Polyoxazolidones derived from bisanhydrohexitols
US7947785B2 · kind B2 · utility
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8References
5Claims
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Key dates
| Filing date | May 21, 2009 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Feb 3, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/758
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a method for preparing polyoxazolidones wherein an ether of a bisanhydrohexitol is reacted with a diisocyanate under conditions which form polyoxazolidones. Preferred bisanhydrohexitols include isoidide, isomannide and isosorbide. The polyoxazolidones are highly crosslinked, rigid, and have high solvent resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.