Yoshinobu Kanemura

Resin for high-refractivity lenses and lenses made of same resin

A mercapto compound, a high refractive index resin and lens and a process for preparing them

High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol

Casting epoxy resin, polythiol and releasing agent to form lens

Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens

Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur-containing urethane resin lens and lens prepared thereby

Novel polythiol and sulfur-containing urethane plastic lens using the same

Resin for high-refractive index plastic lens

High-refractivity plastic lens resin

S-alkyl thiocarbamate base resin, plastic lens comprising the resin, and process for making the lens