Patent ID: 7108795
Filing Date: 2006-09-19
Classification: B32B,C23C,C23F,H05K

Abstract:
1. A process for preparing roughened copper surfaces suitable for subsequent multilayer lamination, said process comprising the steps of: contacting with a copper surface an adhesion promoting composition under conditions effective to provide a roughened copper surface, said adhesion promoting composition comprising an oxidizer, a pH adjuster, and a topography modifier; contacting said roughened copper surface with an acid resistance promoting composition selected from the group consisting of sodium dioctyldithiocarbamate, disodium trithiocarbonate, sodium sulfide, sodium N,N-dibutyldithiocarbamate and sodium hydroquinone monomethyl ether xanthate; and contacting said roughened copper surface with a post-dip solution, said post-dip solution comprising an azole or silane.