Two-component polyurethane or polyisocyanurate spray foam composition containing a hydrohaloolefin blowing agent
US11820877B2 · kind B2 · utility
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1References
12Claims
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Key dates
| Filing date | Mar 11, 2020 |
| Grant date | Nov 21, 2023 |
| Priority date | — |
| Expiry date | Jan 16, 2042 |
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 catalyst; and (b) a B-side component comprising one or more polyol; and further comprising one or more hydrohaloolefin blowing agent in either the A-side component or the B-side component, or in both; wherein both the A-side component and the B-side component, separately, generate less than 600 ppm of fluoride ion after two weeks of aging at 50° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.