DE19503470C2 - Polycarbonate molding compounds - Google Patents

Polycarbonate molding compounds

Info

Publication number
DE19503470C2
DE19503470C2 DE1995103470 DE19503470A DE19503470C2 DE 19503470 C2 DE19503470 C2 DE 19503470C2 DE 1995103470 DE1995103470 DE 1995103470 DE 19503470 A DE19503470 A DE 19503470A DE 19503470 C2 DE19503470 C2 DE 19503470C2
Authority
DE
Germany
Prior art keywords
weight
parts
molding compounds
polycarbonate
polycarbonate molding
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.)
Expired - Fee Related
Application number
DE1995103470
Other languages
German (de)
Other versions
DE19503470A1 (en
Inventor
Josef Buekers
Peter Bier
Horst Peters
Ulrich Grigo
Axel Sandquist
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.)
Covestro Deutschland AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to DE1995103470 priority Critical patent/DE19503470C2/en
Publication of DE19503470A1 publication Critical patent/DE19503470A1/en
Application granted granted Critical
Publication of DE19503470C2 publication Critical patent/DE19503470C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Landscapes

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

Description

Gegenstand der Erfindung sind gefüllte Polycarbonat-Formmassen aus
The invention relates to filled polycarbonate molding compositions

  • A) 70 bis 90 Gew.-Teilen eines Polycarbonates auf Basis von Dihydroxy­ diphenylalkanen, die zu 30 bis 60 Mol% der Formel I
    entsprechen,    A) 70 to 90 parts by weight of a polycarbonate based on dihydroxy diphenylalkanes, 30 to 60 mol% of formula I.
    correspond,
  • B) 10 bis 30 Gew.-Teilen eines handelsüblichen TiO2.B) 10 to 30 parts by weight of a commercially available TiO 2 .

Bevorzugte Formmassen enthalten 80 bis 95 Gew.-% A und 15 bis 20 Gew.-% B. Die Formmassen enthalten zusätzlich:
Preferred molding compositions contain 80 to 95% by weight of A and 15 to 20% by weight of B. The molding compositions additionally contain:

  • A) 0,5 bis 5,0 Gew.-Teile, bevorzugt 1,0 bis 2,0 Gew.-Teile, pro 100 Gew.- Teile B eines Siloxan-Stabilisators wie in EP 440 938 und in DE- OS 41 18 705 beschrieben.
    Propylglycidylether-substituiertes Polymethylsiloxan    A) 0.5 to 5.0 parts by weight, preferably 1.0 to 2.0 parts by weight, per 100 parts by weight B of a siloxane stabilizer as in EP 440 938 and in DE-OS 41 18 705.
    Propylglycidyl ether substituted polymethylsiloxane

Die Polycarbonate A sind bekannt und z. B. in der Europäischen Patent­ schrift 359 953 beschrieben. Als TiO2-Farbstoffe B sind bevorzugt nach dem Chlorid-Verfahren hergestellte, hydrophobierte, speziell nachbe­ handelte und für den Einsatz in Polycarbonat geeignete Produkte, z. B. der Handelsprodukte Kronos Cl 2230 (Kronos Titan).The polycarbonates A are known and z. B. described in the European patent 359 953. As TiO 2 dyes B are preferably made by the chloride process, hydrophobized, specially nachbe traded and suitable for use in polycarbonate products such. B. the commercial products Kronos Cl 2230 (Kronos Titan).

Die erfindungsgemäßen Formmassen zeichnen sich durch folgende Eigenschaften aus:
hohe Dauergebrauchstemperatur
verringerter therm. Ausdehnungskoeffizient
wenig veränderte Eigenschaften in der Thermoalterung
gute RecyclingfähigkeitThe molding compositions according to the invention are distinguished by the following properties:
high continuous use temperature
reduced coefficient of thermal expansion
little changed properties in thermal aging
good recyclability

Diese Eigenschaften befähigen diese Formmassen besonders zur Verwendung als Reflektormaterial wo hohe Wärmeformbeständigkeit, geringer Ausdehnungs­ koeffizient, einwandfreie Oberfläche und gutes Temperaturalterungsverhalten ge­ fordert sind.These properties make these molding compositions particularly suitable for use as Reflector material where high heat resistance, low expansion coefficient, flawless surface and good temperature aging behavior demands are.

Die Formmassen können in an sich bekannter Weise durch Compoundieren der Bestandteile A, B und gegebenenfalls C in einem Schneckenexdruder hergestellt werden.The molding compositions can be prepared in a manner known per se by compounding the Components A, B and optionally C are produced in a screw extruder become.

Die DE-A-28 53 882 (General Electric) beschreibt eine thermisch und oxidativ stabilisierte Polycarbonatzusammensetzung, die eine geringe Menge eines endständig blockierten Polyorganohydrogensiloxans enthält. Dabei ist als organischer Rest die Methylgruppe bevorzugt. Trotzdem war immer wieder eine mangelnde Farbstabilität und mangelnde Schlagzähigkeit zu beobachten. DE-A-28 53 882 (General Electric) describes a thermally and oxidatively stabilized Polycarbonate composition that blocked a small amount of one Contains polyorganohydrogensiloxane. The organic group is the methyl group prefers. Nevertheless, there was always a lack of color stability and lack To observe impact strength.  

BeispieleExamples

Verwendete Materialien:
Used material:

  • A) Aromatisches Polycarbonat aus 65 Mol-% Bisphenol A und 35 Mol-% 1,1-Bis-(4-hydroxyphenyl)-3,3,5-trimethyl-cyclohexan mit einer relativen Viskosität, gemessen in Methylenchlorid bei 25°C von 1,29 (0,5 Gew.-% Lösung).A) Aromatic polycarbonate composed of 65 mol% bisphenol A and 35 mol% 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethyl-cyclohexane with a relative Viscosity, measured in methylene chloride at 25 ° C of 1.29 (0.5% by weight Solution).
  • B) TiO2: Kronos Cl 2230 (Kronos-Titan).B) TiO 2 : Kronos Cl 2230 (Kronos-Titan).
  • C) Stabilisator: Baysilon OF EP 901 (Bayer AG).C) Stabilizer: Baysilon OF EP 901 (Bayer AG).

Zusammensetzung der Formmassen (Gew.-Teile):
Composition of the molding compounds (parts by weight):

Herstellung und Prüfung der Formmassen:Production and testing of molding compounds:

Die benötigten Bestandteile wurden auf einem Doppelwellenextruder Fabrikat Werner & Pfleiderer Typ ZSK 30 bzw. ZSK 83 bei 280°C bis 350°C compoun­ diert und zu Granulat aufgearbeitet. Anschließend wurden die Granulate bei 300°C bzw. 340°C zu Prüfkörpern spritzgegossen (Aggregat Arburg-Allrounder 320, Schließkraft 75 t, Schneckendurchmesser 25 mm) und folgendem Test unterzogen:The required components were manufactured on a twin-screw extruder Werner & Pfleiderer type ZSK 30 or ZSK 83 at 280 ° C to 350 ° C compoun dated and processed into granules. The granules were then at 300 ° C. or 340 ° C injection molded into test specimens (Arburg-Allrounder 320 unit, Clamping force 75 t, screw diameter 25 mm) and subjected to the following test:

Thermoalterung in einem Umlufttrockenschrank bei 150°C bis 2000 mit an­ schließender Prüfung des Gelbwertes nach DIN 6167 und der Schlagzähigkeit nach ISO 180/1K.Thermal aging in a convection oven at 150 ° C to 2000 with final check of the yellowness index according to DIN 6167 and the impact strength ISO 180 / 1K.

Ermittelte Prüfdaten nach 2000 h 150°C-Alterung Test data determined after aging at 150 ° C for 2000 h  

Die Beispiele zeigen eine deutliche Stabilisierung und hohes Eigenschaftsniveau gegenüber dem Vergleich.The examples show a clear stabilization and high property level compared to the comparison.

Zusätzlich besitzen diese Formmassen einen deutlich verringerten Ausdehnungs­ koeffizienten von 5,5 -10-5 -K-1 und einwandfreie Oberflächenqualität.In addition, these molding compounds have a significantly reduced coefficient of expansion of 5.5 -10 -5 -K -1 and perfect surface quality.

Claims (1)

1. Polycarbonat-Formmassen aus
  • A) 70 bis 90 Gew.-Teilen eines Polycarbonates auf Basis von Dihydroxydiphenylalkanen, die zu 30 bis 60 Mol% der Formel I
    entsprechen,
  • B) 10 bis 30 Gew.-Teilen eines handelsüblichen TiO2.
  • C) 0,5 bis 5,0 Gew.-Teile, pro 100 Gew.-Teile B eines Siloxan- Stabilisators der Formel II
1. Polycarbonate molding compounds
  • A) 70 to 90 parts by weight of a polycarbonate based on dihydroxydiphenylalkanes, 30 to 60 mol% of formula I.
    correspond,
  • B) 10 to 30 parts by weight of a commercially available TiO 2 .
  • C) 0.5 to 5.0 parts by weight, per 100 parts by weight B of a siloxane stabilizer of the formula II
DE1995103470 1995-02-03 1995-02-03 Polycarbonate molding compounds Expired - Fee Related DE19503470C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995103470 DE19503470C2 (en) 1995-02-03 1995-02-03 Polycarbonate molding compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995103470 DE19503470C2 (en) 1995-02-03 1995-02-03 Polycarbonate molding compounds

Publications (2)

Publication Number Publication Date
DE19503470A1 DE19503470A1 (en) 1996-08-08
DE19503470C2 true DE19503470C2 (en) 1999-09-09

Family

ID=7753057

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995103470 Expired - Fee Related DE19503470C2 (en) 1995-02-03 1995-02-03 Polycarbonate molding compounds

Country Status (1)

Country Link
DE (1) DE19503470C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9290618B2 (en) 2011-08-05 2016-03-22 Sabic Global Technologies B.V. Polycarbonate compositions having enhanced optical properties, methods of making and articles comprising the polycarbonate compositions
WO2013130610A1 (en) 2012-02-29 2013-09-06 Sabic Innovative Plastics Ip B.V. Polycarbonate compositions containing conversions material chemistry and having enhanced optical properties, methods of making and articles comprising the same
EP2834295B1 (en) * 2012-04-05 2019-01-09 SABIC Global Technologies B.V. High reflectance polycarbonate
EP2912107B1 (en) 2012-10-25 2018-03-28 SABIC Global Technologies B.V. Light emitting diode devices, method of manufacture, uses thereof
US10539715B2 (en) 2013-03-11 2020-01-21 Covestro Llc Compositions containing polycarbonate and infrared reflective additives

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2853882A1 (en) * 1977-12-28 1979-07-05 Gen Electric STABILIZED POLYCARBONATE COMPOSITION
US5132154A (en) * 1989-06-06 1992-07-21 Bayer Aktiengesellschaft Polycarbonate mixtures in optical applications
WO1993018089A1 (en) * 1992-03-02 1993-09-16 Eastman Chemical Company Multicomponent polyester/polycarbonate blends with improved impact strength and processability
DE4328656A1 (en) * 1993-08-26 1995-03-02 Bayer Ag Flame retardant, stress crack resistant polycarbonate ABS molding compounds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2853882A1 (en) * 1977-12-28 1979-07-05 Gen Electric STABILIZED POLYCARBONATE COMPOSITION
US5132154A (en) * 1989-06-06 1992-07-21 Bayer Aktiengesellschaft Polycarbonate mixtures in optical applications
WO1993018089A1 (en) * 1992-03-02 1993-09-16 Eastman Chemical Company Multicomponent polyester/polycarbonate blends with improved impact strength and processability
DE4328656A1 (en) * 1993-08-26 1995-03-02 Bayer Ag Flame retardant, stress crack resistant polycarbonate ABS molding compounds

Also Published As

Publication number Publication date
DE19503470A1 (en) 1996-08-08

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BAYER MATERIALSCIENCE AG, 51373 LEVERKUSEN, DE

8339 Ceased/non-payment of the annual fee