| 摘要 |
<p>Helt-stable aromatic polyketones useful in, eg, electrical insulation and comprised of, eg, the recurring unit wherein m, n and x are 0 or 1 (n being 0 when x is 1) are prepared by HF/BF3-catalyzed polymeriztion at 0.degree.C of appropriately chosen nucleophilic and electrophilic coreactants, preferably terephthaloyl chloride and 1,4 -diphenoxybenzene (m=1, x and n=0).</p> |
