Flame-retardant, water-resistant composition and coating transmi

Electricity: conductors and insulators – With fluids or vacuum – With fluid stops

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106 15FP, 106270, 156 47, 174121A, 260 285D, 260 457PH, 260 338UA, 260899, 427117, 427434, H02G 1500

Patent

active

039447170

ABSTRACT:
A telephone service cable which runs from a distribution cable to a subscriber's premises or to a pay station is another link in a buried communications system having a water-resisting capability. A spirally quaded core comprised of individually insulated conductors is advanced through a bath of a flame-retardant, water-resistant composition prior to enclosing the core with a jacket. The interstices in the core and between the core and an inner jacket are caused to be filled with the composition which comprises a liquid system and a solid system. The liquid system includes a chlorinated paraffin while the solid system includes a polyvinyl chloride resin and a chlorinated polyethylene. An epoxy stabilizer and a phosphite stabilizer may be added to prevent thermal degradation of the filling composition.

REFERENCES:
patent: 2456216 (1948-12-01), Richter
patent: 2881151 (1959-04-01), Young et al.
patent: 3006787 (1961-10-01), Blewis et al.
patent: 3194775 (1965-07-01), Bartlett
patent: 3194846 (1965-07-01), Blaga
patent: 3485788 (1969-12-01), Csaszar
patent: 3607487 (1971-09-01), Biskeborn et al.
patent: 3610814 (1971-10-01), Peacock
patent: 3781242 (1973-12-01), Mathis et al.
patent: 3784500 (1974-01-01), Gibbons
patent: 3845166 (1974-10-01), Betts et al.
Lyons, "The Chemistry and Use of Fire Retardants" (Rec'd 1-1972), p. 293.

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