Process for producing fire retardant and heat resistant copper-c

Details Process for producing fire retardant and heat resistant copper-c Process for producing fire retardant and heat resistant copper-c

1981-03-30

1983-08-23

Dawson, Robert A.

Stock material or miscellaneous articles

Composite

Of metal

106 1824, 1563073, 1563074, 1563075, 1563077, 156313, 1563311, 1563315, 252601, 428920, 428921, 525 66, B32B 1508, B32B 3112

Patent

active

044004389

ABSTRACT:
A process for producing a fire retardant and heat resistant copper-clad laminated board, characterized in that a maleimide resin type varnish containing a small amount of a specific halogenated diphenyl ether compound is used for impregnation of base material therewith. Copper-clad laminated boards produced according to the present invention may be so improved in fire or flame retardant properties as to be classed 94 V-0 in accordance with UL 94 (vertical burning test), and, nevertheless, are not substantially downgraded in heat resisting properties as well as copper foil peel strength.

REFERENCES:
patent: 3075944 (1963-01-01), Wick et al.
patent: 3902951 (1975-09-01), Doi et al.
patent: 4193829 (1980-03-01), Kourtides et al.
patent: 4266037 (1981-05-01), DiGiulio et al.
Product Information of Great Lakes Chemical Corporation for "DE-71".TM., Apr. 16, 1976.

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