Imidazole derivative-catalyzed polyurethane formulations based on hydroxylated polybutadiene
US6572729B1 · kind B1 · utility
3Cited by
4References
10Claims
0Family size
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Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3445
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyurethane formulations based on hydroxylated polybutadiene are catalyzed by an N-substituted imidazole derivative. This type of catalysis advantageously replaces the conventional catalysts based on mercury salt. The catalysis does not pose an environmental problem and allows a particular increase in viscosity, permitting an extended pot life and rapid setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.