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US4082427A High refractive index glass compositions 失效
高折射率玻璃组合物

High refractive index glass compositions
摘要:
Disclosed are glass compositions that are particularly suited for making colorless and transparent reflex-reflective glass beads with refractive indices over 2.15. These lead-free glass compositions are made with TiO.sub.2 as the main constituent mixed with alkaline earth oxides and alkaline metal oxides, etc.
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