Patent · US Expired

Fire protection glazing, method for producing the same and material used in this production method

US6818267B1 · kind B1 · utility

0Cited by

4References

16Claims

0Family size

Assignee

Vetrotech Saint-Gobain (International) AG · CH

Inventors

Udo Gelderie · Stolberg, DE
Simon Frommelt · Haan, DE

Key dates

Filing date	Aug 23, 2002
Grant date	Nov 16, 2004
Priority date	—
Expiry date	Aug 23, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2205/02
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A glazing assembly for protecting against fire exhibits at least two panes adhesively bonded together via a spacer and a water-comprising intermediate layer which fills the intermediate space between the panes. The spacer is composed of a string, applied by extrusion over the peripheral region of a pane, made of a butyl polymer obtained from 40 to 65% by weight of polyisobutylene, from 10 to 25% by weight of carbon black and from 10 to 40% by weight of filler. Within these ranges, the composition is chosen so that the butyl polymer exhibits, at a temperature of 80° C., a transverse or shear modulus of elasticity of G* of 1.2 to 2.2 MPa.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.