Method of applying adherent coating on copper

Details Method of applying adherent coating on copper Method of applying adherent coating on copper

1988-07-07

1990-09-04

Woo, Jay H.

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

148269, 148272, 148276, C23C 810

Patent

active

049541854

ABSTRACT:
A method of applying a coating to the inner layers of multilayer boards made of copper. The cured coating is capable of maintaining adhesion without outgassing for at least 10 seconds at 250.degree. C. It can be adhesion promoted for adherent electroless metal deposition with a chromic acid adhesion promotion solution. The coating composition comprises the product of reacting between 20 to 60% of a poly(vinyl acetal) resin with 80 to 40% of a phenolic resin in the presence of an acidic catalyst and a coupling agent having at least two amino substituted aromatic groups covalently bonded to a titanium or zirconium central atom via an oxygen containing linkage. The coating composition is applied to a metallic oxide film on the surface of the copper substrate.

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patent: 4816086 (1989-03-01), Oleske

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