POLYCARBONATE COMPOSITIONS CONTAINING CONVERSIONS MATERIAL CHEMISTRY AND HAVING ENHANCED OPTICAL PROPERTIES METHODS OF MAKING AND ARTICLES COMPRISING THE SAME

摘要

In some embodiments, the composition comprises bisphenol-A polycarbonate, the molded article of bisphenol-A polycarbonate has a transmittance of 90.0% or greater, measured at 2.5 mm thickness in accordance with ASTM D1003-00, and ASTM D1925 The yellow index (YI) measured according to the following formula is not more than 1.5. In some embodiments, the light emitting device includes a light source located in the housing. The housing is formed from a plastic composition comprising a polycarbonate composition and a conversion material. After the conversion material is exposed to the excitation source, upon removal of the excitation source, the emission life of the conversion material is less than 10 ^-4 seconds.