Copolycarbonate and composition containing the same
US9751979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2015 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Dec 4, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K21/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a polycarbonate composition including a polycarbonate; and a copolycarbonate, where the copolycarbonate includes an aromatic polycarbonate-based first repeating unit; and aromatic polycarbonate-based second repeating units having siloxane bonds, which include a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, where the copolycarbonate has a melt index (MI) of 3 to 9 g/10min as measured in accordance with ASTM D1238 (300° C., 1.2 kg conditions), and a transparency of 87 to 91% as measured in accordance with ASTM D1003 (layer thickness of 3 mm):The copolycarbonate in the composition exhibits an excellent transparency and a high spiral flow while having a high impact strength at room temperature and a low melt index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.