Plastic polarized lens and method of producing the same

A method of producing a plastic polarized lens, comprising:

• forming a coat layer containing a urethane-based resin comprised of a structural unit derived from polybutadiene having a hydroxyl group on the terminal and a structural unit derived from diphenylmethane diisocyanate, over at least one surface of a polarized film containing thermoplastic polyester;
• fixing the coat layer-attached polarized film into a lens casting mold, in a state separated from an inner surface of the mold;
• injecting a monomer mixture into a gap between at least the coat layer and the inner surface of the mold;
• and
• stacking a substrate layer containing a thiourethane-based resin over at least the coat layer by polymerizing and curing the monomer mixture,
• wherein the thiourethane-based resin is prepared by reacting an isocyanate compound with an active hydrogen compound,
• wherein the isocyanate compound is at least one of compounds selected from a group consisting of m-xylylene diisocyanate, 2,5-bis(isocyanatomethyl)-bicyclo[2.2.1]-heptane, and 2,6-bis(isocyanatomethyl)-bicyclo[2.2.1]-heptane, and
• the active hydrogen compound is at least one of compounds selected from a group consisting of pentaerythritol tetrakis(3-mercaptopropionate), 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, and 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane.