Polymers, their preparation and uses
US9574049B2 · kind B2 · utility
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7References
9Claims
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Key dates
| Filing date | Mar 19, 2004 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Mar 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/631
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer comprising a first repeat unit of formula (I), wherein each Ar is independently selected from optionally substituted aryl or heteroaryl and the group of formula (I) is present in a molar ratio of less than or equal to 10%, and, optionally, a second, optionally substituted repeat unit having a single nitrogen atom in its backbone of formula —Ar—N(Ar)—Ar— in a molar ratio of no greater than 5%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.