Non-tarnishing flame retardant insulation compositions

Details Non-tarnishing flame retardant insulation compositions Non-tarnishing flame retardant insulation compositions

1993-03-29

1993-10-26

Schofer, Joseph L.

Stock material or miscellaneous articles

Composite

Of metal

428522, 524265, 524303, 524305, B32B 2730

Patent

active

052564886

ABSTRACT:
The present invention relates to improved flame retardant insulation/jacketing compositions for wire and cable products based on ethylene-vinyl ester and ethylene-alkyl acrylate copolymers. The copolymers are formulated with a hydrated inorganic filler, an alkoxysilane, a crosslinking agent, a processing additive and a combination of specific antioxidants, namely, a pentaerythritol betaalkylthiopropionate and a hindered phenol. The formulations stabilized with the pentaerythritol betaalkylthiopropionate/hindered phenol combination have good heat stability and do not tarnish or discolor the surface of the copper conductor upon steam vulcanization.

REFERENCES:
patent: 4381362 (1981-08-01), Biggs

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