Patent ID: 8592003

Claim:
Method for preparation of a electrochromic coating material comprising: a) reaction of a solution comprising a mixture of a compound having the general formula I and a compound having the general formula II in a molar ratio of I:II which is equal to m:(100−m) wherein m has a value from 60 to 99 with a compound of the general formula III wherein X is selected from the group consisting of Y—, Y—C(O)— or OCN— in which Y is selected from the groups of halides, mesylates and or triflates, R is a linear and/or branched alkylene chain with 1 to 16 carbon atoms, and A is a linear and/or branched alkyl chain with 1 to 16 carbon atoms or hydrogen b) further reacting the mixture of compounds derived from step a) by either b1) a vinyl copolymerisation b2) a hydrosilylation of the vinyl moiety with a silane of the general formula HSiR′ u (R″) 3-u , wherein R′ is selected from the group consisting of linear or branched alkyl or alkenyl chains with 1 to 12 carbon atoms in the main-chain, wherein the chains can be substituted with acryloxy-, methacryloxy-, succinyl-, amino-, hydroxyl-, mercapto-, and/or glycidoxygroups and/or interrupted by O- and/or S-atoms and/or a NR-group, R″ is selected from the group consisting of halogens, hydroxyl-groups, alkoxy-groups and/or acyl groups with 1 to 4 carbon atoms, and u=0, 1, 2, 3; and further b3) a thiol-ene addition to the vinyl moiety with a compound of the general formula HS—R—SiR′ u (R″) 3-u , wherein R, R′, R″ and u have the same meaning as indicated above; c) in-situ chemical oxidative polymerisation of a solution of the compound and/or the compounds derived from step b).