9,9-bis (perfluoroalkyl) xanthene, 9-aryl-9-perfluoroalkylxanthe

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate


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528125, 528170, 528172, 528173, 528176, 528185, 528188, 528190, 528191, 5283291, 528350, 528353, 549388, C08G 6300, C08G 7310, C08G 6920, C07D31182




Disclosed are rigid fluorinated monomers, their preparation, and polymers derived therefrom based on two novel tricyclic xanthene core systems, 9,9-bis-(perfluoroalkyl)xanthene (I) and 9-phenyl-9-perfluoroalkylxanthene (II). The monomers have utility in the preparation of advanced high-performance polymers, particularly polyimides.

patent: 4876329 (1989-10-01), Chiang et al.
patent: 4912197 (1990-03-01), Hayes
patent: 4997908 (1991-03-01), Lee
patent: 5003031 (1991-03-01), Schwartz et al.
patent: 5003086 (1991-03-01), Stults et al.
patent: 5021168 (1991-06-01), Molinaro et al.


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