EP0895525A1 - Matieres de moulage thermoplastiques a base de polymeres vinylaromatiques a structure syndiotactique, de polyamides de faible viscosite et d'ethers de polyphenylene modifies avec des groupes polaires - Google Patents

Matieres de moulage thermoplastiques a base de polymeres vinylaromatiques a structure syndiotactique, de polyamides de faible viscosite et d'ethers de polyphenylene modifies avec des groupes polaires

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Publication number
EP0895525A1
EP0895525A1 EP97916431A EP97916431A EP0895525A1 EP 0895525 A1 EP0895525 A1 EP 0895525A1 EP 97916431 A EP97916431 A EP 97916431A EP 97916431 A EP97916431 A EP 97916431A EP 0895525 A1 EP0895525 A1 EP 0895525A1
Authority
EP
European Patent Office
Prior art keywords
weight
molding compositions
thermoplastic molding
component
compositions according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97916431A
Other languages
German (de)
English (en)
Inventor
Josef WÜNSCH
Martin Weber
Gunter Pipper
Alexander Glück
Wilfried Vogel
Thomas Heitz
Stefan Grutke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP0895525A1 publication Critical patent/EP0895525A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
    • C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
    • C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
    • C08L71/12—Polyphenylene oxides
    • C08L71/126—Polyphenylene oxides modified by chemical after-treatment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S525/905—Polyphenylene oxide

Definitions

  • the present invention relates to thermoplastic molding compositions containing
  • the present invention relates to the use of the thermoplastic molding compositions for the production of fibers, films and moldings and the fibers, films and moldings obtainable therefrom.
  • compositions consist of syndiotactic polystyrene (s-PS) and polyphenylene ethers (PPE).
  • s-PS syndiotactic polystyrene
  • PPE polyphenylene ethers
  • EP-A 546 497 describes a composition of s-PS, inorganic fillers and modified PPE. Here, however, the material is also brittle.
  • the object of the present invention was therefore to remedy the disadvantages mentioned and to provide thermoplastic molding compositions which have improved flowability, reduced water absorption, better dimensional stability and improved resistance to hydrolysis.
  • thermoplastic molding compositions defined at the outset were found. Furthermore, the use of the thermoplastic molding compositions for the production of fibers, films and moldings and the fibers, films and moldings obtainable therefrom were found.
  • thermoplastic molding compositions according to the invention contain, as component A), 5 to 97.9% by weight, preferably 15 to 89.8% by weight, in particular 30 to 79.5% by weight, of a vinylaromatic polymer with a syndiotactic structure.
  • the term "with syndiotactic structure” means here that the polymers are essentially syndiotactic, ie the syndiotactic fraction determined according to 13 C-NMR is greater than 50%, preferably greater than 60%.
  • Component A) is preferably composed of compounds of the general formula I.
  • R 1 is hydrogen or C 1 -C 4 -alkyl
  • R 2 to R 6 independently of one another are hydrogen, Ci * to Ci 2 -alkyl r C. 6 - to Ci ⁇ -aryl, halogen or where two adjacent radicals together represent cyclic groups having 4 to 15 C atoms.
  • Vinylaromatic compounds of the formula I are preferably used in which
  • R 1 means hydrogen
  • R 2 to R 6 are hydrogen, Ci to C 4 alkyl, chlorine, phenyl,
  • Examples of such preferred compounds are: Styrene, p-methylstyrene, p-chlorostyrene, 2,4-dimethylstyrene, m, p-divinylbenzene, 4-vinylbiphenyl, vinylnaphthalene or vinyl anthracene.
  • Particularly preferred vinyl aromatic compounds are styrene, 10 p-methylstyrene and m, p-divinylbenzene.
  • Mixtures of various vinylaromatic polymers with a syndiotactic structure can also be used as component A), but preferably only one vinylaromatic polymer 15 is used, in particular s-PS.
  • Vinyl aromatic polymers with a syndiotactic structure and processes for their preparation are known per se and are described, for example, in EP-A 535 582.
  • the preferred procedure is to react compounds of the general formula I in the presence of a metallocene complex and a cocatalyst.
  • a metallocene complex and a cocatalyst.
  • pentamethylcyclopentadienyltitanium trichloride pentamethylcyclopentadienyltitanium trimethyl and pentamethylcyclopenta-
  • the vinyl aromatic polymers with a syndiotactic structure generally have a molecular weight M w (weight average) of 5,000 to 10,000,000, in particular 10,000 to 2,000,000.
  • M w weight average
  • M n number average
  • the thermoplastic molding compositions contain 2 to 90% by weight, preferably 10 to 80% by weight, in particular 20 to 35 65% by weight, of a low-viscosity polyamide with a viscosity number VZ in the range from 50 to 150 ml / g, preferably 60 to 150 ml / g, in particular 70 to 150 ml / g.
  • the viscosity number VZ is 0.5 wt. -% solution in 96% 0 sulfuric acid at 25 ° C determined.
  • Polyamides are so-called polycondensates, ie polymers which are produced by condensation from monomers with elimination of low molecular weight compounds. 5 Such methods are known to the person skilled in the art and have been described many times in the literature, so that detailed information is unnecessary.
  • the molecular weight (and thus the viscosity) can be controlled in various ways in such production processes.
  • molecular weight regulators are generally monofunctional compounds which bring the polycondensation reaction to an end by virtue of the fact that after their incorporation there is no longer any functional group at the chain end which is amenable to further condensation.
  • molecular weight regulators are, for example, monocarboxylic acids or monoalcohols or monoamines, which are usually used in the production of polyamides.
  • the possibility of regulating the molecular weight in the case of polycondensation should also be mentioned by controlling the molar ratio of the starting monomers.
  • the maximum molecular weight to be achieved in a polycondensation depends on the molar ratio of the groups which react with one another in the condensation with elimination of low molecular weight compounds.
  • EP-A 129 195 and EP-A 129 196 are particularly advantageous for the production of such polyamides.
  • Preferred polyamides are poly- ⁇ -caprolactam (polyamide 6), poly-hexamethylene adipic acid amide (polyamide 6,6), their copolymers and partly aromatic copolyamides based on terephthalic acid, optionally isophthalic acid, adipic acid, hexamethylene diamine and ⁇ -caprolactam, like you are described in EP-A 299 444.
  • Polyamides with an approximately equimolar ratio of the respective two end groups are preferred.
  • thermoplastic molding compositions according to the invention contain 0.1 to 50% by weight, preferably 0.2 to 40% by weight, in particular 0.5 to 20% by weight, of a polyphenylene ether modified with polar groups.
  • polyphenylene ethers modified with polar groups and processes for their preparation are known per se and are described, for example, in DE-A 41 29 499.
  • Polyphenylene ethers which are modified with polar groups and are composed of are preferably used as component C)
  • c 3 0.05 to 5% by weight of at least one compound which contains at least one double or triple bond and at least one functional group selected from the group of carboxylic acids, carboxylic esters, carboxylic anhydrides, carboxamides, epoxides, oxazolines or urethanes .
  • polyphenylene ethers ci) examples are
  • Polyphenylene ethers are preferably used in which the
  • Substituents are alkyl radicals with 1 to 4 carbon atoms, such as
  • Poly (2-ethyl-6-propyl-1,4-phenylene) ether examples of preferred vinylaromatic polymers c 2 ) can be found in the monograph by Olabisi, pp. 224 to 230 and 245. N for representative be mentioned here vinylaromatic polymers of styrene, chlorostyrene, ⁇ -methylstyrene and p-methylstyrene; In minor proportions (preferably not more than 20%, in particular not more than 8% by weight), comonomers such as (meth) acrylonitrile or (meth) acrylic acid esters can also be involved in the structure. Particularly preferred vinylaromatic polymers are polystyrene and impact modified polystyrene It is understood that mixtures of these polymers can also be used
  • Production is preferably carried out by the method described in EP-A 302 485.
  • Suitable modifiers c 3 are, for example, maleic acid, methyl maleic acid, itaconic acid, tetrahydrophthalic acid, their anhydrides and imides, fumaric acid, the mono- and diesters of these acids, for example Ci- and C 2 -C 8 -alkanols, the mono- or diamides thereof Acids such as N-phenyl maleimide, maleic hydrazide. N-vinylpyrrolidone and (meth) acryloylcaprolactam may also be mentioned, for example.
  • modifiers comprises, for example, the acid chloride of trimellitic anhydride, benzene-1,2-dicarbonic acid anhydride-4-carboxylic acid acetic anhydride, pyromellitic acid dianhydride, chloroethanoylsuccinaldehyde, chloroformylsuccinic aldehyde, citric acid and hydroxysuccinic acid.
  • Particularly preferred polyphenylene ethers C) modified with polar groups in the molding compositions according to the invention are obtained by modification with maleic acid, maleic anhydride or fumaric acid.
  • Such polyphenylene ethers preferably have a molecular weight (weight average M w ) in the range from 10,000 to 80,000, preferably from 20,000 to 60,000.
  • thermoplastic molding compositions according to the invention can contain 0 to 50% by weight, preferably 0 to 15% by weight, in particular 0 to 12% by weight, of additives or processing aids or mixtures thereof.
  • nucleating agents such as salts of carboxylic, organic sulfonic or phosphoric acids, preferably sodium benzoate, aluminum tris (p-tert-butyl benzoate), aluminum trisbenzoate, aluminum tris (p-carboxymethylbenzoate) and aluminum triscaproat;
  • Antioxidants such as phenolic antioxidants, phosphites or phosphonites, especially trisnornylphenyl phosphite; Stabilizers such as sterically hindered phenols and hydroquinones.
  • Lubricants and mold release agents, dyes, pigments and plasticizers can also be used.
  • thermoplastic molding compositions according to the invention can contain 0 to 20% by weight, preferably 0 to 18% by weight, in particular 0 to 15% by weight, of a flame retardant.
  • Organophosphorus compounds such as phosphates or phosphine oxides, can be used as flame retardants.
  • phosphine oxides are triphenylphosphine oxide, tritolylphosphine oxide, trisnonylphenylphosphine oxide, tricyclohexylphosphine oxide, tris (n-butyl) phosphine oxide, tris (n-hexyl) phosphine oxide, tris (n-octyl) phosphine oxide, tris (cyanoethyl) ) -phosphine oxide, benzylbis (cyclohexyl) -phosphine oxide, benzylbisphenylphosphine oxide, phenylbis (n-hexyl) -phosphine oxide. Triphenylphosphine oxide, tricyclohexylphosphine oxide, tris (n-octyl) phosphine oxide or tris (cyanoethyl) phosphine oxide are particularly preferably used.
  • Particularly suitable phosphates are alkyl and aryl-substituted phosphates.
  • Examples are phenylbisdodecylphosphate, phenylbisneopentylphosphate, phenylethyl hydrogen phosphate, phenyl bis (3,5,5-trimethylhexyl phosphate), ethyl diphenyl phosphate, bis (2-ethylhexyl) p-tolyl phosphate, tritolyl phosphate, trixylyl phosphate, trixylyl phosphate -ethylhexyl) phenyl phosphate, tris (nonylphenyl) phosphate, bis (dodecyl) p- (tolyl) phosphate, tricresyl phosphate, triphenyl phosphate, di-butylphenyl phosphate, p-tolyl-bis- (2, 5,5-trimethylhexy
  • Phosphorus compounds in which each R is an aryl radical are particularly suitable. Triphenyl phosphate, trixylyl phosphate and trimesityl phosphate are particularly suitable. Cyclic phosphates can also be used. Diphenylpentaerythritol diphosphate is particularly suitable. Resorcinol diphosphate is also preferred.
  • Mixtures of different phosphorus compounds can also be used.
  • thermoplastic molding compositions according to the invention can contain 0 to 50% by weight, preferably 0 to 30% by weight, in particular 0 to 20% by weight, of rubber-elastic polymers.
  • rubber-elastic polymers and processes for their preparation are known per se and are described, for example, in DE-A 41 29 499.
  • Graft rubbers with a crosslinked, elastomeric core and a graft cover made of polystyrene, EP and EPDM rubbers, block copolymers and thermoplastic polyester elastomers are only examples here.
  • a polyoctylene the name Vestenamer ® (Hüls AG), and a variety of suitable block copolymers with at least one vinylaromatic and an elastomeric block.
  • suitable block copolymers with at least one vinylaromatic and an elastomeric block.
  • Examples include the Cariflex ® TR types (Shell), the Kraton ® G types (Shell), the Finaprene ® types (Fina) and the Europrene ® SOL types (Enichem).
  • Block copolymers are preferably used.
  • thermoplastic molding compositions according to the invention can contain 0 to 50% by weight, preferably 0 to 40% by weight, in particular 0 to 35% by weight, of fibrous or particulate fillers or mixtures thereof.
  • Glass fibers can be equipped with a size and an adhesion promoter. These glass fibers can be incorporated both in the form of short glass fibers and in the form of endless strands (rovings). Preferred glass fibers contain an aminosilane size.
  • Amorphous silica, magnesium carbonate, powdered quartz, mica, talc, feldspar or calcium silicates can also be used.
  • the sum of the% by weight of the components used is always 100.
  • thermoplastic molding compositions according to the invention can be obtained by mixing the individual components at temperatures from 270 to 350 ° C. in customary mixing devices, such as kneaders, Banbury mixers and single-screw extruders, but preferably using a twin-screw extruder.
  • customary mixing devices such as kneaders, Banbury mixers and single-screw extruders, but preferably using a twin-screw extruder.
  • intensive mixing is necessary.
  • the mixing order of the components can be varied, so two or optionally three components can be premixed all components can also be mixed together.
  • thermoplastic molding compositions according to the invention are notable for improved flowability, reduced water absorption and thus improved resistance to hydrolysis and better dimensional stability. They are suitable for the production of fibers, films or moldings.
  • the polymer obtained was washed with methanol and dried at 50 ° C. in vacuo.
  • the molecular weight distribution was determined by high-temperature GPC (drop-mea- sion chromatography) with 1, 2, 4-trichlorobenzene as solvent at 135 ° C. The calibration was carried out using narrowly distributed polystyrene standards.
  • the molecular weight M w was determined by GPC in 1,2,4-trichlorobenzene as solvent at 120 ° C.
  • PA 66 polyhexamethylene adipamide with a viscosity number VZ of 150 ml / g
  • VZ viscosity number
  • Viscosity number VZ of 75 ml / g (Ultramid ® A15) from BA S F Aktiengesellschaft).
  • the viscosity numbers VZ of components B1), B2) and B3) were in each case 0.5. -% solution in 96% sulfuric acid at 25 ° C determined.
  • a modified polyphenylene ether produced at 300 ° C in a twin-screw extruder by reacting
  • the melt was degassed, extruded, passed through a water bath and granulated.
  • Components A), B) and C) were mixed in a twin-screw extruder (ZSK 30 from Werner & Pfleiderer) at a temperature of 285 ° C., discharged as a strand, cooled in a water bath and granulated.
  • ZSK 30 from Werner & Pfleiderer
  • the dried granules were then turned into round disks (thickness 2 mm, diameter 60 mm), flat bars (127 mm x 12.7 mm x 1.6 mm) and standard small bars (50 mm x 6 mm x 4 mm) at 290 ° C. processed and examined.
  • composition of the molding compositions and their properties can be found in the table below.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne des matières de moulage thermoplastiques contenant A) entre 5 et 97,9 % en poids d'un polymère vinylaromatique à structure syndiotactique, B) entre 2 et 90 % en poids d'un polyamide de faible viscosité dont l'indice de viscosité se situe entre 50 et 150 ml/g et C) entre 0,1 et 50 % en poids d'un éther de polyéthylène modifié avec des groupes polaires.
EP97916431A 1996-04-23 1997-04-03 Matieres de moulage thermoplastiques a base de polymeres vinylaromatiques a structure syndiotactique, de polyamides de faible viscosite et d'ethers de polyphenylene modifies avec des groupes polaires Withdrawn EP0895525A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19616075 1996-04-23
DE19616075A DE19616075A1 (de) 1996-04-23 1996-04-23 Thermoplastische Formmassen auf der Basis von vinylaromatischen Polymeren mit syndiotaktischer Struktur, niederviskosen Polyamiden und mit polaren Gruppen modifizierten Polyphenylenethern
PCT/EP1997/001671 WO1997040097A1 (fr) 1996-04-23 1997-04-03 Matieres de moulage thermoplastiques a base de polymeres vinylaromatiques a structure syndiotactique, de polyamides de faible viscosite et d'ethers de polyphenylene modifies avec des groupes polaires

Publications (1)

Publication Number Publication Date
EP0895525A1 true EP0895525A1 (fr) 1999-02-10

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Family Applications (1)

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EP97916431A Withdrawn EP0895525A1 (fr) 1996-04-23 1997-04-03 Matieres de moulage thermoplastiques a base de polymeres vinylaromatiques a structure syndiotactique, de polyamides de faible viscosite et d'ethers de polyphenylene modifies avec des groupes polaires

Country Status (6)

Country Link
US (1) US6093771A (fr)
EP (1) EP0895525A1 (fr)
JP (1) JP2000508697A (fr)
CN (1) CN1216560A (fr)
DE (1) DE19616075A1 (fr)
WO (1) WO1997040097A1 (fr)

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US6894102B2 (en) * 2002-05-20 2005-05-17 General Electric Syndiotactic polystyrene blends
EP2031004A1 (fr) * 2007-09-03 2009-03-04 Cytec Surface Specialties Austria GmbH Résines hybrides en polyester
JP5620815B2 (ja) * 2008-04-15 2014-11-05 電気化学工業株式会社 熱可塑性樹脂組成物
WO2010074417A2 (fr) * 2008-12-24 2010-07-01 제일모직 주식회사 Composition de résine alliée à base de nylon et réflecteur pour del (diode électroluminescente) utilisant cette composition
US8450412B2 (en) * 2009-12-22 2013-05-28 Sabic Innovative Plastics Ip B.V. Flame retardant polyamide composition, method, and article
US20110152420A1 (en) * 2009-12-22 2011-06-23 Mark Elkovitch Poly(arylene ether)/polyamide compositions, methods, and articles
US8669332B2 (en) 2011-06-27 2014-03-11 Sabic Innovative Plastics Ip B.V. Poly(arylene ether)-polysiloxane composition and method
US9090999B2 (en) 2011-09-28 2015-07-28 Sabic Global Technologies B.V. Polyamide/polyphenylene ether fibers and fiber-forming method
US8722837B2 (en) 2012-01-31 2014-05-13 Sabic Innovative Plastics Ip B.V. Poly(phenylene ether)-polysiloxane composition and method

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Also Published As

Publication number Publication date
CN1216560A (zh) 1999-05-12
JP2000508697A (ja) 2000-07-11
DE19616075A1 (de) 1997-10-30
WO1997040097A1 (fr) 1997-10-30
US6093771A (en) 2000-07-25

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