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US 2008/0166537 A1Published application
Coaxial Cable With Foamed Insulation
AssigneeDow Global Technologies LLC
InventorsDavid J. Frankowski, Rodney E. Ginger, Sandra Maki, Scott H. Wasserman
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Abstract
The present invention is directed to a coaxial cable comprising (a) an inner conductor, (b) an outer conductor, and (c) a foamed insulation, surrounding the inner conductor. The foamed insulation is prepared from an insulation composition comprising a foamable polymer, a foaming agent, and a particulate, non-halogenated, nonheterocyclic polyolefinic nucleating agent. The invention is also related to methods and compositions for making the foamed insulation.
Claims16
A coaxial cable comprising:
- (a) an inner conductor,
- (b) an outer conductor, and
- (c) a foamed insulation, surrounding the inner conductor, prepared from an insulation composition comprising
- (i) a foamable polymer,
- (ii) a foaming agent, and
- (iii) a particulate, non-halogenated, non-heterocyclic polyolefinic nucleating agent having a particle size and a surface tension which are effective for foaming the foamable polyolefin polymer at an expansion rate of at least about 70 percent.
3 more elements
An insulation composition comprising:
- (a) a foamable polymer,
- (b) a foaming agent, and
- (c) a particulate, non-halogenated, non-heterocyclic polyolefinic nucleating agent having a particle size and a surface tension which are effective for foaming the foamable polyolefin polymer at an expansion rate of at least about 70 percent.
Dependencies are inferred from the claim text.