Method for preparing low density polyurethanes using catalysts that are free from tertiary amines and tin
US12258435B1 · kind B1 · utility
0Cited by
8References
5Claims
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Key dates
| Filing date | Nov 4, 2024 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | Nov 4, 2044 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a method for preparing a soft, water blown, polyurethane foam product, or microcellular elastomer using a stable, liquid, tertiary amine and tin-free polyurethane catalyst. The catalyst contains a combination of bismuth and sodium carboxylates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.