Filled cables
First Claim
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1. A cable comprising:
- a plurality of conductors contained within a sheath leaving voids between the conductors, and between the conductors and the sheath, and a filling material filling the voids the invention characterized in that the filling material comprises a mixture of;
(X) an ASTM Type 103, 104A or 104B, or mixtures thereof, (paraffinic or naphthenic) oil, having a minimum sp. gr. of 0.860, a minimum SUS viscosity at 210 degrees F. of 45, a maximum pour point ASTM D 97 of 20 degrees F. and a maximum of 5 percent aromatic oils,(Y) a styrene-ethylene butylene-styrene block copolymer having a styrene-rubber ratio of approximately 0.2 to 0.5,(Z) polyethylene having a softening point of 110 degrees C. to 130 degrees C.the ingredients X, Y and Z having relative proportions falling within the shaded area bounded by ABCDEF of the FIGURE.
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Abstract
An improved filling material having superior handling characteristics and useful for waterproofing electrical cables is disclosed. The material is a styrene-ethylene butylene styrene block copolymer dissolved in a naphthenic or paraffinic oil, with polyethylene added for consistency.
468 Citations
8 Claims
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1. A cable comprising:
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a plurality of conductors contained within a sheath leaving voids between the conductors, and between the conductors and the sheath, and a filling material filling the voids the invention characterized in that the filling material comprises a mixture of; (X) an ASTM Type 103, 104A or 104B, or mixtures thereof, (paraffinic or naphthenic) oil, having a minimum sp. gr. of 0.860, a minimum SUS viscosity at 210 degrees F. of 45, a maximum pour point ASTM D 97 of 20 degrees F. and a maximum of 5 percent aromatic oils, (Y) a styrene-ethylene butylene-styrene block copolymer having a styrene-rubber ratio of approximately 0.2 to 0.5, (Z) polyethylene having a softening point of 110 degrees C. to 130 degrees C. the ingredients X, Y and Z having relative proportions falling within the shaded area bounded by ABCDEF of the FIGURE. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An encapsulating compound comprising a mixture of:
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(X) an ASTM Type 103, 104A or 104B, or mixtures thereof, (paraffinic or naphthenic) oil, having a minimum sp. gr. of 0.860, a minimum SUS viscosity at 210 degrees F. of 45, a maximum pour point ASTM D 97 of 20 degrees F. and a maximum of 5 percent aromatic oils, (Y) a styrene-ethylene butylene-styrene block copolymer having a styrene-rubber ratio of approximately 0.2 to 0.5, (Z) polyethylene having a softening point of 110 degrees C. to 130 degrees C., the ingredients X, Y and Z having relative proportions falling within the shaded area bounded by ABCDEF of the FIGURE. - View Dependent Claims (8)
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Specification