Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1979-03-08
1982-11-23
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156 90, 1563074, 1563075, 156315, 156327, 156335, 174 685, 428249, 428251, 428252, 428284, 428285, 428286, 428288, 428290, 428506, 428901, B32B 2704, B32B 2730, B32B 2742, B32B 3112, H05K 100
Patent
active
043605605
ABSTRACT:
A base material for the production of printed circuits according to the additive method includes a laminate base made up of laminated-together core sheets impregnated with hardenable resin, and a cover layer made up of a substrate sheet preimpregnated with phenolic resol resin and provided with an adhesive layer of an elastomeric polymer. The preimpregnated substrate sheet is also provided with a further resin impregnation containing a self-crosslinking copolymer of acrylic monomers and up to 30% by weight of a hardenable phenolic resol resin.
REFERENCES:
patent: 3560328 (1971-02-01), Anderson et al.
patent: 3617613 (1971-11-01), Benzinger et al.
patent: 3804693 (1974-04-01), Nichols
patent: 3897588 (1975-07-01), Nohtomi
patent: 3972765 (1976-08-01), Kondo
patent: 4031313 (1977-06-01), Franz et al.
patent: 4074015 (1978-02-01), Franz
Franz Arnold
Huthwelker Dirk
Jacob Lothar
Kopnick Siegfried
Cannon James C.
Dynamit Nobel Aktiengesellschaft
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