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US 2011/0215493 A1Published application
Plastic polarized lens and method of producing the same
AssigneesMitsui Chemicals, Inc., Hopnic Laboratory Co., Ltd.
InventorsToru Miura, Yoshimitsu Aiiso
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Abstract
A method of producing a plastic polarized lens with excellent processability and the like by injecting a mixture of a specified isocyanate compound and a specified active hydrogen compound into a lens-forming mold wherein a polarized film containing a thermoplastic polyester is fixed, followed by polymerization and curing.
Claims6
A method of producing a plastic polarized lens, comprising:
- fixing a polarized film comprised of a thermoplastic polyester in a lens-forming mold in a state separated from an inner wall of said mold;
- injecting a mixture into a space between both surfaces of said polarized film and said inner wall of said mold;
- and
- stacking layers comprised of a thiourethane resin on both surfaces of said polarized film by polymerizing and curing said mixture,
- said mixture containing:
- (A) one kind or two or more kinds of isocyanate compounds selected from the group consisting of a polyisocyanate compound, an isocyanate compound having an isothiocyanate group and a polyisothiocyanate compound, and
- (B) one kind or two or more kinds of active hydrogen compounds selected from the group consisting of a thiol compound having a hydroxyl group and a polythiol compound.
4 more elements
Dependencies are inferred from the claim text.