The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 1989
Filed:
Nov. 27, 1987
Francois Toussaint, Montignies-le-Tilleul, BE;
Pierre Goelff, Nalinnes, BE;
Glaverbel, Brussels, BE;
Abstract
A transparent fire-screening glazing panel has at least one solid intumescent layer comprising a hydrated alkali metal silicate and at least one sheet of glazing material, and the layer of intumescent material contains at least one silicate-stabilizing agent. Suitable stabilizing compounds include at least partially dissociated nitrogenized organic compounds, especially quaternary ammonium compounds such as tetramethylammonium hydroxide. To manufacture such a panel, the silicate-stabilizing agent may be incorporated into an aqueous solution of the intumescent material which is then hardened by drying to form the layer. Alternatively, the silicate-stabilizing agent may be incorporated into an aqueous solution of the intumescent material which is then dried to form grains which are subsequently incorporated into a layer held sandwiched between two sheets of glazing material.