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US 7,608,309 B2Granted
Resin composition, film and image display device utilizing the resin composition
AssigneeFUJIFILM Corporation
InventorsTetsufumi Takamoto, Seiya Sakurai
Life of this patent
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Abstract
A resin composition containing a polymer comprising a repeating unit having a spiro structure and/or a cardo structure. The resin composition has superior heat resistance and is utilized to produce an optical film and an image display.
Claims18
A resin composition containing a polymer comprising a chemical structure represented by the following formula (1) or (2) as a repeating unit:
- wherein the rings α represent a monocyclic or polycyclic ring, and two of the rings α may be identical or different, and are bound via a spiro bond,
- wherein the ring β and the rings γ represent a monocyclic or polycyclic ring, and two of the rings γ may be identical or different, and bond to one quaternary carbon atom in the ring β.
Dependencies are inferred from the claim text.