Polycarbonate copolymer, resin composition, and molded article
US7244804B2 · kind B2 · utility
10Cited by
0References
26Claims
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Key dates
| Filing date | Nov 13, 2003 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Nov 23, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There are provided a polycarbonate copolymer (A) which has excellent light resistance and heat resistance and comprises an aromatic dihydroxy component comprising 5 to 95 mol % of fluorene-skeleton-containing dihydroxy compound (1) having a specific structure and 95 to 5 mol % of ordinary bisphenol type dihydroxy compound (2), the content of fluorene-9-one in the copolymer being not higher than 15 ppm; and a polycarbonate composition comprising 0.01 to 5 parts by weight of ultraviolet absorber (B) based on 100 parts by weight of the copolymer (A), and the composition comprising the copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.