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

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

1991-06-21

1992-03-17

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

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

Patent

active

050970003

ABSTRACT:
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.

REFERENCES:
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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