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Qianyuan super  moderate-refractive-index 1.56 monomers Methyl methacrylate (MMA) monomers are easy molding. Lenses have high light transmittance and high Abbe number. Monomer Properties Appearance colorless transparent liquid Viscosity (CPS/25℃ ) 25± 5 Density (g/cm3) 1.049 Refractive Index (nE25) 1.512 ± 0.003 Color (APHA ) 30 Lens Properties Refractive Index (nE25) 1.553 Abbe Number (vE20) 42.0 Density (g/cm3, 25 ℃) 1.157 Volume Shrinkage (%) 8.9 Transparency (%) ≥ 90 Glass Transition Temp. (℃) 105 |
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