Patent ID: 7518778

Claim:
Multi-layer electrochromic arrangement comprising at least a transparent covering substrate ( 1 ), a first electrode arrangement ( 2 ), a layer ( 3 ) adjacent thereto containing electrochromic material, a gel electrolyte layer ( 4 ) adjacent thereto, an ion storage layer ( 5 ) adjacent to layer ( 4 ), a second electrode arrangement ( 6 ) adjacent to layer ( 5 ), and a further substrate ( 7 ) that is transparent and/or provided with a mirrored surface, characterised in that the gel electrolyte layer contains one or more copolymers having the following repeating units: A) from 10 to 80 wt. % of a non-functional repeating unit selected from the group consisting of: wherein R 1 , R 2 , R 4 , R 5 independently of one another represent hydrogen or methyl, and R 3 represents C 1 - to C 18 -alkyl or C 1 - to C 4 -hydroxyalkyl, R 6 represents hydrogen or C 1 - to C 16 -alkyl, R 7 represents hydrogen or C 1 - to C 4 -alkyl, optionally branched, R 8 represents C 1 - to C 18 -alkyl, R 9 represents C 1 - to C 4 -alkyl, and B) from 15 to 80 wt. % of an oligoether-containing repeating unit (VIII): wherein R 10 represents hydrogen or methyl, R 11 represents hydrogen or methyl, preferably hydrogen, and R 12 represents C 1 - to C 18 -alkyl, C 7 - to C 30 -aralkyl, and n represents a natural number from 5 to 30, and C) from 5 to 50 wt. % of an anionic repeating unit neutralized completely or partially, in particular to the extent of at least 50%, with lithium, selected from the group: wherein R 13 , R 14 , R 15 independently of one another represent hydrogen or methyl, in particular those of formula (X) wherein in particular R 14 =hydrogen, or A) from 10 to 50 wt. % of a non-functional repeating unit A) having the meanings indicated above for R 1 to R 9 and D) from 50 to 90 wt. % of an oligoether-containing repeating unit of formula (XII) neutralized completely or partially, in particular to the extent of at least 50%, with lithium: wherein R 16 represents hydrogen or methyl, in particular hydrogen, R 17 represents a C 1 -C 4 -alkyl radical, preferably methyl, and wherein m represents a natural number from 5 to 30.