Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1992-04-27
1994-04-12
Fuller, Benjamin R.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428458, 174 35MS, B32B 1508, H05K 900
Patent
active
053024672
ABSTRACT:
A modified polyimide composition having improved adhesion characteristic to a metal layer and articles obtained therefrom. A limited quantity of water is added to a halogenated polyamic acid to form a reaction product, which is then sprayed, degreased, oxidized and cured into a layer of the modified polyimide composition. The chemically modified surface is then electrolessly plated with a primary metal layer followed by one or more electrolessly or electrolytically applied secondary metal layers until the metal layer of a desired thickness is attained. The present invention further discloses articles such as an EMI shielded enclosure and an insulated mold surface, having metal layers as an EMI shield and an insulating surface, respectively.
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Baumgartner Charles E.
Scott Lisa R.
Fuller Benjamin R.
General Electric Company
Lund Valerie Ann
Pittman William H.
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