Stock material or miscellaneous articles – Composite – Of metal
Patent
1989-04-03
1991-03-12
Beck, Shrive
Stock material or miscellaneous articles
Composite
Of metal
428 358, 427304, 427306, C23C 2600
Patent
active
049992511
ABSTRACT:
The method is provided for treating the surface of a polyetherimide substrate to improve its adhesion characteristics for electrolessly deposited metal, such as copper. There is employed a series of surface treatments including the initial immersion of the polyetherimide substrate in sulfuric acid, contact with aqueous base, such as potassium hydroxide, followed by oxidation with an alkali metal permanganate such as potassium permanganate, and surface treatment with a reducing agent, such as a hydroxylamine salt. Polyetherimide metal composites are also provided.
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Dumas William V.
Foust Donald F.
Beck Shrive
Dang Vi Duong
Davis Jr. James C.
General Electric Company
Pittman William H.
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