Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
528176, 528183, 528185, 528188, 528190, 528191, C07D31182, C08G 6302
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: 4698295 (1987-10-01), Pfeifer et al.
Anderson Harold D.
E. I. Du Pont de Nemours and Company
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