Fire resistant glazing
First Claim
1. A transparent fire resistant glazing comprising an intumescent interlayer sandwiched between two opposed glass panes, wherein the intumescent interlayer comprises an alkali metal silicate mixed with a foam improvement additive, wherein the foam improvement additive comprises a polymer and/or oligomer and/or salts thereof, wherein said polymer, oligomer and/or salts thereof each contain at least one organic moiety having at least one hydrogen-bondable functional group covalently attached thereto, and wherein the additive is polymerised in-situ.
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Accused Products
Abstract
A transparent fire resistant glazing comprising an intumescent interlayer, wherein the intumescent interlayer comprises an alkali metal silicate and a foam improvement additive, wherein the foam improvement additive comprises a polymer and/or oligomer and/or salts thereof, wherein said polymer, oligomer and/or salts thereof each contain at least one organic moiety having at least one hydrogen-bondable functional group covalently attached thereto.
9 Citations
17 Claims
- 1. A transparent fire resistant glazing comprising an intumescent interlayer sandwiched between two opposed glass panes, wherein the intumescent interlayer comprises an alkali metal silicate mixed with a foam improvement additive, wherein the foam improvement additive comprises a polymer and/or oligomer and/or salts thereof, wherein said polymer, oligomer and/or salts thereof each contain at least one organic moiety having at least one hydrogen-bondable functional group covalently attached thereto, and wherein the additive is polymerised in-situ.
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16. A process for the production of transparent fire resistant glazing, the process comprising,
a) providing two opposed glass panes, b) providing an aqueous solution of an alkali metal silicate and at least one foam improvement additive between and in contact with the two opposed glass panes, and c) polymerising the foam improvement additive in-situ to form a polymer and/or oligomer and/or salts thereof, wherein said polymer, oligomer and/or salts thereof each contain at least one organic moiety having at least one hydrogen-bondable functional group covalently attached thereto.
Specification