Patent ID: 9081281
Filing Date: 2015-07-14
Classification: G03F

Abstract:
1. A method for forming a pattern in a polymeric layer, the method comprising: providing a polymeric layer comprising a reactive composition that comprises a reactive polymer that comprises (1) pendant groups that are capable of providing pendant sulfonic acid groups upon exposure of the reactive polymer to radiation having a λ patternwise exposing the polymeric layer to radiation having a λ contacting the exposed regions of the polymeric layer with a reducing agent to incorporate reducing agent in the exposed regions of the polymeric layer, contacting the exposed regions of the polymeric layer with electroless seed metal ions to oxidize the reducing agent in the exposed regions of the polymeric layer and to form corresponding electroless seed metal nuclei in the exposed regions of the polymeric layer, and electrolessly plating the corresponding electroless seed metal nuclei in the exposed regions of the polymeric layer with a metal that is the same as or different from the corresponding electroless seed metal nuclei, the -B- recurring units comprise the (2) pendant groups that can provide crosslinking upon generation of the pendant aromatic sulfonic acid groups in the -A- recurring units, the -B- recurring units being present in an amount of at least 2 mol % and up to and including 75 mol % based on total reactive polymer recurring units.