JPS6424829A - Polycarbonate molding material for optical disc - Google Patents

Polycarbonate molding material for optical disc

Info

Publication number
JPS6424829A
JPS6424829A JP62180042A JP18004287A JPS6424829A JP S6424829 A JPS6424829 A JP S6424829A JP 62180042 A JP62180042 A JP 62180042A JP 18004287 A JP18004287 A JP 18004287A JP S6424829 A JPS6424829 A JP S6424829A
Authority
JP
Japan
Prior art keywords
optical disc
polycarbonate resin
free chlorine
molding material
arom
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
JP62180042A
Other languages
Japanese (ja)
Other versions
JP2621871B2 (en
Inventor
Toshikazu Umemura
Kenji Maeda
Toshiaki Izumida
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP62180042A priority Critical patent/JP2621871B2/en
Priority to EP88111791A priority patent/EP0300485A3/en
Priority to US07/222,483 priority patent/US4845193A/en
Publication of JPS6424829A publication Critical patent/JPS6424829A/en
Application granted granted Critical
Publication of JP2621871B2 publication Critical patent/JP2621871B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C08G64/40—Post-polymerisation treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To obtain an arom. polycarbonate resin having its free chlorine content adjusted to less than a specified amt., so that an optical disc made thereof is excellent in long-term reliability regardless of the material used for recording film. CONSTITUTION:An arom. polycarbonate resin obtd. by the reaction of bisphenol with phosgene has its free chlorine content decreased to 0.2ppm or lower. The decrease of the free chlorine is attained by separating a purified polycarbonate resin soln. from washing water by means of centrifugal separation and filtration in combination.
JP62180042A 1987-07-21 1987-07-21 Polycarbonate molding material for optical disks Expired - Lifetime JP2621871B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62180042A JP2621871B2 (en) 1987-07-21 1987-07-21 Polycarbonate molding material for optical disks
EP88111791A EP0300485A3 (en) 1987-07-21 1988-07-21 Process for producing polycarbonate resin molding material with low particle content
US07/222,483 US4845193A (en) 1987-07-21 1988-07-21 Process for producing polycarbonate resin molding material having low particle content with vented extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62180042A JP2621871B2 (en) 1987-07-21 1987-07-21 Polycarbonate molding material for optical disks

Publications (2)

Publication Number Publication Date
JPS6424829A true JPS6424829A (en) 1989-01-26
JP2621871B2 JP2621871B2 (en) 1997-06-18

Family

ID=16076467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62180042A Expired - Lifetime JP2621871B2 (en) 1987-07-21 1987-07-21 Polycarbonate molding material for optical disks

Country Status (1)

Country Link
JP (1) JP2621871B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01271939A (en) * 1988-04-23 1989-10-31 Hitachi Maxell Ltd Optical information recording medium
JPH03116559A (en) * 1989-09-29 1991-05-17 Sony Corp Optical information recording medium
JPH11241012A (en) * 1997-12-22 1999-09-07 General Electric Co <Ge> Polycarbonate formulation for semiconductor wafer opaque to light at certain wavelength and carrier
JP2003026793A (en) * 2001-07-16 2003-01-29 Teijin Chem Ltd Process for producing purified polycarbonate resin
JP2003026792A (en) * 2001-07-16 2003-01-29 Teijin Chem Ltd Process for producing purified polycarbonate resin

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA747994A (en) * 1966-12-06 T. Szabo Ted Process for removing impurities in highly viscous polymer masses
JPS5296697A (en) * 1976-02-10 1977-08-13 Mitsubishi Chem Ind Ltd Production of polycarbonate
JPS54138097A (en) * 1978-04-19 1979-10-26 Mitsubishi Chem Ind Ltd Method of washing a polycarbonate solution in an organic solvent
JPS57131225A (en) * 1981-02-09 1982-08-14 Teijin Chem Ltd Purification of polycarbonate solution
JPS6231801A (en) * 1985-08-02 1987-02-10 Teijin Chem Ltd Optical molding
JPS6271902A (en) * 1985-09-26 1987-04-02 Teijin Chem Ltd Molding for optical article
JPS6397627A (en) * 1986-10-14 1988-04-28 Sony Corp Optical information recording medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA747994A (en) * 1966-12-06 T. Szabo Ted Process for removing impurities in highly viscous polymer masses
JPS5296697A (en) * 1976-02-10 1977-08-13 Mitsubishi Chem Ind Ltd Production of polycarbonate
JPS54138097A (en) * 1978-04-19 1979-10-26 Mitsubishi Chem Ind Ltd Method of washing a polycarbonate solution in an organic solvent
JPS57131225A (en) * 1981-02-09 1982-08-14 Teijin Chem Ltd Purification of polycarbonate solution
JPS6231801A (en) * 1985-08-02 1987-02-10 Teijin Chem Ltd Optical molding
JPS6271902A (en) * 1985-09-26 1987-04-02 Teijin Chem Ltd Molding for optical article
JPS6397627A (en) * 1986-10-14 1988-04-28 Sony Corp Optical information recording medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01271939A (en) * 1988-04-23 1989-10-31 Hitachi Maxell Ltd Optical information recording medium
JPH03116559A (en) * 1989-09-29 1991-05-17 Sony Corp Optical information recording medium
JPH11241012A (en) * 1997-12-22 1999-09-07 General Electric Co <Ge> Polycarbonate formulation for semiconductor wafer opaque to light at certain wavelength and carrier
JP2003026793A (en) * 2001-07-16 2003-01-29 Teijin Chem Ltd Process for producing purified polycarbonate resin
JP2003026792A (en) * 2001-07-16 2003-01-29 Teijin Chem Ltd Process for producing purified polycarbonate resin

Also Published As

Publication number Publication date
JP2621871B2 (en) 1997-06-18

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