Open and closed cell polyurea foams
US9725897B2 · kind B2 · utility
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34Claims
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Key dates
| Filing date | Mar 18, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | May 9, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An open cell spray polyurea foam for use in an insulation layer in a wall structure may include a polyurea. The polyurea may be a reaction product of an isocyanate compound and water. The open spray polyurea foam may also include a filler. The majority of the filler may exist in the spray foam formulation as an unreacted first fire retardant. The spray foam formulation may further comprise a second fire retardant, and the insulation layer may exhibit a fire retardancy sufficient to pass Appendix X and/or ASTM E-84.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.