HFCO-containing isocyanate-reactive compositions, polyurethane foams formed therefrom, and composite articles that include such foams
US11932761B2 · kind B2 · utility
1Cited by
10References
15Claims
0Family size
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Key dates
| Filing date | Feb 8, 2021 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Oct 28, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Isocyanate-reactive compositions, rigid polyurethane foam-forming compositions, rigid polyurethane foams, and methods for their production, and composite articles having a rigid polyurethane foam sandwiched between metal facer substrates. The rigid polyurethane foams are produced from an isocyanate-reactive composition comprising: (1) a polyol blend that includes an amine-initiated polyether polyol; (2) a hydrochlorofluoroolefin (“HCFO”); and (3) a catalyst that includes an arylalkyl tertiary amine, an aryl tertiary amine, or a mixture thereof. The foam can have excellent adhesion to metal substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.