Fireproof glasswork
US3997700A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1974 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Mar 28, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3163
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a fire screening glazing panel and a method for forming the panel. The panel is composed of at least two structural plies, at least one of which is a vitreous sheet, and a layer therebetween composed at least in part of a heat convertible barrier forming material, which material forms a solid porous or cellular thermally insulating body when subjected to sufficient heat, as during a fire. The barrier forming material is an hydrated metal salt selected from the group consisting of aluminates, plumbates, stannates, alums, borates, and phosphates. The barrier forming material does not significantly reduce the transparency of the structural sheets, if they are transparent, even over extended use during normal conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.