WO2000046295A1 - Matiere moulable a base de polyester a resistance elevee aux chocs - Google Patents

Matiere moulable a base de polyester a resistance elevee aux chocs Download PDF

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Publication number
WO2000046295A1
WO2000046295A1 PCT/EP2000/000701 EP0000701W WO0046295A1 WO 2000046295 A1 WO2000046295 A1 WO 2000046295A1 EP 0000701 W EP0000701 W EP 0000701W WO 0046295 A1 WO0046295 A1 WO 0046295A1
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weight
molding compositions
polyester molding
compositions according
acid
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PCT/EP2000/000701
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German (de)
English (en)
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Thomas Heitz
Martin Klatt
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Basf Aktiengesellschaft
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Priority to AU32777/00A priority Critical patent/AU3277700A/en
Publication of WO2000046295A1 publication Critical patent/WO2000046295A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/20—Carboxylic acid amides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/14—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms

Definitions

  • the invention relates to polyester molding compositions containing
  • thermoplastic polyester 10 to 98.9% by weight of a thermoplastic polyester
  • the invention further relates to the use of the molding compositions according to the invention for the production of moldings and the moldings obtainable here.
  • Borosiloxane polymers are known for example from DE-A 32 13 247 as cable sheathing material.
  • JP-A 70/21597 discloses borosiloxane polymers as a so-called “anti-peeling additive" for polyester fibers.
  • JP-A 62/006912 discloses borosiloxane polymers as flame retardants for polyester fibers.
  • fiber-reinforced polyester moldings come into consideration, which need to be improved with regard to the mechanical properties (in particular toughness).
  • the molding compositions according to the invention contain 10 to 98.9, preferably 10 to 94.45 and in particular 25 to 78.9% by weight of a thermoplastic polyester.
  • Polyesters based on aromatic dicarboxylic acids and an aliphatic or aromatic dihydroxy compound are generally used.
  • a first group of preferred polyesters are polyalkylene terephthalates with 2 to 10 carbon atoms in the alcohol part.
  • Such polyalkylene terephthalates are known per se and are described in the literature. They contain an aromatic ring in the main chain, which comes from the aromatic dicarboxylic acid.
  • the aromatic ring can also be substituted, e.g. by halogen such as chlorine and bromine or by -CC alkyl groups such as methyl, ethyl, i- or n-propyl and n-, i- or t-butyl groups.
  • polyalkylene terephthalates can be prepared in a manner known per se by reacting aromatic dicarboxylic acids, their esters or other ester-forming derivatives with aliphatic dihydroxy compounds.
  • Preferred dicarboxylic acids are 2,6-naphthalenedicarboxylic acid, terephthalic acid and isophthalic acid or mixtures thereof.
  • Up to 30 mol%, preferably not more than 10 mol%, of the aromatic dicarboxylic acids can be replaced by aliphatic or cycloaliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid, dodecanedioic acids and cyclohexanedicarboxylic acids.
  • aliphatic dihydroxy compounds are diols with 2 to 6 carbon atoms, in particular 1,2-ethanediol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,4-hexanediol, 1,4-cyclo - Hexanediol, 1, 4-cyclohexanedimethylanol and neopentyl glycol or mixtures thereof are preferred.
  • Polyalkylene terephthalates which are derived from alkanediols having 2 to 6 carbon atoms can be mentioned as particularly preferred polyesters (A).
  • polyesters A
  • polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate or mixtures thereof are preferred in particular.
  • PET and / or PBT which contain up to 1% by weight, preferably up to 0.75% by weight. Contain 1, 6-hexanediol and / or 2-methyl-l, 5-pentanediol as further monomer units.
  • the viscosity number of the polyesters (A) is generally in the range from 50 to 220, preferably from 80 to 160 (measured in a 0.5% by weight solution in a phenol / o-dichlorobenzene mixture (% by weight). 1: 1 at 25 ° C) according to ISO 1628.
  • polyesters whose carboxyl end group content is up to 100 meq / kg, preferably up to 50 meq / kg and in particular up to 40 meq / kg polyester.
  • Such polyesters can be produced, for example, by the process of DE-A 44 01 055.
  • the carboxyl end group content is usually determined by titration methods (e.g. potentiometry).
  • Particularly preferred molding compositions contain as component A) a mixture of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).
  • the proportion of polyethylene terephthalate in the mixture is preferably up to 50, in particular 10 to 20, 30% by weight, based on 100% by weight of A).
  • Such molding compositions according to the invention show very good flame retardant properties and better mechanical properties.
  • PET recyclates also called scrap PET
  • PBT polyalkylene terephthalates
  • Recyclates are generally understood to mean: 0
  • post industrial recyclate this is production waste from polycondensation or processing e.g. Sprues in injection molding processing, approach goods in injection molding processing or extrusion or edge sections of extruded sheets or foils.
  • Post consumer recyclate these are plastic items that are collected and processed by the end consumer after use.
  • the dominant item by far in terms of quantity is blow-molded PET bottles for mineral water, soft drinks and juices.
  • Both types of recyclate can either be in the form of regrind or in the form of granules.
  • the tube cyclates 5 are melted and granulated in an extruder after the separation and cleaning. This usually means the handling, the belt ability and dosing for further processing steps easier.
  • Recycled materials 5 both granulated and in the form of regrind, can be used, the maximum edge length being 6 mm, preferably less than 5 mm.
  • the residual moisture content after drying is preferably 0.01 to 0.7, in particular 0.2 to 0.6%.
  • Aromatic dicarboxylic acids which are suitable are the compounds already described for the polyalkylene terephthalates. Mixtures of 5 to 100 mol% isophthalic acid and 0 to 20 95 mol% terephthalic acid, in particular mixtures of approximately 80% terephthalic acid with 20% isophthalic acid to approximately equivalent mixtures of these two acids, are used.
  • the aromatic dihydroxy compounds preferably have the general formula
  • Z represents an alkylene or cycloalkylene group with up to 8 C atoms, an arylene group with up to 12 C atoms, a carbonyl group, a sulfonyl group, an oxygen or sulfur atom 5 or a chemical bond and in which the Has value 0 to 2.
  • the compounds can also carry C 1 -C 6 -alkyl or alkoxy groups and fluorine, chlorine or bromine as a substitute on the phenylene groups.
  • Dihydroxydiphenyl di- (hydroxyphenyl) alkane, di- (hydroxyphenyl) cycloalkane, 5 di- (hydroxyphenyl) sulf d, di- (hydroxyphenyl) ether, di- (hydroxyphenyl) ketone, di - (hydroxyphenyl) sulfoxide, ⁇ , ⁇ '-di (hydroxyphenyl) dialkylbenzene, di- (hydroxyphenyl) sulfone, di- (hydroxybenzoyl) benzene, resorcinol and hydroquinone, and also their ring-alkylated or ring-halogenated derivatives.
  • 2,2 -Di - (4'-hydroxyphenyl) ropane 2,2 -Di (3 ', 5 -dichlorodihydroxyphenyl) propane, 1,1-di- (4'-hydroxyphenyl) cyclohexane, 3,4'-dihydroxybenzophenone, 4 , 4 '-Dihydroxydiphenylsulfon and 2, 2 -Di (3', 5 '-dimethyl-4' -hydroxyphenyl) ropan
  • mixtures of polyalkylene terephthalates and fully aromatic polyesters can also be used. These generally contain 20 to 98% by weight of the polyalkylene terephthalate and 2 to 80% by weight of the fully aromatic polyester.
  • polyesters are also to be understood as meaning polycarbonates which are obtained by polymerizing aromatic dihydroxy compounds, in particular bis- (4-hydroxyphenyl) 2,2-propane (bisphenol A) or its derivatives, e.g. are available with phosgene.
  • bisphenol A bis- (4-hydroxyphenyl) 2,2-propane
  • Corresponding products are known per se and described in the literature and for the most part are also commercially available.
  • the amount of the polycarbonates is up to 90% by weight, preferably up to 50% by weight, based on 100% by weight of component (A).
  • polyester block copolymers such as copolyether esters can also be used.
  • Products of this type are known per se and are described in the literature, for example in US Pat. No. 3,651,014.
  • Corresponding products are also commercially available, for example Hytrel ® (DuPont).
  • the molding compositions according to the invention contain 0.1 to 30, preferably 0.5 to 20 and in particular 1 to 15% by weight of a borosiloxane polymer as component B).
  • Such polymers are generally obtainable by polycondensation at a temperature of 50 to 800 ° C.
  • R 1 is an alkyl, aryl, alkylaryl, OH, OCH, epoxy or vinyl radical,
  • n is an integer from 0 to 5,000, preferably 1 to 2,500, and
  • R 2 represents an alkyl, aryl or alkylaryl or OH radical.
  • the polycondensation of (1) with (2) can be carried out in the presence of a solvent and / or catalyst.
  • a solvent and / or catalyst for further details, reference is made to DE-A 32 13 247.
  • Suitable boron compounds (1) are borates of the alkali and alkaline earth metals such as KBs0 8 • 4H 2 0, NaB 4 0 7 • 10HO, CaB 2 0 4 , Mg 7 Cl 2 B 16 0 3 or where boron oxides such as borax (NaB 0s) (OH) 4 • 8H 2 0 and in particular B 2 0 3 are preferred.
  • Preferred radicals R 2 and R 1 are unbranched alkyl radicals having 1 to 4 carbon atoms, the methyl radical being particularly preferred. In the aromatic, those with 6 to 10 carbon atoms are preferred, the phenyl radical being particularly preferred.
  • Preferred compounds (2) are diphenylsiloxane, methylphenylsiloxane and dimethylsiloxane.
  • the polysiloxanes (2) can have functional end groups, for example hydroxyl, methoxy, epoxy or vinyl groups, the hydroxyl group being preferred. Mixtures of compounds (1) and / or (2) can of course also be used.
  • a mixture of borosiloxane polymers with different chain lengths and degrees of crosslinking is obtained by the reaction described above.
  • the borosiloxane polymers are usually soluble in organic solvents such as cresol, N-methyl-2-pyrrolidone, methyl ethyl ketone or tetrahydrofuran.
  • the molding compositions according to the invention contain 1 to 40, preferably 5 to 35 and in particular 20 to 30% by weight of a fibrous or particulate filler or mixtures thereof.
  • fibrous or particulate fillers e.g. Carbon fibers, glass fibers, glass spheres, amorphous silica, asbestos, calcium silicate, calcium metasilicate, magnesium carbonate, kaolin, chalk, powdered quartz, mica, barium sulfate and feldspar, which are mentioned in amounts of up to 50% by weight, in particular 1 up to 40 wt .-%, in particular 20 to 35 wt .-% are used.
  • Carbon fibers, aramid fibers and potassium titanate fibers may be mentioned as preferred fibrous fillers, with glass fibers being particularly preferred as E-glass. These can be used as rovings or cut glass in the commercially available forms.
  • the fibrous fillers can be surface-pretreated with a silane compound for better compatibility with the thermoplastic.
  • Suitable silane compounds are those of the general formula
  • n is an integer from 2 to 10, preferably 3 to 4 m is an integer from 1 to 5, preferably 1 to 2 k is an integer from 1 to 3, preferably 1
  • Preferred silane compounds are aminopropyltrimethoxysilane, aminobutyltrimethoxysilane, aminopropyltriethoxysilane, aminobutyltriethoxysilane and the corresponding silanes which contain a glycidyl group as substituent X.
  • the silane compounds are generally used in amounts of 0.05 to 5, preferably 0.5 to 1.5 and in particular 0.8 to 1% by weight (based on D) for surface coating.
  • acicular mineral fillers are understood to be mineral fillers with a pronounced acicular character.
  • An example is needle-shaped wollastonite.
  • the mineral preferably has an L / D (length diameter) ratio of 8: 1 to 35: 1, preferably 8: 1 to 11: 1.
  • the mineral filler can optionally have been pretreated with the abovementioned silane compounds; however, pretreatment is not essential.
  • Kaolin, calcined kaolin, wollastonite, talc and chalk may be mentioned as further fillers.
  • the molding compositions according to the invention can contain 0 to 5, preferably 0.05 to 3 and in particular 0.1 to 2% by weight of at least one ester or amide of saturated or unsaturated aliphatic carboxylic acids with 10 to 40, preferably 16 to 22 Contain carbon atoms with aliphatic saturated alcohols or amines with 2 to 40, preferably 2 to 6, carbon atoms.
  • the carboxylic acids can be 1- or 2-valent. Examples include pelargonic acid, palmitic acid, lauric acid, margaric acid, decadedioic acid, behenic acid and particularly preferably stearic acid, capric acid and montanic acid (mixture of fatty acids with 30 to 40 carbon atoms).
  • the aliphatic alcohols can be 1- to 4-valent. Examples of alcohols are n-butanol, n-octanol, "stearyl alcohol, ethylene glycol, propylene glycol, neopentyl glycol, pentaerythritol, and glycerol and pentaerythritol are preferred.
  • the aliphatic amines can be 1- to 3-valent. Examples include stearylamine, ethylenediamine, propylenediamine, hexa-ethylenediamine, di (6-aminohexyl) amine, with ethylenediamine and hexamethylenediamine being particularly preferred.
  • Preferred esters or amides are correspondingly glycerol distearate, glycerol tristearate, ethylenediamine distearate, glycerol monopalmitate, glycerol trilaura, glycerol monobehenate and pentaerythritol tetrastearate.
  • Mixtures of different esters or amides or esters with amides can also be used in combination, the mixing ratio being arbitrary.
  • the molding compositions according to the invention can contain 0 to 40, in particular up to 20% by weight of further additives and processing aids which are different from B) to D).
  • Customary additives E are, for example, in amounts of up to 40, preferably up to 30,% by weight of rubber-elastic polymers (often also referred to as impact modifiers, elastomers or rubbers).
  • Vinyl acetate, styrene, acrylonitrile and acrylic or methacrylic acid ester with 1 to 18 carbon atoms in the alcohol component Vinyl acetate, styrene, acrylonitrile and acrylic or methacrylic acid ester with 1 to 18 carbon atoms in the alcohol component.
  • EPM ethylene-propylene
  • EPDM ethylene-propylene-diene
  • diene monomers for EPDM rubbers are conjugated dienes such as isoprene and butadiene, non-conjugated dienes with 5 to 25 carbon atoms such as penta-1,4-diene, hexa-1,4-diene, hexa-l , 5-diene, 2, 5-dimethylhexa-l, 5-diene and octa-1, 4-diene, cyclic dienes such as cyclopentadiene, cyclohexadienes, cyclooctadienes and dicyclopentadiene, and alkenylnorbornenes such as 5-ethylidene-2-norbornene, 5-butylidene-2-norbornene, 2-methallyl-5-norbornene, 2-isopropenyl-5-norbornene and tricyclodienes such as 3-methyl-tricyclo (5.2.1.0.
  • conjugated dienes such as isoprene and butadiene
  • the diene content of the EPDM rubbers is preferably 0.5 to 50, in particular 1 to 8,% by weight, based on the total weight of the rubber.
  • EPM or EPDM rubbers can preferably also be grafted with reactive carboxylic acids or their derivatives.
  • reactive carboxylic acids or their derivatives e.g. Acrylic acid, methacrylic acid and their derivatives, e.g. Glycidyl (meth) acrylate, as well as maleic anhydride.
  • Another group of preferred rubbers are copolymers of ethylene with acrylic acid and / or methacrylic acid and / or the esters of these acids.
  • the rubbers can also contain dicarboxylic acids such as maleic acid and fumaric acid or derivatives of these acids, for example esters and anhydrides, and / or monomers containing epoxy groups.
  • dicarboxylic acid derivatives or monomers containing epoxy groups are preferably incorporated into the rubber by adding monomers of general formulas I or II or III or IV containing dicarboxylic acid or epoxy groups to the monomer mixture
  • R 1 to R 9 represent hydrogen or alkyl groups having 1 to 6 carbon atoms and m is an integer from 0 to 20, g is an integer from 0 to 10 and p is an integer from 0 to 5.
  • the radicals R 1 to R 9 are preferably hydrogen, where m is 25 0 or 1 and g is 1.
  • the corresponding compounds are maleic acid, fu aric acid, maleic anhydride, allyl glycidyl ether and vinyl glycidyl ether.
  • Preferred compounds of the formulas I, II and IV are maleic acid, maleic anhydride and epoxy group-containing esters of acrylic acid and / or methacrylic acid, such as glycidyl acrylate, glycidyl methacrylate and the esters with tertiary alcohols, such as t-butyl acrylate. Although the latter have no free carboxyl groups, their behavior is close to that of the free acids and 35 are therefore referred to as monomers with latent carboxyl groups.
  • the copolymers advantageously consist of 50 to 98% by weight of ethylene, 0.1 to 20% by weight of monomers containing epoxy groups and / 40 or monomers containing methacrylic acid and / or acid anhydride groups and the remaining amount of (meth) acrylic acid esters.
  • Copolymers of are particularly preferred
  • n-butyl acrylate 1 to 45, in particular 10 to 40% by weight of n-butyl acrylate and / or 2-ethylhexyl acrylate.
  • esters of acrylic and / or methacrylic acid are the methyl, ethyl, propyl and i- or t-butyl esters.
  • vinyl esters and vinyl ethers can also be used as comonomers.
  • the ethylene copolymers described above can be prepared by processes known per se, preferably by random copolymerization under high pressure and elevated temperature. Appropriate methods are generally known.
  • Preferred elastomers are also emulsion polymers, the production of which e.g. is described in Blackley in the monograph "Emulsion Polymerization".
  • the emulsifiers and catalysts that can be used are known per se.
  • homogeneous elastomers can be used, or they can be used with a shell structure.
  • the shell-like structure is determined by the order of addition of the individual monomers;
  • the morphology of the polymers is also influenced by this order of addition.
  • acrylates such as n-Butyl acrylate and 2-ethylhexyl acrylate, corresponding methacrylates, butadiene and isoprene and mixtures thereof.
  • monomers for the production of the rubber part of the elastomers acrylates such as n-Butyl acrylate and 2-ethylhexyl acrylate, corresponding methacrylates, butadiene and isoprene and mixtures thereof.
  • monomers can be combined with other monomers such as e.g. Styrene, acrylonitrile, vinyl ethers and other acrylates or methacrylates such as methyl methacrylate, methyl acrylate, ethyl acrylate and propyl acrylate can be copolymerized.
  • the soft or rubber phase (with a glass transition temperature of below 0 ° C) of the elastomers can be the core, the outer shell or a middle shell (in the case of elastomers with more than two layers). in the case of multi-layer elastomers, several shells can also consist of a rubber phase.
  • one or more hard components are involved in the construction of the elastomer, these are generally replaced by Polymerization of styrene, acrylonitrile, methacrylonitrile, ⁇ -methylstyrene, p-methylstyrene, acrylic acid esters and methacrylic esters such as methyl acrylate, ethyl acrylate and methyl methacrylate as the main monomers.
  • styrene acrylonitrile
  • methacrylonitrile ⁇ -methylstyrene
  • p-methylstyrene acrylic acid esters and methacrylic esters such as methyl acrylate, ethyl acrylate and methyl methacrylate
  • acrylic acid esters and methacrylic esters such as methyl acrylate, ethyl acrylate and methyl methacrylate as the main monomers.
  • further comonomers can also be used here.
  • emulsion polymers which have reactive groups on the surface.
  • groups are e.g. Epoxy, carboxyl, latent carboxyl, amino or amide groups, as well as functional groups, by using monomers of the general formula
  • RU is hydrogen, a C 1 -C 8 -alkyl group or an aryl group, in particular phenyl,
  • R 12 is hydrogen, a Cj . - to Cin-alkyl, a C 6 - to -C aryl group or -OR i3
  • R 13 is a C 3 - to C 6 -alkyl or C 6 - to C 2 aryl group, which can optionally be substituted with 0 or N-containing groups,
  • X is a chemical bond, a C ⁇ ⁇ to C ⁇ 0 alkylene or C 6 - C ⁇ _ arylene group or
  • Z is a C ⁇ to C ⁇ o-alkylene or C 6 - to Ci-aryl closely group.
  • the graft monomers described in EP-A 208 187 are also suitable for introducing reactive groups on the surface.
  • acrylamide, methacrylamide and substituted esters of acrylic acid or methacrylic acid such as (Nt-butylamino) ethyl methacrylate, (N, N-dimethylamino) ethyl acrylate, (N, N-dimethylamino) methyl acrylate and (N, N-diethylamino) called ethyl acrylate.
  • the particles of the rubber phase can also be crosslinked.
  • Monomers acting as crosslinkers are, for example, buta-1,3-diene, divinylbenzene, diallyl phthalate and dihydrodicyclopentadienyl acrylate, and the compounds described in EP-A 50 265.
  • So-called graft-linking monomers can also be used, i.e. Monomers with two or more polymerizable double bonds, which react at different rates during the polymerization.
  • Compounds are preferably used in which at least one reactive group polymerizes at about the same rate as the other monomers, while the other reactive group (or reactive groups) e.g. polymerizes much slower (polymerize).
  • the different polymerization rates result in a certain proportion of unsaturated double bonds in the rubber. If a further phase is subsequently grafted onto such a rubber, the double bonds present in the rubber react at least partially with the graft monomers to form chemical bonds, i.e. the grafted phase is at least partially linked to the graft base via chemical bonds.
  • graft-crosslinking monomers are monomers containing allyl groups, in particular allyl esters of ethylenically unsaturated carboxylic acids such as allyl acrylate, allyl methacrylate,
  • graft polymers with a core and at least one outer shell have the following structure:
  • graft polymers in particular ABS and / or ASA polymers in amounts of up to 40% by weight, are preferably used for impact modification of PBT, optionally in a mixture with up to
  • graft polymers with a multi-layer structure instead of graft polymers with a multi-layer structure, homogeneous, i.e. single-shell elastomers of buta-l, 3-diene, isoprene and n-butyl acrylate or their copolymers are used. These products can also be produced by using crosslinking monomers or monomers with reactive groups.
  • emulsion polymers examples include n-butyl acrylate / (meth) acrylic acid copolymers, n-butyl acrylate / glycidyl acrylate 5 or n-butyl acrylate / glycidyl methacrylate copolymers, graft polymers with an inner core of n-butyl acrylate or based on an butadiene and an outer shell aforementioned Copolymers and copolymers of ethylene with comonomers that provide reactive groups.
  • the elastomers described can also be made by other conventional methods, e.g. by suspension polymerization.
  • Silicone rubbers as described in DE-A 37 25 576, EP-A 235 690, DE-A 38 00 603 and EP-A 319 290, are also preferred.
  • thermoplastic molding compositions according to the invention can contain customary processing aids such as stabilizers, oxidation retardants, agents against heat decomposition and decomposition by ultraviolet light, lubricants and mold release agents, colorants such as dyes and pigments, nucleating agents, plasticizers, etc.
  • customary processing aids such as stabilizers, oxidation retardants, agents against heat decomposition and decomposition by ultraviolet light, lubricants and mold release agents, colorants such as dyes and pigments, nucleating agents, plasticizers, etc.
  • oxidation retarders and heat stabilizers are sterically hindered phenols and / or phosphites, hydroquinones, aromatic secondary amines such as diphenylamines, various substituted representatives of these groups and their mixtures in concentrations of up to 1% by weight, based on the weight of the thermoplastic molding compositions called.
  • UV stabilizers which are generally used in amounts of up to 2% by weight, based on the molding composition.
  • Inorganic pigments such as titanium dioxide, ultramarine blue, iron oxide and carbon black, organic pigments such as phthalocyanines, quinacridones, perylenes and dyes such as nigrosine and anthraquinones can also be added as colorants.
  • Sodium phenylphosphinate, aluminum oxide, silicon dioxide and preferably talc are used as nucleating agents.
  • Lubricants and mold release agents which are different from D) and are usually used in amounts of up to 1% by weight, are preferably long-chain fatty acids (eg stearic acid or behenic acid), their salts (eg Ca or Zn stearate) or Montan waxes (mixtures of straight-chain, saturated carboxylic acids with length of 28 to 32 carbon atoms) as well as low molecular weight polyethylene or polypropylene waxes.
  • long-chain fatty acids eg stearic acid or behenic acid
  • their salts eg Ca or Zn stearate
  • Montan waxes mixturetures of straight-chain, saturated carboxylic acids with length of 28 to 32 carbon atoms
  • plasticizers are dioctyl phthalate, dibenzyl phthalate, butyl benzyl phthalate, hydrocarbon oils, N- (n-butyl) benzenesulfonamide.
  • the molding compositions according to the invention can also contain 0 to 2% by weight of fluorine-containing ethylene polymers. These are polymers of ethylene with a fluorine content of 55 to 76% by weight, preferably 70 to 76% by weight.
  • PTFE polytetrafluoroethylene
  • tetrafluoroethylene-hexafluoropropylene copolymers or tetrafluoroethylene copolymers with smaller proportions (generally up to 50% by weight) of copolymerizable ethylenically unsaturated monomers.
  • PTFE polytetrafluoroethylene
  • tetrafluoroethylene-hexafluoropropylene copolymers or tetrafluoroethylene copolymers with smaller proportions (generally up to 50% by weight) of copolymerizable ethylenically unsaturated monomers.
  • fluorine-containing ethylene polymers are homogeneously distributed in the molding compounds and preferably have a particle size dso (number average) in the range from 0.05 to 10 ⁇ m, in particular from 0.1 to 5 ⁇ m. These small particle sizes can be achieved particularly preferably by using aqueous dispersions of fluorine-containing ethylene polymers and incorporating them into a polyester melt.
  • thermoplastic molding compositions according to the invention can be produced by processes known per se, in which the starting components are mixed in customary mixing devices such as screw extruders, Brabender mills or Banbury mills and then extruded. After the extrusion, the extrudate can be cooled and crushed. Individual components can also be premixed and the remaining starting materials added individually and / or likewise mixed. The mixing temperatures are usually 230 to 290 ° C.
  • thermoplastic molding compositions according to the invention are notable for good mechanical properties and good heat resistance. They are suitable for the production of fibers, foils and moldings, in particular for applications in the electrical and electronics sector. These applications are in particular lamp parts such as lamp holders and holders, plugs and power strips, coil formers, housings for capacitors or contactors as well as fuse switches, relay housings and reflectors.
  • Component C chopped glass fiber with a thickness of 10 ⁇ m (epoxy-silanized size).
  • a homogeneous melt of component A) with D) was produced on a twin-screw extruder at 250 to 260 ° C. and mixed with components B) (as solution) and C) and extruded into a water bath. After granulation and drying, test specimens were injected and tested on an injection molding machine.
  • the heat resistance HDT / A was measured according to ISO 75.
  • the puncture energy 50 was measured according to ISO 6603-2 and the impact strength a ⁇ according to ISO 179 leA.

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Abstract

Matières moulables à base de polyester, qui comprennent (A) de 10 à 98,9 % en poids d'un polyester thermoplastique, (B) de 0,1 à 30 % en poids d'un polymère borosiloxane, (C) de 1 à 40 % en poids d'une matière de charge fibreuse ou particulaire ou de leur mélange, (D) de 0 à 5 % en poids d'un ester ou d'un amide d'acides carboxyliques aliphatiques saturés ou insaturés ayant de 10 à 40 atomes de C avec des alcools ou amines aliphatiques ayant de 2 à 40 atomes de C et (E) de 0 à 40 % en poids d'autres adjuvants, la somme des pourcentages en poids des constituants (A) à (E) étant égale à 100.
PCT/EP2000/000701 1999-02-05 2000-01-29 Matiere moulable a base de polyester a resistance elevee aux chocs WO2000046295A1 (fr)

Priority Applications (1)

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AU32777/00A AU3277700A (en) 1999-02-05 2000-01-29 Shock-resistant polyester molding material

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DE19904813.4 1999-02-05
DE1999104813 DE19904813A1 (de) 1999-02-05 1999-02-05 Schlagzähe Polyesterformmassen

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EP2865705A1 (fr) * 2013-10-25 2015-04-29 3B-Fibreglass SPRL Procédé de production de matériaux composites renforcés par des fibres de verre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213247A1 (de) * 1981-04-13 1982-12-02 Showa Electric Wire & Cable Co., Ltd., Kawasaki, Kanagawa Polyborsiloxan-ueberzugsmasse und isolierter elektrischer leiter
JPS58132020A (ja) * 1982-01-29 1983-08-06 Nippon Ester Co Ltd ポリエステルの製造方法
GB2180857A (en) * 1985-07-19 1987-04-08 Showa Electric Wire & Cable Co Heat resistant prepreg and method for production thereof
EP0393616A2 (fr) * 1989-04-19 1990-10-24 Mitsubishi Rayon Co., Ltd. Composition thermoplastique de résine polyester

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3213247A1 (de) * 1981-04-13 1982-12-02 Showa Electric Wire & Cable Co., Ltd., Kawasaki, Kanagawa Polyborsiloxan-ueberzugsmasse und isolierter elektrischer leiter
GB2101147A (en) * 1981-04-13 1983-01-12 Showa Electric Wire & Cable Co Polyborosiloxane composition for insulation of electric conductors
JPS58132020A (ja) * 1982-01-29 1983-08-06 Nippon Ester Co Ltd ポリエステルの製造方法
GB2180857A (en) * 1985-07-19 1987-04-08 Showa Electric Wire & Cable Co Heat resistant prepreg and method for production thereof
EP0393616A2 (fr) * 1989-04-19 1990-10-24 Mitsubishi Rayon Co., Ltd. Composition thermoplastique de résine polyester

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 99, no. 26, 26 December 1983, Columbus, Ohio, US; abstract no. 213053, XP002140305 *
DATABASE WPI Section Ch Week 7030, Derwent World Patents Index; Class A23, AN 1970-53033R, XP002140295 *

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DE19904813A1 (de) 2000-08-10

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