Patent ID: 6159606
Filing Date: 2000-12-12
Classification: B32B,C09K,Y10T

Abstract:
Fire-resistant glazing panel comprising at least two glass sheets, between which is placed a transparent fire-resistant layer made of a cured alkali metal polysilicate hydrate having an SiO.sub.2 :M.sub.2 O ratio of at least 3:1 (where M denotes at least one alkali metal) and a water content of 25 to 60% by weight, in which glazing panel at least one glass sheet is provided, on its surface which is in contact with the polysilicate layer, with a layer of primer which has an influence on the adhesion, wherein the said at least one glass surface which is in contact with the polysilicate layer is provided with a primer layer, the adhesion of which to the fire-resistant layer decreases at the temperatures of the test of behaviour towards fire.