Polycarbonate compositions containing conversion material chemistry and having enhanced optical properties, methods of making and articles comprising the same
US9299898B2 · kind B2 · utility
7Cited by
98References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2015 |
| Grant date | Mar 29, 2016 |
| Priority date | — |
| Expiry date | Jul 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In some embodiments, a composition includes: a conversion material and a bisphenol-A polycarbonate; wherein a molded article of the bisphenol-A polycarbonate has a transmission level of greater than or equal to 90.0% at a thickness of 2.5 mm as measured by ASTM D1003-00; and wherein the molded article comprises an increase in the yellow index of less than 2 during 2,000 hours of heat aging at 130° C.; and wherein the conversion material comprises a yellow conversion material, a green conversion material, a red conversion material, or a combination comprising at least one of the foregoing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.