Patent ID: 6657768
Filing Date: 2003-12-02
Classification: C09K,G02F,Y10T

Abstract:
An electrochromic device comprising an ion conductive layer obtained by curing a composition containing (A) a bipyridinium compound represented by formula (1), (B) a metallocene compound represented by formula (2) or (2â€²) and (C) a precursor of a polymeric solid electrolyte comprising a monofunctional modified polyalkylene oxide represented by formula (12), a polymeric monomer selected from the group consisting of a difunctional modified polyalkylene oxide represented by formula (13) and a polyfunctional modified polyalkylene oxide represented by formula (14), and a supporting electrolyte, disposed between two electrically conductive substrates at least one of which is transparent, said formula (1) being wherein X- and Y- are the same or different and are each independently a counter anion selected from the group consisting of au halogen anion, ClO4âˆ’, BF4âˆ’, PF6âˆ’, CH3COOâˆ’ and CH3(C6H4)SO3âˆ’, R1 is hydrogen or a C1-C5 alkyl group, R2 is a C1-C30 divalent hydrocarbon group or oxygen-containing hydrocarbon group, R3 is a C1-C20 hydrocarbon or oxygen-containing hydrocarbon group and a is an integer of 0 or 1; said formulae (2) and (2â€²) being wherein R4 and R5 are each independently a hydrocarbon group selected from the group consisting of alkenyl and aryl groups, if R4 or R5 is an aryl group, the aromatic ring may form a condensation ring by bonding to a cyclopentadienyl ring, n1 is an integer of 0&lE;n1&lE;4, n2 is an integer of 0&lE;n2&lE;5, but at least one of n1 and n2 is &gE;1, A and Aâ€² are the same or different and are each independently a monovalent group, in is 0 or 1, M is selected from the group consisting of Cr, Go, Fe, Mg, Ni, Os, Ru and V, Mâ€² is selected from the group consisting of Hf, Mo, Nb, Ti, V and Zr and Q and Qâ€² are the same or different and each are independently selected from the group consisting of hydrogen, halogen and a C1-C12 alkyl group; said formula (A) being wherein R6 is hydrogen or a methyl group, R7 is hydrogen or at methyl group, b is 0 or 1 and provided that R7 is hydrogen if b is 0; said formula (12) being wherein R33, R34, R35 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, R36 is an alkyl group having 1 to 5 carbon atoms, and gâ€² is an integer of 1 or greater; said formula (13) being wherein R37, R38, R39 and R40 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms and hâ€² is an integer of 1 or greater; and said formula (14) being wherein R41, R42 and R43 are each independently hydrogen or an alkyl group having 1 to 5 carbon atoms, iâ€² is an integer of 1 or greater than 1, jâ€² is an integer of 2 to 4 and L is a connecting group of valence of â€œjâ€²â€ .