JPS6445424A - Polycarbonate polymer - Google Patents
Polycarbonate polymerInfo
- Publication number
- JPS6445424A JPS6445424A JP20296587A JP20296587A JPS6445424A JP S6445424 A JPS6445424 A JP S6445424A JP 20296587 A JP20296587 A JP 20296587A JP 20296587 A JP20296587 A JP 20296587A JP S6445424 A JPS6445424 A JP S6445424A
- Authority
- JP
- Japan
- Prior art keywords
- phenylethane
- bis
- hydroxy
- heated
- formula
- 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.)
- Pending
Links
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE:To obtain the titled polymer useful as a disc for optical information recording, having excellent optical characteristics, heat resistance and transparency, comprising 1,1-bis(4-hydroxy-3-tertiary butylphenyl)-1-phenylethane as bihydric phenolic component. CONSTITUTION:1,1-Bis(4-hydroxy-3-tertiary butylphenyl)-1-phenylethane shown by formula I is blended with diphenyl carbonate, heated to 160 deg.c, melted, incorporated with a phenol solution of potassium boron hydride as a carbonating catalyst, heated and reacted under reduced pressure and condensed for 1.5hr by gradually heating to 220 deg.C and reducing pressure to 0.1-0.3Torr to give the aimed polymer having a repeating unit shown by formula II (n is degree of polymerization).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20296587A JPS6445424A (en) | 1987-08-14 | 1987-08-14 | Polycarbonate polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20296587A JPS6445424A (en) | 1987-08-14 | 1987-08-14 | Polycarbonate polymer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6445424A true JPS6445424A (en) | 1989-02-17 |
Family
ID=16466096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20296587A Pending JPS6445424A (en) | 1987-08-14 | 1987-08-14 | Polycarbonate polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6445424A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5454651A (en) * | 1990-08-02 | 1995-10-03 | Canon Kabushiki Kaisha | Printer controller with addressable buffer memory |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61255929A (en) * | 1985-05-09 | 1986-11-13 | Idemitsu Kosan Co Ltd | Material for optical appliance |
-
1987
- 1987-08-14 JP JP20296587A patent/JPS6445424A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61255929A (en) * | 1985-05-09 | 1986-11-13 | Idemitsu Kosan Co Ltd | Material for optical appliance |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5454651A (en) * | 1990-08-02 | 1995-10-03 | Canon Kabushiki Kaisha | Printer controller with addressable buffer memory |
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