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

Claim 18:
19. The polycarbonate resin according to claim 1, where R1 and R2 are selected from the group consisting of
azulenyl,
indenyl, which is unsubstituted or substituted by 1, 2, 3, 4 or 5 radicals selected from phenyl and polycyclic aryl bearing bearing 2, 3 or 4 phenyl rings, which are linked to each other via a single bond, directly fused to each other and/or fused to a saturated or unsaturated 4- to 10-membered mono- or bicyclic hydrocarbon ring;
phenyl, which is unsubstituted;
phenyl, which is substituted by 1 or 2 CN radicals;
phenyl, which is substituted by 1, 2, 3, 4 or 5 radicals selected from phenyl and polycyclic aryl bearing bearing 2, 3 or 4 phenyl rings, which are linked to each other via a single bond, directly fused to each other and/or fused to a saturated or unsaturated 4- to 10-membered mono- or bicyclic hydrocarbon ring; and
polycyclic aryl bearing 2, 3 or 4 phenyl rings, which are directly fused to each other and/or fused to a saturated or unsaturated 4- to 10-membered mono- or bicyclic hydrocarbon ring, where polycyclic aryl is unsubstituted or substituted by 1 or 2 radicals selected from phenyl and polycyclic aryl bearing 2 or 3 phenyl rings, which are linked to each other via a single bond, directly fused to each other and/or fused to a saturated 4- to 10-membered mono- or bicyclic hydrocarbon ring, where the phenyl rings of polycyclic aryl are unsubstituted or carry 1 or 2 radicals Ra.