Title:
【発明の名称】ポリカーボネート共重合体
Document Type and Number:
Japanese Patent JP2562619
Kind Code:
B2
Abstract:
PURPOSE:To obtain the titled copolymer, consisting of specific two kinds of recurring units, having excellent heat resistance and transparency, capable of recording signals by laser beams or carrying out reading out of the signals recorded by reflection and transmission of the laser beams and useful as optical disks for recording information. CONSTITUTION:The aimed copolymer having recurring units expressed by formulas I and II at 1:99-99:1 molar ratio of the units expressed by formula I to II and preferably 13,000-50,000 viscosity-average molecular weight. This copolymer is obtained by linking 99-1mol.% 1,1-bis(4-hydroxy-3-tert-butylphenyl) cyclohexane to 1-99mol.% bisphenol P through carbonate bonds.
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Inventors:
TAKAHASHI IKUO
SUGANO TATSUYA
SUGANO TATSUYA
Application Number:
JP24247587A
Publication Date:
December 11, 1996
Filing Date:
September 29, 1987
Export Citation:
Assignee:
DAICEL CHEM
International Classes:
B41M5/26; C08G64/00; C08G64/06; G02B1/04; G11B7/24047; G11B7/2534; (IPC1-7): C08G64/06