| 摘要 |
<p>Polyetherimides and their polyamic acid precursors are derived from bisphenol A dianhydride, or a mixture thereof with pyromellitic dianhydride, and bis(4-amino-phenyl) sulfone or a mixture thereof with m-phenylenediamine and/or p-phenylenediamine. The polyetherimides are characterized by high thermal stability and solvent resistance.</p> |
