Flame-retardant polyurethane foam
US11674010B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jan 25, 2022 |
| Grant date | Jun 13, 2023 |
| Priority date | — |
| Expiry date | Jan 25, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.