Patent ID: 6208452
Filing Date: 2001-03-27
Classification: C09K,G02F

Abstract:
An electrochromic device which has an ion conductive layer obtained by curing a composition comprising (a) a bipyridinium compound represented by formula (1), (b) an amine compound represented by formula (2) and/or (3) and (c) a precursor component of a polymeric solid electrolyte, disposed between two electrically conductive substrates at least one of which is transparent, said formula (1) being ##STR48##wherein X-- and Y-- are the same or different and are each independently a counter anion selected from the group consisting of an halogen anion, CIO.sub.4 --, BF.sub.4 --, PF.sub.6 --, CH.sub.3 COO-- and CH.sub.3 (C.sub.6 H.sub.4)SO.sub.3 --, R.sup.1 is hydrogen or a C.sub.1 -C.sub.5 alkyl group, R.sup.2 is a C.sub.1 -C.sub.30 divalent hydrocarbon or oxygen-containing hydrocarbon group, R.sup.3 is a C.sub.1 -C.sub.20 hydrocarbon or oxygen-containing hydrocarbon group and a is an integer of 0 or 1; said formula (2) being ##STR49##wherein R.sup.4 is hydrogen or a C.sub.1 -C.sub.5 alkyl group, R.sup.5 is a C.sub.1 -C.sub.15 hydrocarbon or oxygen-containing hydrocarbon group, b is an integer of 0 or 1, R.sup.6 and R.sup.7 are the same or different and are each independently hydrogen or a C.sub.1 -C.sub.20 hydrocarbon or oxygen-containing hydrocarbon group, R.sup.8 is hydrogen or a C.sub.1 -C.sub.20 hydrocarbon or oxygen-containing hydrocarbon group and Ar.sup.1 is a C.sub.6 -C.sub.20 divalent aromatic hydrocarbon group; and said formula (3) being ##STR50##wherein R.sup.9 is hydrogen or a C.sub.1 -C.sub.5 alkyl group, R.sup.10 is a C.sub.1 -C.sub.15 hydrocarbon or oxygen-containing hydrocarbon group, c is an integer of 0 or 1, R.sup.11 and R.sup.12 are the same or different and are each independently hydrogen or a C.sub.1 -C.sub.20 hydrocarbon or oxygen-containing hydrocarbon group and R.sup.13 is hydrogen or a C.sub.1 -C.sub.20 hydrocarbon or oxygen-containing hydrocarbon group.