| 摘要 |
<p>Poly(tetramethylene terephthalate) contains not 2.5 (2.5-40) wt.% (w.r.t. total compsn). of not 1 finely divided metal borate which is stable under the processing conditions of the polyester. The compsns. have very high arcing and track resistance, and are used esp. in electrical apples., e.g. distributor heads.</p> |
