Storage stable HFO- or HCFO-containing polyol compositions for making flame-resistant rigid polyurethane foams
US12344700B2 · kind B2 · utility
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Key dates
| Filing date | Apr 27, 2020 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Apr 9, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Formulated polyol compositions include a non-halogenated polyol, a halogenated polyol, a phosphorus-containing flame retardant, an HFO and/or HCFO blowing agent and certain urethane catalysts. The compositions exhibit excellent storage stability. Foams made from the formulated polyol compositions have unexpectedly improved fire performance, as indicated by certain fire tests.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.