| abstract |
ABSTRACT OF THE DISCLOSURE A lens having a high refractive index with a low dispersion produced by copolymerizing polyfunctional allyl monomer with at least one selected from the monomer group represented by the general formula A: ...... A X : H, CH3, C? Y: H, CH3, C2H5, n-C3H7, iso-C3H7- OCH3, C6H11' C?, Br, CH2C? CH2Br, C6H5, CH2C6H5' SCH3 m - 0, 1, 2 n - 0, 1, 2, 3, 4, 5. This lens is excellent in its transmittance, pencil hardness, impact resistance, dyeability, coating adhesion, solvent resistance, workability, etc. |