Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1992-04-09
1994-06-14
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428220, 428224, 428260, 428289, 428290, 4284111, 428457, 428458, 428480, 4285395, 428332, 428577, 428615, 428901, 156228, 430319, 430311, 430313, 430315, B32B 900
Patent
active
RE0346381
ABSTRACT:
Printed wiring boards useful for high frequency applications are obtained by laminating a conductive foil pretreated with a silane to a polynorbornene prepreg wherein a sheet of polyolefin film derived from C.sub.2 -C.sub.4 monomers is laminated between the prepreg and the foil to the surfaces of each member. The prepreg is made by impregnating a fiberglass cloth with a ring-opening polymerized polymer. The conductive foil is pretreated with a silane which is capable of improving the bond strength between the conductive foil and a norbornene copolymer.
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B. F. Goodrich Company
Jewik Pateick R.
Ryan Patrick J.
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