Polyester polyol and polyol blends and rigid polyurethane foam manufacturing
US9758614B2 · kind B2 · utility
1Cited by
13References
10Claims
0Family size
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Key dates
| Filing date | Sep 20, 2014 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Sep 20, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester polyol is formed in a polycondensation reaction between an aromatic dicarboxylic acid, a polyol, and an epoxy compound having a straight chain alkyl or alkenyl group having at least six carbon atoms. The polyester polyol exhibits excellent compatibility with hydrocarbon blowing agents. As such, it is a useful component in rigid polyurethane foam formulations that are contain hydrocarbon blowing agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.