Polycarbonate and optical disk therefrom

Details Polycarbonate and optical disk therefrom Polycarbonate and optical disk therefrom

1991-10-16

1992-12-22

Hess, B. Hamilton

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

478 65, 478412, 478913, 369288, 346 76L, 3461351, 430945, B32B 300

Patent

active

051733471

ABSTRACT:
A new aromatic polycarbonate is obtained from (1) 2,2-bis(4-hydroxy-3-isopropylphenyl)propane, (2) 2,2-bis(4-hydroxyphenyl)propane and 2,2-bis(4-hydroxy-3-isopropylphenyl) propane or (3) 4,4'-dihydroxy-2,2,2-triphenylethane and 2,2-bis(4-hydroxy-3-isopropylphenyl)propane through a carbonate linkage and is useful as a starting material for an optical disk.

REFERENCES:
patent: 4585722 (1986-04-01), Morinaka et al.
patent: 4680374 (1987-07-01), Hasuo et al.
patent: 4701770 (1987-10-01), Ito et al.
patent: 4707431 (1987-11-01), Umehara
patent: 4719171 (1988-01-01), Ikenaga et al.
patent: 4734488 (1988-03-01), Havvo et al.
patent: 4745029 (1988-05-01), Kambour

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