Plastic lenses and primer composition used for coating the same
AssigneeNippon Arc Co., Ltd.
InventorsHisayuki Kayanoki, Fujio Sawaragi
Life of this patent
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Abstract
A plastic lens having a primer layer made from a polyurethane resin obtained through a reaction between a polyester polyol containing isophthalic acid as a main component and a polyisocyanate. A plastic lens having excellent resistance to scratch and impact resistance can be obtained by further forming a hard-coat layer and an anti-reflection layer on the primer layer.
Claims15
A plastic lens having a plastic lens substrate, a polyurethane layer formed on at least one side of the substrate and a silicon resin hard coat layer on the polyurethane layer, said polyurethane layer being a cured product of a primer comprising a polyol which consists essentially of a polyester polyol, said polyester polyol containing, as an acid component, isophthalic acid in an amount of 50 to 100 mol % based on the total of all acid components and other dicarboxylic acid in an amount of 0 to 50 mol % based on the total of all acid components, and a polyisocyanate.
Dependencies are inferred from the claim text.