Aromatic polycarbonate composition
US6448365B1 · kind B1 · utility
10Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2001 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Nov 8, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/52
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aromatic polycarbonate composition which contains 0.05 to 65 ppm of bonded phosphorus atoms to polycarbonate chains and free phosphorus compounds consisting of a tervalent phosphorus compound and a pentavalent phosphorus compound in a specific ratio. It is excellent in transparency, color stability and residence stability at the time of molding and is suitably used in disk substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.