EP0000186B1 - Thermoplastisch verarbeitbare Polycarbonatmischungen, Verfahren zu deren Bereitung und deren Verwendung zur Herstellung von Formkörpern - Google Patents

Thermoplastisch verarbeitbare Polycarbonatmischungen, Verfahren zu deren Bereitung und deren Verwendung zur Herstellung von Formkörpern Download PDF

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Publication number
EP0000186B1
EP0000186B1 EP78100224A EP78100224A EP0000186B1 EP 0000186 B1 EP0000186 B1 EP 0000186B1 EP 78100224 A EP78100224 A EP 78100224A EP 78100224 A EP78100224 A EP 78100224A EP 0000186 B1 EP0000186 B1 EP 0000186B1
Authority
EP
European Patent Office
Prior art keywords
polycarbonate
component
preparation
mixtures according
melt
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
Application number
EP78100224A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0000186A1 (de
Inventor
Rudolf Dr. Binsack
Eckart Dr. Reese
Erhard Dr. Tresper
Joachim Ing. Grad. Wank
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.)
Bayer 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
Publication of EP0000186A1 publication Critical patent/EP0000186A1/de
Application granted granted Critical
Publication of EP0000186B1 publication Critical patent/EP0000186B1/de
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 50% by weight to 15% by weight of aromatic polycarbonates with Mw between 65,000 and 110,000 (component A) and 50% by weight to 85% by weight of aromatic polycarbonates with Mw between 29,000 and 39,000 (component B), the polycarbonates either homopolycarbonates from bis-2- (4-hydroxyphenyl) propane or copolycarbonates from at least 80 mol% of bisphenol A and up to 20 mol% from other halogen-free diphenols , based on the total molar amount of condensed diphenols, 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, and the films which can be obtained 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. Because an increase in molecular weight M w the polycarbonate to over 70,000 eliminates the susceptibility to stress cracking, 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 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 in the context of the invention are homopolycarbonates from bis-2- (4-hydroxyphenyl) propane (bisphenol-A) and copolycarbonates from at least 80 mol% of bisphenol A and up to 20 mol% of other halogen-free diphenols. (The molar percentages each refer to the total molar amount of condensed diphenols.)
  • halogen-free diphenols are bis- (hydroxyaryl) -C 1 ⁇ C 8 -alkanes other than bisphenol A and bis- (hydroxyaryl) -C 5 -C 6 -cycloalkanes, in particular bis- (4-hydroxyphenyl) -C 1 - C 8 alkanes and bis (4-hydroxyphenyl) -C 5 ⁇ C 6 cycloalkanes.
  • Copolycarbonates preferred according to the invention contain bis-phenol A and 1,1-bis (4-hydroxyphenyl) cyclohexane (bis-phenol 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 lower different molecular composition can distinguish.
  • the polycarbonate mixtures according to the invention consist of 50% by weight to 15% by weight, and in particular 40% by weight to 20% by weight of polycarbonate component A and 50% by weight to 85% by weight and in particular 60% by weight. % to 80% by weight of polycarbonate components 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 methyl 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 for example, of 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, powders of high-melting plastics, e.g. Polytetrafluoroethylene powder, natural fibers such as cotton, sisal and asbestos, furthermore glass fibers of various kinds, metal threads as well as fibers which are stable and do not noticeably damage the polycarbonates while they are in the melt of the polycarbonates.
  • fillers such as glass powder, quartz products, graphite, molybdenum sulfide, metal powder, powders of high-melting plastics, e.g. Polytetrafluoroethylene powder, natural fibers such as cotton, sisal and asbestos, furthermore glass fibers of various kinds, metal threads as well as 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 filler 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 squeezed out through a slot die and drawn off to about 40 ⁇ m thick foils using a chill-roll system.
  • the films have 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 according to Example 1, was extruded as a strand and was granulated, was processed on a bottle blowing system into bottles with a content of 1 l and a wall thickness of 2 mm.
  • the bottle produced from the mixture according to the invention shows, compared to the bottle made of 100% component B, in the cleaning or. Sterilization test following properties:

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)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP78100224A 1977-07-01 1978-06-23 Thermoplastisch verarbeitbare Polycarbonatmischungen, Verfahren zu deren Bereitung und deren Verwendung zur Herstellung von Formkörpern Expired EP0000186B1 (de)

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 EP0000186A1 (de) 1979-01-10
EP0000186B1 true EP0000186B1 (de) 1980-06-25

Family

ID=6012914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100224A Expired EP0000186B1 (de) 1977-07-01 1978-06-23 Thermoplastisch verarbeitbare Polycarbonatmischungen, Verfahren zu deren Bereitung und deren Verwendung zur Herstellung von Formkörpern

Country Status (5)

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

Families Citing this family (22)

* 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
DE3835203A1 (de) * 1988-10-15 1990-04-19 Bayer Ag Formmassen aus polycarbonat-mischungen hoher disperser loeslichkeit
US5041479A (en) * 1988-12-20 1991-08-20 The Dow Chemical Company Dispersing ignition resistant additives into carbonate polymers
JPH0619007B2 (ja) * 1989-03-27 1994-03-16 帝人化成株式会社 難燃性ポリカーボネート樹脂組成物
US5162458A (en) * 1990-09-07 1992-11-10 General Electric Company Solvent resistant linear polycarbonate compositions
US5153276A (en) * 1990-09-07 1992-10-06 General Electric Company Solvent resistant polycarbonate blends
US5162459A (en) * 1990-09-07 1992-11-10 General Electric Company Solvent resistant polycarbonate compositions
JP2608188B2 (ja) * 1991-02-05 1997-05-07 帝人化成株式会社 ポリカーボネート樹脂組成物
DE4216758A1 (de) * 1992-05-21 1993-11-25 Bayer Ag Polycarbonat-ABS-Formmassen
US5331085A (en) * 1993-05-28 1994-07-19 General Electric Company Method for increasing viscosity uniformity in polycarbonate manufacture
DE19734667A1 (de) * 1997-08-11 1999-02-18 Bayer Ag Flammwidrige, verstärkte Polycarbonat-ABS-Formmassen
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
EP2452980B1 (en) 2009-07-09 2019-01-16 Daicel-Evonik Ltd. Thermoplastic resin composition and molded article of same
CN107207720A (zh) * 2015-02-17 2017-09-26 沙特基础工业全球技术有限公司 淬灭熔融聚碳酸酯的方法
WO2018122720A1 (en) * 2016-12-30 2018-07-05 Sabic Global Technologies B.V. High flow, ductile poly(aliphatic ester-carbonate) compositions

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA702625A (en) 1965-01-26 H. Reinking Norman Polycarbonate resins having improved flow properties
CA725726A (en) 1966-01-11 K. S. Kim James Resin compositions
BE591169A (enrdf_load_stackoverflow) * 1959-05-25
US3166606A (en) * 1960-12-28 1965-01-19 Union Carbide Corp Polycarbonate resins having improved flow properties
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
BE790385A (fr) * 1971-11-01 1973-02-15 Gen Electric Perfectionnements aux compositions thermoplastiques a inflammation retardee, et aux procedes pour leur
DE2248817C2 (de) * 1972-10-05 1981-09-24 Bayer Ag, 5090 Leverkusen Polycarbonatmischungen
CA1044839A (en) * 1973-10-31 1978-12-19 Rudolph Binsack Polycarbonate film of low inflammability
DE2620255C2 (de) * 1976-05-07 1982-07-01 Bayer Ag, 5090 Leverkusen Thermoplastische Formmassen und Formkörper aus Polycarbonaten mit verbesserter Entformbarkeit beim Spritzgießen

Also Published As

Publication number Publication date
IT1105051B (it) 1985-10-28
JPS6157860B2 (enrdf_load_stackoverflow) 1986-12-09
JPS5414463A (en) 1979-02-02
DE2729763A1 (de) 1979-01-18
US4186154A (en) 1980-01-29
EP0000186A1 (de) 1979-01-10
IT7850088A0 (it) 1978-06-29
DE2860027D1 (en) 1980-10-30

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