Fire-break caulking and filling device
US9908965B2 · kind B2 · utility
2Cited by
4References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 27, 2009 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | May 28, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a caulking or filling device having fire-break properties and made of an elastic material comprising polyurethane foam. The foam is obtained by reacting at least one polyol having a molecular weight of 4000 to 7000 g/mol and an OH index of 20 to 40 (mg KOH/g), and an isocyanate in the form of a prepolymer or quasi-prepolymer comprising between 5 and 25% of free NCO functions.The elastic material comprises at least 50 wt % of flame-retarding agents. The invention also relates to the use of the device for making seals or fillings having fire-stopping characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.