| 摘要 |
<p>A polyethersulfone composition is disclosed which comprises structural units derived from a monomer mixture comprising fluorenylidene bisphenol-A and at least 50 mole percent of 4,4'-biphenol based on total moles of diphenolic monomers, wherein the polyethersulfone has a minimum glass transition temperature of 235°C and a notched Izod impact value of 1 ft-lb/in. as measured by ASTM D256.</p> |
