EP1244726A1 - Verfahren zur herstellung von polycarbonaten - Google Patents

Verfahren zur herstellung von polycarbonaten

Info

Publication number
EP1244726A1
EP1244726A1 EP00974438A EP00974438A EP1244726A1 EP 1244726 A1 EP1244726 A1 EP 1244726A1 EP 00974438 A EP00974438 A EP 00974438A EP 00974438 A EP00974438 A EP 00974438A EP 1244726 A1 EP1244726 A1 EP 1244726A1
Authority
EP
European Patent Office
Prior art keywords
polycarbonate
phase
sodium hydroxide
hydroxide solution
separated
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Withdrawn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
EP00974438A
Other languages
German (de)
English (en)
French (fr)
Inventor
Michael BÖDIGER
Steffen Kühling
Franky Bruynseels
Dirk Van Meirvenne
Réne DE CLEYN
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 Antwerpen NV
Covestro Deutschland AG
Original Assignee
Bayer Antwerpen NV
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 Antwerpen NV, Bayer AG filed Critical Bayer Antwerpen NV
Publication of EP1244726A1 publication Critical patent/EP1244726A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G64/00—Macromolecular compounds obtained by reactions forming a carbonic ester link in the main chain of the macromolecule
    • C08G64/20—General preparatory processes
    • C08G64/22—General preparatory processes using carbonyl halides
    • C08G64/24—General preparatory processes using carbonyl halides and phenols
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]

Definitions

  • Polycarbonate is produced by the so-called phase interface process, in which dihydroxydiarylalkanes in the form of their alkali salts are reacted with phosgene in the heterogeneous phase in the presence of inorganic bases such as sodium hydroxide solution and an organic solvent in which the product polycarbonate is readily soluble.
  • phase interface process in which dihydroxydiarylalkanes in the form of their alkali salts are reacted with phosgene in the heterogeneous phase in the presence of inorganic bases such as sodium hydroxide solution and an organic solvent in which the product polycarbonate is readily soluble.
  • inorganic bases such as sodium hydroxide solution
  • organic solvent in which the product polycarbonate is readily soluble
  • This also includes embodiments in which sodium bisphenolate (solution) was previously produced from sodium hydroxide solution and bisphenol (s).
  • At least two of these filtrations are preferably carried out.
  • Step-by-step filtration starts with coarser filters and then changes to finer filters. It is preferred that the filtration of the two-phase media in process step d) is carried out using coarser filters.
  • the concentration of HC1 or H 3 PO 4 in the washing liquid can be, for example, 0.5 to 1.0% by weight.
  • the organic phase is washed by way of example and preferably five times.
  • the solvent is evaporated to obtain the high-purity polycarbonate.
  • Particularly preferred bisphenols belonging to the above-mentioned connecting groups are 2,2-bis (4-hydroxyphenyl) propane (bisphenol-A / BPA), tetraalkyl-bisphenol-A, 4,4- (meta-phenylenediisopropyl) diphenol ( Bisphenol M), l, l-bis- (4-hydroxyphenyl) -3,3,5-trimethylcyclohexanone and optionally their mixtures.
  • Particularly preferred copolycarbonates are those based on the monomers bisphenol-A and 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane.
  • the bisphenol compounds to be used according to the invention are reacted with carbonic acid compounds, in particular phosgene.
  • Preferred chain terminators are the phenols of the formula (I)
  • branching agents can also be added to the reaction.
  • Preferred branching agents are the tri- or more than trifunctional ones known in polycarbonate chemistry. tional compounds, especially those with three or more than three phenolic OH groups.
  • the moldings according to the invention optionally have a surface finish, for example a scratch-resistant coating.
  • the extrusion film is 200 ⁇ m thick and 60 mm wide.
  • a He-Ne laser spot diameter (spot diameter" of 0.1 mm) scans the film with a scanning frequency of 5000 Hz in the width direction and a transport speed of 5 m / s in the longitudinal direction. All interferences that scatter the continuous laser beam (from 0.10 mm diameter) are detected by a photomultiplier and counted by software.
  • the number of optical defects per kg of polycarbonate or per m 2 of film is a measure of the surface quality of this film or the purity of the PC.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
EP00974438A 1999-11-03 2000-10-23 Verfahren zur herstellung von polycarbonaten Withdrawn EP1244726A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19952848A DE19952848A1 (de) 1999-11-03 1999-11-03 Verfahren zur Herstellung von Polycarbonaten
DE19952848 1999-11-03
PCT/EP2000/010397 WO2001032746A1 (de) 1999-11-03 2000-10-23 Verfahren zur herstellung von polycarbonaten

Publications (1)

Publication Number Publication Date
EP1244726A1 true EP1244726A1 (de) 2002-10-02

Family

ID=7927749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00974438A Withdrawn EP1244726A1 (de) 1999-11-03 2000-10-23 Verfahren zur herstellung von polycarbonaten

Country Status (10)

Country Link
US (1) US6835798B1 (https=)
EP (1) EP1244726A1 (https=)
JP (1) JP2003514044A (https=)
KR (1) KR100686675B1 (https=)
CN (1) CN100349953C (https=)
AU (1) AU1274701A (https=)
BR (1) BR0015263A (https=)
DE (1) DE19952848A1 (https=)
TW (1) TWI268942B (https=)
WO (1) WO2001032746A1 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003128934A (ja) * 2001-10-25 2003-05-08 Teijin Chem Ltd 光学用透明熱可塑性樹脂成形材料および該材料よりなる光ディスク基板
JP2003128935A (ja) * 2001-10-25 2003-05-08 Teijin Chem Ltd 光学用透明熱可塑性樹脂成形材料および該材料よりなる光ディスク基板
DE102004045822A1 (de) * 2004-09-22 2006-04-06 Bayer Materialscience Ag Verfahren zur Herstellung von Polycarbonat
JP2006313638A (ja) * 2006-07-25 2006-11-16 Teijin Chem Ltd 光ディスク基板の製造方法
TW202037632A (zh) * 2018-12-28 2020-10-16 日商三菱瓦斯化學股份有限公司 熱塑性樹脂及其製造方法以及包含該熱塑性樹脂之光學透鏡
CN119215813A (zh) * 2024-12-03 2024-12-31 浙江石油化工有限公司 一种聚碳酸酯生产装置堵料的清洗方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5215499A (en) 1975-07-28 1977-02-05 Nippon Soda Co Ltd Method for production of ultrahigh purity sodium salt
JPH0653793B2 (ja) 1986-10-22 1994-07-20 出光石油化学株式会社 ポリカ−ボネ−ト有機溶剤液の洗浄方法
DE3706205A1 (de) * 1987-02-26 1988-09-08 Bayer Ag Verfahren zur herstellung von polycarbonatloesungen
JP3038804B2 (ja) * 1990-06-08 2000-05-08 三菱化学株式会社 光学用ポリカーボネート成形材料
US5254614A (en) 1990-06-08 1993-10-19 Mitsubishi Kasei Corporation Polycarbonate resin composition for optical use
JP3038803B2 (ja) * 1990-06-08 2000-05-08 三菱化学株式会社 光学用ポリカーボネート樹脂成形材料
JP3103652B2 (ja) 1992-02-27 2000-10-30 日本ジーイープラスチックス株式会社 光学用ポリカーボネート組成物の製造方法
JPH07196783A (ja) 1994-01-07 1995-08-01 Mitsui Toatsu Chem Inc 芳香族ポリカーボネートの製造方法
JP3582746B2 (ja) * 1995-12-28 2004-10-27 日本ジーイープラスチックス株式会社 樹脂組成物
DE10001036A1 (de) * 2000-01-13 2001-07-19 Bayer Ag Polycarbonat-Substrate

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0132746A1 *

Also Published As

Publication number Publication date
US6835798B1 (en) 2004-12-28
CN100349953C (zh) 2007-11-21
AU1274701A (en) 2001-05-14
JP2003514044A (ja) 2003-04-15
DE19952848A1 (de) 2001-05-10
TWI268942B (en) 2006-12-21
KR100686675B1 (ko) 2007-02-27
BR0015263A (pt) 2002-06-25
WO2001032746A1 (de) 2001-05-10
CN1382174A (zh) 2002-11-27
KR20020053836A (ko) 2002-07-05

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