| 摘要 |
<p>The present invention is a cable comprising one or more electrical conductors or a core of one or more electrical conductors and having each conductor or core being surrounded by a layer of insulation. The insulation comprises an olefinic polymer, having a density in the range of 0.880 to 0.915 grams per cubic centimeter, a melting temperature of at least 115 degrees Celsius, a melt index in the range of 0.5 to 10 grams per 10 minutes, a crystallization-analysis-soluble fraction in 1,2,4-trichlorobenzene at 30 degrees Celsius of less than 35 weight percent, and a polydispersity index of at least 3.5. Alternatively, the insulation layer has an 1% secant flexural modulus at ambient of less than 15,000 psi and a dynamic elastic modulus at 150 degrees Celsius of at least 4x107 dyne/square centimeter.</p> |
