Saint-gobain Vitrage

Herve Arribart

Christian Padoy

Pascal Chartier

Francis Defendini

Bernard Buffat

Alain Dugast

Bernard Desbat

Veronique Reboul-Salze

Michel Armond

An electrochromic variable transmission glazing comprising first and second glass sheets substrates which are joined by an organic polymer whose proton conductivity is greater than or equal to 10.sup.-5 ohm.sup.-1 cm.sup.-1 at 20.degree. C. The glass sheets are coated on their joining faces with transparent electroconductive layers. The first transparent substrate further comprises a layer of electrochromic material, such as tungsten oxide, in contact with the proton conductive polymer. The glazing is characterized by an iridium oxide layer on the second transparent substrate which is interposed between the layer of electroconductive material and the organic polymer. The glazing further comprises a pair of current leads attached to the electroconductive layer which connect the glazing to a generator.

Electrochromic variable transmission glazing

The invention relates to an adhesive plastic layer used in laminated glazings, in particular as an intermediate layer. The plastic layer contains, radiochemically grafted onto at least one of its surfaces, monomer and/or oligomers of an unsaturated monomer, such as acrylic acid or salts of said monomer.

Adhesive layer used in the manufacture of laminated glazings, method of

The invention relates to coated glass substrates for obtaining a variable degree of light transmission therethrough. The coated substrate comprises successively, (1) a first transparent support plate, preferably formed of glass, (2) a transparent electroconductive layer, (3) a layer of an electrochromic material, (4) a proton conductive electrolytic layer having an organic polymer base, (4a) an optional counterelectrode layer, (5) a second electroconductive layer and (6) a second transparent support plate. A proton conductive polymer is selected for the electrolyte whose conductivity is greater than or equal to ##EQU1## wherein the layer has a thickness of less than 50 micrometers.

Variable transmission glazings and method of making same

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Soisy-sous-Montmorency, France

Herve Arribart