Polymers for use in electronic devices
US11898011B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Feb 8, 2021 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Jan 23, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a dianhydride having Formula I, and diamines having Formula IV and Formula VIIIn the formulas: Y is alkyl, silyl, ester, siloxane, oligosiloxane, polysiloxane, O, S, SO2, BR3, NR3, P(O)R3, unsubstituted or substituted carbocyclic aryl, or unsubstituted or substituted heteroaryl and deuterated analogs thereof; Ar2— Ar4 are the same or different and are carbocyclic aryl, heteroaryl, or substituted derivatives thereof; Q1 is a single bond, alkyl, silyl, ester, siloxane, oligosiloxane, polysiloxane, O, S, SO2, BR3, NR3, P(O)R3, unsubstituted or substituted carbocyclic aryl, or
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.