| 摘要 |
<p>Novel copoly(arylene ether ketones) having a biphenylene-4,4 min -dicarbonyl group in their backbone, comprising (A) a repeat unit <CHEM> and (B) a repeat unit selected from the group consisting of <CHEM> where R, which is the same in each of repeat units (A) and (B), is a direct bond, <CHEM> the molar ratio of repeat units (A) to repeat units (B) being between about 10:90 and about 70:30.</p> |
