Flame-retardant metal-clad dielectric sheeting comprising a non-

Details Flame-retardant metal-clad dielectric sheeting comprising a non- Flame-retardant metal-clad dielectric sheeting comprising a non-

1978-03-27

1979-02-20

Cannon, J.C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

174 685, 427 96, 427 97, 427 98, 427 99, 428287, 428288, 428290, 428458, 428901, B32B 1508, B32B 1514, D04H 158

Patent

active

041408314

ABSTRACT:
Flame-retardant metal-clad dielectric sheeting useful in printed circuitry manufacture comprising an electrically conductive metallic layer adhered to a compacted dimensionally stable non-woven web by a polyester diepoxide adhesive system. The diepoxide is formed by end-capping a polyester formed from neopentyl glycol and an acid selected from the group consisting of azelaic, sebasic, and adipic acids with a moderately brominated bisphenol A-epichlorohydrin epoxy. The curing agent for the diepoxide system is a polyanhydride selected from the group consisting of polyazelaic, polyadipic, and polysebasic anhydrides.

REFERENCES:
patent: 3027279 (1962-03-01), Kurka et al.
patent: 3878316 (1975-04-01), Groff
patent: 3955024 (1976-05-01), Goldman
patent: 4035694 (1977-07-01), Barton et al.

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