South Dakota School of Mines and Technology

South Dakota Board of Regents

John T Bendler

David A Boyles

Tsvetanka Filipova

The present invention provides monomers, analogs, and/or derivatives of bisphenols substituted with one or more fluoromethyl groups. These monomers, analogs, and/or derivatives can be used to form oligomers and/or polymers, which in turn can be used to make compounds with dielectric properties suitable for dielectric materials, including for example, use in energy dense capacitors. In a preferred embodiment, the compounds can comprise a polycarbonate of a homopolymer, copolymer, and/or terpolymer of a bisphenol with one or more fluoromethyl substitution groups. In an aspect of the invention the compounds chosen can be selected based on various desired characteristics, including, for example, their energy density, glass transition temperature, dielectric loss, and/or dipole density.

Polycarbonates having superior dielectric properties suitable for energy dense capacitors

The present invention relates to a miscible transparent polymer blend, specifically, a polycarbonate blend which comprises homopolycarbonates and/or copolycarbonates. In particular, high aspect ratio monomers confer unique miscibility properties on polycarbonates. Miscible, transparent blends have been found to form from polycarbonate mixtures containing as components of the mixture (1) polycarbonates of bisphenol A monomers copolymerized with a variety of bisphenols, and (2) polycarbonates containing high aspect ratio monomers.

Miscible transparent blends of aromatic polycarbonates with polycarbonate polymers containing high-aspect ratio monomers

The invention relates to bisphenol monomers containing one or more biaryl units and related polymers, derivatives and resins thereof and more particularly to Bisphenol monomers containing two biaryl units separated by a spacer group X, and to bisphenol monomers containing a biaryl unit and an aryl unit separated by a spacer group X, and to polymers, derivatives, resins and related products prepared therefrom.

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Annapolis, MD, United States of America

John T Bendler