Abstract: A solid ion conductor material is made from branched polyethylene imine and a lithium cation salt in such a manner that the ratio of the number of nitrogen atoms contained in the polymer to the number of lithium cations originating from the salt is optimized. The branched polyethylene imine can be plasticized within a certain proportionate range of plasticizer. This type of material is used as electrolyte, notably in electrochromic systems.

Abstract: A method for forming an electrochromic glazing system which comprises means to reduce and preferably eliminate all trapped air from the system so as to avoid the formation of undesirable air bubbles trapped therein. The method comprises coating at least a portion of an inner surface of a first glass support sheet with a transparent electroconductive layer, followed by a layer of an electrochromic material which serves as an electrode. A second glass support sheet is also coated upon its inner aspect with an electroconductive layer, upon which is coated a counterelectrode layer. Thereafter, an electrolyte layer is deposited upon either the electrochromic, i.e., electrode layer, or the counterelectrode layer. The two coated glass support plates thereafter are preassembled, that is, they are oriented one above the other with their uncoated surfaces facing outwardly such that their coated portions are adjacent, but not in contact, with each other.

Abstract: Materials possessing ionic conductivity which are suitable for use as electrolytes, notably in electrochromic systems, comprising an ionomer obtained by the neutralization of a Bronsted polyacid by an MOH alkali metal hydroxide, the neutralization rate .alpha. being such that 0<.alpha.<.alpha..sub.m, where .alpha..sub.m is the neutralization rate beyond which a phase separation takes place. The ionomer comprises a polymeric chain having a plurality of anionic groups affixed thereto and a plurality of alkaline cations associated therewith. The material further comprises a polar solvent, capable of solubilizing or plasticizing the ionomer and of assuring a partial ionic diassociation as well as transporting the M.sup.+ ions. Optionally, this material may comprise, in addition to the above, a Bronsted polybase soluble in the polar solvent which does not form a solid precipitate with the ionomer and an MX inorganic salt wherein M.sup.