Modified fluoropolymers for low flame/low smoke plenum cables
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United States of America Patent
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Sep 18, 1990
Grant Date -
N/A
app pub date -
Mar 30, 1989
filing date -
Mar 30, 1989
priority date (Note) -
Expired
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Abstract
An improved fluoropolymer composition for insulating wires or jacketing cables comprising a blend of fluoropolymer and an additive selected from the class consisting of zinc borate, ZnCO.sub.3, ZnCrO4, ZnMoO.sub.4, Zn.sub.3 (PO.sub.4).sub.2, ZnSiO.sub.4, ZnSO.sub.4, ZnTiO.sub.3, ZnZrO.sub.4, zinc ammonium sulfate, zinc acetyl acetonate, zinc formate, zinc oxalate, BiBO.sub.3, alumina trihydrate, mixtures of molybdenum and tin oxides, molybdenum trioxide, antimony trioxide, and pyrogenic silica. A preferred additive is zinc borate. This composition provides for wire insulation and cable jackets which have improved flame and smoke resistance with federal safety and Underwriters Laboratories standards.
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