Two-component polyurethane or polyisocyanurate low pressure spray foam composition containing a gaseous blowing agent comprising pressurized carbon dioxide
US11999835B2 · kind B2 · utility
0Cited by
2References
20Claims
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Key dates
| Filing date | Apr 11, 2023 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Apr 11, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Storage-stable two-component polyurethane or polyisocyanurate spray foam compositions are disclosed, said compositions comprising: (a) an A-side component comprising one or more polyisocyanate and one or more blowing agent; and (b) a B-side component comprising one or more polyol and one or more blowing agent comprising pressurized gaseous carbon dioxide and one or more liquid blowing agent; wherein both the A-side component and the B-side component, separately, generate less than 300 ppm of fluoride ion after one week of aging at 50° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.