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US 2006/0234083 A1Published application
Polymers, their preparation and uses
AssigneeCambridge Display Technology Limited
InventorsBrian Tierney, Ilaria Grizzi, Clare Foden, Nalin Patel, Mark Leadbeater
Life of this patent
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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%.
Claims21
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%.
Dependencies are inferred from the claim text.