Printed circuits with arc-retardance

Details Printed circuits with arc-retardance Printed circuits with arc-retardance

1975-02-03

1977-06-21

Robinson, Ellis

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

428209, 428215, 428336, 428411, 428460, 428463, 428436, 428442, 428415, 428416, 428418, 428522, 428526, 428530, 428531, 428901, 428920, H05K 100, B32B 1502

Patent

active

040313131

ABSTRACT:
A laminated material comprises a substrate material containing resin-impregnated layers, a metal foil disposed on said substrate and an arc-retardant layer arranged between the metal foil and the substrate material. The arc-retardant layer is an arc-retardant, crosslinked heat-stable synthetic resinous material consisting of from about 60 to 100% by weight of a heat-stable resin which is free of aromatic groupings or heterocyclic rings containing at least one heteroatom and conjugated double bonds and which is not converted to a graphite-containing structure upon being thermally decomposed.

REFERENCES:
patent: 2721153 (1955-10-01), Hopf
patent: 3090706 (1963-05-01), Cado
patent: 3240662 (1966-03-01), Smyers
patent: 3477900 (1969-11-01), Soukup
patent: 3558423 (1971-01-01), Rossetti
patent: 3770572 (1973-11-01), Henry
patent: 3809603 (1974-05-01), Kooi
patent: 3892903 (1975-07-01), Dowbenko

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