Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1992-11-20
1994-08-16
Beck, Shrive
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 97, C23C 2600
Patent
active
053385675
ABSTRACT:
This invention concerns a method of manufacturing printed wiring boards by electrolessly plating copper on a precatalyzed base material which contains a polymeric resin, woven glass cloth reinforcement and a noble metal catalyst on clay support to precatalyze the base material for electrolessly depositing copper. The improvement comprises providing in the polymeric resin, a phenolic resin component and a silicate filler. The silicate filler is present in an amount between 30 and 100 part per hundred parts of the polymeric resin, and in an amount sufficient to provide a take time for the initiation of electroless copper deposition at least two times faster than a comparable precatalyzed base material without the silicate filler and phenolic resin.
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AMP-Akzo Corporation
Beck Shrive
Dang Vi Duong
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