Cyclopentadiene-containing cyclic polycarbonate oligomer
US4855380A · kind A · utility
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Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel linear aromatic polycarbonate oligomers that contain one or more dicyclopentadiene dicarboxylate diradicals are described. These oligomers are prepared by the reaction of a cyclic aromatic polycarbonate oligomer with an alkali metal or magensium salt of a cyclopentadiene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.