EP0000186A1 - Mélanges de polycarbonates thermoplastiques, leur procédé de préparation et leur utilisation pour la fabrication d'objets moulés - Google Patents

Mélanges de polycarbonates thermoplastiques, leur procédé de préparation et leur utilisation pour la fabrication d'objets moulés Download PDF

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Publication number
EP0000186A1
EP0000186A1 EP78100224A EP78100224A EP0000186A1 EP 0000186 A1 EP0000186 A1 EP 0000186A1 EP 78100224 A EP78100224 A EP 78100224A EP 78100224 A EP78100224 A EP 78100224A EP 0000186 A1 EP0000186 A1 EP 0000186A1
Authority
EP
European Patent Office
Prior art keywords
component
polycarbonate
weight
mixtures according
preparation
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.)
Granted
Application number
EP78100224A
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German (de)
English (en)
Other versions
EP0000186B1 (fr
Inventor
Rudolf Dr. Binsack
Eckart Dr. Reese
Erhard Dr. Tresper
Joachim Ing. Grad. Wank
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Bayer AG
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Bayer AG
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Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of EP0000186A1 publication Critical patent/EP0000186A1/fr
Application granted granted Critical
Publication of EP0000186B1 publication Critical patent/EP0000186B1/fr
Expired 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
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31507—Of polycarbonate

Definitions

  • the present invention relates to mixtures of 60% by weight to 5% by weight of aromatic polycarbonates with Mw between 60,000 and 120,000 (component A) and 40% by weight to 95% by weight of aromatic polycarbonates with Mw between 28,000 and 40,000 (component B) and processes for their preparation and their use for the production of moldings.
  • the melt which can be produced from the mixtures according to the invention has a high level of stability, the follies obtainable therefrom have a high resistance to stress corrosion cracking.
  • a polycarbonate component of the polycarbonate mixtures is a halogen-containing polycarbonate.
  • a polycarbonate component of the polycarbonate mixtures is a polycarbonate made from tetramethylbisphenols.
  • polycarbonate mixtures are produced with improved flow behavior during extrusion and injection molding.
  • the polycarbonate components are characterized by their reduced viscosity.
  • the high molecular weight polycarbonate component has a reduced viscosity of at least 0.6 dl / g
  • the low molecular weight polycarbonate component has a reduced viscosity of not more than 0.5 dl / g.
  • the difference in the reduced viscosities of the polycarbonate components should not be less than 0.2 dl / g and the reduced viscosity of the mixtures should be between 0.4 and 0.8 dl / g.
  • the polycarbonates from bisphenol A which are usually suitable for injection molding and extrusion, tend to stress corrosion cracking in the presence of certain organic liquids which do not dissolve polycarbonates, and in the presence of unsaturated compounds, for example styrene solutions of unsaturated polyesters. Since increasing the molecular weight Mw of the polycarbonates to over 70,000 eliminates the susceptibility to stress cracks, but does not solve the problem, since such polycarbonates with Mw over 70,000 can no longer be processed into films on extruders, the modification of polycarbonates by special branching according to DT -OS 2 254 917 (Le A 14 719) or US Pat. No. 3,931 108 invented as a way of producing stress-crack-resistant polycarbonate extrusion films.
  • Aromatic polycarbonates in the sense of the present invention are those from halogen-free diphenols and optionally halogen-free chain terminators.
  • Aromatic polycarbonates for the purposes of the invention are, in particular, homopolycarbonates composed of bis-2- (4-hydroxyphenyl) propane (bisphenol-A) and copolycarbonates composed of at least 30 mol%, preferably at least 60 mol% and in particular at least 80 mol% Bisphenol A and up to 70 mol%, preferably up to 40 mol% and in particular up to 20 mol% from other halogen-free diphenols.
  • bisphenol-A bis-2- (4-hydroxyphenyl) propane
  • copolycarbonates composed of at least 30 mol%, preferably at least 60 mol% and in particular at least 80 mol% Bisphenol A and up to 70 mol%, preferably up to 40 mol% and in particular up to 20 mol% from other halogen-free diphenols.
  • the molar percentages each refer to the total molar amount of condensed diphenols).
  • bis- (hydroxy-aryl) -C 1 -C 8 -alkanes other than bisphenol A and bis- (hydroxyaryl) -C 5 -C 6 -cycloalkanes are suitable, in particular bis- (4-hydroxyphenyl) -C 1 -C 8 alkanes and bis (4-hydroxyphenyl) -C 5 -C 6 cycloalkanes.
  • halogen-free diphenols are bis (4-hydroxyphenyl) methane (bisphenol F), 2,4-bis (4-hydroxyphenyl) butane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 2,2-bis (3 -methyl-4-hydroxyphenyl) propane, Bis (3,5-dimethyl-4-hydroxyphenyl) methane 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) propane 2,4-bis (3,5-dimethyl-4-hydroxyphenyl) - 2-methylbutane and 1,1-bis (3,5-dimethyl-4-hydroxyphenyl) cyclohexane are suitable.
  • Copolycarbonates preferred according to the invention contain bisphenol A and 1,1-bis (4-hydroxyphenyl) cyclohexane (bisphenol Z).
  • the polycarbonate mixtures according to the invention can be mixtures of homopolycarbonates and / or copolycarbonates, the polycarbonate component A not only differing from the polycarbonate component B by the higher molecular weight, but also by a different molecular composition.
  • Polycarbonate component B is understood to mean aromatic polycarbonates with molecular weights (weight average Mw, for example measured by the light scattering method) of 28,000 to 40,000, preferably from 29,000 to 39,000, in particular from 30,000 to 35,000.
  • Polycarbonate component A is to be understood as meaning aromatic polycarbonates with molecular weights (weight average Mw, for example measured by the light scattering method) from 60,000 to 120,000, preferably from 65,000 to 110,000, in particular from 70,000 to 95,000.
  • the polycarbonate mixtures according to the invention consist of 60% by weight to 5% by weight, preferably 50% by weight to 15% by weight, and in particular 40% by weight to 20% by weight of polycarbonate component A and 40% by weight. % to 95% by weight, preferably 50% by weight to 85% by weight and in particular 60% by weight to 80% by weight of polycarbonate component B, based in each case on the sums of polycarbonate components A + B.
  • Preferred mixing processes are processes 2 to 4, and mixing process 4 is particularly preferred.
  • Suitable apparatuses for the production of the polycarbonate mixtures according to the invention are rollers, kneading and screw machines.
  • Preferred apparatus are screw machines, in particular twin-screw machines.
  • Suitable solvents for the abovementioned mixing processes are all solvents known for polycarbonates, preferably methylene chloride and chlorobenzene.
  • the polycarbonate mixtures obtainable according to the invention can be shaped into extrusion moldings or injection molded articles on known processing machines by known methods. Special areas of application are containers, pipes, plates and foils.
  • Additives of the usual type can be added to the polycarbonate mixtures according to the invention before, during or after the mixing of the polycarbonate components.
  • dyes, pigments, mold release agents, stabilizers against the effects of moisture, heat and UV lubricants
  • fillers such as glass powder, quartz products, graphite, molybdenum sulfide, metal powder, powder of high-melting plastics, for example polytetrafluoroethylene powder, natural fibers, such as Cotton, sisal and asbestos, as well as glass fibers of various types, metal threads and fibers which are stable and do not noticeably damage the polycarbonates while they are in the melt of the polycarbonates.
  • a polycarbonate with an M w of 30,000 (component B) was metered into the filling supports on a twin-screw screw with metering and degassing dome.
  • a polycarbonate with an M w of 70,000 was metered into the metering dome of the 2-shaft screw via a second metering scale to the polycarbonate (component B) which had already melted at this point.
  • the dosing scales were set so that the mixture of the polycarbonates consists of 70% by weight of component B and 30% by weight of component A.
  • the homogenized melt of the mixture was pressed out through a slot die and drawn off to a film about 40 ⁇ m thick using a chill-roll system.
  • the films show the following properties in comparison to those which were only produced from component B by the extrusion process:
  • a mixture according to the invention which was produced in accordance with Example 1, was extruded as a strand and was granulated, was processed in a bottle blowing system to give bottles with a content of 11 with a wall thickness of 2 mm.
  • the bottle produced from the mixture according to the invention has the following properties compared to the bottle made of 100% component B in the cleaning or sterilization test:
EP78100224A 1977-07-01 1978-06-23 Mélanges de polycarbonates thermoplastiques, leur procédé de préparation et leur utilisation pour la fabrication d'objets moulés Expired EP0000186B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2729763 1977-07-01
DE19772729763 DE2729763A1 (de) 1977-07-01 1977-07-01 Thermoplastisch verarbeitbare polycarbonatmischungen

Publications (2)

Publication Number Publication Date
EP0000186A1 true EP0000186A1 (fr) 1979-01-10
EP0000186B1 EP0000186B1 (fr) 1980-06-25

Family

ID=6012914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100224A Expired EP0000186B1 (fr) 1977-07-01 1978-06-23 Mélanges de polycarbonates thermoplastiques, leur procédé de préparation et leur utilisation pour la fabrication d'objets moulés

Country Status (5)

Country Link
US (1) US4186154A (fr)
EP (1) EP0000186B1 (fr)
JP (1) JPS5414463A (fr)
DE (2) DE2729763A1 (fr)
IT (1) IT1105051B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364796A2 (fr) * 1988-10-15 1990-04-25 Bayer Ag Masses de mélanges de polycarbonates à mouler ayant une solubilité dispersée plus élevée
EP0374816A2 (fr) * 1988-12-20 1990-06-27 The Dow Chemical Company Procédé de dispersion d'additifs de résistance à l'inflammation dans des polycarbonates
EP0390064A2 (fr) * 1989-03-27 1990-10-03 Teijin Chemicals, Ltd. Compositions de résine de polycarbonate ignifuge
EP0498406A2 (fr) * 1991-02-05 1992-08-12 Teijin Chemicals, Ltd. Composition de résine de polycarbonate
EP0570797A1 (fr) * 1992-05-21 1993-11-24 Bayer Ag Masses à mouler de polycarbonate et d'AB
EP0626411A1 (fr) * 1993-05-28 1994-11-30 General Electric Company Procédé et appareil pour augmenter l'uniformité de viscosité dans la préparation de polycarbonates
WO1999007778A1 (fr) * 1997-08-11 1999-02-18 Bayer Aktiengesellschaft Matieres moulables en polycarbonate-abs renforcees et resistantes a la flamme

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645945A (en) * 1979-09-20 1981-04-25 Mitsubishi Chem Ind Ltd Polycarbonate composition
JPS58138754A (ja) * 1982-02-10 1983-08-17 Idemitsu Kosan Co Ltd ポリカ−ボネ−ト組成物の製造法
JPS6023444A (ja) * 1983-07-18 1985-02-06 Idemitsu Petrochem Co Ltd 射出圧縮成形用ポリカ−ボネ−ト樹脂組成物
JPS60203666A (ja) * 1984-03-28 1985-10-15 Hitachi Ltd ポリカ−ボネ−ト組成物
JPS60243146A (ja) * 1984-05-17 1985-12-03 Teijin Chem Ltd ポリカ−ボネ−ト組成物
JPH0621227B2 (ja) * 1986-08-11 1994-03-23 日本合成ゴム株式会社 ポリカ−ボネ−ト樹脂組成物
US4970041A (en) * 1987-10-13 1990-11-13 Mobay Corporation Coextruded structures
US5162459A (en) * 1990-09-07 1992-11-10 General Electric Company Solvent resistant polycarbonate compositions
US5153276A (en) * 1990-09-07 1992-10-06 General Electric Company Solvent resistant polycarbonate blends
US5162458A (en) * 1990-09-07 1992-11-10 General Electric Company Solvent resistant linear polycarbonate compositions
DE19734666A1 (de) * 1997-08-11 1999-02-18 Bayer Ag Flammwidrige Polycarbonat-ABS-Formmassen
DE19836800A1 (de) * 1998-08-14 2000-02-17 Roehm Gmbh Optisch isotrope Polycarbonat-Folien sowie Verfahren zu deren Herstellung
US8663542B2 (en) 2009-07-09 2014-03-04 Daicel-Evonik Ltd. Thermoplastic resin composition and molded product thereof
WO2016132256A1 (fr) * 2015-02-17 2016-08-25 Sabic Global Technologies B.V. Procédé de désactivation d'un polycarbonate à l'état fondu
WO2018122720A1 (fr) * 2016-12-30 2018-07-05 Sabic Global Technologies B.V. Compositions de poly(ester-carbonate aliphatique) ductile, à écoulement élevé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166606A (en) * 1960-12-28 1965-01-19 Union Carbide Corp Polycarbonate resins having improved flow properties
FR2159896A5 (fr) * 1971-11-01 1973-06-22 Gen Electric
FR2249919A1 (fr) * 1973-10-31 1975-05-30 Bayer Ag

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA725726A (en) 1966-01-11 K. S. Kim James Resin compositions
CA702625A (en) 1965-01-26 H. Reinking Norman Polycarbonate resins having improved flow properties
BE591169A (fr) * 1959-05-25
GB1045533A (en) * 1963-02-21 1966-10-12 Gen Electric Flame-resistant polycarbonate compositions
US3647747A (en) * 1970-04-15 1972-03-07 Gen Electric High temperature molding flame retardant polycarbonate composition
DE2248817C2 (de) * 1972-10-05 1981-09-24 Bayer Ag, 5090 Leverkusen Polycarbonatmischungen
DE2620255C2 (de) * 1976-05-07 1982-07-01 Bayer Ag, 5090 Leverkusen Thermoplastische Formmassen und Formkörper aus Polycarbonaten mit verbesserter Entformbarkeit beim Spritzgießen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166606A (en) * 1960-12-28 1965-01-19 Union Carbide Corp Polycarbonate resins having improved flow properties
FR2159896A5 (fr) * 1971-11-01 1973-06-22 Gen Electric
FR2249919A1 (fr) * 1973-10-31 1975-05-30 Bayer Ag

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0364796A2 (fr) * 1988-10-15 1990-04-25 Bayer Ag Masses de mélanges de polycarbonates à mouler ayant une solubilité dispersée plus élevée
EP0364796A3 (fr) * 1988-10-15 1991-11-06 Bayer Ag Masses de mélanges de polycarbonates à mouler ayant une solubilité dispersée plus élevée
EP0374816A2 (fr) * 1988-12-20 1990-06-27 The Dow Chemical Company Procédé de dispersion d'additifs de résistance à l'inflammation dans des polycarbonates
EP0374816A3 (fr) * 1988-12-20 1991-04-03 The Dow Chemical Company Procédé de dispersion d'additifs de résistance à l'inflammation dans des polycarbonates
EP0390064A2 (fr) * 1989-03-27 1990-10-03 Teijin Chemicals, Ltd. Compositions de résine de polycarbonate ignifuge
US5045582A (en) * 1989-03-27 1991-09-03 Teijin Chemicals, Ltd. Fire-retardant polycarbonate resin composition
EP0390064A3 (fr) * 1989-03-27 1991-12-11 Teijin Chemicals, Ltd. Compositions de résine de polycarbonate ignifuge
EP0498406A2 (fr) * 1991-02-05 1992-08-12 Teijin Chemicals, Ltd. Composition de résine de polycarbonate
EP0498406A3 (en) * 1991-02-05 1992-09-23 Teijin Chemicals, Ltd. Polycarbonate resin composition
EP0570797A1 (fr) * 1992-05-21 1993-11-24 Bayer Ag Masses à mouler de polycarbonate et d'AB
EP0626411A1 (fr) * 1993-05-28 1994-11-30 General Electric Company Procédé et appareil pour augmenter l'uniformité de viscosité dans la préparation de polycarbonates
WO1999007778A1 (fr) * 1997-08-11 1999-02-18 Bayer Aktiengesellschaft Matieres moulables en polycarbonate-abs renforcees et resistantes a la flamme

Also Published As

Publication number Publication date
DE2729763A1 (de) 1979-01-18
DE2860027D1 (en) 1980-10-30
EP0000186B1 (fr) 1980-06-25
IT1105051B (it) 1985-10-28
JPS5414463A (en) 1979-02-02
JPS6157860B2 (fr) 1986-12-09
IT7850088A0 (it) 1978-06-29
US4186154A (en) 1980-01-29

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