Co-polycarbonate copolymer from 2,2-bis(4-hydroxy-3-tertiary but

Details Co-polycarbonate copolymer from 2,2-bis(4-hydroxy-3-tertiary but Co-polycarbonate copolymer from 2,2-bis(4-hydroxy-3-tertiary but

1987-12-03

1989-05-16

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

365126, 428412, 503200, C08G 6362

Patent

active

048311103

ABSTRACT:
An aromatic polycarbonate copolymer is useful for a substrate of an optical disk and is composed of 1 to 99 mole percent of the unit of 2,2-bis(4-hydroxy-3-tertiary-butyl-phenyl)propane, 99 to 1 mole percent of the unit of a comonomer selected from the group consisting of

REFERENCES:
patent: 4237259 (1980-12-01), Keeley
patent: 4734488 (1988-03-01), Hasuo et al.

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