Process for producing plastic lens
AssigneeNippon Sheet Glass Co., Ltd.
InventorsShoji Mase, Noboru Otani, Motoaki Yoshida
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Abstract
A process for producing a plastic lens, which comprises: (1) applying a primer coating composition composed mainly from a blocked polyisocyanate and a polyol onto a surface of a plastic lens substrate and heating the primer coating composition to form a primer layer of a thermoset polyurethane, the blocked polyisocyanate being a polyisocyanate blocked with a .beta.-diketone, (2) forming a hard coating layer on the primer layer, and (3) vapor-depositing an inorganic material or inorganic materials on the hard coating layer to form a single-layered or multi-layered anti-reflection coating.
Claims6
A process for producing a plastic lens, which comprises;
- (1) applying a primer coating composition composed mainly from a blocked polyisocyanate and a polyol onto a surface of a plastic lens substrate and heating the primer coating composition to form a primer layer of a thermoset polyurethane, the blocked polyisocyanate being a polyisocyanate blocked with a .beta.-diketone,
- (2) forming a hard coating layer on the primer layer from a silicon-based resin and
- (3) vapor-depositing an inorganic material or inorganic materials on the hard coating layer to form a single-layered or multi-layered anti-reflection coating.
Dependencies are inferred from the claim text.