| abstract |
The present invention relates to a process for producing a plastic lens having a high refractive index and profile regularity comprising forming a mixture of one or more sulfur-containing aromatic polyisocyanate compounds, one or more active hydrogen compounds selected from polyol compounds and polythiol compounds, and at least one internal mold releasing agent, and subjecting the resulting mixture to casting polymerization; and to a plastic lens as obtained according to the process. |