flow lengths and wall thicknesses during chocolate mold production, as well as the formation of delicate structures and finely textured surfaces on the chocolate mold. While this can be counteracted in a conventional manner by increasing the processing temperature during injection molding, such elevated processing temperatures generally lead to a reduction in molecular weight and, consequently, to poorer mechanical properties of the chocolate molds, particularly to a further impairment of the stress cracking resistance of such molds in contact with fats and oils, as well as fatty foods.Improving the melt flowability of the polycarbonate material by reducing its molecular weight is therefore not an option.

[0019] It was therefore desirable to provide molds for producing molded fats or fatty foods, in particular chocolate molds, with a more matt surface, wherein a metal injection mold with a polished metal surface is used in the production of the mold by injection molding and a thermoplastic composition with an improved balance of melt flowability and stress crack resistance, in particular in contact with fats and fatty foods, is used compared to pure polycarbonate, and wherein the molded article produced in this way from the thermoplastic composition has an inherently more matt surface cosmetic compared to the use of pure polycarbonate.

[0020] These casting moulds should have a property profile with regard to toughness, rigidity, heat resistance and hydrolysis resistance that is as similar as possible to corresponding articles made of pure polycarbonate, so that the use and handling established for such polycarbonate casting moulds can be maintained as far as possible.

[0021] It is known that the flowability of polycarbonate molding compounds can also be improved by adding polymer blend partners. Thermoplastic molding compounds made from polycarbonates and, for example, acrylonitrile-butadiene-styrene (ABS) polymers (PC / ABS blends) have long been in diverse technical applications and demonstrate improved processability in injection molding compared to pure polycarbonate. Such compositions are disclosed, for example, in DE-A 1 170 141. US Pat. No. 4,526,926 specifically discloses PC / ABS blends based on ABS polymers produced by mass polymerization, which are characterized by improved processability, good impact strength and heat resistance, and low gloss.

[0022] When blending different polymers to achieve the desired technical improvements, blending them together generally results in heterogeneous polymer blend systems. For such polymer blend systems, it is generally not possible for a person skilled in the art to reliably predict from the properties of the individual components whether and how they will affect the quality of the food products that come into contact with molded articles made from such blends.

[0023] The quality of food refers to the nature of the food, for example in terms of its feel, its appearance (e.g. its colour or surface texture), its taste, its smell and its pH value.

[0024] A further object was therefore to provide shaped bodies according to the invention according to one of the descriptions set out above, wherein the shaped bodies made of thermoplastic compositions influence the nature of the fat, oil or fatty food with which the shaped bodies are in direct contact during use of the article, for example with regard to its feel, its appearance (for example its color or its surface texture), its taste, its smell and its pH value to the smallest possible extent or particularly preferably not at all.

[0025] These molded articles should have a property profile with regard to toughness, rigidity, heat resistance and hydrolysis resistance that is as similar as possible to articles made of pure polycarbonate, so that the use and handling established for articles made of polycarbonate can be maintained as far as possible.

[0026] According to a specific objective, these molded articles are intended to be suitable for use in food contact applications in which the molded articles are intended to come into contact with fats, oils, and fatty foods at temperatures from 0°C to 100°C, particularly at temperatures from 20°C to 80°C, and especially at temperatures from 30 to 70°C. This requires that the above-described improvement in stress cracking resistance is achieved within these temperature ranges. According to another specific objective, the molded articles are intended to be suitable for contact with liquid chocolate and similar liquid cocoa-containing foods, particularly at temperatures from 30 to 70°C.

[0027] Another specific objective was to provide molds for fatty foods, particularly chocolate molds, made of thermoplastic compositions with an improved balance of melt flowability and stress crack resistance in contact with fats, oils, and fatty foods, particularly liquid chocolate and similar liquid cocoa-containing foods, compared to pure polycarbonate, as well as with a reduced degree of gloss. The foods processed in such molds are generally used in the molding process in a temperature range of 20 to 80°C, particularly 30 to 70°C. Therefore, the above-described improvement in stress crack resistance must be achieved within these temperature intervals.

[0028] The molded articles according to the invention, as well as the thermoplastic compositions from which these molded articles are made, must, of course, meet the regulatory requirements placed on plastics, molded articles, and articles intended for food contact. These requirements vary regionally and can change over time. They also depend on the food in question and the type of application.

[0029] For example, in the countries of the European Union, the molded articles and the thermoplastic compositions from which these molded articles are made must meet the regulatory requirements of Commission Regulation (EU) No. 10 / 2011 of 14 January 2011 on plastic materials and articles intended to come into contact with food. According to Article 12 of the aforementioned EU regulation, this means, for example, that components from the molded articles made from the thermoplastic compositions must not migrate into food simulants in quantities totaling more than 10 mg per dm² of the molded article surface that comes into contact with the food. The food simulant to be used, as well as the temperature and duration of contact between the food simulant and the plastic body, depend on the intended application and should simulate this as best as possible.

[0030] According to the above-mentioned regulatory requirement in countries of the European Union, depending on the food in question, the following are particularly suitable as food simulants: a mixture of 10 vol.% ethanol in water, a mixture of 20 vol.% ethanol in water, a mixture of 50 vol.% ethanol in water, a mixture of 3 wt.% acetic acid in water, vegetable oil (for example olive oil or rapeseed oil), a mixture of 95 vol.% ethanol with 5 vol.% water and isooctane.

[0031] For plastic applications in contact with fats, oils or fatty foods, for example for chocolate molds, suitable food simulants are either vegetable oil (for example olive oil or rapeseed oil), a mixture of 95 vol% ethanol with 5 vol% water or isooctane.

[0032] In a simplified test method, macroscopic physical properties such as transmittance, haze, pH, or conductivity can also be examined on the media used as food simulants after storing samples of the thermoplastic compositions in the media for a certain period of time. Reduced transmittance or a greater haze value then indicates, for example, migration of components from the sample into the food simulant. In this way, different thermoplastic materials can be compared with each other with regard to their influence on the properties of the fat, oil, or fatty food with which molded articles made from these materials come into direct contact during use in articles containing such molded articles.

[0033] It has now surprisingly been found that molded articles selected from the group consisting of tableware, drinking vessels, cutlery, bowls, cans and other types of vessels, trays and molds each for fatty foods. consisting of a thermoplastic composition, characterized in that the thermoplastic composition contains or consists of the following components: A) Aromatic polycarbonate, B) rubber-modified vinyl (co)polymer comprising B.1) 80 to 95% by weight, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5 to 20% by weight, based on the rubber-modified vinyl (co)polymer B, of one or more rubber-elastic graft bases with glass transition temperatures < -50°C containing at least 50% by weight, based on B.2, of structural units derived from 1,3-butadiene, where the rubber-modified vinyl (co)polymer B (i) has a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer from structural units according to B.1 and (i.2) vinyl (co)polymer enclosed in the rubber particles as a separate disperse phase, also comprising structural units according to B.1 and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units according to B.1 which is not bound to the rubber particles and not enclosed in these rubber particles, wherein the disperse phase according to (i) has an average diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners which fulfill the objects of the invention.

[0034] These are molded articles intended for food contact with fats, oils, or fatty foods. "Food contact" means that the molded articles are suitable for direct food contact. As described above, from a regulatory perspective, it is necessary that the thermoplastic composition, as well as the molded articles produced therefrom and articles containing or consisting of the molded articles, meet the regulatory requirements for materials and molded articles that come into contact with the respective food, in accordance with the respective regional requirements. In a preferred embodiment, each of the individual components A to C of the thermoplastic composition also meets these requirements.

[0035] In a preferred embodiment, components A to C of the thermoplastic composition, the thermoplastic compositions, the molded articles produced therefrom and the articles containing or consisting of these molded articles meet the regulatory requirements according to Commission Regulation (EU) No 10 / 2011 of 14 January 2011 on plastic materials and articles intended to come into contact with food.

[0036] This means, in particular, that in this preferred embodiment, all components A to C or, if components A to C are polymers, all monomeric building blocks from which these polymers are constructed, as well as all additives intentionally used in these polymers (except dyes) are generally permitted for food contact in accordance with the Union list of permitted monomers, other starting materials, macromolecules obtained by microbial fermentation, additives, and auxiliaries in the production of plastics according to Annex I of the aforementioned EU Regulation. The list in this Annex I is expressly included in the disclosure content of this application.

[0037] In a preferred embodiment, for moldings produced from the thermoplastic compositions and also for moldings produced from each of components A, B and from each individual optional polymeric individual constituent of component C, components from them must not migrate into the food simulant within 2 hours at 70°C, more preferably within 10 days at 40°C, in amounts totaling no more than 10 mg per dm² of the molding surfaces that come into contact with a food simulant, wherein the food simulant is selected from the group consisting of vegetable oil (for example olive oil or rapeseed oil), a mixture of 95% by volume ethanol with 5% by volume water and isooctane. The food simulant is very particularly preferably isooctane.

[0038] In a preferred embodiment, components A, B and optional polymeric constituents of component C each contain in total not more than 2000 ppm, particularly preferably not more than 1000 ppm of residual monomers and, if solvents are used in the manufacturing process, residual solvents.

[0039] The thermoplastic compositions preferably contain or consist of 30-90 wt.%, more preferably 40-85 wt.%, particularly preferably 50-80 wt.% and most preferably 60-75 wt.% of component A, 10-70 wt.%, more preferably 10-55 wt.%, particularly preferably 15-45 wt.% and most preferably 24-39 wt.% of component B, 0-20 wt.%, more preferably 0.01-20 wt.%, particularly preferably 0.05-5 wt.% and most preferably 0.1-1 wt.% of component C.

[0040] If the compositions contain additional components besides components A, B and C, these additional components must also meet the regulatory requirements for contact with fats, oils or fatty foods.

[0041] In a preferred embodiment, the compositions contain in total at least 90 wt.%, more preferably at least 95 wt.% and particularly preferably at least 99 wt.% of components A, B and C. In a most preferred embodiment, the compositions consist only of components A, B and C.

[0042] The shaped bodies according to the invention are preferably suitable as means for the transport, packaging, storage, treatment, production, processing, and consumption of fatty foods. The fat content in these foods is preferably at least 5% by weight, particularly preferably at least 10% by weight, further preferably at least 20% by weight, and most preferably at least 30% by weight.

[0043] The shaped bodies according to the invention are also suitable as means for the transport, packaging, storage, treatment, production, packaging and consumption of fats and oils.

[0044] The molded articles according to the invention are also preferably suitable as means for the transport, packaging, storage, treatment, production, processing, and consumption of fatty foods, fats, and oils at a temperature above 30°C, more preferably from 40 to 80°C, whereby the foods thus have this higher temperature. This suitability means that even at these higher temperatures above 30°C, preferably from 40 to 80°C, an acceptable migration from the molded article into the food or into a food simulant still occurs.

[0045] The shaped bodies according to the invention are a representative selected from the group consisting of tableware, drinking vessels, cutlery, bowls, cans and other types of vessels, trays and molds for fatty foods.

[0046] InIn a further preferred embodiment, the shaped body according to the invention is a casting mold for fats and fatty foods.

[0047] In In a further preferred embodiment, the shaped body according to the invention is a chocolate casting mold.

[0048] The chocolate mold is used, for example, to produce chocolate bars, chocolate bars, pralines or hollow chocolate objects such as a chocolate egg, a chocolate Santa Claus or a chocolate bunny.

[0049] A further subject of the present invention is also a process for producing a shaped fat or fat-containing food, particularly preferably chocolate and similar liquid, cocoa-containing food, using the casting molds according to the invention.

[0050] In this process, the food is first heated to a temperature above its melting point or melting temperature range and thereby liquefied, then poured into the mold in molten form, then cooled to a temperature below its melting point or melting temperature range and thereby solidified, and finally demolded from the mold.

[0051] A further object of the present invention is the use of thermoplastic compositions containing or consisting of components A, B and C for the production of molded articles as part of articles selected from the group consisting of containers for packaging, serving, storing and / or transporting fats, oils or fatty foods, tools for consuming fats, oils or fatty foods, tools for producing, preparing, shaping and processing foodstuffs and parts of machines for producing, preparing, shaping and processing fats, oils or fatty foods.

[0052] Preference is given to the use for producing casting molds, further preference is given to the use for producing casting molds for fats, oils and fatty foods, and particular preference is given to the use for producing chocolate casting molds.

[0053] A further object of the present invention is the use of the articles according to the invention for the transport, packaging, storage, treatment, production, preparation, processing and shaping of fats, oils or fatty foods. Component A

[0054] Component A is an aromatic polycarbonate or a mixture of several aromatic polycarbonates.

[0055] Aromatic polycarbonates according to component A which are suitable according to the invention are known from the literature or can be prepared by processes known from the literature (for the preparation of aromatic polycarbonates see, for example, Schnell, "Chemistry and Physics of Polycarbonates", Interscience Publishers, 1964 and DE-AS 1 495 626, DE-A 2 232 877, DE-A 2 703 376, DE-A 2 714 544, DE-A 3 000 610, DE-A 3 832 396).

[0056] Aromatic polycarbonates are produced, for example, by reacting diphenols with carbonic acid halides, preferably phosgene, and / or with aromatic dicarboxylic acid dihalides, preferably benzenedicarboxylic acid dihalides, by the interfacial process, optionally using chain terminators, for example, monophenols, and optionally using trifunctional or more than trifunctional branching agents, for example, triphenols or tetraphenols. Production via a melt polymerization process by reacting diphenols with, for example, diphenyl carbonate is also possible.

[0057] The preferred diphenol is 2,2-bis-(4-hydroxyphenyl)-propane (bisphenol A).

[0058] The diphenols can be used individually or as any mixture. The diphenols are known from the literature or are available by known methods.

[0059] Suitable chain terminators for the production of thermoplastic aromatic polycarbonates include phenol and p-tert-butylphenol. The chain terminators are generally used in amounts of between 0.5 mol% and 10 mol%, based on the molar sum of the diphenols used.

[0060] The thermoplastic, aromatic polycarbonates can be branched in a known manner, preferably by incorporating 0.05 to 2.0 mol%, based on the sum of the diphenols used, of trifunctional or more than trifunctional compounds, for example those with three or more phenolic groups.

[0061] Both homopolycarbonates and copolycarbonates can be suitable, provided they meet the regulatory requirements for food contact applications.

[0062] In a preferred embodiment, the aromatic polycarbonates suitable as component A have a weight-average molecular weight M w (determined by gel permeation chromatography (GPC) in methylene chloride with polycarbonate as standard) of 20,000 g / mol to 40,000 g / mol, preferably of 22,000 g / mol to 35,000 g / mol, in particular of 24,000 to 32,000 g / mol.

[0063] In a preferred embodiment, the aromatic polycarbonates suitable as component A contain oligomeric constituents having a molecular weight (determined by gel permeation chromatography (GPC) in methylene chloride with polycarbonate as standard) of less than 1000 Dalton in a proportion of not more than 2 wt.%, more preferably not more than 1 wt.%, particularly preferably not more than 0.5 wt.%, most preferably not more than 0.2 wt.%. Component B

[0064] Component B consists of rubber-modified vinyl (co)polymers made from B.1) 80 to 95% by weight, preferably 83 to 93% by weight, more preferably 85 to 92% by weight, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5 to 20% by weight, preferably 7 to 17% by weight, more preferably 8 to 15% by weight, based on the rubber-modified vinyl (co)polymer B, of one or more rubber-elastic graft bases with glass transition temperatures T g < -50°C, preferably < -60°C, particularly preferably < -70°C containing at least 50% by weight, preferably at least 70% by weight, particularly preferably 100% by weight, based on B.2, of structural units derived from 1,3-butadiene, where the rubber-modified vinyl (co)polymer B (i) has a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer of structural units according to B.1 and (i.2) vinyl (co)polymer enclosed in the rubber particles as a separate disperse phase, also consisting of structural units according to B.1 and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units according to B.1 which is not bound to the rubber particles and not enclosed in these rubber particles. and wherein the disperse phase according to (i) has an average diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, preferably of 0.5 to 1.5 µm, in particular of 0.7 to 1.2.

[0065] Unless expressly described otherwise in the present invention, the glass transition temperature T g is determined for all components by means of dynamic differential scanning calorimetry (DSC) according to DIN EN 61006 (version of 1994) at a heating rate of 10 K / min with determination of the T g as the midpoint temperature (tangent method).

[0066] The rubber-modified vinyl (co)polymers according to component B have a melt flow rate (MVR), measured according to ISO 1133 (2012 version) at 220°C with a ram load of 10 kg, of preferably 2 to 20 ml / 10 min, particularly preferably 3 to 15 ml / 10 min, and especially 4 to 8 ml / 10 min. If mixtures of several rubber-modified vinyl (co)polymers are used as component B, the preferred MVR ranges apply to the average of the MVR of the individual components weighted by the mass fractions of the components in the mixture.

[0067] Such rubber-modified vinyl (co)polymers B are prepared by polymerization, preferably in the mass polymerization process, of B.1 80 to 95% by weight, preferably 83 to 93% by weight, particularly preferably 85 to 92% by weight, based on the rubber-modified vinyl (co)polymer B, of at least one vinyl monomer in the presence of B. 2 5 to 20 wt.%, preferably 7 to 17 wt.%, particularly preferably 8 to 15 wt.%, based on the rubber-modified vinyl (co)polymer B, of one or more rubber-elastic graft bases with glass transition temperatures < -50°C, preferably < -60°C, particularly preferably < -70°C, containing at least 50 % by weight, preferably at least 70 % by weight, particularly preferably 100 % by weight based on B.2, of structural units derived from 1,3-butadiene.

[0068] In the mass polymerization process preferably used to produce the rubber-modified vinyl (co)polymer B, both the polymerization of the vinyl monomers according to B.1 and grafting of the resulting vinyl (co)polymer onto the rubber-elastic graft base according to B.2 take place. Furthermore, in this reaction procedure, the formation of a disperse phase (i) consisting of (i.1) rubber particles grafted with vinyl (co)polymers made up of structural units according to B.1 and (i.2) vinyl (co)polymers made up of structural units according to B.1, enclosed in the rubber particles as a separate disperse phase, wherein this rubber-containing phase (i) is dispersed in a rubber-free vinyl (co)polymer matrix (ii) consisting of structural units according to B.1 which is not bound to the rubber particles and not enclosed in these rubber particles.

[0069] In contrast to the other vinyl (co)polymer components in component B, the rubber-free vinyl (co)polymer (ii) can be dissolved out using suitable solvents such as acetone.

[0070] The size of the disperse phase (i) in the rubber-modified vinyl (co)polymers B thus prepared is adjusted via the reaction conditions such as temperature and resulting viscosity of the polymer as well as shear by, for example, stirring.

[0071] The average particle size D50 is the diameter above and below which 50% by weight of the particles lie. Unless expressly stated otherwise in the present invention, it is determined for all components by ultracentrifuge measurement (W. Scholtan, H. Lange, Kolloid, Z. und Z. Polymere 250 (1972), 782-796).

[0072] The monomers B.1 are preferably mixtures consisting of B.1.1 60 to 85 parts by weight, particularly preferably 65 to 80 parts by weight, further preferably 70 to 78 parts by weight, in each case based on the sum of B.1.1 and B.1.2, styrene and B.1.2 15 to 40 parts by weight, particularly preferably 20 to 35 parts by weight, further preferably 22 to 30 parts by weight, in each case based on the sum of B.1.1 and B.1.2, acrylonitrile and optionally B.1.3 0-10 parts by weight, preferably 0-7 parts by weight, more preferably 0-5 parts by weight of methyl methacrylate or n-butyl acrylate, in each case based on 100 parts by weight as the sum of B.1.1 and B.1.2.

[0073] In a further preferred embodiment, the monomers B.1 are a mixture of 22 to 26 parts by weight of acrylonitrile and 74 to 78 parts by weight of styrene, which may optionally contain up to 10 parts by weight, particularly preferably up to 5 parts by weight, of n-butyl acrylate or methyl methacrylate, the sum of the parts by weight of styrene and acrylonitrile being 100 parts by weight.

[0074] B.1 is particularly preferably free from B.1.3, with the above-mentioned preferred ranges applying to B.1.1 and B.1.2.

[0075] Preferred grafting bases B.2 are diene rubbers containing butadiene, or mixtures of diene rubbers containing butadiene or copolymers of diene rubbers containing butadiene or mixtures thereof with other copolymerizable monomers (e.g. according to B.1.1 and B.1.2).

[0076] Pure polybutadiene rubber is particularly preferred as the graft base B.2. In another preferred embodiment, B.2 is styrene-butadiene block copolymer rubber.

[0077] Component B preferably has a polybutadiene content of 5 to 18 wt.%, more preferably 7 to 15 wt.%, in particular 8 to 13 wt.%.

[0078] Particularly preferred rubber-modified vinyl (co)polymers according to component B are bulk ABS polymers as described, for example, in DE-OS 2 035 390 (=US-PS 3 644 574) or in DE-OS 2 248 242 (=GB-PS 1 409 275) or in Ullmanns, Enzyklopädie der Technischen Chemie, Vol. 19 (1980), p. 280 ff.

[0079] Component B may optionally contain further rubber-modified graft polymers from components B.1 and B.2 produced by emulsion polymerization.

[0080] Preferably, the proportion of these further graft polymers based on component B is less than 30% by weight, particularly preferably less than 15% by weight, and in particular component B does not contain any such further graft polymers.

[0081] The vinyl (co)polymer (ii) which is not chemically bonded to the rubber base(s) B.2 and not enclosed in the rubber particles can, as previously described, be formed as a result of the production process during the polymerization of the graft polymers B. It is also possible that a portion of this vinyl (co)polymer (ii) which is not chemically bonded to the rubber base(s) B.2 and not enclosed in the rubber particles is formed in the rubber-modified vinyl (co)polymer according to component B as a result of its production in the mass polymerization process, and another portion is polymerized separately and added to component B as a constituent of component B. The proportion of the vinyl (co)polymer (ii), regardless of its origin, measured as the acetone-soluble fraction, in component B, based on component B, is preferably at least 50% by weight, particularly preferably at least 60% by weight, further preferably at least 70% by weight.

[0082] This vinyl (co)polymer (ii) has, in the rubber-modified vinyl (co)polymers according to component B, a weight-average molecular weight M w of 70 to 250 kg / mol, preferably of 130 to 200 kg / mol, in particular of 150 to 180 kg / mol.

[0083] The weight-average molecular weight M w of the vinyl (co)polymer (ii) in component B is measured in the present invention by gel permeation chromatography (GPC) in tetrahydrofuran against polystyrene as standard.

[0084] Component B is preferably free from alkali, alkaline earth, ammonium or phosphonium salts of saturated fatty acids having 8 to 22 carbon atoms, resin acids, alkyl and alkylarylsulfonic acids and fatty alcohol sulfates.

[0085] Component B preferably contains less than 100 ppm, more preferably less than 50 ppm, most preferably less than 20 ppm of alkali metal and alkaline earth metal ions.

[0086] Rubber-modified vinyl (co)polymers suitable as component B include Magnum™< 3404, Magnum™< 3904, Magnum™< 8434 and Magnum™< 8391 from Trinseo. Component C

[0087] Component C may optionally contain a polymer additive, a polymer blend partner or several other polymer additives and / or polymer blend partners.

[0088] The polymer additives or polymeric blend partners are preferably selected from the group consisting of lubricants and mold-release agents, stabilizers, colorants, compatibilizers, other impact modifiers different from component B, other polymeric components different from components A to C (for example functional blend partners) as well as fillers and reinforcing materials.

[0089] In a preferred embodiment, no fillers or reinforcing materials are included.

[0090] In a preferred embodiment, at least one polymer additive selected from the group consisting of lubricants and mold release agents and stabilizers is used as component C.

[0091] In a preferred embodiment, at least one representative selected from the group consisting of sterically hindered phenols, organic phosphites, and organic or inorganic Brönsted acids is used as stabilizer.

[0092] In a preferred embodiment, fatty acid esters, particularly preferably fatty acid esters of pentaerythritol or glycerol, are used as lubricants and mold release agents.

[0093] In a particularly preferred embodiment, at least one polymer additive selected from the group consisting of C8-C22 fatty acid esters of pentaerythritol, C8-C22 fatty acid esters of glycerol, tris(2,4-di-tert-butylphenyl) phosphite, 2,6-di-tert-butyl-4-(octadecanoxycarbonylethyl)phenol, tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyl diphosphonite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite and triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] is used as component C.

[0094] In a further embodiment, component C does not contain a rubber-modified vinyl (co)polymer prepared by emulsion polymerization.

[0095] Components A to C must be selected so that they are approved for use in plastics that come into contact with food. The relevant regional regulatory requirements must be met. Production of molding compounds and molded bodies

[0096] Thermoplastic molding compositions are produced from the compositions according to the invention containing or consisting of components A, B and C.

[0097] The thermoplastic molding compositions according to the invention can be prepared, for example, by mixing the respective constituents of the compositions in a known manner and melt compounding and melt extruding them at temperatures of preferably 200°C to 320°C, particularly preferably at 240 to 300°C, very particularly preferably at 260°C to 290°C in conventional units such as, for example, internal kneaders, extruders and twin-screw extruders.

[0098] This process is generally referred to as compounding in this application.

[0099] The term molding compound is therefore understood to mean the product that is obtained when the components of the composition are melt compounded and melt extruded.

[0100] The mixing of the individual components of the compositions can be carried out in a known manner both successively and simultaneously, both at approximately 20°C (room temperature) and at higher temperatures. This means that, for example, some of the components can be metered via the main feed of an extruder, and the remaining components can be added later in the compounding process via a side extruder.

[0101] Moldings are produced from the molding compounds according to the invention, for example, by injection molding, extrusion, and blow molding. Another processing method is the production of moldings by deep drawing from previously produced sheets or films.

[0102] It is also possible to dose the components of the composition directly into an injection molding machine or an extrusion unit and process them into molded bodies.

[0103] The articles according to the invention contain or consist of the described shaped bodies according to the invention.

[0104] In the articles according to the invention, the molded bodies according to the invention can be partially coated with other materials or bonded to other materials. For example, it is possible for the molded bodies according to the invention to be reinforced with metals, glass, ceramics, or other plastics or plastic composites, provided with handles made of other materials, or partially coated using methods familiar to those skilled in the art.

[0105] The articles according to the invention are therefore understood to mean articles which consist only of the shaped bodies according to the invention and also articles which, in addition to the shaped bodies, contain materials or coatings combined as described above.

[0106] During use of the article, the molded body consisting of the thermoplastic composition is partially or completely in direct contact with fats, oils, or fatty foods. This means that during use of the article, the food is in direct contact with the thermoplastic composition containing or consisting of components A to C.

[0107] Further embodiments 1 to 27 of the present invention are described below: 1. Shaped body selected from the group consisting of tableware, drinking vessels, cutlery, bowls, cans and other types of vessels, trays and molds, each for fatty foods. Consisting of a thermoplastic composition, characterized in that the thermoplastic composition contains or consists of the following components: A) Aromatic polycarbonate, B) Rubber-modified vinyl (co)polymer of B.1) 80 to 95 wt. %, based on the rubber-modified vinyl (co)polymer B, structural units derived from at least one vinyl monomer and B.2) 5 to 20 wt. %, based on the rubber-modified vinyl (co)polymer B, of one or more rubber-elastic graft bases with glass transition temperatures < -50°C containing at least 50 wt. %, based on B.2, of structural units derived from 1,3-butadiene, wherein the rubber-modified vinyl (co)polymer B (i) a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer comprising structural units according to B.1 and (i.2) vinyl (co)polymer also comprising structural units according to B.1 enclosed in the rubber particles as a separate disperse phase and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units according to B.1 which is not bound to the rubber particles and not enclosed in these rubber particles, wherein the disperse phase according to (i) has an average diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners 2.A molded body according to embodiment 1, wherein the molded body and the thermoplastic composition meet the regulatory requirements for food contact applications in at least one country selected from the group consisting of the countries of the European Union, the European countries not belonging to the European Union, the United States of America, Russia, China, Mexico, Japan, South Korea, Taiwan, Canada, Brazil, and Thailand. 3. A molded body according to embodiment 1 or 2, wherein the molded body is suitable for contact with fats, oils, or fatty foods having a temperature greater than 30°C. 4. A molded body according to any one of the preceding embodiments, wherein, in its application, the molded body is in contact with fats, oils, or fatty foods having a temperature greater than 30°C. 5. A molded body according to any one of the preceding embodiments, wherein the molded body is a casting mold. 6.Molded body according to embodiment 5, wherein the casting mold is a chocolate casting mold. 7. Molded body according to one of the preceding embodiments, wherein component A is an aromatic polycarbonate based exclusively on bisphenol A. 8. Molded body according to one of the preceding embodiments, wherein component A has a weight-average molecular weight M w (determined by gel permeation chromatography (GPC) in methylene chloride with polycarbonate as standard) of 24,000 to 32,000 g / mol. 9. Molded body according to one of the preceding embodiments, wherein component B.1 is a mixture of structural units derived from styrene and acrylonitrile, optionally additionally containing structural units derived from butyl acrylate or methyl methacrylate, and component B.2 is selected from at least one representative of the group consisting of polybutadiene rubber and styrene-butadiene (block) copolymer rubber. 10.Molded body according to embodiment 9, wherein component B.1 is a mixture of structural units derived from styrene and acrylonitrile and component B.2 is a pure polybutadiene rubber. 11. Molded body according to any of the preceding embodiments, comprising 85 to 92% by weight of B.1 and 8 to 15% by weight of B.2, based in each case on B. 12. Molded body according to any of the preceding embodiments, wherein the disperse phase according to (i) has an average diameter D50 measured by ultracentrifugation of 0.7 to 1.2 µm. 13. Molded body according to any of the preceding embodiments, wherein component B has a polybutadiene content of 8 to 13% by weight. 14. Molded body according to any of the preceding embodiments, wherein component B does not contain a rubber-modified vinyl (co)polymer prepared by emulsion polymerization. 15.Shaped body according to one of the preceding embodiments, wherein component C does not contain a rubber-modified vinyl (co)polymer produced by emulsion polymerization. 16. Shaped body according to one of the preceding embodiments, wherein component B is free from alkali, alkaline earth, ammonium, or phosphonium salts of saturated fatty acids having 8 to 22 carbon atoms, resin acids, alkyl- and alkylarylsulfonic acids, and fatty alcohol sulfates. 17. Shaped body according to one of the preceding embodiments, wherein component B contains less than 20 ppm of alkali metal and alkaline earth metal ions. 18. Shaped body according to one of the preceding embodiments, wherein component B is produced by bulk polymerization. 19. Shaped body according to one of the preceding embodiments, wherein as component C at least one polymer additive selected from the group consisting of C8-C22 fatty acid esters of pentaerythritol, C8-C22 fatty acid esters of glycerol, tris(2,4-di-tert.-butyl-phenyl) phosphite, 2,6-di-tert-butyl-4-(octadecanoxycarbonylethyl)phenol, tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyl diphosphonite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite and triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] is used. 20. Shaped body according to one of the preceding embodiments, wherein the thermoplastic composition contains 30-90 wt.% of component A, 10-70 wt.% of component B, 0-20 wt.% of component C. 21. Shaped body according to one of the preceding embodiments, wherein the thermoplastic composition contains 50-80 wt.% of component A, 15-45 wt.% of component B, 0.5-5 wt.% of component C. 22. Shaped body according to one of the preceding embodiments, wherein the thermoplastic composition contains 60-75 wt.% of component A, 24-39 wt.% of component B, and 0.1-1 wt.% of component C. 23.Shaped body according to one of the previous embodiments, wherein the thermoplastic composition consists of components A, B and C. 24. Process for producing a shaped fat or fatty foodstuff, comprising the steps of a) heating the fat or fatty foodstuff above its melting point, b) filling the molten fat or fatty foodstuff into a shaped body 1 according to one of the previous embodiments 5 to 23, c) cooling the fat or fatty foodstuff below its melting point and d) demolding the shaped article produced from the fat or fatty foodstuff in process steps a) to c) from the shaped body. 25. Use of a thermoplastic composition containing or consisting of A) aromatic polycarbonate, B) rubber-modified vinyl (co)polymer from B.1) 80 to 95 wt.-%, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5 to 20 wt.%, based on the rubber-modified vinyl (co)polymer B, of one or more rubber-elastic graft bases with glass transition temperatures < -50°C containing at least 50 wt.%, based on B.2, of structural units derived from 1,3-butadiene, where the rubber-modified vinyl (co)polymer B (i) has a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer of structural units according to B.1 and (i.2) vinyl (co)polymer enclosed in the rubber particles as a separate disperse phase, likewise comprising structural units according to B.1 and (ii) a disperse phase not bound to the rubber particles and not enclosed in these rubber particles rubber-free vinyl (co)polymer matrix consisting of structural units according to B.1, wherein the disperse phase according to (i) has an average diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners for producing a shaped body as part of an article selected from the group consisting of containers for packaging, serving, storing and / or transporting fats, oils or fatty foods, tools for consuming fats, oils or fatty foods, tools for producing, preparing, shaping and processing fats, oils or fatty foods and parts of machines for producing, preparing, shaping and processing fats, oils or fatty foods, wherein the shaped body is in direct contact with the fats, oils or fatty foods when the article is used. 26. Use according to embodiment 25, wherein the composition contains 60-75 wt.-% of component A, 24-39 wt.% of component B and 0.1-1 wt.% of component C, and wherein component B.1 is a mixture of styrene and acrylonitrile and component B.2 is a pure polybutadiene rubber, and wherein component B is free from alkali, alkaline earth, ammonium or phosphonium salts of saturated fatty acids having 8 to 22 carbon atoms, resin acids, alkyl and alkylarylsulfonic acids and fatty alcohol sulfates, and wherein component B contains less than 20 ppm of ions of alkali metals and alkaline earth metals, and wherein as component C at least one polymer additive selected from the group consisting of C8-C22 fatty acid esters of pentaerythritol, C8-C22 fatty acid esters of glycerol, tris(2,4-di-tert.-butylphenyl) phosphite, 2,6-Di-tert.-butyl-4-(octadecanoxycarbonylethyl)phenol, tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyl diphosphonite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite and triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate]. 27. Use of an article containing or consisting of a molded body consisting of a thermoplastic composition containing or consisting of A) aromatic polycarbonate, B) rubber-modified vinyl (co)polymer comprising B.1) 80 to 95% by weight, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5 to 20% by weight, based on the rubber-modified vinyl (co)polymer B, of one or more rubber-elastic graft bases with glass transition temperatures < -50°C containing at least 50% by weight, based on B.2, on structural units derived from 1,3-butadiene, wherein the rubber-modified vinyl (co)polymer B (i) has a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer comprising structural units according to B.1 and (i.2) vinyl (co)polymer enclosed in the rubber particles as a separate disperse phase, also comprising structural units according to B.1 and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units according to B. which is not bound to the rubber particles and not enclosed in these rubber particles.1, wherein the disperse phase according to (i) has an average diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners for the transport, packaging, storage, treatment, production, preparation, processing and shaping of fats, oils or fatty foods, wherein the shaped body is in direct contact with the fats, oils or fatty foods. . Examples Component A1:

[0108] Linear polycarbonate based on bisphenol A with a weight-average molecular weight MW of 28,000 g / mol (determined by GPC at room temperature in methylene chloride against a BPA-PC standard). Component A2:

[0109] Linear polycarbonate based on bisphenol A with a weight-average molecular weight MW of 25,000 g / mol (determined by GPC at room temperature in methylene chloride against a BPA-PC standard). Component A3:

[0110] Linear polycarbonate based on bisphenol A with a weight-average molecular weight MW of 19,000 g / mol (determined by GPC at room temperature in methylene chloride against a BPA-PC standard). Component B-1:

[0111] An acrylonitrile-butadiene-styrene (ABS) polymer produced by a bulk polymerization process, comprising a disperse phase of polybutadiene-containing rubber particles grafted with styrene-acrylonitrile copolymer, containing styrene-acrylonitrile copolymer enclosed as a separate disperse phase, and a styrene-acrylonitrile copolymer matrix that is not chemically bonded to the rubber particles and not enclosed within the rubber particles. Component B has an A:B:S ratio of 23:10:67 wt.% and a gel content, determined as the acetone-insoluble fraction, of 20 wt.%. The acetone-soluble fraction of the styrene-acrylonitrile copolymer in component B is 80 wt.%, based on component B, and has a weight-average molecular weight Mw (measured by GPC in tetrahydrofuran as solvent with polystyrene as standard) of 165 kg / mol. The average particle size of the dispersed phase D50, measured by ultracentrifugation, is 0.85 µm.The melt flow rate (MVR) of component B1, measured according to ISO 1133 (version of 2012) at 220°C with a punch load of 10 kg, is 6.7 ml / 10 min. Component B-2:

[0112] Precompound of 50 wt.% of an ABS-type graft polymer, produced by emulsion polymerization, with an AB:S ratio of 12:56:32 wt.% and 50 wt.% of a styrene-acrylonitrile copolymer, produced by bulk polymerization, with a styrene-acrylonitrile ratio of 72:28 wt.% and with a weight-average molecular weight Mw of 100 kg / mol, measured by GPC with polystyrene as standard in dimethylformamide at 20°C. Component C1:

[0113] Pentaerythritol tetrastearate Component C2:

[0114] Irganox™< 1076 (BASF, Ludwigshafen, Germany) 2,6-Di-tert.-butyl-4-(octadecanoxycarbonylethyl)phenol Production and testing of the molding compositions according to the invention

[0115] The components were mixed under Good Manufacturing Practice (GMP) conditions on a ZSK-70 MC twin-screw extruder from Werner & Pfleiderer at a melt temperature of 260°C and under a vacuum of 100 mbar (absolute).

[0116] The molded bodies were manufactured at melt temperatures of 260°C and 290°C and, in both cases, at a mold temperature of 80°C on an Arburg 270 E injection molding machine.

[0117] The melt flow rate (MVR) was determined according to ISO 1133 (version of 2012) at 260°C with a punch load of 5 kg after a 5-minute residence time.

[0118] The IZOD notched impact strength was determined at 23°C according to ISO 180-1A (1982 version) on ten test specimens measuring 80 mm x 10 mm x 4 mm and is given in Table 1 as the average of ten individual measurements. The test specimens were manufactured at a melt temperature of 260°C.

[0119] The Vicat B / 120, as a measure of heat distortion temperature, was determined according to ISO 306 (2013 version) on test specimens measuring 80 mm x 10 mm x 4 mm with a punch load of 50 N and a heating rate of 120°C / h. The test specimens were manufactured at a melt temperature of 260°C.

[0120] The melt viscosity as a measure of melt flowability was determined according to ISO 11443 (version of 2014) at temperatures of 260°C and 300°C, in both cases at a shear rate of 1000 s -1<.

[0121] The stress crack resistance (ESC) in rapeseed oil served as a measure of the resistance of the molded articles to contact with fats, oils, and fatty foods. The time until stress crack-induced fracture failure of a test specimen measuring 80 mm x 40 mm x 4 mm, injection-molded under the previously described conditions, was determined at room temperature. The test specimen was subjected to an external edge fiber strain of 2.4% using a clamping template and completely immersed in the rapeseed oil. This measurement was performed in accordance with DIN EN ISO 22088 (2006 version).

[0122] The relative percentage change in the melt flow rate MVR (delta MVR) serves as a measure of the hydrolysis resistance of the molded bodies. delta MVR = 100 × MVR nach Lagerung − MVR vor Lagerung / MVR vor Lagerung , The MVR is measured according to ISO 1133 (2012 version) at 260°C with a 5 kg punch load before and after seven days of storage at 95°C and 100% relative humidity. In our case, the storage was carried out on granules.

[0123] The surface gloss was measured in reflection at viewing angles of 20° and 60° using a Haze-Gloss glossmeter from BYK-Gardner GmbH (Geretsried, Germany) according to DIN 67530 (1982 version) on test specimens measuring 60 mm x 40 mm x 4 mm. A highly polished injection mold was used to produce the test specimens. The test specimens were manufactured at a melt temperature of 260°C.

[0124] The tensile modulus of elasticity, as a measure of stiffness, was determined according to ISO 527 (1996 version) at room temperature. The test specimens were manufactured at a melt temperature of 260°C.

[0125] According to the definition in COMMISSION REGULATION (EU) No 10 / 2011 of 14 January 2011 on plastic materials and articles intended to come into contact with food, total migration is understood to be the quantity of non-volatile substances released from a material or article into food simulants. Total migration was determined in accordance with DIN EN 1186-14 (2002 version) using test bars measuring 80 mm x 10 mm x 4 mm in two hours of complete contact with a) isooctane and b) ethanol (95% by volume) as food simulants at 70°C. For this purpose, each test bar with a total surface area of ​​0.16 dm2 was completely immersed in 37 ml of the food simulant. The test specimens were produced at a melt temperature of 260°C.

[0126] To simulate the influence of polycarbonate compositions on the properties of different foods with which molded articles made from these polycarbonate compositions come into direct contact when used in articles containing such molded articles, 100 g of granules from compositions 1 and V5 were stored for 2 days at room temperature (RT) in 100 g of different food simulant media. After storage, the haze value (turbidity) of the decanted media used was measured according to ISO 14792 (version 1999) using a Perkin Elmer Lambda 950. A higher haze (turbidity) value in the same medium indicates greater migration from the granules into the medium and thus a stronger influence on the food properties, which is undesirable in food contact applications. The media used simulate different types of food.

[0127] In a similar test, the migration behavior was simulated under conditions such as those encountered during the production of a molded fat or fatty food - such as a chocolate mold - using a casting mold.

[0128] For this purpose, 30 g of granules of samples 1, V2 and V5 were stored in 30 g of isooctane heated to 70°C in a glass flask with stirring for 2 hours. The isooctane was then decanted and the haze (turbidity) value of the decanted food simulant was measured according to ISO 14792 (version 1999) using a Perkin Elmer Lambda 950. Table 1: Compositions and their properties Components [parts by weight] 1 V2 V3 V4 A1 70 100 A2 100 A3 100 B-1 30 C1 0,3 C2 0,1 Characteristics ESC (time to break) [h] >24 >24 <0,01 Melt temperature in injection molding: 260°C ESC (time to break) [h] 2,5 0,5 Melt temperature in injection molding: 290°C Notched impact strength [kJ / m 2< ] 55 68 Vicat B / 120 [°C] 133 146 MVR [ml / 10 min] 15 14 Melt viscosity (260°C) [Pa s] 243 735 546 260 Melt viscosity (300°C) [Pa s] 241 205 Tensile modulus of elasticity [MPa] 2316 2324 Hydrolysis resistance (delta MVR) [%] 8 Gloss level (20°) 43 201 Gloss level (60°) 84 177 Total migration in Isooctan < 10 mg / dm 2 < not measured Total migration in ethanol (95%) < 10 mg / dm 2 < not measured

[0129] The data in Table 1 show that composition 1 according to the invention fulfills the technical objective. It is characterized by improved melt flowability compared to pure polycarbonate with a molecular weight corresponding to that of component A in the inventive composition (V2). The moldings produced exhibit good oil resistance and a lower gloss level, while maintaining mechanical properties similar to those of a molding made from pure polycarbonate. If the processing temperature is increased to achieve similar melt flowability in injection molding as in the inventive composition, the resulting moldings exhibit significantly poorer stress cracking resistance to oil.Compared to pure polycarbonate with a lower molecular weight, which has a similar melt flowability to the composition according to the invention (V4), the composition according to the invention has a significantly better stress crack resistance to oil of the molded articles produced by injection molding under comparable conditions. Table 2: Compositions and their properties Components [parts by weight] 1 V2 V5 A1 70 100 70 B-1 30 B-2 30 C1 0,3 0,3 C2 0,1 0,1 Characteristics Haze [%] 2,68 0,13 Mixture of 90 vol% water and 10 vol% ethanol, 2 days at RT Haze [%] 5,53 0,21 Mixture of 50 vol% water and 50 vol% ethanol, 2 days at RT Haze [%] 0,44 0,27 Mixture of 97 wt% water and 3 wt% acetic acid, 2 days at RT Haze [%] 0,19 0,31 Isooctane, 2 days at RT Haze [%] 0,34 0,34 0,39 Isooctane, 2 hours at 70 °C

[0130] The data in Table 2 show that Compositions 1 and V5 affect the properties of the various food simulant media in significantly different ways, even though both compositions are comparable in terms of the proportions of polycarbonate, ABS, and additives. The haze values ​​of the aqueous food simulants are significantly lower after contact with Composition V5 than after contact with Composition 1, meaning that the properties of these aqueous simulants are significantly less affected by Composition V5 than by Composition 1 according to the invention. In isooctane, however, which serves as a simulant for fatty foods, the turbidity is significantly lower after contact with Composition 1 according to the invention than after contact with Composition V5.It can be concluded that composition 1 is more suitable for use in contact with fatty foods, while composition V5 is more suitable for contact with water-containing foods such as coffee.

[0131] Even at higher temperatures and shorter contact times between the food simulant and the granules, isooctane as a food simulant for fats and fatty foods with Composition 1 according to the invention exhibits lower haze than with Composition V5. This also suggests better suitability for use in the production of molded fats and fatty foods, such as chocolate molds. Although Composition V2 exhibits equally good performance in this regard as Composition 1, it has the disadvantage shown in Table 1 of a significantly higher melt viscosity and an undesirably high degree of gloss for use in the production of chocolate molds.

Claims

1. Molded body selected from the group consisting of crockery, drinking vessels, cutlery, bowls, pots and other types of vessels, trays and molds in each case for fat-containing foodstuffs consisting of a thermoplastic composition, characterized in that the thermoplastic composition contains or consists of the following components: A) aromatic polycarbonate, B) rubber-modified vinyl (co)polymer composed of B.1) 80% to 95% by weight, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5% to 20% by weight, based on the rubber-modified vinyl (co)polymer B, of one or more elastomeric graft substrates having glass transition temperatures < -50°C determined by differential scanning calorimetry according to DIN EN 61006, 1994 version, at a heating rate of 10 K / min by the tangent method and containing at least 50% by weight based on B.2 of structural units derived from 1,3-butadiene, wherein the rubber-modified vinyl (co)polymer B contains (i) a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer composed of structural units of B.1 and (i.2) vinyl (co)polymer likewise composed of structural units of B.1 enclosed in the rubber particles as a separate disperse phase and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units of B.1 which is not bonded to the rubber particles and is not enclosed in these rubber particles, wherein the disperse phase of (i) has a median diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners.

2. Molded body according to Claim 1, wherein the molded body is suitable for contact with fats, oils or fat-containing foodstuffs having a temperature of greater than 30°C.

3. Molded body according to Claim 1 or 2, wherein the molded body is a mold.

4. Molded body according to Claim 3, wherein the mold is a chocolate mold.

5. Molded body according to any of the preceding claims, wherein component A is an aromatic polycarbonate based exclusively on bisphenol A.

6. Molded body according to any of the preceding claims, wherein the component B.1 is a mixture of structural units derived from styrene and acrylonitrile, optionally additionally containing structural units derived from butyl acrylate or methyl methacrylate, and the component B.2 is selected from at least one representative of the group consisting of polybutadiene rubber and styrenebutadiene (block) copolymer rubber.

7. Molded body according to Claim 6, wherein the component B.1 is a mixture of structural units derived from styrene and acrylonitrile and the component B.2 is a pure polybutadiene rubber.

8. Molded body according to any of the preceding claims, wherein the component B is free from alkali metal, alkaline earth metal, ammonium or phosphonium salts of saturated fatty acids having 8 to 22 carbon atoms, resin acids, alkyl- and alkylarylsulfonic acids and fatty alcohol sulfates.

9. Molded body according to any of the preceding claims, wherein the component B contains less than 20 ppm of ions of alkali metals and alkaline earth metals.

10. Molded body according to any of the preceding claims, wherein at least one polymer additive selected from the group consisting of C8-C22 fatty acid esters of pentaerythritol, C8-C22 fatty acid esters of glycerol, tris(2,4-di-tert-butylphenyl)phosphite, 2,6-di-tert-butyl-4-(octadecanoxycarbonylethyl)phenol, tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite and triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] is employed as component C.

11. Article containing or consisting of a molded body according to any of the preceding claims.

12. Process for producing a molded fat or fat-containing foodstuff comprising the steps of a) heating the fat or fat-containing foodstuff above its melting point, b) filling the molten fat or fat-containing foodstuff into a molded body according to any of the preceding Claims 3 to 10, c) cooling the fat or fat-containing foodstuff below its melting point and d) demolding the molding produced from the fat or fat-containing foodstuff in process steps a) to c) from the article.

13. Use of a thermoplastic composition containing or consisting of A) aromatic polycarbonate, B) rubber-modified vinyl (co)polymer composed of B.1) 80% to 95% by weight, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5% to 20% by weight, based on the rubber-modified vinyl (co)polymer B, of one or more elastomeric graft substrates having glass transition temperatures < -50°C determined by differential scanning calorimetry according to DIN EN 61006, 1994 version, at a heating rate of 10 K / min by the tangent method and containing at least 50% by weight based on B.2 of structural units derived from 1,3-butadiene, wherein the rubber-modified vinyl (co)polymer B contains (i) a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer composed of structural units of B.1 and (i.2) vinyl (co)polymer likewise composed of structural units of B.1 enclosed in the rubber particles as a separate disperse phase and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units of B.1 which is not bonded to the rubber particles and is not enclosed in these rubber particles, wherein the disperse phase of (i) has a median diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners for producing a molded body as part of an article selected from the group consisting of containers for packaging, for serving, for storage and / or for transport of fats, oils or fat-containing foodstuffs, tools for consumption of fats, oils and fat-containing foodstuffs, tools for production, preparation, shaping and processing of fats, oils and fat-containing foodstuffs and parts of machines for production, preparation, shaping and processing of fats, oils and fat-containing foodstuffs, wherein during use of the article the molded body is in direct contact with the fats, oils and fat-containing foodstuffs.

14. Use according to Claim 13, wherein the composition comprises 60-75% by weight of the component A, 24-39% by weight of the component B and 0.1-1% by weight of the component C, and wherein the component B.1 is a mixture of styrene and acrylonitrile and the component B.2 is a pure polybutadiene rubber, and wherein the component B is free from alkali metal, alkaline earth metal, ammonium or phosphonium salts of saturated fatty acids having 8 to 22 carbon atoms, resin acids, alkyl- and alkylarylsulfonic acids and fatty alcohol sulfates, and wherein the component B contains less than 20 ppm of ions of alkali metals and alkaline earth metals, and wherein at least one polymer additive selected from the group consisting of C8-C22 fatty acid esters of pentaerythritol, C8-C22 fatty acid esters of glycerol, tris(2,4-di-tert-butylphenyl)phosphite, 2,6-di-tert-butyl-4-(octadecanoxycarbonylethyl)phenol, tetrakis(2,4-di-tert-butylphenyl)-4,4-biphenyldiphosphonite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite and triethylene glycol bis[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate] is employed as component C.

15. Use of an article containing or consisting of a molded body consisting of a thermoplastic composition containing or consisting of A) aromatic polycarbonate, B) rubber-modified vinyl (co)polymer composed of B.1) 80% to 95% by weight, based on the rubber-modified vinyl (co)polymer B, of structural units derived from at least one vinyl monomer and B.2) 5% to 20% by weight, based on the rubber-modified vinyl (co)polymer B, of one or more elastomeric graft substrates having glass transition temperatures < -50°C determined by differential scanning calorimetry according to DIN EN 61006, 1994 version, at a heating rate of 10 K / min by the tangent method and containing at least 50% by weight based on B.2 of structural units derived from 1,3-butadiene, wherein the rubber-modified vinyl (co)polymer B contains (i) a disperse phase consisting of (i.1) rubber particles grafted with vinyl (co)polymer composed of structural units of B.1 and (i.2) vinyl (co)polymer likewise composed of structural units of B.1 enclosed in the rubber particles as a separate disperse phase and (ii) a rubber-free vinyl (co)polymer matrix consisting of structural units of B.1 which is not bonded to the rubber particles and is not enclosed in these rubber particles, wherein the disperse phase of (i) has a median diameter D50 measured by ultracentrifugation of 0.3 to 2.0 µm, C) optionally at least one further component selected from polymer additives and polymeric blend partners for transport, packaging, storage, treatment, production, preparation, processing and shaping of fats, oils and fat-containing foodstuffs, wherein the molded body is in direct contact with the fats, oils and fat-containing foodstuffs.