Polyurethane-base material suitable for use for making fire arresting walls
US4370445A · kind A · utility
2Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1980 |
| Grant date | Jan 25, 1983 |
| Priority date | — |
| Expiry date | Nov 13, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/52
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention concerns a material having good resistance to mechanical stresses and heat and in particular having substantial resistance to the penetration of a directed flame such as the pointed flame of a blowpipe. The material comprises a substance which can be polymerized such as a polyurethane, sulfur, and possibly halogenated compounds, phosphorus-bearing compounds, phosphohalogenated compounds, trivalent antimony oxide, solid or liquid fillers and pigments. The material may be used for the production of strong walls, in particular by filling internal cavities of armoured doors, walls of strong rooms or safes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.