Process for coating at least one surface of a polyimide sheet wi

Details Process for coating at least one surface of a polyimide sheet wi Process for coating at least one surface of a polyimide sheet wi

1987-07-30

1989-05-23

Lawrence, Evan

Chemistry: electrical and wave energy

Processes and products

204 30, 204 384, 427306, 427307, C25D 556, B05D 310

Patent

active

048327999

ABSTRACT:
At least one surface of a polyimide sheet surface is coated with copper in the absence of an adhesive. The polyimide surface is treated with a one phase aqueous solution comprising an alkylene diamine; an alkali metal hydroxide and a water miscible alcohol to render the surface uniformly and substantially completely textured. The treated surface then is treated with a catalyst, coated with cobalt or nickel and then coated with copper. The laminate produced passes the IPC tests for peel strength and solder float.

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