Rigid polyurethane foam and system and method for making the same
US9238721B2 · kind B2 · utility
2Cited by
21References
20Claims
0Family size
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Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Dec 10, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An embodiment of a closed-cell polymeric rigid foam may be made using a one-shot method and a reaction system that includes a hydrofluoroalkene physical blowing agent and a polyol mixture having an aminic polyol. The hydrofluoroalkene blowing agent has 3 to 5 carbon atoms and a boiling point between 10° C. and 40° C. at 1 atmosphere pressure. Embodiments of rigid foams may have high closed cell content and are particularly well suited for thermal insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.