Patent ID: 9718935
Date: 2017-08-01
CPC Classifications: B05D,C08F,C08G,C08J,C09D,G03F,H01B,H05K

Claim:
1. A method for providing an electrically-conductive polyaniline pattern, the method comprising: providing a pattern of a photocurable composition on a supporting side of a substrate, the photocurable composition comprising a water-soluble reactive polymer comprising (a) greater than 40 mol % of recurring units comprising sulfonic acid or sulfonate groups, (b) at least 5 mol % of recurring units comprising a pendant group capable of crosslinking via [2+2] photocycloaddition, and optionally (c) at least 1 mol % of recurring units comprising a pendant amide, hydroxyl, lactam, phosphonic acid, phosphonate, carboxylic acid, or carboxylate group, all amounts based on the total recurring units in the water-soluble reactive polymer; exposing the pattern of the photocurable composition to radiation sufficient to cause crosslinking via [2+2] photocycloaddition of the (b) recurring units to form a pattern of crosslinked polymer; optionally rinsing the pattern of crosslinked polymer; optionally, contacting the crosslinked polymer with metal ion catalyst for aniline oxidation, followed by rinsing the crosslinked polymer, and contacting the crosslinked polymer with an aniline reactive composition comprising an aniline monomer and up to 0.5 molar of an aniline oxidizing agent, in a molar ratio of from 1:0.5 to 1:1.5 of the aniline monomer to the aniline oxidizing agent, thereby forming a pattern of electrically-conductive polyaniline disposed either within, on top of, or both within and on top of, the crosslinked polymer only.