Polyol(allyl carbonate) compositions and polymerizates prepared therefrom
US5017666A · kind A · utility
8Cited by
20References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1988 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Feb 26, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F263/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyol (allyl carbonate), e.g., diethylene glycol bis(allyl carbonate), are polymerized in solution, i.e., in an organic solvent, until from about 20 to 50 percent of the allylic carbon-carbon linkages are consumed. The solvent is then removed yielding a product that is a gel-free, syrupy viscous liquid of unpolymerized monomer and polymer. This liquid polymer can be polymerized to a hard, transparent material with less shrinkage. Also described is the addition of mono- or polyfunctional acrylates to the liquid polymer to product a polymerizable mixture that can be cured quickly with the addition of a free-radical initiator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.