DE19538247A1 - Laser-inscribable polymer molding compounds - Google Patents

Description

The invention relates to thermoplastic polymer molding compositions with a be agreed additive system, as well as from these thermoplastic molding compounds provided moldings for laser marking.

The application of patterns, letters, numbers and / or images by means of Laser beam recorder for marking and decorating molded parts Plastics are becoming increasingly important. In addition to the host The laser offers economy compared to conventional marking processes lettering high flexibility regarding font, font size and font design, regardless of the lot size. Marking electrical / electro African components, keycaps, housings and ID cards is one classic application for laser marking.

The following options for marking plastics using lasers lettering are known.

1. Dark characters on a light background

A polymer matrix is made with light colorants - pigments or dyes fabrics - colored. In the case of laser marking, the Laser energy partially carbonizes the polymer matrix / colorant. Here there is a dark discoloration of the light polymer matrix. This ver hold is limited to polymers that tend to carbonize.

The contrast ratios that can be achieved in this way are sufficient for many applications do not command.

The addition of colorants by absorbing their laser energy Change color is described in EP-A 0 190 997. So z. B. Poly butylene terephthalate colored red with iron oxide. With laser marking dark characters appear on a red background. The contrast ratio has proven to be insufficient.  

2. Bright characters on a dark background

Polymers, dyes or Additives that tend to foam due to absorption of laser energy, proven. Foaming creates bright fonts on dark ones Underground. The achievable contrast ratios are for many uses do not command sufficient.

Laser-inscribable molding compositions are known from EP-A 400 305, which Additives include copper (II) hydroxide phosphate or molybdenum (VI) oxide.

The present invention relates to polymer molding compositions which are used in the absorption of Laser energy dark characters on a light background with very high contrast relationship.

It has been found that polymer molding compounds, the copper pyrophosphate hydrate alone or in combination with copper (II) phosphate, contain molding compounds those in the polymer matrix dark characters on a light background by Ab sorption of laser energy can be achieved. By changing the laser different grayscale levels can be obtained.

The present invention therefore relates to thermoplastic molding compositions, containing

• A) 99.95 to 30, preferably 99.9 to 35, in particular 99.9 to 40 Parts by weight of thermoplastic polymer,
• B) 0 to 3 parts by weight of copper pyrophosphate hydrate,
• C) 0 to 3 parts by weight of copper (II) hydroxide phosphate,
• D) 0 to 3 parts by weight of manganese sulfate hydrate,
• E) 0 to 50 parts by weight of fillers and reinforcing materials,
• F) 0 to 60 parts by weight of flame retardant additives,
• G) 0 to 30 parts by weight of elastomer modifiers,

wherein at least one of components B) or D) is contained in the mixture and where, if component C) is contained, at least one of the Components B) and / or D) must be included, and the sum of all Parts by weight of components A) to G) results in 100.  

The invention further relates to the use of the above thermoplastic molding compositions for the production of moldings or molded parts, which are labeled with laser energy and the shape made from them body.

The invention further relates to a method for inscribing shape bodies using laser energy.

Commercially available laser systems, preferably Nd-YAG- Solid-state lasers can be used. The wavelength can be between 193 and 10 600 nm, preferably 532 and 1 064 nm.

The molding compositions used according to the invention can be used to apply optical information in the form of patterns, graphics, numbers, letters, Characters, pictures (e.g. passport photos, portraits, photos) etc. using a laser energy, e.g. B. be used by laser beam recorder.

So z. B. photographic images of the invention Molding compounds are transferred.

Component A)

As a polymer matrix, polymers or copolymers are, for. B. based on Polyalkylene terephthalates, aromatic polyesters, polyamide, polycarbonate, Polyacrylate, polymethacrylate, ABS graft polymers, polyolefins such as poly ethylene or polypropylene, polystyrene, polyvinyl chloride, polyoxymethylene, poly imide, polyethers and polyether ketones, individually or as a blend of different Polymers can be used.

Polyalkylene terephthalates in the sense of the invention are reaction products from aromatic dicarboxylic acid or its reactive derivatives (e.g. dimethyl esters or anhydrides) and aliphatic, cycloaliphatic or araliphatic Diols and mixtures of these reaction products.

Preferred polyalkylene terephthalates can be derived from terephthalic acid (or its reactive derivatives) and aliphatic or cycloaliphatic diols with 2  Manufacture up to 10 carbon atoms using known methods (Kunststoff-Handbuch, Vol. VIII, p. 695 FF, Karl-Hanser-Verlag, Munich 1973).

Preferred polyalkylene terephthalates contain at least 80, preferably 90 mol%, based on the dicarboxylic acid, terephthalic acid residues and at least 80, preferably at least 90 mol%, based on the diol component, Ethylene glycol and / or 1,4-butanediol residues.

The preferred polyalkylene terephthalates can, in addition to terephthalic acid residues 20 mol% of residues of other aromatic dicarboxylic acids with 8 to 14 carbon atoms or contain aliphatic dicarboxylic acids with 4 to 12 carbon atoms, such as residues of Phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, 4,4'-diphenyldicarbon acid, succinic, adipic, sebacic, azelaic, cyclohexanediacetic acid.

The preferred polyalkylene terephthalates can be ethylene or butanediol 1,4-glycol residues up to 20 mol% of other aliphatic diols with 3 to 12 C- Contain atoms or cycloaliphatic diols with 6 to 21 carbon atoms, for. B. Leftovers of propanediol-1,3,2-ethyl-propanediol-1,3, neopentyl glycol, pentanediol-1,5, Hexanediol-1.6, cyclohexane-dimethanol-1,4,3-methylpentanediol-2,4,2-methyl pentanediol-2,4,2,2,4-trimethylpentanediol-1,3 and -1,6,2-ethylhexanediol-1,3,2,2- 1,3-diethyl propanediol, 2,5-hexanediol, 1,4-di (β-hydroxyethoxy) benzene, 2,2-bis (4-hydroxycyclohexyl) propane, 2,4-dihydroxy-1,1,3,3-tetramethyl-cyclobutane, 2,2- bis- (3-β-hydroxyethoxyphenyl) propane and 2,2-bis (4-hydroxypropoxyphenyl) - propane (DE-OS 24 07 674, 24 07 776, 27 15 932).

The polyalkylene terephthalates can be 3- or by incorporating relatively small amounts 4-valent alcohols or 3- or 4-basic carboxylic acid, such as z. B. in DE OS 19 00 270 and U.S. Patent 3,692,744 are described. Examples of preferred branching agents are trimesic acid, trimellitic acid, tri methylolethane and propane and pentaerythritol.

It is advisable to use no more than 1 mole% of the branching agent, based on the Acid component to use.

Polyalkylene terephthalates which consist solely of terephthalic acid are particularly preferred and their reactive derivatives (e.g. their dialkyl esters) and ethylene glycol  and / or 1,4-butanediol (polyethylene and polybutylene therephthalate), and mixtures of these polyalkylene terephthalates.

Preferred polyalkylene terephthalates are also copolyesters which consist of at least two of the above acid components and / or from at least two of the above alcohol components are produced, particularly preferred Co polyesters are poly (ethylene glycol / 1,4-butanediol) terephthalates.

The polyalkylene terephthalates preferably used as component A generally have an intrisic viscosity of about 0.4 to 1.5 dl / g, preferably 0.5 to 1.3 dl / g, each measured in phenol / o-dichlorobenzene (1: 1 wt. Parts) at 25 ° C.

Aromatic polycarbonates for the purposes of this invention include homopoly understood carbonates and mixtures of these polycarbonates, which z. B. at least is based on one of the following diphenols:

Hydroquinone,
Resorcinol,
Dihydroxydiphenyls,
Bis (hydroxyphenyl) alkanes,
Bis (hydroxyphenyl) cycloalkanes,
Bis (hydroxyphenyl) sulfides,
Bis (hydroxyphenyl) ether,
Bis (hydroxyphenyl) ketones,
Bis (hydroxyphenyl) sulfones,
Bis (hydro xyphenyl) sulfoxides,
α, α′-bis (hydroxyphenyl) diisopropylbenzenes
as well as their nuclear alkylated and nuclear halogenated derivatives.

These and other suitable diphenols are e.g. B. in U.S. Patent 3,028,365, 2 999 835, 3 148 172, 2 275 601, 2 991 283, 3 271 367, 3 062 781, 2 970 131 and 2 999 846, in German Offenlegungsschriften 1 570 703, 2 063 050, 2,063,052, 2,211,956, 2,211,957 of French Patent 1,561,518 and in the monograph "H. Schnell, Chemistry and Physics of Polycarbonates, Inter science Publishers, New York 1964 ".  

Examples of preferred diphenols are:

2,2-bis (4-hydroxyphenyl) propane,
1,1-bis (4-hydroxyphenyl) cyclohexane,
2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane
2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane,
2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane,
Bis- (3,5-dimethyl-4-hydroxyphenyl) methane,
Bis (4-hydroxyphenyl) sulfide,
1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane.

The diphenols can be used both individually and in a mixture. Particularly preferred aromatic polycarbonates are based on polycarbonates of 2,2-bis (4-hydroxyphenyl) propane or one of the others as preferred called diphenols. Those based on 2,2- Bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane or 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane or mixtures of 2,2- Bis (4-hydroxyphenyl) propane and 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclo hexane.

The aromatic polycarbonates can be produced by known processes be, e.g. B. by melt transesterification with a corresponding bisphenol Diphenyl carbonate and in solution from bisphenols and phosgene. The solution can be homogeneous (pyridine process) or heterogeneous (two-phase interfaces procedure) (see H. Schnell, "Chemistry and Physics of Polycarbonates", Polymer Reviews, Vol. IX, S 33ff, Intersciencs Publ. 1964).

The aromatic polycarbonates generally have average molecular weights M _w of approximately 10,000 to 200,000, preferably 20,000 to 80,000 (determined by gel chromatography after prior calibration).

For the purposes of the invention, copolycarbonates are, in particular, Poydiorganosiloxane-polycarbonate block copolymers with an average molecular weight M _w of approximately 10,000 to 200,000, preferably 20,000 to 80,000 (determined by gel chromatography after prior calibration) and with an aromatic carbonate structural unit content of approximately 75 to 97.5 % By weight, preferably 85 to 97% by weight and a content of polydiorganosiloxane structural units of approximately 25 to 2.5% by weight, preferably 15 to 3% by weight, the block copolymers starting from α, ω-bishydroxyaryloxy end groups -containing polydi organosiloxanes with a degree of polymerization P _n of 5 to 100, preferably 20 to 80, are produced.

The polydiorganosiloxane-polycarbonate block polymers can also be a Mixture of polydiorganosiloxane-polycarbonate block copolymers with conventional ones be polysiloxane-free, thermoplastic polycarbonates, the total content about 2.5 to 25% by weight of polydiorganosiloxane structural units in this mixture is.

Such polydiorganosiloxane-polycarbonate block copolymers are known is characterized by the fact that it has an aromatic carbonate structure in the polymer chain units (1) and on the other hand aryloxy end group-containing polydiorganosiloxanes (2) contain,

wherein
Ar are identical or different aryl residues from diphenols and
R and R 1 are the same or different and are linear alkyl, branched alkyl, alkenyl, halogenated linear alkyl, halogenated branched alkyl, aryl or halogenated aryl, but preferably methyl,
and
the number of diorganosiloxy units is n = a + b + c = 5 to 100, preferably 20 to 80.

Alkyl in the above formula (2) is, for example, C₁-C₂₀-alkyl, alkenyl is in formula (2) above, for example C₂-C₆ alkenyl; Aryl is in the above Formula (2) C₆-C₁₄ aryl. Halogenated in the above formula means in part or fully chlorinated, brominated or fluorinated.

Examples of alkyls, alkenyls, aryls, halogenated alkyls and halogenated aryls are methyl, ethyl, propyl, n-butyl, tert-butyl, vinyl, phenyl, naphthyl, Chloromethyl, perfluorobutyl, perfluorooctyl and chlorophenyl.

Such polydiorganosiloxane-polycarbonate block copolymers are e.g. B. from US-PS 3,189,662, U.S. Patent 3,821,325 and U.S. Patent 3,832,419.

Preferred polydiorganosiloxane-polycarbonate block copolymers are available by polydiorganosiloxanes containing α, ω-bishydroxyaryloxy end groups together with other diphenols, optionally with the use of Branch in the usual amounts, e.g. B. after the two-phase interfaces procedure (see H. Schnell, Chemistry and Physics of Polycarbonates Polymer Rev. Vol. IX, page 27 ff, Interscience Publishers New York 1964) each selected the ratio of the bifunctional phenolic reactants is that the content of aromatic carbonate structure according to the invention units and diorganosiloxy units results.

Such α, ω-bishydroxyaryloxy end group-containing polydiorganosiloxanes are e.g. B. is known from US 3,419,634.

ABS graft polymers in the sense of the invention are graft polymers from

• A.1) 5 to 95, preferably 30 to 80 parts by weight of a mixture of
• A.1.1) 50 to 95 parts by weight of styrene, α-methylstyrene, halogen or methyl core substituted styrene, C₁-C₈ alkyl methacrylate, especially methyl meth acrylate, C₁-C₈ alkyl acrylate, especially methyl acrylate or mixtures of these connections and
• A.1.2) 5 to 50 parts by weight of acrylonitrile, methyl acrylonitrile, C₁-C₈ alkyl meth acrylates, especially methyl methacrylate, C₁-C₈ alkyl acrylate, in particular  methyl acrylate, maleic anhydride, C₁-C₄-alkyl or phenyl-N-sub substituted maleimides or mixtures of these compounds
• A.2) 5 to 95, preferably 20 to 70 parts by weight of butadiene, polybutadiene or Butadiene / styrene copolymer with a glass transition temperature below -10 ° C.

Such graft polymers are e.g. B. in DE-OS 20 35 390 (= US-PS 3 644 574) or described in DE-OS 22 48 242 (= GB-PS 1 409 275).

As is known, the graft monomers in the graft reaction are not necessarily full are constantly grafted onto the graft base, arise from the graft monomeric copolymers. The term ABS graft polymers are also to understand those products which, due to polymerization, precisely this Co contain polymers.

The average particle diameter d₅₀ of the ABS graft polymer is in all mean 0.5 to 5 nm, preferably 0.1 to 2 nm. The middle particle diameter d₅₀ is the diameter, above and below it 50 wt .-% of the particles are. It can be measured using ultracentrifuges (W. Scholtan, H. Lange, Kolloid, Z. Polymer 250 (1972), 782-796).

Polyolefins are polyethylene, polypropylene, poly-1-butene and polymethylpentene, which still contain small amounts of non-conjugated dienes in copolymerized form can. These polymers are known and in Roempp's chemistry lexicon, 8th 1987, Vol. 5, page 3307 and described in the literature cited therein. Before is polypropylene.

As polyamides in the thermoplastic polyamide molding compositions in general mean aliphatic polyamides or polyamides with predominantly aliphatic Share used. Polyamide 6 or polyamide 66 or copolyamides are preferred of polyamide 6 with diamines (preferably C₄-C₁₆-, especially C₄-C₈-alkylene diamines) and dicarboxylic acids (preferably C₄-C₁₂-, especially C₄-C₈-alkylene dicarboxylic acids) or polyamides 66 with a comonomer content of at most 20% by weight.  

Component B

Copper pyrophosphate hydrate [Cu₂P₂O₇H₂O] is commercially available, e.g. B. at Riedel de Haen.

Component C

Copper (II) hydroxide phosphate [Cu₂ (OH) PO₄] is also commercially available, e.g. B. at Riedel de Haen.

Components B and C can be either in pure form or in conc trier form (usually granules or powder) or as a batch, d. H. in one or polymer incorporated.

Component D

Manganese sulfate hydrate [MnSO₄H₂O] is also commercially available.

Components B), C) and / or D) are preferably used in an amount of 0.05 to 2.5, in particular 0.5 to 2.5 parts by weight are added.

Component E

As fillers and reinforcing materials, glass fibers, glass balls, mica, Silicates, quartz, talc, titanium dioxide, wollastonite, and the like. a. used that too can be surface treated. Preferred reinforcing materials are commercially available usual glass fibers. The glass fibers, which are generally a fiber diameter have between 8 and 14 microns, as continuous fibers or as cut or ground glass fibers are used, the fibers with a suitable Sizing system and an adhesion promoter or adhesion promoter system based on silane can be equipped. The mixture is preferably 8 to 45 ins special 10 to 40 parts by weight of fillers and reinforcing materials are added.

Component F

Commercially available organic compounds or Halogen compounds with synergists or commercially available organic nitrogen  compounds or organic / inorganic phosphorus compounds. Also mineral flame retardants such as Mg hydroxide or Ca-Mg carbonate hydrate can be used.

The molding compositions according to the invention can contain up to 20, preferably 3 to 18, in particular 6 to 15 parts by weight of halogenated compounds and up to 8, preferably 2 to 6 parts by weight of antimony compounds, especially antimony tri contain oxide or antimony pentoxide.

As halogen-containing, especially brominated and chlorinated, organic ver Examples of bonds are:

Ethylene-1,2-bistetrabromophthalimide,
Epoxidized tetrabromobisphenol A resin,
Tetrabromobisphenol A oligocarbonate,
Tetrachlorobisphenol A oligocarbonate,
Pentabrom polyacrylate,
brominated polystyrene.

Pentabrom polyacrylate generally has average molecular weights M _w (weight average) of 10,000 to 200,000, brominated polystyrene generally 10,000 to 500,000.

Epoxidized tetrabromobisphenol-A and tetrabromobisphenol-A are preferred Oligocarbonate used.

Epoxidized tetrabromobisphenol-A is a known diepoxy resin with a Molecular weight from about 350 to about 2,100, preferably 360 to 1,000, particularly preferably 370 to 400, and consists essentially of at least a condensation product of bisphenol A and epihalohydrin and described by the formula (I)

where X represents hydrogen or bromine and n is an average number between Is zero and less than 2.3 (see, for example, EP-A 180 471).

Tetrabromobisphenol A oligocarbnate or tetrachlorobisphenol A oligocarbonate described by formula (II), wherein the oligomers either with phenol or can be terminated with tribromophenol or trichlorophenol:

where X represents hydrogen, bromine or chlorine, n is an average number between 4 and 7.

Tetrabromo (chloro) bisphenol A oligocarbonate is known and according to known ver drive producible.

As organic phosphorus compounds, the phosphorus compounds are in accordance with EP-A 345 522 (US-PS 061.745) or DE-OS 43 28 656.9 in those described there ben appropriate amounts, for. B. triphenyl phosphate, oligomeric phosphates, resorcinol phosphate or a mixture thereof.  

Component G

Commercially available EP (D) M rubbers, graft come as elastomer modifiers rubbers based on butadiene, styrene, acrylonitrile (see e.g. the above written ABS graft polymers), acrylate rubbers, thermoplastic poly urethanes or EVA copolymers with or without functional coupling groups questionable.

The molding compositions according to the invention can be conventional additives, such as lubricants and Mold release agents, nucleating agents, antistatic agents, stabilizers contain.

The molding compositions according to the invention from the respective components and optionally other known additives such as stabilizers, dyes, Pigments, lubricants and mold release agents, reinforcing materials, nucleation agents agents, as well as antistatic agents, can be made by looking at the respective Components mixed in a known manner and at temperatures from 180 ° C to 330 ° C in common units such as internal kneaders, extruders, double shafts snails melt-compounded or melt-extruded.

Examples example 1

1% copper pyrophosphate hydrate is made with a compound
80.9% by weight of polybutylene terephthalate, intrinsic viscosity IV = 1.135-1.210
13.5% by weight of ethylene bis-tetrabromophthalimide (Saytex BT93 white, from Ethyl)
5.0% by weight of antimony trioxide and
0.6% by weight processing stabilizers
physically mixed and processed into moldings using an injection molding machine.

Example 2

1 wt .-% copper pyrophosphate hydrate is made with a compound
80.9% by weight of polybutylene terephthalate, intrinsic viscosity IV = 1.135-1.210
13.5% by weight of ethylene bis-tetrabromophthalimide (Saytex BT93 white, from Ethy)
5.0% by weight of antimony trioxide and
0.6% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 3

1 wt .-% copper pyrophosphate hydrate is made with a compound
99.5% by weight of polybutylene terephthalate, intrinsic viscosity IV = 0.90-0.95 and
0.5% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 4

1.0 wt .-% copper pyrophosphate hydrate is made with a compound
44.3% by weight of polybutylene terephthalate, intrinsic viscosity IV = 1.015-1.135,
20.0% by weight of glass fibers (4.5 mm average length)
20.0 wt% SAN
15.0% by weight of graft rubber
0.7% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 5

1.0 wt .-% copper pyrophosphate hydrate is made with a compound
79.5% by weight of polybutylene terephthalate, intrinsic viscosity IV = 0.90-0.95
20.0% by weight of glass fibers (4.5 mm average length),
0.50% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 6

1.0 wt .-% copper pyrophosphate hydrate is made with a compound
54.8% by weight of polybutylene terephthalate, intrinsic viscosity IV = 0.90-0.95
30.0% by weight of glass fibers (4.5 mm average length)
10.0% by weight of tetrabromobisphenol-A
4.5% by weight of antimony trioxide
0.6% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 7

0.5% by weight of copper pyrophosphate hydrate and 0.5% by weight of copper (II) hydroxide phosphate is made with a compound
80.9% by weight of polybutylene terephthalate, intrinsic viscosity IV = 1.135-1.210
13.5% by weight ethylene bis-tetrabromophthalimide
5.0% by weight of antimony trioxide and
0.6% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 8

0.5 wt .-% copper pyrophosphate hydrate and 0.5 wt .-% copper (II) hydroxide phosphate is made with a compound
79.5% by weight of polybutylene terephthalate, intrinsic viscosity IV = 0.90-0.95
20.0% by weight glass fibers, 4.5 mm
0.50% by weight processing stabilizers
physically mixed and then compounded using an extruder. The granules obtained are injected into sheets on an injection molding machine.

Example 9

0.5% by weight copper (II) hydroxide phosphate
0.5% by weight of manganese sulfate hydrate
0.5 wt% Bayer Titan R-KB2
98.5% by weight Durethan BKV 30 H 1-0.

The plates are made with a FOBA-LAS Nd-YAG laser at 532 and 1 064 nm Labeled wavelength.

Depending on the intensity of the laser beam energy, black, dark or dark generated gray characters on light background.

Result from Examples 1 to 9

All characters and symbols are characterized by very good contrasts different dark gray to black shades.

Claims (7)

1. containing thermoplastic molding composition,

• A) 99.95 to 30 parts by weight of thermoplastic polymer,
• B) 0 to 3 parts by weight of copper pyrophosphate hydrate,
• C) 0 to 3 parts by weight of copper (II) hydroxide phosphate,
• D) 0 to 3 parts by weight of manganese sulfate hydrate,
• E) 0 to 50 parts by weight of fillers and reinforcing materials,
• F) 0 to 60 parts by weight of flame retardant additives
• G) 0 to 30 parts by weight of elastomer modifiers,

wherein at least one of components B) or D) ent in the mixture is to be kept and where component C) is contained, at least one of components B) and / or D) must be included, and the sum of all parts by weight of components A) to G) is 100. 2. Thermoplastic molding composition according to claim 1, wherein as a compo nente (A) Polymers or copolymers based on polyalkylene tere phthalates, aromatic polyesters, polyamide, polycarbonate, polyacrylate, Polymethacrylate, ABS graft polymers, polyolefins such as polyethylene or polypropylene, polystyrene, polyvinyl chloride, polyoxymethylene, poly imide, polyethers and polyether ketones, individually or as a blend of ver different polymers can be used. 3. Thermoplastic molding compositions according to claim 1, wherein as a flame retardant zadditive magnesium hydroxide, calcium magnesium carbonate hydrate, halo Generated compounds, optionally in combination with antimony oxides, be used. 4. Thermoplastic molding composition according to claim 1, being halogenated Compounds ethylene 1,2-bistetrabromophthalimide, epoxidized tetrabromo bisphenol A resin, tetrabromobisphenol A oligocarbonate, tetrachlorobis phenol A oligocarbonate, pentabrom polyacrylate, brominated polystyrene and / or organic phosphorus compounds is used. 5. Use of the molding compositions according to claim 1 for the production of Molded articles.   6. Moldings made from thermoplastic molding compositions according to Claim 1.