Coaxial cable with improved properties and process of making same
US4104481A · kind A · utility
42Cited by
4References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1977 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Jun 8, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a coaxial cable having greatly improved mechanical and electrical properties derived from a foamed dielectric having a dielectric constant in the range of 1.32 to 1.1, a density between 0.1 and 0.29 grams per cubic centimeter, said foamed dielectric having dispersed throughout it undecomposed particles of a nucleating agent such cable being provided by a novel method of coating a center conductor of the cable with a dielectric with an extruded cellular polyolefin base composition which has been rendered cellular by the direct injection of a blowing agent in a liquid form into the polymer during an extrusion process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.