JPS6040156A - Thermoplastic molding composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to (, <) to, ooo to 200.0005
0 parts by weight, (B) -50 to 5 parts by weight of thermoplastic polyalkylene terephthalate, and if appropriate (C) -20°C
an elastic polymer θ~30 having a very low glass transition temperature;
Preferably 1-20. The polycarbonate component (! A) is a thermoplastic containing 1 to 20% by weight, preferably 1 to 16% by weight, based on the sum of (, () + (D)), and 2 to 10% by weight, based on the sum of (, () + (D)). (, Z)).

Components (, I) to (D) Component (, 4) The aromatic polycarbonate (A) according to the present invention is, for example, a known homopolycarbonate or copolycarbonate based on at least one of the following dienols, and a polycarbonate of these polycarbonates. to be understood as mixtures: hydroquinone, resorcinol, dihydroxydiphenyl, bis-(hydroxyphenyl)"'ct~Cg-furcan, bis-(hydroxyphenyl)"'ca~C0-
Cycloalkane, bis-(hydroxyphenyl) sulfide, bis-(hydroxyphenyl) ether, bis-
(hydroxyphenyl)ketone, bis-(hydroxyphenyl)sulfoxide, bis-(hydroxyphenyl)
Sulfone and α,α′-bis-(hydroxyphenyl)
-diisopropylbenzene.

These and other suitable diphenols are described, for example, in U.S. Pat.
No. 3.148.172, No. 3.062゜78
No. 1, No. 4991.273 and No. 2,999, 8
It is described in No. 46.

Examples of suitable diphenols include 4,4'-dihydroxydiphenol, 2,4-bis-(4-hydroxyphenyl)-2-methylbutane, α,α'-bis-(4-hydroxyphenyl)-p- Diimpropylbenzene, bis-
(4-hydroxyphenyl) ether, bis-(4-hydroxyphenyl) sulfone and hibis-(4-hydroxyphenyl) ketone.

Examples of particularly suitable diferent holes include the following:
2.2-bis-(4-hydroxyphenyl)-propane, bis-(hydroxyphenyl)-methane, bis-(4-hydroxyphenyl)sulfone and 1.1-bis-(4-hydroxyphenyl)- Cyclohexane.

The amount of aromatic polycarbonate (A) is small, preferably 0.
．． 05 to 200 mol % (based on the diphenol used) of a trifunctional or more trifunctional compound, such as one having 3 or more than 3 phenolic hydroxyl groups. It can be branched.

Aromatic polycarbonate (A) generally has a molecular weight of 10,000 to
200,000. Preferably 20. OO0～go,
Average molecular weight M measured by light scattering method of o o o
It should have w.

For example, a small amount of low molecular weight polycarbonate having an average of 2 to 20 condensations may be added to 10. OOO~200.
It can be mixed into high molecular weight polycarbonates having a Mw of 0.000.

For example, a chain terminator such as phenol, halogen phenol or alkylphenol can be added to polycarbonate (A).
A known method is used to adjust the molecular weight Mw of the calculated amount.

The polycarbonate (A) used in the present invention can be prepared by a known method using a phase boundary method (phase boundary process).
ess ) or a method in a homogeneous solution (pyridine method)
I) or, if appropriate, by the melt transesterification method.

Component <E) Polyalkylene terephthalate CB> according to the present invention comprises reactive products of aromatic dicarboxylic acids or their reactive derivatives (e.g. dimethyl ester) and aliphatic, cycloaliphatic or araliphatic diols, as well as their reactive products. It is a mixture of reactive products.

Suitable polyalkylene terephthalates (B) may be prepared by known methods from terephthalic acid (or its reactive derivatives, such as dimethyl terephthalate) and aliphatic or cycloaliphatic diols having 2 to 10 carbon atoms. [ Kwns t s -toff-Hand
blLch (plastics Handbook Volume ■, page 695 et seq., Carl HanserVerl
og, Munich 1973 J.

Preferred polyalkylene terephthalates (B) contain at least 80 mol%, preferably at least 90 mol%, of terephthalic acid groups, based on the dicarboxylic acid component, and at least 80 mol%, preferably at least 90 mol%, based on the diol component. ethylene glycol group and/or butane-1,4-diol group.

Suitable polyalkylene terephthalates (B) include, in addition to terephthalic acid, up to 20 mol % of other aromatic or cycloaliphatic dicarbons having from 8 to 14 carbon atoms or fatty acids having from 4 to 12 carbon atoms. Group dicarboxylic acid groups, such as heptadalic acid, isophthalic acid, naphthalene-2,
6-dicarboxylic acid, 4,4'-diphenyldicarboxylic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, or cyclohexane diacetic acid.

Suitable polyalkylene terephthalate (B) contains 20 mol % in addition to ethanediol or butanediol groups.
other aliphatic diols having from 3 to 12 carbon atoms or cycloaliphatic diols having from 6 to 21 carbon atoms, such as propane-1,3-diol, 2-ethyl-propane-1°3-diol , neopentyl glycol,
Pentane-1,5-diol, hexane-1,6-diol, cyclohexane-1,4-dimetatool 3-methylpentane-2,4-diol, 2-methylpentane-
2,4-diol, 2,2,4-trimethylpentane-
1,3- or 1,6-diol, 2-ethylhexane-1,3-diol, 2,2-diethylpropane-1,
3-diol, hexane-2,5-diol, 1,4-
Di(β-hydroxyethoxy)-benzene, 2,2-
bis-(4-hydroxycyclohexane)-propane,
2,4-dihydroxy-1,1,3,3-tetramethylcyclobutane, 2,2-bis-(3-β-hydroxy-
ethoxyphenyl)-furopane and 2,2-bis-(4
-hydroxypropoxy-phenyl)-propane (DE-O5) 4407.674, DE-O5 2.407.776 and DE-O5 932).

Polyalkylene terephthalates (B) can be used, for example, in German Patent Application No. 1.900.270 and in U.S. Pat.
Relatively small amounts of trihydric or tetrahydric alcohols or tribasic alcohols, such as those described in US Pat. Examples of suitable branching agents are trimesic acid, trimellidic acid, trimethylolethane or monopropane and pentaerythritol.

It is recommended to use less than 1 mol % of branching agent based on the acid component.

Particularly suitable polyalkylene terephthalates (B) are those prepared solely from terephthalic acid or its reactive derivatives (for example its dialkyl esters) and ethylene glycol and/or butane-1,4-diol, and polyalkylene terephthalates thereof. It is a mixture of terephthalates.

Other suitable polyalkylene terephthalates (1 include copolyesters prepared from at least two of the above-mentioned acid components and/or at least two of the above-mentioned alcohol components; particularly suitable copolyesters of 1J-(ethylene Arashi which is glycol/butane-1,4-diol) terephthalate.

The polyalkylene terephthalates preferably used as component (B) generally each have a
．． 4-1.5dl/11. Preferably 0.5~x, 3d
It has an intrinsic viscosity of 1/l, in particular 0.6 to 1.2 d ll/El.

Component (C) Elastic polymers (C) which can be used according to the invention include copolymers, especially graft copolymers, which can be heated at -20°C.
It has a glass transition temperature of (meth)acrylates having carbon atoms in the alcohol component; i.e.
erOrganischen ChemieJ (“M
methods of Organic Chemistry
yJ), (Houben-Weyl), 14th/
Volume 1, Georg Thieme Verlag, Str.
bttgart 1961.393-406, and C
, B. Bucknall.

“Toughened Plasticsj, App
l.

5science Publishers, London
Preferred polymers (C) have a gel content of greater than 20% by weight, preferably greater than 40% by weight.

A preferred polymer (C) contains 15 to 45 parts of vinyl acetate groups,
It is an ethylene/vinyl acetate copolymer having a melt index of from non-flowable to 1000, preferably from 0.1 to 20, when measured at 190 DEG C. under a load of 2.16 k p according to DIN 53,735.

Examples of suitable polymers (C) include the so-called EPM and EpD.
M, in which the weight ratio of ethylene groups to propylene groups is in the range 40:60 to 65:35.

Mu-= of non-cross-linked EPM-4 or EpDM rubber
-(No one y) Viscosity (ML 1+ 4/10
0° C.) is between 25 and 100°C, preferably between 35° and 90°C. The gel content of the non-crosslinked EpM or EPDM rubber is less than 1% by weight.

The ethylene/propylene copolymer (EPM) used has virtually no double bonds, whereas the ethylene/propylene/genter polymer (EPDM) has 1 to 2 double bonds.
0/1000 carbon atoms. Examples of suitable diene monomers in EpDM include the following:
: Conjugated dienes such as isopropylene and butadiene, and non-conjugated dienes having 5 to 25 carbon atoms such as 1
, 4-pentadiene, 1,4-hexadiene, 1,5-
Hexadiene, 2,5-dimethyl-1,5-hexadiene and 1,4-octadiene; cyclic dienes such as cyclopentadiene, cyclohexadiene, cyclooctadiene and dicyclopentagelbornene and 2-isopropenyl-5 - norbornene, as well as tricyclodienes such as 3-methyl-tridichloro (5,2,1,0,'2
．． 6)-3,8-decadiene. Suitable examples include the non-conjugated dienes hexadiene-1,5-ethylidene-norbornene and dicyclopentadiene.

The diene content in EpDM is preferably between 0.5 and 10% by weight.

Such EPM and E p D III rubbers are described, for example, in German Patent Application No. 2.808.709.

Other suitable polymers <C> are selectively hydrogenated block copolymers of vinyl aromatic monomers (X) and conjugated dienes of the X-Y type (Y). These block copolymers can be produced by known methods. Generally used in the production of styrene/diene block copolymers to prepare suitable X-Y block copolymers from styrene, α-methylstyrene, vinyltoluene, etc., and conjugated dienes such as butadiene, isoprene, etc. and[
Encyclopedia of polymerSc
"Ience and Technology", No. 15
Volume, Interscience, N, Y, (19? 1
), the techniques described on pages 508 et seq. can be applied. Selective hydrogenation can be carried out by routes known per se and essentially completely hydrogenates the ethylenic double bonds, leaving the aromatic double bonds essentially unaffected and stressed. It means ku゛. Such selectively hydrogenated block copolymers are described, for example, in DE-A-3.000.282.

Examples of suitable polymers (C) include polybutadiene, butadiene/butadiene grafted with styrene and/or acrylonitrile and/or alkyl (meth)acrylates.
Styrene copolymers and poly-(meth)-acrylates,
For example also kite styrene or copolymers of alkylstyrene and conjugated dienes (high impact polystyrenes), i.e. of the type described in German Patent Application No. 1,694,173 (-U.S. Pat. No. 3,564,077) Examples of other suitable graft polymers (C) include polybutadiene grafted with acrylates or methacrylates, vinyl acetate, acrylonitrile, styrene or alkylstyrene, and copolymers.

Diene/styrene copolymers, butadiene/acrylonitrile copolymers, polyisobutyne or polyimpropene, for example DE 2.348.3
No. 77 (=U.S. Pat. No. 3,919,353).

Examples of particularly suitable polymers (C) include A 135 polymers, such as those described in German Patent Application No. 2.035.390.
(-US Patent No. 3.644.574) or German Patent Application No. 2.248.242 (= British Patent No. 1.409.275).

Examples of particularly suitable polymers CC) include 10 to 40% by weight, preferably 10 to 35, in particular 15 to 25% by weight, based on the grafted product, of at least one (meth)acrylic acid and/or or 10 to 35% by weight, preferably 20 to 35% by weight, based on the mixture, of Okibe Rironi) I
65 to 90% by weight, preferably 65 to 80% by weight, based on the mixture, of a styrene mixture, preferably 65 to 90, in particular 75 to 85% by weight, of a butadiene polymer. Particularly preferably, the gel content of the graft base (2) is 70% (measured in toluene), and the degree of grafting G is from 0.115 to 055, and the average particle diameter d50 of the graft polymer (C) is 0.
．． It is 2 to 06 μm, preferably 0.3 to 0.5 μm.

(Meth)acrylate l is an ester theal of acrylic acid or methacrylic acid and m alcohols having 1 to 8 carbon atoms.

In addition to the butadiene groups, the graft base (2) contains up to 30% by weight, based on (2), of groups of other ethylenically unsaturated monomers, such as styrene, acrylonitrile or acrylics having 1 to 4 carbon atoms in the alcohol component. Acids or esters of methacrylic acid (e.g. methyl acrylate,
ethyl acrylate, methyl methacrylate and ethyl methacrylate). A preferred graft base is made from pure polybutadiene.

Generally, the grafting monomer l wants to be completely grafted onto the grafting base in the grafting reaction.
The graft polymers (C) used according to the invention contain, in addition to the actual grafted polymer, homopolymers and, if appropriate, copolymers of the graft monomers used for grafting.

The degree of grafting G represents the weight ratio of grafted monomer to graft base and is dimensionless.

The average particle diameter d50 is 5 for particles larger than d50 and 5 for particles smaller than 5, respectively.
It is the diameter that exists at 0%. This one is ultracentrifugal measurement C
W, 5choltán, Il, Lange.

Kolloid, Z, and Z, polymere2
50 ('1972), 782-796] or by electron microscopy and subsequent particle counting (G, Kampf.

Il, 5chuster, Angew, Afakrom
olekw-1are Ch, emie 14, (19
70), 111-129] or by light scattering measurement.

There is a graft polymer of 2 to 75% by weight of at least one polymerizable ethylenically unsaturated monomer based on rubber and (b) a graft polymer, the homogeneous polymer being (a)
The copolymer, as a graft monomer, will have a glass transition temperature of 20° C. or higher if it is formed in the absence or in the absence of oxidation.

The acrylate rubber of polymer <C> is preferably a polymer of alkyl acrylates, if appropriate with up to 40% by weight of other polymerizable ethylenically unsaturated ovariomers. The acrylate rubber (as described below) which is also used as the graft base (a) is already coated with a diene rubber core (co
The polymerized diene rubber core, which is a graft product with re), is not taken into account when calculating this percentage. Suitable polymerizable acrylates include C7-C8 alkyl esters such as methyl, ethyl, butyl, octyl and 2-ethylhexyl esters; halogeno! Included are alkyl esters, preferably halogeno-01-C8-alkyl esters such as chloroethyl acrylate, and aromatic esters such as benzyl acrylate and enethyl acrylate. These can be used individually or as a mixture.

The acrylic rubber (a) can be non-crosslinked or crosslinked, and is preferably partially crosslinked.

Monomers having more than one polymerizable double bond can be copolymerized to achieve cross-linking. Suitable examples of cross-linking monomers include unsaturated monocarboxylic acids having 3 to 8 carbon atoms and unsaturated-hydric alcohols having 3 to 12 carbon atoms or 2 to 4 OH groups and 2 carbon atoms. -20 esters of saturated polyols, such as ethylene glycol dimethacrylate or allyl methacrylate; and polyunsaturated heterocyclic compounds, such as trivinyl and triallyl cyanuric acid and isocyanurates, and tris-acryloyl-S. -) 1j azines, and polyfunctional vinyl compounds such as di- and trivinylbenzene; and also triallyl and diallyl phosphates.

Suitable cross-linking monomers include allyl methacrylate, ethylene glycol dimethacrylate, diallyl phthalate, and heterocyclic compounds containing at least three ethylenically unsaturated groups.

Particularly preferred external cross-linking monomers include the cyclic filler monomers S-triazine and triallylbenzene.

The amount of cross-linking monomer is preferably 0.02 to 5 M%, especially 0.0'5 to 5 M%, based on the kraft base (a).
It is 2% by weight.

In the case of cyclic crosslinking monomers having at least three ethylenically unsaturated groups, it is advantageous to limit their amount to 1% by weight of the graft base (a).

In addition to acrylate, graft base (a)
Suitable "other" polymerizable ethylenically unsaturated monomers that can be used in the preparation of the present invention include, for example, acrylonitrile, styrene, alpha-methylstyrene, acrylamide and vinyl-〇, -C6-alkyl ethers. Graft base (
Acrylate rubbers suitable as α) have a gel content of 60
There are emulsion polymers with weight %.

The gel content of the graft base (α) is determined in dimethylpolamide at 25°C (M, IIoff-ma
nn, H. Krotner and R. Kuhn.

polymeranalytik I 1Lnd I[
(polymer analysis I and
II), Georg Thie! ＞ne Verlog
, Stuttgart 1977).

The acrylate rubber as the graft base (a) can also be a diene rubber with a cross-linked core of one or more conjugated dienes such as polybutadiene, or a conjugate of a conjugated diene and an ethylenically unsaturated monomer such as styrene and/or acrylonitrile. The product can be a polymer-containing product.

The E content of the polydiene core in the graft base ((Z) can be 0.1 to SOZ amount %, preferably 10 to 50% by weight, based on (a). Shell (
The shell) and core can be independently of each other non-cross-linked, partially cross-linked, or highly cross-linked.

The following can be summarized as particularly suitable graft bases (α) for polyacrylate-based graft polymers (c):1. Acrylate polymers and copolymers without a diene rubber core and acrylate polymers and copolymers with a two-diene rubber core.

The grafting yield, i.e. the proportion of monomer (b) grafted and the proportion of grafting monomer (b) used, is generally 20
~80% by weight. Measurement is M, Hoff-many>
, H. Kromer and RtKuhn.

Polymer analysis
Analysis), Volume 1, Georg 'l'h
terneVerlag, Stuttgart 197
It can be carried out according to the procedure described in 7.

Preferred graft monomers (b) include α-methylstyrene,
Styrene, acrylonitrile, methyl methacrylate or mixtures of these monomers. A suitable graft monomer mixture is a mixture of styrene and acrylonitrile in a weight ratio of 90:10 to 50:50.

Such graft polymers (C) based on polyacrylates are disclosed, for example, in the German Patent Application Publication DE-As.
No. 2.444.584 (= U.S. Patent No. 4,022.7
48) and German Patent Application No. 2.726, 25
6 (=US Pat. No. 4.096.202).

Particularly preferred graft polymers of this type contain from 2 to 20% by weight, based on (C), preferably from 2 to 15% by weight of monomer (b), without the presence of a suspending agent ( 80-9.8% by weight, preferably 85-97% by weight, based on C), obtained upon grafting onto a completely crushed latex suspended in water. The powdered graft polymer obtained is then dried and as a mixture according to the invention (c
) average particle size d,. is 0.05 to 3μ, preferably 0
．． It is homogenized with the other components in the desired proportions under the action of shearing forces to a thickness of 1 to 2 μm, in particular 0.2 to 1 μm.

The expression "in the absence of a suspending agent" means that there are no substances capable of suspending the grafting monomer (6) in the aqueous phase, depending on the type and amount. This definition does not exclude the presence of substances that have a suspending effect, for example, during the preparation of the krafted grafted base; in such cases, the flocculant or precipitant used to disrupt the latex (α) It must be added in an amount that compensates for the suspending effect of the substances used in the preliminary stage; in other words, the Niger raft monomer (6
) must ensure that no (stable) emulsions form in the aqueous phase.

The graft polymer (C) prepared in this way without the presence of a suspending agent can be dispersed in other resin components as a component of the molding composition according to the invention, and can be treated for a long time at elevated temperatures. The ultimate that exists without physical change;.

can produce small particle sizes.

It is meant to be essentially comparable in number, shape and size to the kraft polymer particles incorporated into the other molten resin components.

is obtained as an aqueous emulsion (latex) and the latex particles contain from 1 to 20% by weight, preferably from 1 to 10% by weight, based on (α), of monomers, the monomers being Acrylate rubbers which have already been grafted as aqueous emulsions and whose homogeneous polymers or copolymers have a glass transition temperature of >0° C. can also be used as graft bases (α).

Suitable rafted monomers of this type include alkyl acrylates, alkyl methacrylates, styrene, acrylonitrile, alpha-methylstyrene and/or vinyl acetate.

Such polymer bases (α) are prepared, for example, by emulsion polymerization or graft emulsion polymerization. However, these methods involve preparing acrylate rubbers in solution or bulk, followed by grafting with graft monomers, and then converting these rubbers into aqueous emulsions suitable for further grafting processing. It can also be prepared by conversion.

Thus, suitable graft bases (a) for the acrylate rubber of this particular embodiment include, in addition to the polymers indicated above, if appropriate a diene rubber core and ethylenically unsaturated polymerizable monomers. There are graft polymers prepared in aqueous phase emulsions from acrylate polymers or copolymers containing polymers.

Component CD> The polyether-imide-based thermoplastic used according to the invention has structural units of the formula (Xia), where "n" is the degree of polymerization, from 10,000 to 50. 000 corresponds to a number average molecular weight (un) of 1 mol.

This thermoplastic polyether-imide has a high heat strain (
These materials have a ViCat heating strain point above 200° C. when measured to DIN 53,450.

Polyether-imides can in principle be prepared by different methods using different intermediates.

Conventional methods use N-methylphthalimide as the starting material. This is nitrated at the 3= position and the bisphenol is reacted with the disodium salt of A, Bp
A(bis-rumethylphthalimide)-ether is produced. This is subjected to a condensation reaction with polyphenylene diamine to form a high molecular weight polyether-imide. Monofunctional amines, such as stearylamine, can also be used to control the molecular weight. Other synthesis methods are 3
Starting with the reaction of nitrophthalic anhydride with m-phenylenediamine followed by a condensation reaction with the disodium salt of bisphenol A. It is advantageous here to use monofunctional phenols as molecular weight regulators.

Further details are given, for example, in US Pat. No. 3,838,097. An example of a polynythyl-imide is commercially available "Ultem 1000™" from Massrs, General Electric.

Traditional field Components (A) to (D) are known as such.

Mixtures of polycarbonate and polyester are also known (for example, German Patent No. 1.187°793;
(see German Patent Application No. 1.694.124 and German Patent Application No. 2.622414).

Mixtures of polyesters and grafted polymers are likewise known (e.g. U.S. Pat. No. 3,919,353).
No. 3.564.077, German Patent Application No. 2.659.338 or U.S. Pat. No. 4.096
．． 202 and German Patent Application No. 2.72.6.
See No. 256].

Mixtures of polycarbonates and polymers are likewise known [for example, Patent Application Publication No. 18611/68 (Ongdai,
Priority Yu 196s June 30), U.S. Patent No. 3.663
．． No. 471, No. 3.437.631, No. 4.29
No. 9.928 or German Patent Application No. 1114,
See No. 494].

Mixtures of polycarbonates, polyesters and grafted polymers are likewise known (eg US Pat. No. 3,864,428, German Patent Application No. 2.3).
43.609, U.S. Patent No. 4,264,487, European Patent Application No. 25.920, U.S. Patent No. 4.257.937, European Patent Application No. 20.605, WO No. 80100972,
See German Patent No. 1,569,448 or British Patent No. 1.007.724].

Although molding compositions of polycarbonate, polyester, and elastomer composites have many positive properties, these do not meet certain requirements. Molded articles produced therefrom, especially thin molded articles, tend to exhibit distortion phenomena when exposed to heat for long periods of time, for example during lacquering.

Thus, it is urgently technically safe to raise the heating strain point of such molding compositions above 120° C. if possible. The physical and chemical properties of the terephthalate mixture should at the same time be largely preserved.

Polycarbonate, polyalkylene terephthalate and, if appropriate, one or more polymers, and the strain properties include small amounts of o, o, o',
Due to the presence of o'-tetramethylbisphenol polycarbonate, thermoplastic molding compositions which are affected in a very positive manner are in fact described in German Patent Application No. 3.11.
8.697. However, these mixtures suffer from the disadvantage that their toughness is impaired by the presence of 0,0°0', θ'-tetramethylbisphenol polycarbonate.

The mixtures according to the invention do not have this disadvantage.

It is noteworthy that the pie-cutting temperature of the mixtures of the present invention is significantly increased as a result of the substantially improved strain properties, since heat-straining of polycargonates with the addition of polyether-imide The reason for this is that the increase in energy consumption alone increases only slightly.

As a result of the polyether-imide addition, the molded articles produced from the molding compositions according to the invention do not distort when stored at 130 DEG C. This molding can therefore be lacquered without problems using suitable lacquering threads and is resistant to benzine and used for multicomponent automobiles with high impact values even at low temperatures. be able to.

The molding compositions according to the invention can be prepared in customary mixing equipment, such as mills (η>1ll), kneaders and axle screw and multi-screw extruders. It is suitable to first premix the polycarbonate and polyether-imide and only to mix the remaining components in a subsequent operation.

Thus, the present invention also provides (, () 10,000 to 2o
Mt between o, o o o, average number of molecules Mw (&1
(1) 95 to 50 M parts of an aromatic polycarbonate having thermoplastic properties (measured by light scattering method), (B) 50 to 5 parts by weight of a thermoplastic polyalkylene terephthalate, if appropriate ((1') An elastic polymer having a glass transition temperature lower than -20°C θ~30, preferably 1~20, especially 3
~15: L4) + (B
) + (C) Those whose total weight is 100 parts by weight, and (D) 1 to 20 weight parts, weight scales, or 1 to 16 weight parts, weight scales based on the total of (D) (Al + CD). 2
In producing a thermoplastic (D) molding composition based on a polyether-imide of ~1O
Components (, () and (D) are homogenized in a suitable mixing device at a temperature between 290°C and 350°C, the mixture is then granulated and component CB) and if appropriate component (C)' The present invention relates to a method for producing the molding composition, characterized in that the mixture is mixed at a temperature between 260°C and 290°C in a subsequent operation.

Furthermore, the invention provides an amount of ether-imide in an amount of 1 to 20% by weight, preferably 1 to 16 m, in particular 2 to 10 % by weight, based in each case on the sum of polycarbonate (4) and thermoplastic CD). heat plastic paste
The present invention relates to a thermoplastic aromatic polycarbonate having a weight average molecular weight Mtu (Mw measured by light scattering method) between 10.000 and 200.000, characterized in that it contains (D).

Further, the present invention provides L4) + CB) + (〃
) and, if appropriate, these polycarbonates (/f) and polyethers for the production of molding compositions of (C).
The invention relates to the use of mixtures of imide-based thermoplastic CDs.

Molding compositions according to the invention (components (A) to increase the resistance to benzine)
All types of CD) may contain up to 5 parts by weight of ethylene monomer or copolymer as yarn standard. Related ethylene copolymers include polyethylene;
The groups consist, in addition to ethylene groups, of groups of other copolymerizable monomers up to 30%, based on the ethylene copolymer. Other co-ZL & possible monomers for the preparation of these ethylene copolymers include (meth)acrylic acid and the monomers indicated above for the preparation of the graft base and grafted component for polymer (C). There is a mass.

The molding composition according to the invention is made of polycarbonate and /l
fC is the usual additives for polyesters, such as lubricants and mold release agents, nucleating agents, stabilizers, fillers and reinforcing agents,
It may contain depressants and/or dyes.

Filled or reinforced molding compositions
The molding composition may contain up to 30% by weight of fillers and/or reinforcing agents. A preferred reinforcing agent is glass fiber.

Suitable fillers that may also have a reinforcing effect include glass beads,
These include mica, silicates, quartz, talc, titanium dioxide and wollastonite.

Polyester molding compositions treated with flame retardant generally contain flame retardant in concentrations of slightly more than 30% by weight, based on the flame retardant molding composition.

Known flame retardants for polycarbonates or polyethers or elastomeric polymers include, for example, polyhalogenodiphenyl, polyhalogenosophenyl ether, polyhalogenophthalic acid and its derivatives, polyhalogenooligo-
and polycarbonates are suitable; the corresponding bromine compounds are particularly effective. These also generally include synergistic agents (Htnt), such as antimony trioxide.

The molding compositions according to the invention of polycarbonate, polyalkylene terephthalate, polyether-imide based thermoplastics, if appropriate elastic monomers, and if appropriate other additives as mentioned above can be used to prepare molded products, such as bumpers, etc. Collision frames (CRα5hbarl or hlLb caps) can be treated with K and are thus used, for example, in the exterior parts of automobiles.

disaster example Ingredients used I.

Prepared by known methods from bisphenol A, phenol and phosgene, diluted with solvent 1 in methylene chloride at 25°C.
00m1. Relative viscosity 1.2 when measured at 0.52 per
85 polycarbonate.

n.

Messrs, General Electri, which carries the trademark “Ultem 1000 TM ■Re5in”
Polyether-imide made by c. This product has the chemical structure shown above. The number average molecule is 19,20.
0 (measured by vapor pressure osmosis). In methylene chloride at 25°C, solvent I Q Oml t) 0.5 f
The relative solution viscosity when measured at 1 degree was 1.228.

It has an intrinsic viscosity of 1.18 di/f when measured at 25 DEG C. in phenol-10-dichlorobenzene (1:l weight ratio) in an Ubbelohde viscometer and can be prepared using terephthalene dimethyl and butane in a known manner. −
Liptylene terephthalate produced from 1,4-diol.

■.

6-8 f/l 0 minute melt index CI)
190 under a load of 2.16kp per IN53.735
℃) and 0.924f/density of rust 3 (1) IN5
3.4'19) and prepared by known methods from ethylene, acrylic acid and 17t-butyl acrylic in an M ratio of 89:4 near.

■.

A double paste of 80% cross-linked polybutadiene (glue content greater than 70% as determined in toluene) and 20 parts of styrene and 28 parts of acrylonitrile were prepared by known methods. Graft polymers of grafted components.

■.

100 m7 of solvent at 25°C in methylene chloride! Current 0
．． U, 0°Ql, of relative viscosity of 1.29 at 52
QI - polycarbonate of tetramethylbisphenol A, phenol and phosgene.

Preparation of the molding composition The polycarbonate and polyether-imide were first eluted and homogenized in a twin-screw press at a temperature of 320 DEG C. under an N-accumulating atmosphere. Further, the remaining ingredients and premix were then homogenized as in the manufacturing process. Before exiting from the nozzle, the molten strαnd is degassed and cooled in water to form a

Claims (1)

[Claims] 1, (,4) 10,000 to 200. 95 to 50 parts by weight of a thermoplastic, aromatic polycarbonate having a weight average molecular weight Mw (Mw is measured by a light scattering method) between OO0, (B) 50 to 50 parts by weight of a thermoplastic polyalkylene terephthalate
5 parts by weight, and optionally 0 to 30 parts by weight of an elastomeric polymer having a glass transition temperature lower than ((:') -20°C, in each case (A) + (1 + (C) In a thermoplastic molding composition in which the total of 0 parts by weight is 100 parts by weight, the polycarbonate component (, f) is (A) + C
Thermoplastic molding compositions, characterized in that they contain from 1 to 20% by weight, based on the sum of D), of polyether-imide-based thermoplastics CD). 2. Claims characterized in that the polycarbonate component (A) contains from 1 to 16 "h" by weight, based on the sum of (A) + CD), of a polyether-imide-based thermoplastic (I)) Molding composition according to paragraph 1. 3. Thermoplastic (D) based on polyether-imide, in which the polycarbonate component (A) is 2 to 10% by weight, based on the sum of (A) + (D). A molding composition according to claim 1, characterized in that it contains: 4. Component (A) + CB>+(D) and, if appropriate, <C
> Karanashi, in addition also containing ethylene homopolymers or copolymers, lubricants, mold release agents, nucleating agents, stabilizers, fillers, reinforcing agents, flame retardants and/or dyes. A molding composition according to scope 4. 5. Components (, f) and CD) in a suitable mixing device
Homogenized at a temperature between 9°C and 350°C, the mixture is then granulated and treated with component (B) and, if appropriate, component (
C) A molding composition according to any one of claims 1 to 4, characterized in that the ethylene dye is mixed in the subsequent operation at a temperature between 260°C and 290°C. How things are manufactured. 6. Thermoplastic CD based on polyether-imide in an amount of 1 to 20 M%, in each case based on the sum of polycarbonate (A) and thermoplastic CD)
>10.000 to 20
A thermoplastic aromatic polycarbonate having a weight average molecular weight Mw (Mw is measured by light scattering method) of between 0.000. 7. Use of the polycarbonate according to claim 6 in producing the molding composition according to claim 1.