| 摘要 |
<p>An aromatic polyester which in filament form has improved responsiveness to heat strengthening consisting essentially of p-oxybenzoyl units, terephthaloyl units, 2,6-dioxynaphthalene or 2,6-dioxyanthraquinone units and m-oxybenzoyl, or 1,3-dioxyphenylene units.</p> |
