Foamable composition containing unsaturated perfluorochemical blowing agent
US5539008A · kind A · utility
23Cited by
23References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1993 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Dec 29, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/149
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Foamable compositions comprise (a) at least one normally liquid, unsaturated perfluorochemical blowing agent compound selected from the group consisting of perfluoroolefin compounds, e.g., perfluoro(4-methylpent-2-ene), perfluoroaromatic compounds, e.g., hexafluorobenzene, and perfluorocycloolefin compounds, e.g., perfluorocyclohexene, the perfluoroolefin compounds optionally containing one or more catenary heteroatoms; and (b) at least one foamable polymer or the precursors of at least one foamable polymer. The compositions are useful in preparing polymeric, e.g., polyurethane, foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.