Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1989-11-22
1991-12-10
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
4284111, 428446, 428447, 428451, 428209, 428901, 361397, 174250, 174255, 174256, B32B 900
Patent
active
050717014
ABSTRACT:
Copolymers for use in preparing prepregs, which in turn are used to prepare printed circuit wiring boards are provided, as well as processes for producing the prepregs and wiring boards. The copolymers comprise repeating units derived from cycloolefin monomers, e.g., norbornene-type monomers, e.g., dicyclopentadiene-type monomers. Some of the monomers are silane-substituted while others are non silane-substituted. The silane-substituted monomers provide copolymers which exhibit improved properties when employed as the copolymers in prepregs for printed circuit wiring boards. For example, improved adhesion is achieved between the noncellulosic substrate and the polymers of components used in the wiring boards. These properties include, but are not limited to improved dielectric properties, improved adhesion to glass cloth substrates, etc.
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Benedikt George M.
Kettering Timothy J.
Minchak Robert J.
Smith David J.
Tenney Linwood P.
B. F. Goodrich Corporation
Ryan Patrick J.
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