Non-tarnishing flame retardant insulation compositions

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

1991-06-26

1993-07-06

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524303, 524305, C08K 538

Patent

active

052254682

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 (1983-04-01), Biggs et al.
patent: 4385143 (1983-05-01), Yachigo et al.
patent: 4485202 (1984-11-01), Terada et al.
patent: 4576734 (1986-03-01), Ishii et al.
Abstract of JP-A-62-170 103 (Abstract No. 87-247108); Derwent Publications Ltd., London (WPIL).

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