Compounds, monomers, and polymers based on perfluoroalkyl...

Details Compounds, monomers, and polymers based on perfluoroalkyl... Compounds, monomers, and polymers based on perfluoroalkyl...

C - Chemistry, Metallurgy

07

D

C07D 493/04 (2006.01) C07D 491/22 (2006.01) C07D 493/22 (2006.01) C08G 73/10 (2006.01)

Patent

CA 2061274

PE-0225 TITLE COMPOUNDS, MONOMERS, AND POLYMERS BASED ON PERFLUOROALKYL AND PERFLUOROALKYL-ARYL DIOXAPENTACENE ABSTRACT OF THE DISCLOSURE Rigid fluorine-containing compounds, monomers, and polymers based on pentacyclic core systems, such as 12H,14H-5,7-dioxapentacene with perfluoroalkyl and/or aryl groups in the 12, 14 positions, and 5H,12H-7,14- dioxapentacene, with perfluoroalkyl and/or aryl groups in the 5,12 positions. These monomers have utility in the preparation of advanced high-performance polymers, particularly polyimides. The rigid pentacyclic core decreases the coefficient of thermal expansion of the polymers, while the fluorinated substituents improve the dielectric constant and water absorption properties. Each monomer unit contains within its pentacyclic core two-O-bridges, and two -CRRf bridges (where R is aryl, substituted aryl or perfluoroalkyl, and Rf is perfluoroalkyl).

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