Patent ID: 7518778
Filing Date: 2009-04-14
Classification: C09K,G02F

Abstract:
1. 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 and R R R R R and B) from 15 to 80 wt. % of an oligoether-containing repeating unit (VIII):  wherein R R R 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 in particular those of formula (X) wherein in particular R or A) from 10 to 50 wt. % of a non-functional repeating unit A) having the meanings indicated above for R 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 R and wherein m represents a natural number from 5 to 30.