EP3697847A1

EP3697847A1 - Flame-resistant filling-material-reinforced polycarbonate composition having a reduced bisphenol-a content

Info

Publication number: EP3697847A1
Application number: EP18731479.4A
Authority: EP
Inventors: Thomas Eckel; Sven Hobeika; Ralf Hufen; Andreas Seidel; Burkhard Thuermer
Original assignee: Covestro Deutschland AG
Current assignee: Covestro Intellectual Property GmbH and Co KG
Priority date: 2017-10-16
Filing date: 2018-06-22
Publication date: 2020-08-26
Also published as: TW201922922A; CN111201282A; WO2019076495A1; US20210047512A1; KR20200060417A

Abstract

The invention relates to a composition for generating a thermoplastic moulding compound, wherein the composition contains or consists of at least the following components: A) 45.0 to 95.0 wt.% of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyester carbonate and aromatic polyester; B) 1.0 to 35.0 wt.% of a polymer that is free from epoxide groups, consisting of B1) a rubber-modified graft polymer and B2) optionally a rubber-free vinyl (co)polymer; C) 0.1 to 10.0 wt.% of a polymer containing structural elements based on styrene and a vinyl monomer containing epoxide groups; D) 1.0 to 20.0 wt.% of a phosphorus-containing flame retardant; E) 1.0 to 35.0 wt.% of a filling material, and F) 0.1 to 10.0 wt.% of additional materials; wherein the component C has a weight ratio of structural elements based on styrene to those based on vinyl monomers containing epoxide groups of between 100:1 and 1:1. The invention also relates to the use of the composition, and to a method for producing a moulding compound of this type, and to the moulding compound itself. The invention further relates to a moulded body formed from the above-mentioned moulding compound.

Description

Flame-retardant, filler-reinforced polycarbonate composition with low bisphenol-A

salary

The invention relates to a polycarbonate-containing composition for producing a thermoplastic molding composition, the use of the composition and a method for producing such a molding composition and the molding composition itself. The invention also relates to a molding of the aforementioned molding composition.

Polycarbonate compositions have been known for a long time. Moldings are produced from these materials for a variety of applications, for example in the automotive sector, for rail vehicles, for the construction sector, in the electrical / electronics sector and in household appliances. By

Variation of the amount and type of Rezepturb es tandteil e can be the compositions and thus the moldings produced in a wide range in terms of their thermal, rheological and mechanical properties adapt to the requirements of each application.

The moldings are often prepared by injection molding process and in such cases it is advantageous if the thermoplastic molding compositions used for this purpose have good melt flowability in order to enable processing into thin-walled components at a low melt temperature.

In addition to polycarbonate, other polymer components, such as vinyl (co) polymers, are frequently used as further constituents. However, these have only a partial compatibility with polycarbonate. For this reason, phase compatibilizers, for example in the form of copolymers with special functional groups, are often used in order to improve the mechanical properties of moldings produced from the thermoplastic molding compositions. However, such phase compatibilizers can change the surface properties and lead to a low degree of gloss, which is partly undesirable. EP 1 854 842 B1 discloses styrenic resin compositions containing polycarbonate, a styrene-based resin, for example ABS, a modified styrene-based polymer with vinyl-based monomer units. The styrene-based polymer is provided with a functional group selected from carboxyl groups, hydroxyl groups, epoxy groups, amonino groups and oxazine groups. The styrenic resin and the polycarbonate have a dispersed structure with a phase spacing of 0.001 to 1 pm. The compositions are suitable for injection molding, have excellent mechanical properties, flowability, chemical resistance and galvanizability, and are readily rendered flame retardant. EP 1 069 156 Bl discloses flame-retardant thermoplastic compositions comprising polycarbonate, styrene graft polymer, styrene copolymer, SAN-grafted polycarbonate or polycarbonate-grafted SAN and phosphoric acid ester. The compositions have improved flame resistance and improved mechanical properties and are suitable for electrical and electronic equipment housings.

J 2011153294 A describes compositions comprising styrene resin, polycarbonate, polycarbonate grafting S AN copolymer and fillers in which styrene resin and polycarbonate have a dispersed structure with a phase separation of 0.001 to 1 pm

CN 104004333 A, CN 104004331 A and CN 102719077 A disclose PC-ABS compositions comprising a polycarbonate, an acrylonitrile-butadiene-styrene polymer, an impact modifier and a compatibilizer.

CN 102516734 A discloses flame-retardant PC + ABS compositions with improved surface impact resistance comprising polycarbonate, acrylonitrile-butadiene-styrene polymer, impact modifier, a compatibilizer and a phosphoric acid ester as flame retardant.

JP 3603839 B2 and JP 3969006 B2 disclose PC + AB S compositions with good injection molding performance and good heat and impact resistance. The compositions contain polycarbonate, ABS resin and a graft polymer grafted onto polycarbonate with polystyrene segments. The desire for ever thinner applications, especially in the areas of IT and E & E, leads to a greater shear stress during processing in the flame-retardant and filler-reinforced PC / AB S blends. This can result in degraded mechanical properties, loss of visual appearance and reduced flame retardancy. In addition, these processing conditions can lead to increased degradation phenomena in the polycarbonate, which manifests itself in an increased content of phenols, in particular of bisphenol A, in the product.

The object of the invention was thus to provide a polycarbonate-containing composition for producing a thermoplastic molding composition, which shows improved mechanical properties during processing and, moreover, a lower content of phenols resulting from degradation phenomena of the polycarbonate, in particular of bisphenol, after processing A, has. Furthermore, the object of the invention was to provide a composition with improved thermal stability, improved flame resistance and improved Provide chemical resistance. Preferably, the flow behavior of the molding compositions should not be significantly deteriorated.

The object has been achieved by a composition for producing a thermoplastic molding composition, wherein the composition contains or consists of at least the following constituents:

A) 45.0 to 95.0 wt%, preferably 46.0 to 85.0 wt%, more preferably 47.0 to 75 wt%, most preferably 48.0 to 74 wt%. % of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyester carbonate and aromatic polyester, with aromatic polycarbonate and aromatic polyester carbonate being preferred,

B) 1.0% to 35.0% by weight, preferably 2.0 to 25.0% by weight, more preferably 3.0 to 15.0% by weight, most preferably 6.0 to 14 , 0 wt .-% polymer that is free of epoxy groups consisting of

Bl) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

C) 0.1 to 10.0 wt.%, Preferably 0.3 to 8.0 wt.%, More preferably 0.5 to 6.0 wt.%, Most preferably 3.0 to 6, 0% by weight of a polymer comprising structural elements derived from styrene and an epoxide group-containing vinyl monomer,

D) 1.0 to 20.0 wt%, preferably 2.0 to 18.0 wt%, more preferably 3.0 to 16.0 wt%, most preferably 5.0 to 1.55 % By weight of phosphorus-containing flame retardant,

E) 1.0 to 35.0% by weight, preferably 3.0 to 30.0% by weight, more preferably 5.0 to 25.0% by weight, most preferably 5.0 to 23, 0 wt .-% filler, as well

F) 0.1 to 10.0% by weight, preferably 0.2 to 8.0% by weight, more preferably 0.3 to 6.0% by weight, most preferably 0.4 to 5, 5 wt .-% additives, wherein the component C has a weight ratio of styrene to on epoxy group-containing vinyl monomers derived structural elements of 100: 1 to 1: 1 and wherein the amounts of components A) to F) are independent of each other. In a further preferred embodiment, the composition contains or consists of at least the following constituents:

From 50.0 to 95.0% by weight of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyester carbonate and aromatic polyester,

1.0% to 35.0% by weight of polymer which is free of epoxide groups consisting of Bl) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

C) 0.1 to 10.0% by weight of a polymer comprising structural elements derived from styrene and an epoxide group-containing vinyl monomer,

D) 1.0 to 20.0% by weight of phosphorus-containing flame retardant,

E) 1.0 to 35.0 wt .-% filler, as well

F) 0, 1 to 10.0 wt .-% additives, wherein the component C has a weight ratio of based on styrene to epoxy group-containing vinyl monomers structural elements of 100: 1 to 1: 1.

The proportion of component A is 50 to 95 wt .-%, preferably 50.0 to 95.0 wt .-%.

It has surprisingly been found that molding compositions of such compositions have good mechanical properties, such as the fracture behavior and the modulus of elasticity. They also have a good processability and show after processing under shear a lower content of phenols, especially bisphenol A (BPA), which are caused by deterioration of the polycarbonate during processing to the molding material. If the content of component C is chosen too high, this can lead to an undesirable deterioration of the flow behavior, which can have a negative effect on the suitability of the molding compositions for injection molding applications.

According to a preferred embodiment of the composition according to the invention, it contains or consists of the following components:

A) 51.0 to 85.0% by weight, in particular 52.0 to 75.0% by weight, of aromatic polycarbonate and / or aromatic polyester carbonate, B) 2.0 to 25.0 wt .-%, in particular 3.0 to 15.0 wt .-% polymer which is free of epoxide groups consisting of

Bl) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

C) 0.3 to 8.0% by weight, in particular 0.5 to 6.0% by weight, of the epoxy-vinyl polymer containing or consisting of structural units derived from styrene and from an epoxide-group-containing vinyl monomer,

D) 2.0 to 18.0% by weight, in particular 3.0 to 16.0% by weight, of phosphorus-containing flame retardant,

E) 3.0 to 30.0 wt .-%, in particular 5.0 to 25.0 wt .-% filler, and

F) from 0.2 to 8.0% by weight, in particular from 0.3 to 6.0% by weight, of additives,

wherein the amounts of components A to F are independent of each other.

If a molding compound is produced from such a described composition, for example by mixing the constituents at a temperature of from 200 to 320 ° C., then this molding composition is particularly preferred

When using glass fibers as component E less than 20 ppm of free bisphenols, in particular less than 15 ppm, preferably less than 10 ppm and

When using talc as component E less than 100 ppm of free bisphenols, in particular less than 95 ppm, preferably less than 90 ppm.

Component A

Polycarbonates in the context of the present invention are both homopolycarbonates and copolycarbonates and / or polyestercarbonates; The polycarbonates may be linear or branched in a known manner. According to the invention, it is also possible to use mixtures of polycarbonates.

The thermoplastic polycarbonates including the thermoplastic aromatic polyester carbonates have average molecular weights M _w determined by GPC (gel permeation chromatography in methylene chloride with polycarbonate based on bisphenol A as a standard) of from 20,000 g / mol to 50,000 g / mol, preferably from 23,000 g / mol to 40,000 g / mol, in particular from 26,000 g / mol to 35,000 g / mol. E in part, up to 80 mol%, preferably from 20 mol% up to 50 mol%, of the carbonate groups in the polycarbonates used according to the invention may be replaced by aromatic dicarboxylic acid ester groups. Such polycarbonates, which contain both acid residues of carbonic acid and acid residues of aromatic dicarboxylic acids incorporated in the molecular chain, are referred to as aromatic polyester carbonates. They are subsumed in the context of the present invention under the generic term of the thermoplastic, aromatic polycarbonates.

The preparation of the polycarbonates is carried out in a known manner from diphenols, carbonic acid derivatives, optionally chain terminators and optionally branching agents, wherein the preparation of the polyester carbonates a part of the carbonic acid derivatives is replaced by aromatic dicarboxylic acids or derivatives of dicarboxylic acids, depending on the proviso in the aromatic polycarbonates carbonate structural units to be replaced by aromatic dicarboxylic ester structural units.

Dihydroxyaryl compounds suitable for the preparation of polycarbonates are those of the formula (I)

HO-Z-OH (I),

in which

Z is an aromatic radical having 6 to 30 C atoms, which may contain one or more aromatic nuclei, may be substituted and may contain aliphatic or cycloaliphatic radicals or alkylaryls or heteroatoms as bridge members.

Z in formula (I) preferably represents a radical of the formula (II)

in the

R "and R ^{7 are} independently H, G to Gs alkyl, G to Gs alkoxy, halogen as

Cl or Br or for each optionally substituted aryl or aralkyl, preferably for I i or G to Cn-alkyl, particularly preferably for I I or G to G alkyl and very particularly preferably for H or methyl, and

X for a single bond, -SO .--, -CO-, -O-. -S-, G- to G-alkylene, G to G alkylidene or G to G cycloalkylidene, which may be substituted by G to G alkyl, preferably methyl or ethyl, further for G - to Cn- Arylene, which may optionally be condensed with other heteroatom-containing aromatic rings is. X is preferably a single bond, C to C ₅ -alkylene, C to C ₅ -alkylidene, C to C ₆ -cycloalkylidene, -O-. -SO-. -CO-, -S-, -S0 ₂ - or for a radical of the formula (IIa)

Examples of dihydroxyaryl compounds (diphenols) are: dihydroxybenzenes, dihydroxydiphenyls, bis (hydroxyphenyl) alkanes, bis (hydroxyphenyl) -cycloalkanes, bis (hydroxyphenyl) -aryls, bis (hy (Iroxyphenyl) ethers, bis ( hydroxyphenyl) ketones, bis (hydroxyphenyl) sulfides, bis (hydroxyphenyl) sulfones, bis (hydroxyphenyl) sulfoxides, 1, 1 'bis (hydroxyphenyl) diisopropylbenzenes and their ring-alkylated and ring-halogenated compounds.

Diphenols suitable for the preparation of the polycarbonates to be used according to the invention are, for example, hydroquinone, resorcinol, dihydroxydiphenyl, 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 their alkylated, nuclear alkylated and nuclear halogenated compounds.

Preferred diphenols are 4,4'-dihydroxydiphenyl, 2,2-bis (4-hydroxyphenyl) -1-phenylpropane, 1,1-bis (4-hydroxyphenyl) phenylethane, 2,2-bis (4-hydroxyphenyl ) propane, 2,4-bis- (4-hydroxyphenyl) -2-methylbutane, 1,3-bis- [2- (4-hydroxyphenyl) -2-propyl] benzene (bisphenol M), 2,2-bis- (3-methyl-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, 3-bis- [2- (3,5-) dimethyl-4-hydroxyphenyl) -2-propyl] -benzene and 1, 1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (bisphenol TMC).

Particularly preferred diphenols are 4,4'-dihydroxydiphenyl, 1, 1-bis (4-hydroxyphenyl) phenyl ethane, 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclohexane and 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane (bisphenol TMC ). Particularly preferred is 2,2-bis (4-hydroxyphenyl) propane (bisphenol-A).

These and other suitable diphenols are described, for example, in US Pat. Nos. 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 A, 2 036 052 A, 2 211 956 A and 3 832 396 A, French Patent 1 561 518 A1, in the monograph "H. Schnell, Chemistry and Physics of Polycarbonates, Interscience Publishers, New York 1964, p. 28 ff .; Pp. 102 ff, and in Dd Legrand, IT Bendler, Handbook of Polycarbonate Science and Technology, Marcel Dekker New York 2000, pp. 72 et seq. described.

In the case of homopolycarbonates, only one diphenol is used; in the case of copolycarbonates, two or more diphenols are used. The diphenols used, as well as all other chemicals and auxiliaries added to the synthesis, may be contaminated with the impurities derived from their own synthesis, handling and storage. However, it is desirable to work with as pure as possible raw materials.

The mono-functional chain terminators required for controlling the molecular weight, such as phenols or alkylphenols, in particular phenol, p-tert. Butylphenol, iso-octylphenol, cumylphenol, their chlorocarbonic acid esters or acid chlorides of monocarboxylic acids or mixtures of these chain terminators are either added to the bisphenolate or the bisphenolates of the reaction or added at any time during the synthesis, as long as phosgene or Chlorkohlensäureendgruppen in the reaction mixture are present, or in the case of acid chlorides and chloroformate as a chain terminator, as long as enough phenolic end groups of the forming polymer are available. Preferably, however, the chain terminator (s) are added after phosgenation at one point or at a time when phosgene is no longer present but the catalyst has not yet been metered or are added in front of the catalyst, together with the catalyst or in parallel.

In the same way, any branching or debranching compounds to be used are added to the synthesis, but usually before the chain terminators. Usually Trisphenole, Quart erphenole or acid chlorides of tri- or tetracarboxylic acids are used or mixtures of polyphenols or acid chlorides.

Some of the branching compounds having three or more than three phenolic hydroxyl groups include, for example, phloroglucinol, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -heptene-2, 4,6-dimethyl-2, 4,6-tris (4-hydroxyphenyl) heptane, 1,3,5-tris (4-hydroxyphenyl) benzene, 1,1,1-tris (4-hydroxyphenyl) ethane, tris (4 -hydroxyphenyl) -phenylmethane, 2,2-bis [4,4-bis (4-hydroxyphenyl) -cyclohexyl] -propane, 2,4-bis (4-hydroxyphenyl-isopropyl) -phenol, tetra- (4 hydroxyphenyl) methane. Some of the other tri-functional compounds are 2,4-dihydroxybenzoic acid, trimesic acid, cyanuric chloride and 3,3-bis (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole.

Preferred branching agents are 3,3-bis- (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole and 1,1,1-

Tri- (4-hydroxyphenyl) ethane. The amount of optionally used branching agent is 0.05 mol% to 2 mol%, based in turn on moles of diphenols used in each case. The branching agents may either be initially charged with the diphenols and the chain terminators in the aqueous alkaline phase or may be added dissolved in an organic solvent prior to phosgenation.

All these measures for the preparation of the polycarbonates are familiar to the expert.

For the preparation of the polyester carbonates suitable aromatic dicarboxylic acids are, for example, orthophthalic acid, terephthalic acid, isophthalic acid, tert-butylisophthalic acid, 3,3'-diphenyl dicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 4,4-B enzophenondi carboxylic acid, 3,4'-benzophenone - dicarboxylic acid, 4,4'-diphenyl ether dicarboxylic acid, 4,4'-Diphenylsulfondi carboxylic acid, 2,2-bis (4-carboxyphenyl) propane, trimethyl-3-phenylindan-4,5'-di carboxylic acid.

Of the aromatic dicarboxylic acids, terephthalic acid and / or isophthalic acid are particularly preferably used. Derivatives of the dicarboxylic acids are the dicarboxylic acid dihalides and the dicarboxylic acid dialkyl esters, in particular the dicarboxylic acid dichlorides and the dimethyl dicarboxylates.

Substitution of the carbonate groups by the aromatic dicarboxylic acid ester groups takes place essentially stoichiometrically and also quantitatively, so that the molar ratio of the reactants is also found in the finished polyester carbonate. The incorporation of the aromatic dicarboxylic acid ester groups can be carried out both statistically and in blocks.

Preferred methods of preparation of the polycarbonates to be used according to the invention, including the polyestercarbonates, are the known boundary surface method and the known melt transesterification method (cf., for example, WO 2004/063249 A1, WO 2001/05866 A1,

WO 2000/105867, US Pat. No. 5,340,905 A, US Pat. No. 5,097,002 A, US Pat. No. 5,717,057 A).

In the first case, the acid derivatives used are preferably phosgene and optionally dicarboxylic acid dichlorides, in the latter case preferably diphenyl carbonate and optionally di-carboxylic acid diester. Catalysts, solvents, work-up, reaction conditions, etc. for the production of polycarbonate or production of polyester carbonate are adequately described and known in both cases. The polycarbonates suitable as component A according to the invention have an OH end group concentration of 50 to 2000 ppm, preferably 80 to 1000 ppm, particularly preferably 100 to 700 ppm. Component A preferably has phenolic OH groups and the stoichiometric ratio of the epoxide groups of component C) to the phenolic OH groups component A is at least 1: 1, in particular at least 1.1: 1, preferably at least 1.2: 1 wherein component A preferably has a weight fraction of phenolic OH groups of 50 to 2000 ppm, preferably 80 to 1000 ppm, particularly preferably 100 to 700 ppm.

The determination of the OH end group concentration is carried out photometrically according to Horbach, A .; Veiel, U .; Wunderlich, H., Macromolecular Chemistry 1965, Vol. 88, pp. 215-231.

Eligible polyesters are aromatic in a preferred embodiment, more preferably polyalkylene terephthalates.

In a particularly preferred embodiment, these are reaction products of aromatic dicarboxylic acids or their reactive derivatives, such as dimethyl esters or anhydrides, and aliphatic, cycloaliphatic or araliphatic diols, and mixtures of these reaction products.

Particularly preferred aromatic polyalkylene terephthalates contain at least 80% by weight, preferably at least 90% by weight, based on the dicarboxylic acid component of terephthalic acid residues and at least 80% by weight, preferably at least 90% by weight, based on the diol component of ethylene glycol and / or butanediol -1, 4 residues.

The preferred aromatic polyalkylene terephthalates may contain, in addition to terephthalic acid residues, up to 20 mole%, preferably up to 10 mole%, of other aromatic or cycloaliphatic dicarboxylic acids having 8 to 14 C atoms or aliphatic dicarboxylic acids having 4 to 12 C atoms, e.g. Residues of phthalic acid, isophthalic acid, naphthalene-2,6-di-carboxylic acid, 4,4'-diphenyldi-carboxylic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, cyclohexanediacetic acid.

The preferred aromatic polyalkylene terephthalates, in addition to ethylene glycol or Butan ^™ xliol- 1, 4 radicals to 20 mol% i, preferably up to 10 mol%,> other aliphatic diols having 3 to 12 C atoms or cycloaliphatic diols having 6 to 21 C atoms, for example residues of 1,3-propanediol, 2-ethylpropanediol-1, 3, neopentyl glycol, pentanediol-1, 5, 1,6-hexanediol, cyclohexanedimethanol-1,4, 3-ethylpentanediol-2, 4, 2-methylpentanediol-2,4, 2,2,4-trimethylpentanediol-1, 3, 2 Ethylhexanediol 1, 3, 2,2-diethylpropanediol 1, 3, hexanediol 2,5, 1, 4-di (β-hydroxyethoxy) benzene, 2,2-bis (4-hydroxycyclohexyl) propane, 2,4-dihydroxy-1,1,3,3-tetramethylcyclobutane, 2,2-bis (4-.beta.-hydroxyethoxyphenyl) -propane and 2,2-bis (4-hydroxypropoxyphenyl) -propane (DE-A 2 407 674, 2 407 776, 2 715 932).

The aromatic polyalkylene terephthalates may be prepared by incorporation of relatively small amounts of trihydric or tetrahydric alcohols or 3- or 4-basic carboxylic acids, e.g. in accordance with DE-A 1 900 270 and US Pat. No. 3,692,744. Examples of preferred branching agents are trimesic acid, trimellitic acid, trimethylol ethane and propane and pentaerythritol.

Particularly preferred are aromatic polyalkylene terephthalates prepared solely from terephthalic acid and its reactive derivatives (e.g., their dialkyl esters) and ethylene glycol and / or butanediol-1,4, and mixtures of these polyalkylene terephthalates. Preferred mixtures of aromatic polyalkylene terephthalates contain from 1 to 50% by weight, preferably from 1 to 30% by weight, of polyethylene terephthalate and from 50 to 99% by weight, preferably from 70 to 99% by weight, of polybutylene terephthalate.

The aromatic polyalkylene terephthalates preferably used have a viscosity number of 0.4 to 1.5 dl / g, preferably 0.5 to 1.2 dl / g, measured in phenol / o-dichlorobenzene (1: 1 parts by weight) in a concentration of 0.05 g / ml according to I SO 307 at 25 ° C in the Ubbelohde viscometer.

The aromatic polyalkylene terephthalates can be prepared by known methods (see, for example, Kunststoff-Handbuch, Volume VIII, pages 695 ff, Carl-Hanser-Verlag, Munich 1973).

Aromatic polycarbonate based on bisphenol A is most preferably used as component A.

Component B

Component B consists of B1 and optionally B2. If component B consists of Bl and B2, the proportion of B1 in component B is preferably at least 20% by weight, particularly preferably at least 40% by weight. Both component B1 and component B2 contain no epoxide groups.

Component B 1 The component Bl is chewable graft polymers prepared by the emulsion polymerization process, in a preferred embodiment,

Bi.l) 5 to 95 wt .-%, preferably 10 to 70 wt .-%, particularly preferably 20 to 60 wt .-%, based on the component B 1. a mixture of

Bl.1.1) 65 to 85 wt .-%, preferably 70 to 80 wt .-%, based on Bl .l, of at least one monomer selected from the group of vinyl aromatics (such as styrene, methyl styrene), ring-substituted vinyl aromatic ( such as p-methylstyrene, p-chlorostyrene) and methacrylic acid (C1-C8) alkyl esters (such as methyl methacrylate, ethyl methacrylate) and

Bl.l .2) 15 to 35 wt .-%, preferably 20 to 30 wt .-%, based on Bl l, of at least one monomer selected from the group of vinyl cyanides (such as unsaturated nitriles such as acrylonitrile and methacrylonitrile), ( Meth) acrylic acid (C 1 -C 8) alkyl esters (such as, for example, methyl methacrylate, n-butyl acrylate, tert-butyl acrylate) and derivatives (such as anhydrides and imides) of unsaturated carboxylic acids (for example, maleic anhydride and N-phenyl-maleimide)

B1.2) 95 to 5 wt .-%, preferably 90 to 30 wt .-%, particularly preferably 80 to 40 wt .-%, based on the component Bl, at least one elastomeric graft base.

The graft base preferably has a glass transition temperature <0 ° C., more preferably <-20 ° C., particularly preferably <-60 ° C.

The glass transition temperature, unless explicitly described otherwise in the present application, for all components by means of differential scanning calorimetry (DSC) according to DIN EN 61006 (version of 1994) at a heating rate of 10 K / min with determination of the Tg as the midpoint temperature (tangent method ).

The graft particles in the component Bl preferably have an average particle size (D50 value) of 0.05 to 5 μm, preferably from 0.1 to 1.0 μm, particularly preferably from 0.2 to 0.5 μm. The mean particle size D50 is the diameter, above and below which are each 50% by weight of the particles. Unless explicitly stated otherwise in the present application, it is determined by ultracentrifuge measurement (W. Scholtan, H. Lange, Kolloid, Z. and Z. Polymere 250 (1972), 782-1796). Preferred monomers B 1.1.1 are selected from at least one of the monomers styrene, (X-methylstyrene and methyl methacrylate, preferred monomers 1, 2 are selected from at least one of the monomers acrylonitrile, maleic anhydride and methyl methacrylate.

Particularly preferred monomers are Bl.1.1 styrene and Bl.1.2 acrylonitrile.

Examples of suitable grafting bases B 1 .2 for the graft polymers B 1 are diene rubbers, diene-vinyl block copolymer rubbers, EP (D) M rubbers, ie those based on ethylene / propylene and optionally diene, acrylate, polyurethane, silicone rubber. , Chloroprene and ethylene / vinyl acetate rubbers and mixtures of such rubbers or silicone-acrylate composite rubbers in which the silicone and the acrylate components are chemically linked to one another (eg by grafting).

Preferred grafting bases B 1.2 are diene rubbers (for example based on butadiene or isoprene), diene-vinyl block copolymer rubbers (for example based on butadiene and styrene blocks), copolymers of diene rubbers with further copolymerizable monomers (for example according to Bl. 1.1 and Bl .1.2) and mixtures of the aforementioned rubber types. Especially preferred are pure polybutadiene rubber and styrene-butadiene (block) copolymer rubber. The gel fraction of the graft polymers is at least 40% by weight, preferably at least 60% by weight, particularly preferably at least 75% by weight (measured in acetone).

The gel content of the graft polymers, unless otherwise stated in the present invention, determined at 25 ° C as insoluble in acetone as a solvent insoluble fraction (M. Hoffmann, H. Krömer, R. Kuhn, polymer analysis I and II, Georg Thieme Verlag, Stuttgart 1977).

The graft polymers B 1 are prepared by free-radical polymerization.

Particularly preferred polymers B 1 are e.g. such ABS polymers prepared in emulsion polymerization, as described, for. In DE-A 2 035 390 (= US Pat. No. 3,644,574) or in DE-A 2 248 242 (= GB Pat. No. 1,409,275) or in Ulimann, Enzyklopädie der Technischen Chemie, Vol. 19 (1980), p. 280 et seq.

After completion of the polymerization reaction, the graft polymers precipitate out of the aqueous phase, followed by optional washing with water. The last work-up step is drying.

The graft polymers B 1 optionally comprise additives and / or process auxiliaries contained in the preparation, such as emulsifiers, precipitants, stabilizers and reaction initiators, which are not completely removed in the work-up described above. These may be Brönsted-basic or Brönsted-sour nature.

The graft polymer Bl comprises production-related generally also free, i. not chemically bound to the rubber base copolymer of Bl .1.1 and Bl .1.2, which is characterized in that it can be dissolved in suitable solvents (such as acetone).

Component Bl preferably contains a free copolymer of Bl. 1.1 and Bl. 1.2 which has a weight-average molecular weight (Mw), determined by gel permeation chromatography with polystyrene as standard, of preferably 30,000 to 150,000 g / mol, particularly preferably 40,000 to 120,000 g / mol.

Component B2

The composition may optionally contain as further component B2 rubber-free vinyl ((^ polymers, preferably of at least one monomer from the group of vinyl aromatics, vinyl cyanides (unsaturated nitriles), (meth) acrylic acid (C 1 to C 8) alkyl esters, unsaturated carboxylic acids and derivatives (As anhydrides and imides) of unsaturated carboxylic acids.

Particularly suitable as component B2 are (co) polymers of B2.1 from 50 to 99% by weight, preferably from 65 to 85% by weight, more preferably from 70 to 80% by weight, based on the (co) polymer B2, of at least one Monomers selected from the group of

Vinylaromatics (such as, for example, styrene, α-methylstyrene), ring-substituted vinylaromatics (such as p-methylstyrene, p-chlorostyrene) and (meth) acrylic acid (C 1 -C 8) -alkyl esters (such as, for example, methyl methacrylate, n-butyl acrylate, tert-butyl acrylate ) and B2.2 1 to 50 wt .-%, preferably 15 to 35 wt .-%, particularly preferably 20 to 30 wt .-% based on the (co) polymer B2 of at least one monomer selected from the group of vinyl cyanides (such For example, unsaturated nitriles such as acrylonitrile and methacrylonitrile), (meth) acrylic acid (C 1 -C 8) alkyl esters (such as methyl methacrylate, n-butyl acrylate, tert-butyl acrylate), unsaturated carboxylic acids and derivatives of unsaturated carboxylic acids (for example, maleic anhydride and N phenyl-maleimide).

These (co) polymers B2 are resinous, thermoplastic and rubber-free. The copolymer of B2.1 styrene and B2.2 acrylonitrile is particularly preferred.

Such (co) polymers B2 are known and can be prepared by free-radical polymerization, in particular by emulsion, suspension, solution or bulk polymerization. The (co) polymers B2 have a weight-average molecular weight (Mw), determined by gel permeation chromatography with polystyrene as standard, of preferably 50,000 to 250,000 g / mol, more preferably from 70,000 to 200,000 g / mol, particularly preferably from 80,000 to 170,000 g mol ,

Component C

The composition contains as component C at least one polymer containing structural units derived from styrene and structural units derived from a vinyl monomer containing epoxide groups.

In the context of the present application, an epoxide group is understood as meaning the following structural unit

(ΠΙ), wherein R l, R2 and R3 are independently hydrogen or methyl. Preferably, at least two of the radicals R 1, R 2 and R 3 are hydrogen, particularly preferably all radicals R 1, R 2 and R 3 are hydrogen.

Such vinyl monomers containing epoxide groups to be used for the preparation of component C are, for example, glycidyl acrylate, glycidyl methacrylate, glycidyl methacrylate, glycidyl itaconate, allyl glycidyl ether, vinyl glycidyl ether, vinyl benzyl glycidyl ether or propenyl glycidyl ether. Particularly preferred is glycidyl methacrylate.

In a preferred embodiment, component C comprises a polymer prepared by copolymerization of styrene and at least one vinyl monomer copolymerizable with styrene copolymerizable epoxy groups.

In a preferred embodiment, in the preparation of these polymers according to component C, in addition to styrene and the vinyl monomer containing epoxide groups, at least one further epoxy monomer-free vinyl monomer copolymerizable with these monomers is used. These other vinyl monomers are selected from the group consisting of vinylaromatics (such as α-methylstyrene), nuclear substituted vinylaromatics (such as p-methylstyrene, p-chlorostyrene), (meth) acrylic acid (C 1 -C 8) -alkyl esters (such as, for example, methyl methacrylate, n-butyl acrylate, tert-butyl acrylate), vinyl cyanides (such as, for example, acrylonitrile and methacrylonitrile), unsaturated carboxylic acids (for example maleic acid and N-phenyl-maleic acid) and derivatives of unsaturated carboxylic acids (for example, maleic anhydride and N-phenyl-maleimide). Particularly preferred is acrylonitrile used as another copolymerizable vinyl monomer.

In a further preferred embodiment, the component C comprises at least one polymer containing structural units derived from styrene, acrylonitrile and glycidyl methacrylate, in a particularly preferred embodiment a polymer consisting of structural units derived from styrene, acrylonitrile and glycidyl methacrylate.

If, in addition to structural units derived from styrene and derived from the epoxide group-containing vinyl monomer, additional structural units derived from another epoxide group-free vinyl monomer are contained in component C as described above, the weight ratio between the styrene-derived structural units and that of the other vinyl monomer derived structural units in the range of 99: 1 to 50:50, preferably in the range of 85: 15 to 60:40.

In a further embodiment, the component C contains structural units derived from styrene, acrylonitrile and glycidyl methacrylate, wherein the weight ratio of the styrene-derived structural units to acrylonitrile-derived structural units is in particular 99: 1 to 50:50, preferably 85:15 to 60:40.

In a preferred embodiment, component C comprises a polymer prepared by copolymerization of styrene, acrylonitrile and glycidyl methacrylate, the weight ratio of styrene to acrylonitrile being 99: 1 to 50:50, preferably 85: 15 to 60:40.

The preparation of the polymers according to component C from styrene and at least one vinyl monomer containing styrene copolymerizable with vinyl groups is preferably carried out by free-radically initiated polymerization, for example by the known solution polymerization in organic hydrocarbons. Such conditions are preferably to be adhered to that hydrolysis of the epoxide groups is at least largely avoided. Suitable and preferred conditions for this are, for example, low levels of polar solvents such as water, alcohol, acids or bases and work in solvents from the group of organic hydrocarbons which are inert to epoxide groups, such as toluene, ethylbenzene, xylene, high-boiling aliphatics, esters or ether. An alternative preparation method is the likewise known thermally or free-radically initiated, preferably continuous bulk polymerization at temperatures of preferably 40 to 150 ° C, particularly preferably 80 to 130 ° C and optionally with only partial monomer conversion, so that the polymer obtained is obtained as a solution in the monomer system.

As component C it is also possible to use a block or graft polymer which contains structural units derived from styrene and at least one vinyl monomer containing epoxide groups. Such block or graft polymers are prepared, for example, by free-radically initiated polymerization of styrene and optionally further copolymerizable vinyl monomers in the presence of a polymer selected from the group consisting of polycarbonate, polyester, polyestercarbonate, polyolefin, polyacrylate and polymethacrylate.

In a preferred embodiment, block or graft polymers of this type are prepared by free-radically initiated polymerization of styrene, a vinyl monomer containing epoxide groups and optionally further copolymerizable epoxide-free vinyl monomers in the presence of a polymer selected from the group consisting of polycarbonate, polyester, polyestercarbonate, polyolefin, polyacrylate and polymethacrylate. These polymers may also contain epoxide groups, which in the case of the polyolefins, polyacrylates and polymethacrylates are preferably obtained by copolymerization with epoxide-group-containing vinyl monomers.

As vinyl monomers containing epoxide groups and as further copolymerizable epoxy-free vinyl monomers, the abovementioned monomers are used in such block or graft polymers.

In a particularly preferred embodiment, a block or graft polymer is prepared by free-radically initiated polymerization of styrene, glycidyl methacrylate and acrylonitrile in the presence of a polycarbonate using styrene and acrylonitrile in a weight ratio of 85:15 to 60:40.

Such block or graft polymers are obtained, for example, by the above-mentioned polymer selected from the group consisting of polycarbonate, polyester, polyester carbonate, polyolefin, polyacrylate and polymethacrylate in the monomer mixture of styrene and optionally copolymerizable with styrene vinyl monomers, including optionally and preferably also containing epoxide groups Vinyl monomer is swollen or dissolved, for which purpose optionally a preferably non-aqueous Colösungmittel can be used, and with an organic peroxide as an initiator for a radical polymerization by T emp ererhöerhöhung and subsequent melt compounding is reacted. In another embodiment, component C may be a block or graft polymer prepared by reacting a polymer containing structural units derived from styrene and from an epoxide group-containing vinyl monomer with an OH group-containing polymer selected from the group consisting of polycarbonate, polyester and polyestercarbonate ,

In the preparation of the block or graft polymers, it is possible that not all polymer chains selected from the group consisting of polycarbonate, polyester, polyester carbonate, polyolefin, polyacrylate and polymethacrylate with styrene and the optionally further vinyl monomers form block or graft polymers.

In this case, component C is also understood as meaning those polymer mixtures which are obtained by the described preparation methods and in which homopolymers are also selected from polycarbonate, polyester, polyestercarbonate, polyolefin, polyacrylate and polymethacrylate and the vinyl monomers copolymerizable with styrene and optionally further with styrene obtained styrene (co) polymers present.

Component C may also be a mixture of several of the components described above. Component C has a weight ratio of styrene to epoxide group-containing vinyl monomer-derived structural elements of from 100: 1 to 1: 1, preferably from 10: 1 to 1: 1, more preferably from 5: 1 to 1: 1, most preferably from 3: 1 to 1: 1.

Component C has an epoxide content measured in accordance with ASTM D 1652-11 (version 2011) in dichloromethane of 0.1 to 5 wt.%, Preferably 0.3 to 3 wt.%, Particularly preferably 1 to 3 wt. on.

Commercially available graft or block polymers which may be used as component C include Modiper ™ CL430-G, Modiper ™ A 4100 and Modiper ™ A 4400 (each NOF Corporation, Japan). Preference is given to using Modiper ™ CL430-G.

Component I)

Phosphorus-containing flame retardants D in the sense of the invention are selected from the groups of mono- and oligomeric phosphoric and phosphonic acid esters, phosphonatoamines and phosphazenes, it also being possible to use mixtures of a plurality of components selected from one or more of these groups as flame retardants. Mono- and oligomeric phosphoric or phosphonic acid esters in the context of this invention are

Compounds of the general formula (IV)

where R ^! , R, R ^' and R ⁴ independently of one another each represent an optionally halogenated C 1 to C 5

Alkyl, each optionally substituted by alkyl Cs to Ce-Cycloalkyi-, C ₆ to C 2o-aryl or C _? to Cn-aralkyl radical, n is independently 0 or 1, q is an integer value of 1 to 30, and X is a polynuclear aromatic radical having 12 to 30 carbon atoms, which is optionally substituted by halogen and / or alkyl groups ,

Preferably, R ¹ , R ² , R ³ and R ⁴ independently of one another represent Cl to C 4 alkyl, phenyl, naphthyl or phenyl-C 1 -C 4 -alkyl. The aromatic groups R ¹ , R ² , R ³ and R ⁴ may in turn be substituted by halogen and / or alkyl groups, preferably chlorine, bromine and / or C ¹ to C ⁴ alkyl. Particularly preferred aryl radicals are resyl, phenyl, xylenyl, propylphenyl or butylphenyl and the corresponding brominated and chlorinated derivatives thereof.

X in the formula (II) is preferably a polynuclear aromatic radical having 12 to 30 carbon atoms. This is preferably derived from diphenols. n in the formula (II) can independently be 0 or 1, preferably n is 1. q stands for integer values from 0 to 30, preferably 0 to 20, particularly preferably 0 to 10, in the case of mixtures for average values of 0 , 8 to 5.0, preferably 1.0 to 3.0, more preferably 1.05 to 2.00, and most preferably from 1. 08 to 1.60.

X is particularly preferred for

or their chlorinated or brominated derivatives, in particular X is derived from bisphenol A or diphenylphenol. X is particularly preferably derived from bisphenol A.

Phosphorus compounds of the formula (II) are, in particular, tributyl phosphate, triphenylphosphate, tricresyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, diphenyl 2-ethyl cresyl phosphate, tri (isopropylphenyl) phosphate, and bisphenol A bridged oligophosphate. The use of oligomeric phosphoric acid esters of the formula (II) derived from bisphenol A is particularly preferred.

Highly preferred as component D is bisphenol A-based oligophosphate according to formula (V):

The phosphorus compounds according to component D are known (cf., for example, EP-A 0 363 608, EP-A 0 640 655) or can be prepared by known methods in an analogous manner (for example, Ulimanns Enzyklopadie der technischen Chemie, Vol ff. 1979; Houben-Weyl, Methods of Organic Chemistry, Vol. 12/1, p. 43; Beilstein, Vol. 6, p. 177).

As component D according to the invention it is also possible to use mixtures of phosphates having a different chemical structure and / or having the same chemical structure and different molecular weight. Preference is given to using mixtures having the same structure and different chain length, the stated q value being the mean q value. The mean q value is determined by determining the composition of the phosphorus compound (molecular weight distribution) by means of high pressure liquid chromatography (HPLC) at 40 ° C. in a mixture of acetonitrile and water (50:50) and calculating therefrom the mean values for q become.

Furthermore, phosphonatamines and phosphazenes, as described in WO 00/00541 and WO 01/18105, can be used as flame retardants. The flame retardants can be used alone or in any mixture with each other or in mixture with other flame retardants.

Component E

The composition contains as component E) 1.0 to 35.0 wt .-% of one or more fillers. For this purpose, in principle, all known to those skilled in the production of thermoplastic molding materials fillers into consideration.

According to a preferred embodiment of the composition according to the invention, the component E is a reinforcing filler and especially selected from particulate fillers, fibrous fillers or mixtures of these, preferably talc, kaolin, wollastonite, glass fiber, more preferably talc, glass fiber or mixtures thereof. This is particularly advantageous since such compositions on the one hand have good processing properties and on the other hand, the molding compositions produced therefrom have a low content of phenols, in particular of bisphenol A.

Suitable mineral fillers based on talcum in the context of the invention are all particulate fillers which the skilled person combines with talc or talc. Likewise, all particulate fillers that are commercially available and whose product descriptions contain the terms talc or talcum as characterizing features come into question.

Preference is given to mineral fillers which have a content of talc according to DIN 55920 of greater than 50% by weight, preferably greater than 80% by weight, particularly preferably greater than 95% by weight and particularly preferably greater than 98% by weight, based on the Have total mass of filler.

Talk means a naturally occurring or synthetically produced talc. Pure talc has the chemical composition 3 MgO '4 S1O ₂ ' H2O and thus has an MgO content of 31.9% by weight, a SiO 2 content of 63.4% by weight and a chemically bound water content of 4 , 8% by weight. It is a silicate with a layered structure. Naturally occurring talc materials generally do not have the ideal composition given above because they are contaminated by partial exchange of magnesium by other elements, by partial replacement of silicon, by, for example, aluminum and / or by intergrowths with other minerals such as dolomite, magnesite and chlorite. In an advantageous manner, the composition according to the invention contains or consists of

Component E of talc (E2), wherein the talc an MgO content of 28 to 35 wt .-%, in particular from 30.5 to 32 wt .-%, a SiC content of 55 to 65 wt .-% and a AI2O3 content of less than 1 wt .-% has. In the case of compositions with such a component E, it has been shown that, in particular, decomposition-induced degradation reactions take place to a lesser extent on the polycarbonate.

The use of the talc according to the invention in the form of finely ground types having an average particle size dso of from 0.1 to 20 μm, preferably from 0.2 to 10 μm, more preferably from 0.5 to 5 μm, is also advantageous and, to this extent, preferred preferably 0.7 to 2.5 μηι, and more preferably 1.0 to 2.0 μηι.

The talc-based mineral fillers to be used according to the invention preferably have an upper particle or particle size dgs of less than 10 μm, preferably less than 7 μm, particularly preferably less than 6 μm and particularly preferably less than 4.5 μm. The dgs and dso values of the fillers are determined by sedimentation analysis with SEDIGRAPH D 5 000 according to ISO 13317-3.

The talc-based mineral fillers may optionally be surface-treated to provide better coupling to the polymer matrix. For example, they can be equipped with a primer system based on functionalized silanes. The average aspect ratio (diameter to thickness) of the particulate fillers is preferably in the range from 1 to 100, particularly preferably 2 to 25 and particularly preferably 5 to 25, determined from electron micrographs of ultrathin sections of the finished products and measurement of a representative amount ( approx. 50) of filler particles. The particulate fillers may have a lower dgs or dso value than the fillers originally used as a result of processing into the molding compound or to shaped articles in the molding compound or in the molding. In the context of the invention, it is likewise preferred that the component E contains or consists of glass fibers (El). The glass fibers have, in particular, a diameter of 5 to 25 μm and a length of 1 to 20 mm, preferably a diameter of 6 to 20 μm and a length of 2 to 10 mm. These compositions have also been found to have good processing properties and molding compositions produced therefrom have a low content of phenols, in particular of bisphenol A.

In a preferred embodiment, component E1 is a sized glass fiber with E1a of a glass fiber selected from at least one component of the group consisting of continuous fibers (rovings), long glass fibers and cut glass fibers,

A size comprising an epoxy polymer, wherein, for example, the size partially or completely covers the surface of the glass fiber and / or possibly fills existing pores of the glass fiber, and

Elc may have an adhesion agent.

The size Elb and adhesion promoter Elc are preferably used in the component El in such an amount that the content of carbon measured on the component El at 0.1 to l wt .-%, preferably 0.2 to 0.8 wt. -%, particularly preferably 0.3 to 0.7 wt .-% is.

The glass fibers according to component Ela are preferably made of E, A or C glass. Suitable long glass fibers are described, for example, in WO 2006/040087 Al. As chopped glass fibers, the glass fibers preferably have at least 70% by weight of the glass fibers

Length of more than 60 μιη on.

The sizing Elb is preferably made

50 to 100 wt .-%, preferably 70 to 100 wt .-%, particularly preferably 80 to 100 wt .-% (in each case based on Elb) of epoxy polymer and

0 to 50 wt .-%, preferably 0 to 30 wt .-%, particularly preferably 0 to 20 wt .-% (each based on Elb) of one or more other polymers, Most preferably, the size Elb consists exclusively of the epoxy polymer (ie the size Elb is free of further polymers). The epoxide polymer of the size Elb may be, for example, an epoxy resin, an epoxy resin ester or an epoxy resin polyurethane. In a preferred embodiment, the epoxy polymer according to the component is an epoxy resin prepared from epichlorohydrin, and a preferably aromatic alcohol having at least two hydroxyl groups.

Preferably, the aromatic alcohol is a phenolic resin, for example a novolak, more preferably bisphenol-A. If the size Elb comprises a further polymer, this is preferably selected from the group consisting of polyurethanes, polyolefins, acrylate-containing polymers, styrene-containing polymers and polyamides.

Preferably, component Elc is a silane. In a preferred embodiment, the silane has a functional group selected from the group consisting of the amino group, epoxy group, and carboxylic acid groups.

Group, vinyl group and mercapto group for attachment to the polymer of the size, and one to three, preferably three alkoxy groups for attachment to the glass fiber. For example, and preferably is selected from the group consisting of vinyltrichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane as component Elc at least one silane, γ-methacryloxypropyltrimethoxysilane, SS (3,4-Epoxcyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, N-beta (aminoethyl) Y ^~ aminopropyltrimethoxysilane , γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane and γ-chloropropyltrimethoxysilane. Bright glass fibers containing the component Elc have better adhesion of the size to the glass fiber.

As component E, it is also possible to use a calcined kaolin, in particular whether it is a surface-treated material or not. The main constituent of the naturally occurring kaolin is the kaolinite, Al ₂ (OH) ₄ [Si205], secondary constituents are feldspars, mica and quartz. In addition to this composition, it is also possible to use kaolins which, instead of or in addition to kaolinite, also contain nacrit, dickite, halloysite and hydrated halloysite.

The present invention calcined kaolin is obtained by heat treatment of a kaolin at least 500 ° C, preferably from 850 ° C to 1100 ° C. The hydroxyl groups forming part of the crystalline structure of the kaolin are lost during this heat treatment and the kaolin is converted to calcined kaolin. Depending on the calcination temperature anhydrous aluminum silicates of different composition and structure (eg AI2S12O7, S13AI4O12, S12AI6O13) are obtained. The average particle diameter (dso value) of the kaolin used can be from 0.1 μm to 5.0 μm, preferably from 0.2 μm to 2.0 μm, and particularly preferably from 0.8 μm to 1.8 μm. If the average particle diameter is less than 0.1 μιη, the filler does not significantly improve the impact resistance and surface hardness, while the use of a kaolin having an average particle diameter of more than 5.0 μηι leads to surface defects and reduced toughness.

The median particle diameter (dso value) is determined by sedimentation in aqueous medium by Sedigraph 5100, Micrometrics Instruments Corporation, Norcross, Georgia, USA. The surface modification of the calcined kaolin may be effected by an organic titanium or silane compound of the formula

R '- (CH ₂ ) _n -M- (X) ₃ with M = Ti or Si;

R ¹ = H, alkyl, aryl, alkylaryl, alkenyl, cycloalkyl, vinyl, amino, mercapto, acetoxy, alkoxy,

Epoxy and (meth) acryloxy;

n = integer from 1 to 6; and

X = H, alkyl, aryl, alkylaryl, alkenyl, cycloalkyl, vinyl and / or OR ² with R ^: = I I. alkyl, aryl, alkylaryl, alkenyl, cycloalkyl, vinyl and alkyl ethers and alkyl polyethers

respectively.

Preferably, M = Si. For example, alkylsilanes, arylsilanes, epoxysilanes, aminosilanes, e.g. γ-aminopropyltriethoxysilane, mercaptosilanes, alkoxysilanes, methacryloxysilanes such as e.g. γ - methacryloxypropyltrihydroxysilane, vinylsilanes or vinylalkoxysilanes such as e.g. Vinyltriethoxysilane, vinylmethyldiethoxysilane or vinyltrimethoxysilane can be used.

Preferred radicals X, R ¹ and R ² are hydrogen, alkyl, aryl, alkylaryl, alkenyl, cycloalkyl or vinyl groups which may be substituted or unsubstituted and optionally interrupted by heteroatoms. X, R ^! and R ² may each independently be the same or different, wherein the same X or R are preferred.

Examples of hydrocarbon radicals X, R ¹ and R ² are alkyl radicals, such as, for example, methyl, ethyl, n-propyl, iso-propyl, n-butyl, isobutyl, tert-butyl, n-pentyl -, iso-pentyl, neo-pentyl, tert-pentyl, hexyl, such as n-hexyl, heptyl, such as n-heptyl, octyl, such as the n-octyl and iso-octyl, such as 2,2 , 4-trimethylpentyl, nonyl, such as n-nonyl, decyl, such as n-decyl, dodecyl, such as n-dodecyl, octadecyl, such as n-octadecyl; Cycloalkyl radicals, such as cyclopentyl, cyclohexyl, cycloheptyl radicals and methylcyclohexyl; Aryl radicals, such as, for example, phenyl, biphenyl, naphthyl and anthryl and phenanthryl radicals; Alkaryl radicals, such as, for example, o-, m-, p-tolyl radicals, xylyl radicals and ethylphylene radicals; Aralkyl radicals, such as benzyl, the a- and the ß-phenylethyl. Examples of substituted hydrocarbon radicals X, R ¹ and R ² are halogenated alkyl radicals, such as, for example, 3-chloropropyl, 3,3,3-trifluoropropyl and the perfluorohexylethyl radical, halogenated aryl radicals, such as, for example, p-chlorophenyl and the p- chlorobenzyl.

Further examples of radicals X, R ¹ and R ² are the vinyl, allyl, methallyl, 1-propenyl, 1-butenyl, 1-pentenyl, 5-hexenyl, butadienyl, hexadienyl, cyclopentenyl, cyclopentadienyl,

Cyclohexenyl, ethynyl, propargyl and 1-propynyl.

Preferably, radical R ¹ is vinyl or amino, more preferably vinyl. In a further preferred embodiment according to the invention, R is radical

Hydrogen, methyl or ethyl.

The silane or titanium compounds are used in amounts of 0.05% to 5.00% by weight, preferably 0.50% to 2.00% by weight, and more preferably 0.80 to 1.50 % By weight, based on the calcined kaolin, used for the surface treatment.

The surface treatment agent may either be first applied to the calcined kaolin or may be dosed directly together with the untreated calcined kaolin. Furthermore, according to the invention, WoUastonites can also be used. These preferably have a carbon content based on the wollastonites of greater than 0.1 wt .-%, preferably 0.2 to 2 wt .-%, particularly preferably 0.3 to 1 wt .-%, most preferably 0.3 to 0 , 6 wt .-%, determined by elemental analysis. Such WoUastonites are commercially available, for example under the trade name Nyglos® from YCO Minerals Inc. Willsboro, NY. USA and the type drawings Nyglos® 4-10992 or Nyglos® 5-10992.

Preferred WoUastonite have an average aspect ratio, ie a ratio of the average length of the fiber to the mean diameter of> 6, in particular> 7 and a mean fiber diameter of 1 to 15 μιη, preferably 2 to 10 μιη, in particular from 4 to 8 μιτι , Component F

The composition may contain as component F one or more further additives, preferably selected from the group consisting of anti-drip agents, flame retardant synergists, lubricants and mold release agents (for example pentaerythritol tetrastearate), nucleating agents, antistatic agents, conductivity additives, stabilizers (eg hydrolysis, heat aging and UV stabilizers). Stabilizers as well as transesterification inhibitors and acid ZBasequenchern), Fli eß abilitysprom en, compatibilizers, other modifiers differing from component B l (both with and without Kern-S chal e- structure), other polymeric constituents (for example, functional Blendpartnern), further of component E various fillers and reinforcing materials, as well as dyes and pigments (for example, titanium dioxide or iron oxide).

Component F may contain different impact modifiers from component B l. Impact impact modifiers are preferably prepared by mass, solution or suspension polymerization, more preferably of the ABS type.

If such impact modifiers are produced by mass, solution or suspension polymerization, their proportion is at most 20% by weight, preferably at most 10% by weight, based in each case on the sum of the impact modifiers produced by Bulk, solution, or suspension polymerization and component B 1.

Most preferably, the compositions are free of such impact modifiers made by bulk, solution, or suspension polymerization.

More preferably, they do not contain any impact modifiers other than component I.

In a preferred embodiment, the composition contains at least one polymer additive selected from the group consisting of anti-drip agents and smoke inhibitors.

For example, polytetrafluoroethylene (PTFE) or PTFE-containing compositions, such as masterbatches of PTFE with polymers or copolymers containing styrene or methylmethacrylate, as a powder or as a coagulated mixture, e.g. with component B, used.

The fluorinated polyolefins used as Antidrippingmittel are high molecular weight and have glass transition temperatures of above -30 ° C, usually of about 100 ° C, fluorine contents, preferably from 65 to 76, in particular from 70 to 76 wt .-%, average particle diameter d5Q of 0 , 05 to 1000, preferably 0.08 to 20 μιη. In general, the fluorinated polyolefins have a density of

1.2 to 2.3 g / cm- ⁵ . Preferred fluorinated polyolefins are polytetrafluoroethylene, polyvinylidene fluoride, tetrafluoroethylene / hexafluoropropylene and ethylene / tetrafluoroethylene copolymers. The fluorinated polyolefins are known (see "Vinyl and Related Polymers" by Schildknecht, John Wiley & Sons, Inc., New York, 1962, pages 484-494; "Fluoropolymers" by Wall, Wiley-Interscience, John Wiley & Sons, Inc., New York, Volume 13, 1970, pages 623-654; "Modern Plastics Encyclopedia", 1970-1971, Volume 47, No. 10A, October 1970, McGraw-Hill, Inc., New York, pages 134 and 774; "Modern Plastics Encyclopedia", 1975-1976, October 1975, Vol. 52, No. 10A, McGraw-Hill, Inc., New York, pages 27, 28 and 472, and U.S. Patents 3,671,487, 3,723,373 and 3,838,092).

Suitable fluorinated polyolefins D which can be used in powder form are tetrafluoroethylene polymers having a mean particle diameter of from 100 to 1000 μm and densities of from 2.0 g / cn 2 to 2.3 g / cm 2. Suitable tetrafluoroethylene polymer powders are commercially available products and are available, for example, from the company Du Pont under the trade name Teflon®.

In a preferred embodiment, the composition contains at least one polymer additive selected from the group consisting of lubricants and mold release agents, stabilizers, flowability promoters, compatibilizers, dyes and pigments. In a preferred embodiment, the composition contains at least one polymer additive selected from the group consisting of ice / mold release agents and stabilizers.

In a preferred embodiment, the composition contains pentaerythritol tetrastearate as a mold release agent.

In a preferred embodiment, the composition contains as stabilizer at least one member selected from the group consisting of sterically hindered phenols, organic phosphites, sulfur-based co-stabilizers and organic and inorganic Bronsted acids. In a particularly preferred embodiment, the composition contains as stabilizer at least one member selected from the group consisting of octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate and tris (2,4-di-tert-butylphenyl) phosphite.

In a particularly preferred embodiment, the composition contains as stabilizer a combination of octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate and tris (2,4-di-tert-butylphenyl) phosphite. Further preferred compositions contain as release agents pentaerythritol tetrastearate, and as stabilizer a combination of octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate and

Tris (2,4-di-tert-butylphenyl) phosphite.

Production of the molding compositions and moldings

Thermoplastic molding compositions can be prepared from the compositions according to the invention. The thermoplastic molding compositions according to the invention can be prepared, for example, by mixing the respective constituents of the compositions at temperatures of 200 ° C to 320 ° C, preferably at 240 to 320 ° C, particularly preferably at 260 to 300 ° C. The invention also provides a corresponding process for the preparation of the molding compositions of the invention. The mixing can be done in conventional units, such as in internal kneaders, extruders and twin-screw. Therein the compositions are melt compounded or melt extruded into molding compositions. This process is referred to in this application generally as compounding. By molding compound is meant the product which is obtained when the components of the composition are melt compounded and melt extruded.

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

The molding compositions according to the invention can be used for the production of moldings of any type. These can be produced for example by injection molding, extrusion and blow molding. Another form of processing is the production of moldings by deep drawing from previously prepared plates or films. The novel molding compositions are particularly suitable for processing in extrusion, blow molding and deep-drawing processes.

It is also possible to meter the constituents of the compositions directly into an injection molding machine or into an extrusion unit and to process them into moldings.

Another object of the present invention thus relates to the use of a composition according to the invention or a molding composition according to the invention for the production of Formkörpem, as well as also a molded article, which is obtainable from a composition according to the invention from a molding composition according to the invention.

Examples of such shaped articles which can be produced from the compositions and molding compositions according to the invention are films, profiles, housing parts of any kind, e.g. for household appliances such as juice presses, coffee machines, blenders; for office machines such as monitors, fiats screens, notebooks, printers, copiers; Panels, pipes, electrical installation ducts, windows, doors and other profiles for the building sector (interior and exterior applications) as well as electrical and electronic parts such as switches, plugs and sockets and components for commercial vehicles, in particular for the automotive sector. The compositions and molding compositions according to the invention are also suitable for the production of the following moldings or moldings: interior components for rail vehicles, ships, aircraft, buses and other motor vehicles, body parts for motor vehicles, electrical appliances containing small transformers, housings for information processing and transmission equipment, housings and paneling of medical equipment, massage apparatus and housings therefor, toy vehicles for children, panel wall elements, enclosures for safety devices, heat-insulated transport containers, fittings for plumbing and bathing equipment, grilles for ventilation openings and housings for garden tools.

The invention particularly relates to the following embodiments:

According to a first embodiment, the invention relates to a composition for producing a thermoplastic molding composition, wherein the composition contains or consists of at least the following constituents:

A) from 45.0 to 95.0% by weight of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyester carbonate and aromatic polyester,

B) 1.0% to 35.0% by weight of polymer free of epoxide groups consisting of

B 1) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

C) 0.1 to 10.0 wt .-% of a polymer containing on styrene and

Epoxy group-containing vinyl monomer returning structural elements,

D) 1.0 to 20.0% by weight of phosphorus-containing flame retardant,

E) 1.0 to 35.0% by weight of filler, as well

F) 0.1 to 10.0% by weight of additives, wherein component C has a weight ratio of styrene to vinyl group containing on epoxy group-containing structural elements from 100: 1 to 1: 1.

According to a second embodiment, the invention relates to a composition according to embodiment 1, characterized in that the component C structural units derived from at least one further copolymerizable with styrene copolymerizable epoxy group-free vinyl monomers.

According to a third embodiment, the invention relates to a composition according to embodiment 1 or 2, characterized in that the weight ratio of the structural units derived from styrene to styrene-copolymerizable epoxy group-free vinyl monomers in the component C is in the range of 85:15 to 60:40 ,

According to a fourth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that component C contains structural units derived from acrylonitrile. According to a fifth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that the epoxide-containing vinyl monomer used to produce the component C glycidyl acrylate, glycidyl methacrylate, glycidyl methacrylate, glycidyl itaconate, allyl glycidyl ether, vinyl glycidyl ether, vinyl benzyl glycidyl ether and / or propenyl glycidyl ether, in particular glycidyl methacrylate is. According to a sixth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that the component C has an epoxide content measured according to ASTM D 1652-11 in dichloromethane of 0.1 to 5 wt .-%.

According to a seventh embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that as component C, a block or graft polymer is used which contains structural units derived from styrene and at least one epoxide group-containing vinyl monomers.

According to an eighth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that as component C, a block or graft polymer is used, prepared by free-radically initiated polymerization of styrene and an epoxy group-containing vinyl monomers and optionally other copolymerizable epoxy groups-free Vinyl monomers in the presence of a polymer selected from the group consisting of polycarbonate, polyester, polyestercarbonate, polyolefin, polyacrylate and polymethacrylate.

According to a ninth embodiment, the invention relates to a composition according to one of embodiments 1 to 7, characterized in that as component C, a block or graft polymer is used, prepared by reaction of an epoxide group-containing styrene polymer with an OH-containing polymers selected from the Group consisting of polycarbonate, polyester or polyestercarbonate.

According to a tenth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that component C does not contain a graft polymer having a core-shell structure and a rubber-elastic graft base.

According to an eleventh embodiment, the invention relates to a composition according to one of the preceding embodiments, wherein component B contains from 5 to 95% by weight of component B1, preferably from 20 to 80% by weight, based in each case on component B.

According to a twelfth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that component D comprises at least one phosphorus-containing flame retardant of the general formula (IV)

is in which

R ¹ , R ² , R ³ and R ⁴ independently of one another each optionally halogenated Ci to Cs-alkyl, each optionally substituted by alkyl Cs to Cö-cycloalkyl, CÖ to C ₂ o-aryl or C7 to Cn-aralkyl -Rest, now dependent on each other 0 or 1, q an integer value from 1 to 30, as well X is a polynuclear aromatic radical having 12 to 30 C atoms, which is optionally substituted by halogen and / or alkyl groups.

According to a thirteenth embodiment, the invention relates to a composition according to embodiment 12, characterized in that component D is a compound according to the following formula (V)

According to a fourteenth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that component E is a reinforcing filler and is in particular selected from particulate fillers, fibrous fillers or mixtures of these, preferably talc, kaolin, wollastonite, glass fiber, more preferably talc, glass fiber or mixtures of these.

According to a fifteenth embodiment, the invention relates to a composition according to embodiment 14, characterized in that the component E contains or consists of talc and the talc an MgO content of 28 to 35 wt .-%, in particular from 30.5 to 32 wt. -%, has a SiO 2 content of 55 to 65 wt .-% and an A1203 content of less than 1 wt .-%.

According to a sixteenth embodiment, the invention relates to a composition according to embodiment 15, characterized in that the talc has a particle size d50 of 0.7 to 2.5 μιη. According to a seventeenth embodiment, the invention relates to a composition according to one of the embodiments 14 to 16, characterized in that the component E contains or consists of glass fibers and the glass fibers in particular a diameter of 5 to 25 μιη and a length of 1 to 20 mm have, preferably a diameter of 6 to 20 μπι and a length of 2 to 10 mm. According to an eighteenth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that component A is phenolic OH Has groups and the stoichiometric ratio of the epoxy groups of component C) to the phenolic OH groups, the component A is at least 1: 1, in particular at least 1.1: 1, preferably at least 1.2: 1.

According to a nineteenth embodiment, the invention relates to a composition according to embodiment 18, characterized in that component A has a weight fraction of phenolic OH groups of 50 to 2000 ppm, preferably 80 to 1000 ppm, particularly preferably 100 to 700 ppm.

According to a twentieth embodiment, the invention relates to a composition according to one of the preceding embodiments, characterized in that as component F one or more additives are used from the group consisting of flame retardant synergists, anti-dripping agents, lubricants and mold release agents, flowability adjuvants, antistatic agents, conductivity additives, stabilizers, antibacterial additives, scratch-resistant additives, IR absorbents, optical brighteners, fluorescent additives, dyes, pigments and Bronsted acid compounds.

According to a twenty-first embodiment, the invention relates to a composition according to one of the preceding embodiments, comprising or consisting of:

Bl) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

C) 0.1 to 10.0 wt .-%, preferably 0.3 to 8.0 wt .-%, more preferably 0.5 to 6.0

Wt .-%, most preferably 3.0 to 6.0 wt .-% of a polymer containing based on styrene and an epoxy group-containing vinyl monomer structural elements, D) 1.0 to 20.0% by weight, preferably 2.0 to 18.0% by weight, more preferably 3.0 to 16.0% by weight, most preferably 5.0 to 15, 5% by weight of phosphorus-containing flame retardant,

F) 0.1 to 10.0% by weight, preferably 0.2 to 8.0% by weight, more preferably 0.3 to 6.0% by weight, most preferably 0.4 to 5, 5 wt .-% additives, wherein the component C has a weight ratio of styrene to on epoxy group-containing vinyl monomers derived structural elements of 100: 1 to 1: 1 and wherein the amounts of components A) to F) are independent of each other.

According to a twenty-second embodiment, the invention relates to a composition according to one of the preceding embodiments, comprising or consisting of:

A) from 50.0 to 95.0% by weight of at least one polymer selected from the group consisting of aromatic polycarbonate, aromatic polyester carbonate and aromatic polyester,

B) 1.0% to 35.0% by weight of polymer which is free of epoxide groups consisting of Bl) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

D) 1, 0 to 20.0% by weight of phosphorus-containing flame retardant,

E) 1.0 to 35.0 wt .-% filler, as well

F) 0.1 to 10.0 wt .-% additives, wherein the component C has a Gewi ratio of styrene to on vinyl groups containing epoxy group-containing structural elements of 100: 1 to 1: 1.

According to a twenty-third embodiment, the invention relates to a composition according to one of the preceding embodiments, comprising or consisting of: A) 51.0 to 85.0% by weight, in particular 52.0 to 75.0% by weight, of aromatic polycarbonate and / or aromatic polyester carbonate,

B) 2.0 to 25.0 wt .-%, in particular 3.0 to 15.0 wt .-% polymer which is free of epoxide groups consisting of

Bl) rubber-modified graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

E) 3.0 to 30.0 wt .-%, in particular 5.0 to 25.0 wt .-% filler, and

wherein the amounts of components A to F are independent of each other.

According to a twenty-fourth embodiment, the invention relates to a process for the preparation of a molding composition, characterized in that the constituents of a composition according to one of embodiments 1 to 23 are mixed together at a temperature of 200 to 320 ° C, in particular at 240 to 320 ° C, preferably at 260 to 300 ° C.

According to a twenty-fifth embodiment, the invention relates to a molding compound which is obtained or obtainable by a method according to embodiment 24.

According to a twenty-sixth embodiment, the invention relates to a molding compound according to embodiment 25, characterized in that this

When using glass fibers as component E less than 20 ppm of free bisphenols, in particular less than 15 ppm, preferably less than 10 ppm and when using talc as component E less than 100 ppm of free bisphenols, in particular less than 95 ppm , preferably less than 90 ppm.

According to a twenty-seventh embodiment, the invention relates to a use of a composition according to one of embodiments 1 to 23 or a molding composition according to embodiment 25 or 26 for the production of moldings. According to a twenty-eighth embodiment, the invention relates to a shaped body obtainable from a composition according to one of the embodiments 1 to 23 or from a molding compound according to embodiment 25 or 26.

The invention will be explained in more detail below with reference to examples.

Examples

Component A:

Linear polycarbonate based on bisphenol A having a weight-average molecular weight Mw of 24000 g / mol (determined by GPC in methylene chloride with polycarbonate based on bisphenol A as standard) and a weight fraction of phenolic OH groups of 140 ppm.

Component B l a:

Graft polymer of 43 parts by weight of a copolymer of styrene and acrylonitrile in the ratio of 73:27 to 57 parts by weight of a particulate crosslinked polybutadiene rubber (particle diameter of dso = 350 nm) prepared by emulsion polymerization.

Component Bl b:

Graft polymer of 53 parts by weight of a copolymer of styrene and acrylonitrile in the ratio of 73:27 to 47 parts by weight of a particulate crosslinked polybutadiene rubber (particle diameter of dso = 280 nm) prepared by emulsion polymerization

Component B2:

SAN copolymer with an acrylonitrile content of 23% by weight and a weight average

Molecular weight of about 130,000 g / mol (determined by GPC in tetrahydrofuran with polystyrene as standard).

Component C:

Modiper ™ CL430-G (NOF Corporation, Japan): Polymer containing blocks of polycarbonate and blocks of glycidyl methacrylate-styrene-acrylonitrile polymer obtained by peroxide-initiated radical graft polymerization of 30% by weight of a monomer mixture of styrene, acrylonitrile and glycidyl methacrylate in the ratio 15: 6: 9 wt .-% in the presence of 70 wt .-% of linear polycarbonate based on bisphenol A.

The epoxide content of component C measured according to ASTM D 1652-1 in dichloromethane is 2.4% by weight.

Component D:

Bisphenol A-based oligophosphate

Component El:

Chopped glass fiber with a mean diameter of 13 μπι and an average cut length of 4.5 mm.

Component E2:

Talc, HTP Ultra from Imi Fabi with an MgO content of 31, 0 wt .-%, a SiC content of 61.5 wt .-% and an Al2O3 content of 0.4 wt .-%, average particle size dso = 0.5 μm.

Component F1:

Cycolac INP 449: Polytetrafluoroethylene (PTFE) preparation from Sabic consisting of 50 wt% PTFE contained in a SAN copolymer matrix.

Component F2:

pentaerythritol tetrastearate

Component F3:

Irganox B 900 (manufacturer: BASF).

Production and testing of the molding compositions according to the invention

The components were mixed on a twin-screw extruder ZSK-25 from Werner & Pfleiderer at a melt temperature of 260.degree. The moldings were produced at a melt temperature of 260 ° C and a mold temperature of 80 ° C on an injection molding machine type Arburg 270 E.

The MVR is determined according to ISO 1 133 (2012 version) at 240 ° C using a 5 kg punch load. This value is indicated in Table 1 as the "MVR value of the original sample". As a measure of the resistance to hydrolysis, the change in the VR during storage of the granules for 5 days at 95 'C and 100% relative humidity. The impact resistance (bond line strength) is determined at 23 ° C. according to ISO 179 / ieU (version from 2010) on test specimens measuring 80 mm × 10 mm × 4 mm.

The melt viscosity is determined according to ISO 11443 (version of 2014) at a tem perature of 260 ° C and a shear rate of 1000 s ^"1 .

The elongation at break is determined according to ISO 527 (version of 1996) at room temperature.

Flame retardancy is evaluated according to UL94V on bars measuring 127 x 12.7 x 1.5 mm. As a measure of chemical resistance is the stress cracking (ESC) resistance in toluene / isopropanol (60/40 parts by volume) at room temperature. The time is determined until the stress crack-induced fracture failure of a tested at 260 ° C melt temperature specimen dimensions of 80 mm x 10 mm x 4 mm, which is applied by means of a clamping template with an external Randfas erdehnung of 2.4% and completely immersed in the medium. The measurement is based on ISO 22088 (version of 2006).

The content of free bisphenol A monomer was determined by means of high-performance liquid chromatography (HPLC) with diode array (DAD) detector on granules produced by twin-screw extruder. For this purpose, the granules were first dissolved in dichloromethane and then the polycarbonate reprecipitated with acetone / M ethanol. The precipitated polycarbonate and all insoluble in the Umfällungsmittel portions of the compositions were filtered off and the filtrates are then concentrated on a rotary evaporator to near dryness. The residues were analyzed by HPLC-DAD at room temperature (gradient: acetonitrile / water, stationary phase C-18).

Table 1: Molding compounds with glass fibers as filler and their properties

The examples of Table 1 show that only with the compositions containing the glass fiber content of the invention and component C a combination of improved mechanical properties, reduced flame retardancy, improved chemical resistance in the ESC test, improved hydrolysis resistance, improved stability at elevated temperature storage and a lower residual content of BPA is achieved. A particularly favorable profile of properties is achieved when the proportion of component C is in the range from 3.0 to 6.0% by weight. The above properties are most improved and the increase in melt viscosity is still within acceptable limits.

Table 2: Molding compounds with talc as filler and their properties

The examples of Table 2 show that only with the compositions containing the inventive content of talc and component C a combination of improved mechanical properties, reduced flame retardancy, improved chemical resistance in the ESC test, improved hydrolysis resistance, improved stability on storage at elevated temperature and a lower residual content of BPA is achieved. A particularly favorable profile of properties is achieved when the proportion of component C is in the range from 3.0 to 6.0% by weight. The above properties are most improved and the increase in melt viscosity is still within acceptable limits.

Claims

claims:

Composition for producing a thermoplastic molding composition, wherein the composition contains or consists of at least the following constituents:

B) 1.0% to 35.0% by weight of polymer which is free of epoxide groups, consisting of B 1) chewable modifying graft polymer and

B2) optionally rubber-free vinyl (co) polymer,

C) 0.1 to 10.0 wt .-% of a polymer containing Styroi and a

Epoxy group-containing vinyl monomer returning structural elements,

D) 1, 0 to 20.0% by weight of phosphorus-containing flame retardant,

E) 1, 0 to 35.0 wt .-% filler, and

F) 0, 1 to 10.0 wt .-% additives, wherein the component C has a weight ratio of Styroi to going back to epoxy group-containing vinyl monomers structural elements of 100: 1 to 1: 1.

2. Composition according to claim 1, characterized in that component C is a block or graft polymer.

3. Composition according to claim 1 or 2, characterized in that component C contains structural units derived from at least one further copolymerizable with Styroi epoxy-free vinyl monomers and that the weight ratio of

Styroi to from the Styroi copolymerizable epoxy group-free vinyl monomers derived structural units in component C in the range of 85:15 to 60:40 ..

4. Composition according to one of the preceding claims, characterized in that component C contains structural units derived from acrylonitrile.

5. Composition according to one of the preceding claims, characterized in that the epoxide-containing vinyl monomer used to produce the component C is glycidyl acrylate, glycidyl methacrylate, glycidyl methacrylate, glycidyl itaconate, allyl glycidyl ether, vinyl glycidyl ether, vinyl benzyl glycidyl ether and / or propenyl glycidyl ether, in particular glycidyl methacrylate and / or that the component C is has an epoxide content measured in accordance with ASTM D 1652-1 1 in dichloromethane of 0.1 to 5% by weight.

6. The composition according to any one of the preceding claims, wherein that component B contains 5 to 95 wt .-% of component Bl, preferably 20 to 80 wt .-%, each based on the component B.

7. Composition according to one of the preceding claims, characterized in that the

Component D at least one phosphorus-containing flame retardant of the general formula (IV)

is in which

R \ R ² , R 'and R ⁴ independently of one another each represent an optionally halogenated C 1 to C 8 -alkyl radical, in each case optionally alkyl-substituted C 5 to C 6 -cycloalkyl, C 2 to C 20 aryl or C _? to CV aralkyl radical. n is independently 0 or 1, q is an integer from 1 to 30, and a polynuclear aromatic radical having 12 to 30 C atoms, which is optionally substituted by halogen and / or alkyl groups, mean, wherein component D is in particular a compound according to is the following formula (V)

8. Composition according to one of the preceding claims, characterized in that component E is a reinforcing filler and in particular is selected from particulate fillers, fibrous fillers or mixtures of these, preferably from talc, kaolin, wollastonite, glass fiber, more preferably talc. Glass fiber or mixtures of these, wherein the component E is particularly preferably or consists of talc talc an MgO content of 28 to 35 wt .-%, in particular from 30.5 to 32 wt .-%, a SiCX Gehalr of 5 to 65 wt .-% and an Al ₂ O ₃ content of less than 1 wt .-%.

9. The composition according to claim 8, characterized in that the component E contains or consists of glass fibers and the glass fibers in particular have a diameter of 5 to 25 μιη and a length of 1 to 20 mm, preferably a diameter of 6 to 20 μηι and a Length from 2 to 10 mm.

10. The composition according to any one of the preceding claims, characterized in that the component A has phenolic OH groups and the stoichiometric ratio of the epoxide groups of component C) to the phenolic OH groups, the component A is at least 1: 1, in particular at least 1, 1: 1, preferably at least 1.2: 1, wherein the component A preferably has a weight fraction of phenolic OH groups of 50 to 2000 ppm, preferably 80 to 1000 ppm, more preferably 100 to 700 ppm.

11. A composition according to any one of the preceding claims comprising or consisting of:

A) 48.0 to 74.0 wt .-%, aromatic polycarbonate and / or aromatic polyester carbonate,

B) 6.0 to 14.0 wt .-%, polymer which is free of epoxide groups consisting of

B 1) rubber-modified graft polymer and B2) optionally rubber-free vinyl (co) polymer, C) 3.0 to 6.0% by weight of the epoxy-vinyl polymer containing or consisting of structural units derived from styrene and from an epoxide-group-containing vinyl monomer,

D) 5.0 to 1, 5 wt .-% phosphorus-containing flame retardant,

E) 5.0 to 23.0 wt .-% filler, as well

F) 0.4 to 5.5% by weight of additives,

wherein the amounts of components A to F are independent of each other.

12. A process for the preparation of a molding composition, characterized in that the components of a composition according to any one of claims 1 to 11 are mixed together at a temperature of 200 to 320 ° C, in particular at 240 to 320 ° C, preferably at 260 to 300 ° C.

13. Molding composition, obtained or obtainable by a process according to claim 12.

14. Use of a composition according to any one of claims 1 to 11 or a molding composition according to claim 13 for the production of moldings.

15. Shaped body, obtainable from a composition according to any one of claims 1 to 11 or from a molding composition according to claim 13.