Patent ID: 11952460
Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 19:
20. The polycarbonate resin according to claim 1, where R1 and R2 are selected from the group consisting of
phenyl, which is unsubstituted or substituted by 1, 2, 3, 4 or 5 phenyl radicals,
phenyl, which is substituted by 1 or 2 CN radicals,
phenyl, which is substituted by 1 or 2 polycyclic aryl radicals selected from biphenyl, naphthyl, fluorenyl, anthracenyl, phenanthryl and pyrenyl and optionally by 1 further phenyl radical;
naphthyl, which is unsubstituted or substituted by 1 or 2 radicals selected from CN, phenyl and polycyclic aryl selected from biphenyl, naphthyl, fluorenyl, anthracenyl, phenanthryl and pyrenyl;
biphenylenyl;
triphenylenyl;
tetraphenylenyl:
phenanthryl;
pyrenyl;
9H-fluorenyl;
dibenzo[a, e][8]annulenyl;
perylenyl; and
9,9′-spirobi[9H-fluoren]yl.