WO2000073386A1

WO2000073386A1 - Polycarbonate molding compounds for producing articles with reduced dust attraction

Info

Publication number: WO2000073386A1
Application number: PCT/EP2000/004573
Authority: WO
Inventors: Martin Döbler; Axel Brenner; Peter Bier; Wolfgang Ebert; Walter Köhler
Original assignee: Bayer Aktiengesellschaft
Priority date: 1999-06-01
Filing date: 2000-05-19
Publication date: 2000-12-07
Also published as: EP1187879A1; MXPA01012383A; CN1353742A; CA2374444A1; JP2003501508A; IL146173A0; AU5069200A; DE19925125A1; BR0011245A; HK1046921A1; KR20020008205A

Abstract

The invention relates to polycarbonate molding compounds for synthetic articles which contain at least one antioxidant and one mold release agent and which have a reduced tendency to attract dust.

Description

Polycarbonate molding compounds for the production of articles with reduced dust accumulation

The invention relates to transparent polycarbonate molding compositions for plastic articles which contain at least one thermal stabilizer and a mold release agent and which have a lower tendency to accumulate dust.

The accumulation of dust is a widespread problem with molded plastic articles. See e.g. Saechtling, plastic paperback, 26th edition,

Hanser Verlag, 1995, Munich, pp. 140 f. For example, dust is deposited on molded parts during storage under technical conditions. Dust deposits on transparent moldings are particularly annoying and restrict the function. An important technical thermoplastic is polycarbonate. It is used in transparent settings, for example for the area of optical data storage,

Used in electrical engineering, automotive, construction, liquid containers or other optical applications. For all of these uses of polycarbonate, dust accumulation is undesirable and can impair the function.

A known method to reduce dust accumulation on plastic bodies is through the use of antistatic agents. Antistatic agents are described in the literature for thermoplastics (see e.g. Gächter, Müller, Plastic Additives, Hanser Verlag, Munich, 1996, p. 749 ff), which restrict dust accumulation. These antistatic agents improve the electrical conductivity of the plastic molding compounds and thus dissipate surface charges that form during manufacture and use. As a result, dust particles are no longer attracted and consequently there is less dust accumulation.

A distinction is made between internal and external antistatic agents. An external one

Antistatic is applied to the molded plastic body after processing, an internal antistatic is added as an additive during processing. For economic reasons, the use of internal antistatic agents is usually desirable, since no further steps are necessary to apply the antistatic agent after processing. So far, however, no internal antistatic has been known for transparent settings of polycarbonate, which effectively limits the accumulation of dust and at the same time does not impair the advantageous properties of this material such as high transparency, low haze and high impact strength.

A disadvantage of adding antistatic agents is that, like any additive added, they increase the production cost of an article. Therefore, it would generally be desirable to use as few additives (number and amount) as possible.

For aesthetic reasons, the patterns of the dust figures are also large

Importance. In the case of molding compositions which have hitherto been customary, disturbing tree-shaped structures often occur or round structures with dimensions of 1-20 mm. Such fine-grained dust figures catch the eye because they show great contrasts between dust-covered and almost dust-free areas. It would be desirable to use molding compounds which tend to form large-area dust patterns on the surface or cover them as evenly as possible.

Surprisingly, suitable additive combinations have been found, by means of which the overall dust accumulation can be greatly restricted and with which, in addition, delicate dust figures can be largely avoided. It is not necessary to add antistatic agents.

The object was achieved according to the invention by a thermoplastic molding composition which, as an amorphous thermoplastic polymer, contains polycarbonate and at least one antioxidant and a mold release agent, the antioxidant comprising at least one stabilizer from the group TPP, tetrakis (2,4-di-tert-butylphenyl) -4,4'-biphenylene-diphosphonite, Irganox 1222, octadecyl-3- (3 ', 5 ^' -di-tert-butyl-4'-hydroxyphenyl) propionate, Irganox ^® HP2921, Anox ^® TB331, TB123 Anox ^® or a mixture thereof, preferably in amounts 0001-1 wt .-%, more preferably is between 0.01 and 0.1 wt .-% contains

and the mold release agent at least one substance from the group

• The polyols esterified in whole or in part with a linear or branched fatty acid

wherein as polyols preferably glycerol, ethylene glycol, propylene glycol, pentaerythritol, dipentaerythritol or tripentaerythritol or fatty alcohols are used.

The following compounds are preferred mold release agents according to the invention:

Mono- and polyester of glycerol, pentaerythritol, dipentaerythritol, tripentaerythritol or diols, such as 1,3-propanediol or 1,2-ethanediol with branched or unbranched carboxylic acids with 1-30 carbon atoms, which can also be partially or completely fluorinated.

Carboxylic acids, in particular fatty acids, such as stearic acid or palmitic acid, and mixtures thereof are particularly preferred. Unsaturated fatty acids can optionally also be hydrogenated or epoxidized.

End group-modified oligoxides or polyethylene oxides or are also preferred

-propylene oxides or copolymers or -oligomers thereof. Suitable end groups are branched or unbranched carboxylic acids having 1-30 carbon atoms, which can also be completely or partially fluorinated.

Also preferred are mono- and polyesters of di- and polycarboxylic acids with branched or unbranched alcohols with 1-30 carbon atoms, which also can be completely or partially fluorinated. Esters of trimellitic acid are particularly preferred.

Very particularly preferred mold release agents are glycerol monostearate (GMS), triglycerides such as Grinstedt ^® PS 102 (Danisco, Braband, Denmark),

Pentaerythritol tetrastearate (PETS), polyol fatty acid esters such as Loxiol ^® EP218 (Henkel KG, Düsseldorf, Germany), isocetyl stearyl stearate, 1,3-propanediol esterified with natural fatty acid such as Grinstedt ^® PGMS SPV (Danisco, Braband, Denmark), and epoxidized oils, such as soybean oil or linseed oil, which, for example under the name Edenol ^® B35 and B316 from Henkel KG, Dusseldorf, Germany, buy, and trimellitic of monocarboxylic acids such as Edenol ^® W31 OS Henkel KG, Dusseldorf, Germany. Mixtures of the mold release agents described above are also very particularly preferred.

The mold release agents are preferred in amounts of between 0.001 each

% By weight and 5% by weight, preferably 0.01% by weight and 1% by weight, preferably between 0.1-1% by weight and very particularly preferably between 0.2 and 0.6% by weight.

Antioxidants suitable according to the invention are e.g. in EP 0 839 623 AI and EP

0 500 496 AI described.

Triarylphosphines such as triphenylphosphine (TPP) or aromatic phosphine substituted with linear or branched alkyl chains with 1-30 C atoms are particularly suitable. Also suitable are aliphatic or aromatic phosphites, such as, for example, tris (2,4-di-tert.butylphenyl) phosphite, hindered phenols, such as, for example, ocadecyl-3- (3 ^' , 5 ^' -di-tert-butyl-4 ^' Hydroxyphenyl) propionate, other compounds such as thioethers, for example distearyl 3,3 ^' thiodipropionate, organic phosphates such as TOF (tris (2-ethylhexyl) phosphate), silicones such as Dynasilan ^® Glymo, and mixtures thereof. Very particularly preferred TOF, triphenylphosphine, Irganox ^® 1222 (diethyl ((3,5-bis (l, l-dimethylethyl) -4-hydroxyphenyl) methyl) phosphonate product of Ciba Specialty Chemicals Basel), tetrakis (2,4-di tert-butylphenyl) -4,4'-biphenylene diphosphonite (Irgafos ^® PEPQ), octadecyl-3- (3 ', 5 ^' -di-tert-butyl-4'-hydroxyphenyl) propionate (Irganox ^® 1076), Tris (2,4-di-tert-butyl-phenyl) phosphite (Irgafos ^® 168) and Anox ^® TB123 (mixture of octadecyl-3- (3 ', 5'-di-tert-butyl-4'-hydroxyphenyl ) propionate, tris (2,4-di-tert-butyl-phenyl) phosphite and distearyl-3,3'-thiodipropionate) (product of Great Lakes Chemical Corp. Lafayette, IN, USA) Anox ^® TB331 (mixture of Tris (2,4-di-tert-butyl-4-hydroxyhydrocinnamate) methane, tris (2,4-di-tert-butyl-phenyl) phosphite and distearyl-3,3'-thiodipropionate) (product of the Great Lakes Chemical Corp. Lafayette, iN, USA), and Irganox ^® HP2921 (mixture of octadecyl 3- (3 ', 5' -di-tert-butyl-4 '- hydroxyphenyl) propionate, tris (2,4-di- tert-butyl ph enyl) phosphite and Irganox ^® HP136 5,7-di-tert-butyl-3- (3,4-dimethylphenyl) -2 (3H) -benzofuranone (product of Ciba Specialty Chemicals, Basel).

The antioxidants are preferably used in amounts of between 0.001% by weight and 10% by weight, preferably between 0.01% by weight and 0.1% by weight and very particularly preferably between 0.02 and 0.06% by weight.

According to the invention, suitable UV absorbers are also optionally added, these are e.g. in EP 0 839 623 AI and EP 0 500 496.

Derivatives of benzotriazole, derivatives of benzophenone, and u. U. other connections such as arylated cyanoacrylates.

According to the invention particularly preferably suitable are hydroxy-benzotriazoles, such as 2- (3 ^', 5-'Bis- (l, l-dimethylbenzyl) ^-2' hydroxy-phenyl) benzotriazole (Tinuvin 234, Ciba Specialty Chemicals, Basel), 2- (2'-Hydroxy-5 '- (tert-octyl) phenyl) benzotriazole (Tinuvin ^® 329, Ciba Specialty Chemicals, Basel), 2- (2'-Hydroxy-3' - (2-butyl) -5 ^' -

(tert-butyl) phenyl) benzotriazole (Tinuvin ^® 350, Ciba Specialty Chemicals, Basel), Bis- (3- (2H-benzotriazolyl) -2-hydroxy-5-tert-octyl) methane, (Tinuvin ^® 360, Ciba Specialty Chemicals, Basel), 2- (4-hexoxy-2-hydroxyphenyl) -4,6- diphenyl-l, 3,5-triazine (Tinuvin 1577, Ciba Specialty Chemicals, Basel), and the benzophenone 2,4-dihydroxy-benzophenone (Chimasorb22 ^® , Ciba Specialty Chemicals, Basel).

The UV absorbers are preferred in amounts of in each case between 0.001% by weight and 10% by weight, preferably 0.01% by weight and 1% by weight, preferably between 0.1-1% by weight and very particularly preferably between 0.2 and 0.6 wt .-% used.

Optionally, other additives can be used, e.g. Flame retardants, fillers, foaming agents, dyes, pigments, optical brighteners and nucleating agents or the like known from the literature, preferably in amounts of up to 5% by weight, preferably 0.01 to 5% by weight, based on the mixture as a whole, particularly preferred 0.01 wt .-% to 1 wt .-% based on the amount of plastic is included. Mixtures of these additives are also suitable.

Of course, all common antistatic agents can also be added to the mixture without violating the inventive teaching. However, their use is not necessary. Suitable antistatic agents are in Gächter, Müller "Plastic Additives", 4 ^th Ed.

Munich 1996 called page 749 to 773.

Transparent thermoplastics are preferably used as the transparent plastic, particularly preferably the polymers of ethylenically unsaturated monomers and / or polycondensates of bifunctional reactive compounds.

Particularly suitable plastics are polycarbonates or copolycarbonates based on diphenols, the poly- or copolyacrylates and poly- or copolymethacrylates such as poly- or copolymethyl methacrylate, also as copolymers with styrene such as transparent polystyrene-acrylonitrile (SAN), furthermore transparent cycloolefms, Poly- or copolycondensates of terephthalic acid, such as poly- or copolyethylene terephthalate (PET or CoPET) or glycol-modified PET (PETG).

The expert achieves excellent results with polycarbonates or copolycarbonates.

Thermoplastic, aromatic polycarbonates in the sense of the present invention are both homopolycarbonates and copolycarbonates; the polycarbonates can be linear or branched in a known manner.

These polycarbonates are produced in a known manner from diphenols, carbonic acid derivatives, optionally chain terminators and optionally branching agents.

Details of the production of polycarbonates have been laid down in many patents for about 40 years. One example here is Schnell, "Chemistry and

Physics of Polycarbonates ", Polymer Reviews, Volume 9, Interscience Publishers, New York, London, Sydney 1964, on D. Freitag, U. Grigo, PR Müller, H. Nouvertne ', BAYER AG," Polycarbonates "in Encyclopedia of Polymer Science and Engineering, Volume 11, Second Edition, 1988, pages 648-718 and finally on Dres. U. Grigo, K. Kirchner and PR Müller "Polycarbonate" in Becker / Braun, Kunststoff-Handbuch,

Volume 3/1, polycarbonates, polyacetals, polyester, cellulose esters, Carl Hanser Verlag Munich, Vienna 1992, pages 117-299.

Diphenols suitable for the preparation of the polycarbonates are, for example, hydroquinone, resorcinol, dihydroxydiphenyls, bis (hydroxyphenyl) alkanes, bis (hydroxyphenyl) cycloalkanes, bis (hydroxyphenyl) sulfides, bis (hydroxyphenyl) ethers, Bis (hydroxyphenyl) ketones, bis (hydroxyphenyl) sulfones, bis (hydroxyphenyl) sulfoxides, α, α′-bis (hydroxyphenyl) diisopropylbenzenes, and also their ring-alkylated and ring-halogenated compounds. Preferred diphenols are 4,4'-dihydroxydiphenyl, 2,2-bis (4-hydroxyphenyl) propane, 2,4-bis (4-hydroxyphenyl) -2-methylbutane, 1,1-bis (4-hydroxyphenyl ) -p-diisopropylbenzene, 2,2-bis (3-methyl-4-hydroxyphenyl) propane, 2,2-bis (3-chloro-4-hydroxyphenyl) propane, bis (3,5 -dimethyl-4-hydroxyphenyl) methane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, bis (3,5-dimethyl-4-hydroxyphenyl) sulfone, 2, 4- bis- (3,5-dimethyl-4-hydroxyphenyl) -2-methylbutane, 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) -p-diisopropylbenzene, 2,2-bis- (3,5-dichloro-4-hydroxyphenyl) propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane and 1,1-bis (4-hydroxyphenyl) -3,3, 5-trimethylcyclohexane.

Particularly preferred diphenols are 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dichloro) -4-hydroxyphenyl) propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclohexane and 1,1-bis (4th -hydroxyphenyl) -3, 3,5-trimethylcyclohexane.

These and other suitable diphenols are e.g. in US Pat. Nos. 3,028,635, 2,999,835, 3,148,172, 2,991,273, 3,271,367, 4,982,014 and 2,999,846, in German Offenlegungsschriften 1,570,703, 2,063,050, 2,036,052 , 2 211 956 and 3 832 396, French Patent 1,561,518, in the monograph "H. Schnell, Chemistry and Physics of Polycarbonates, Interscience Publishers, New York 1964" and in Japanese Laid-Open Publications 62039/1986, 62040/1986 and 105550/1986.

In the case of homopolycarbonates, only one diphenol is used; in the case of copolycarbonates, several diphenols are used.

Suitable carbonic acid derivatives are, for example, phosgene or diphenyl carbonate.

Suitable chain terminators are both monophenols and monocarboxylic acids. Suitable monophenols are phenol itself, alkylphenols such as cresols, p-tert-

Butylphenol, pn-octylphenol, p-iso-octylphenol, pn-nonylphenol and p-iso- Nonylphenol, halophenols such as p-chlorophenol, 2,4-dichlorophenol, p-bromophenol and 2,4,6-tribromophenol, 2,4,6-triiodophenol, p-iodophenol, and mixtures thereof.

The preferred chain terminator is p-tert-butylphenol.

Suitable monocarboxylic acids are benzoic acid, alkylbenzoic acids and halogenated benzoic acids.

Preferred chain terminators are the phenols of the formula (I)

<Q -OH (I),

R

woπn

R is hydrogen, tert-butyl or a branched or unbranched C ₈ - and / or

Is C ₉ alkyl.

The amount of chain terminator to be used is 0.1 mol% to 5 mol%, based on moles of diphenols used in each case. The chain terminators can be added before, during or after phosgenation.

Suitable branching agents are the tri- or more than triftintional compounds known in polycarbonate chemistry, in particular those with three or more than three phenolic OH groups.

Suitable branching agents are, for example, phloroglucin, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -hepten-2, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) - heptane, 1, 3,5-tri- (4-hydroxyphenyl) benzene, 1,1,1-tri- (4-hydroxyphenyl) ethane, tri- (4-hydroxyphenyl) phenylmethane, 2,2-bis - [4,4-bis (4-hydroxyphenyl) cyclohexyl] propane, 2,4-bis (4-hydroxyphenyl-isopropyl) phenol, 2,6-bis (2-hydroxy-5'-methyl) -benzyl) -4-methyl- phenol, 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) propane, hexa- (4- (4-hydroxyphenylisopropyl) phenyl) orthoterephthalic acid ester, tetra- (4-hydroxyphenyl) - methane, tetra- (4- (4-hydroxyphenyl-isopropyl) phenoxy) methane and 1,4-bis (4 ', 4 "-dihydroxy-triphenyl) methyl) benzene as well as 2,4-dihydroxybenzoic acid, trimesic acid , Cyanuric chloride and 3,3-bis (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole.

The amount of branching agents which may be used is 0.05 mol% to 2 mol%, based in turn on moles of diphenols used in each case.

The branching agents can either be introduced with the diphenols and the chain terminators in the aqueous alkaline phase, or added dissolved in an organic solvent before the phosgenation. In the case of the transesterification process, the branching agents are used together with the diphenols.

All of these measures for the production of the thermoplastic polycarbonates are

Expert familiar.

To achieve improved compositions, it is possible that at least one additional additive usually present in thermoplastics, preferably poly- and copolycarbonates, such as e.g. Flame retardants, fillers, foaming agents, dyes, pigments, optical brighteners, transesterification catalysts and nucleating agents or the like, preferably in amounts of up to 5% by weight, preferably 0.01 to 5% by weight, based on the mixture as a whole, particularly preferably 0 , 01 wt .-% to 1 wt .-% based on the amount of plastic is included.

The polymer compositions obtained in this way can be converted into shaped objects, for example toy parts, but also fibers, foils, tapes, plates, multi-wall sheets, vessels, tubes and other profiles by the customary methods, such as hot pressing, spinning, extrusion or injection molding . The polymer compositions can also be processed into cast films. The invention therefore continues to apply the use of the polymer compositions according to the invention for the production of a shaped article. The use of multilayer systems is also of interest.

Here, the polymer composition according to the invention is applied in a thin layer to a shaped object made of a conventional polymer. The application can take place simultaneously or immediately afterwards with the shaping of the base body, e.g. by coextrusion or multi-component injection molding. The application can also be done on the finished molded body, e.g. by lamination with a film or by coating with a solution.

The polycarbonate molding compositions according to the invention can be processed into moldings by, for example, extruding the polycarbonates isolated in a known manner to give granules, and these granules, if appropriate after addition of the additives mentioned above, by injection molding to various articles in a known manner

Processed way.

The moldings made from the polycarbonate molding compositions according to the invention can be used within a broad spectrum, particularly where dust accumulation is undesirable for the reasons mentioned. The application is particularly suitable for optical data carriers, e.g. CDs, automotive components, e.g. Glazing elements, plastic lenses, also for use with extruded sheets, e.g. Solid sheets, double-wall sheets or multi-wall sheets, optionally also with one or more coextruded layers, as well as the use in injection molded parts, such as food containers, components of electrical appliances, in

Eyeglass lenses or ornaments.

The polycarbonate molding compositions according to the invention can also be used with conventional others

Polymers are mixed. Transparent plastics are particularly suitable. Transparent thermoplastics are preferred as transparent plastics used, particularly preferably the polymers of ethylenically unsaturated monomers and / or polycondensates of bi-functional reactive compounds.

Particularly suitable plastics for these mixtures are poly- or copolyacrylates and poly- or copolymethacrylates such as poly- or copolymethyl methacrylate, but also particularly copolymers with styrene such as transparent polystyrene-acrylonitrile (SAN), furthermore transparent cycloolefins, poly- or copolycondden- sate of terephthalic acid, such as poly- or copolyethylene terephthalate (PET or CoPET) or glycol-modified PET (PETG).

Examples

For the preparation of molding compositions or specimen, if not mentioned otherwise in the following, an additive-free, unstabilized polycarbonate (Makrolon ^® 2808 from Bayer AG, Leverkusen) with an average molecular weight of about 30,000 (Mw by GPC), solution viscosity: η = l , 293 at 340 ° C on a twin-screw extruder with the specified amount of additive compounded and then granulated. Rectangular sheets are then sprayed from this granulate (155 mm x 75 mm x 2 mm).

In order to be able to examine the dust accumulation in the laboratory test, the sprayed plates are exposed to an atmosphere with whirled up dust. A 2-1 beaker with an 80 mm long magnetic stirring bar with a triangular cross section is filled with the respective dust approx. 1 cm high. The dust is whirled up with the help of a magnetic stirrer. After stopping the stirrer, the

Test specimens exposed to this dust atmosphere for 7 sec. Depending on the test specimen used, more or less dust settles on the test specimen. The transmission and the turbidity are then determined in accordance with ASTM D 1003 using the Haze-Gard plus device from BYK-Gardner GmbH, D-82538 Geretsried. If the dust accumulation is uneven, the mean value is determined from several measurements. The transmission and the turbidity are measured at 18 points, which are evenly distributed on the rectangular plate in the form of a 6x3 grid. Coal dust (here 20 g activated carbon, Riedel-de Haen, Seelze, Germany, Article No. 18003) is used as dust

The weight increase of the plate after dusting is also measured. A conventional Mettler Toledo AE200 laboratory balance is used (Table 3).

The dust figures in Table 2 are assessed by the eye. Panels that have delicate dust figures or high contrasts are rated negative (-), those with uniform and large-scale dust figures are rated (+). Table 1:

Examples of additives which, when molded into Makrolon ^® 2808 based molding compounds, accumulate less dust

Table 2:

Examples of additives in molding compounds based on Makrolon ^® 2808, which when sprayed into plates form rather large-area dust figures (+ large-area dust figures, - delicate dust figures)

Table 3;

Weight increase of rectangular plates after dusting with coal dust

Tables 1-3 clearly show that moldings from the molding compositions according to the invention attract less dust, have better transmission after dusting and form optically more beautiful and larger-area dust figures than from conventional molding compositions.

Claims

claims

1. Polycarbonate molding compositions which contain at least one antioxidant and a mold release agent, characterized in that the antioxidant comprises at least one stabilizer from the group

TPP, tetrakis (2,4-di-tert-butylphenyl) -4,4'-biphenylene-diphosphonite,

Irganox 1222 octadecyl-3- (3 ', 5' -di-tert-butyl-4 'hydroxyphenyl) - propionate, Irganox ^® HP2921, Anox ^® TB331, Anox ^® TB 123 or a mixture thereof, preferably in amounts between 0.001 and 1

% By weight, particularly preferably between 0.01 and 0.1% by weight

and the mold release agent at least one substance from the group

whereby the polyols used are preferably glycerol, ethylene glycol, propylene glycol, pentaerythritol, dipentaerythritol or tripentaerythritol or fatty alcohols.

2. Polycarbonate molding compositions according to claim 1, characterized in that is used as mold release agents Ceraphyl ^® 494, GMS, Grinstedt ^® PGMS SPV, Loxiol ^® EP218, PETS, Isocetylstearylstearat, Edenol ^® B35, Edenol ^® B316 or a mixture thereof, preferably in amounts between 0.01 and 5

% By weight, particularly preferably between 0.1 and 1% by weight.

3. Polycarbonate molding compositions according to at least one of the preceding claims, characterized in that a mixture of PETS and Edenol or a mixture of Grinstedt and Edenol is used.

4. Polycarbonate molding compositions according to at least one of the preceding claims, characterized in that the UV stabilizer additionally contains at least one derivative of benzotriazole and / or at least one derivative of benzophenone.

5. Polycarbonate molding compositions according to claim 4, characterized in that as UV stabilizer 2- (2'-hydroxy-3 '- (2-butyl) -5' - (tert-butyl) phenyl) benzotriazole (Tinuvin® 350), 2- (2'-Hydroxy-5 '- (tert-octyl) phenyl) benzotriazole, bis (3- (2H-benzotriazolyl) -2-hydroxy-5-tert-octyl) methane, 2- (4-Hexoxy-2-hydroxyphenyl) -4,6-diphenyl-l, 3,5-triazine or a mixture thereof can be used, preferably in amounts between 0.01 and 10% by weight, particularly preferably between 0.1 and 1% by weight. -%.

6. Polycarbonate molding compositions according to at least one of the preceding claims, characterized in that additionally epoxidized oils, such as epoxidized

Linseed oil or epoxidized soybean oil or mixtures thereof are used, preferably in amounts between 0.01 and 10% by weight, particularly preferably between 0.1 and 1% by weight.

7. Polycarbonate molding compositions according to at least one of the preceding claims, characterized in that octadecyl-3- (3 ', 5' -di-tert-butyl-4 '-hydroxyphenyl) propionate (Irganox ^® 1076) is contained.

8. Polycarbonate molding compositions according to at least one of the preceding claims, characterized in that it also contains a commercially available antistatic, preferably in amounts between 0.001 and 3% by weight, particularly preferably in amounts between 0.01 and 1.5% by weight , very particularly preferably in amounts between 0.1 and 1 wt .-% is contained.

9. Use of molding compositions according to one of claims 1 to 8 for the production of shaped articles.

10. Use of molding compositions according to one of claims 1 to 8 for the production of optical data memories.

11. Use of molding compositions according to one of claims 1 to 8 for the production of extruded moldings.

12. Use of molding compositions according to one of claims 1 to 8 for the production of multilayer systems.

13. Use of molding compositions according to one of claims 1 to 8 for the production of injection molded articles.

14. Use of molding compositions according to one of claims 1 to 8 for the manufacture of automotive windows, lighting elements such as Plastic lenses or other automotive parts.

15. Use of molding compositions according to one of claims 1 to 8 for the production of injection molded parts, such as food containers, components of electrical appliances or decorative items.

16. Use of molding compositions according to one of claims 1 to 8 for the manufacture of glasses.

17. Moldings made from polycarbonate molding compositions as in the claims

1 to 9 defined.