Process for producing plastic lens comprising a primer layer, a hard coat layer and an antireflection coating
First Claim
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1. A process for producing a plastic lens which comprises the steps of:
- providing a primer layer which has a thickness of from 0.05 to 5 μ
m and which improves the impact resistance of the plastic lens, which primer layer comprises a thermosetting polyurethane on the surface of a plastic lens substrate;
subsequently providing a hard coat layer comprising a silicone resin on the surface of said primer layer; and
then providing a single-layer or multi-layer anti-reflection coating on the surface of said hard coat layer by depositing an inorganic material,wherein said primer layer which comprises a thermosetting polyurethane is provided by the steps of coating said plastic lens substrate with a primer coating composition comprising a blocked polyisocyanate and a polyester polyol, and then curing the coated composition by heating.
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Abstract
A process for producing a plastic lens is disclosed, which comprises the steps of: providing a primer layer comprising a polyurethane on the surface of a plastic lens substrate; subsequently providing a hard coat layer comprising a silicone resin on the surface of the primer layer; and then providing a single-layer or multi-layer anti-reflection coating on the surface of the hard coat layer by depositing an inorganic material, wherein the polyurethane used for providing the primer layer is a thermosetting polyurethane.
75 Citations
1 Claim
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1. A process for producing a plastic lens which comprises the steps of:
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providing a primer layer which has a thickness of from 0.05 to 5 μ
m and which improves the impact resistance of the plastic lens, which primer layer comprises a thermosetting polyurethane on the surface of a plastic lens substrate;subsequently providing a hard coat layer comprising a silicone resin on the surface of said primer layer; and then providing a single-layer or multi-layer anti-reflection coating on the surface of said hard coat layer by depositing an inorganic material, wherein said primer layer which comprises a thermosetting polyurethane is provided by the steps of coating said plastic lens substrate with a primer coating composition comprising a blocked polyisocyanate and a polyester polyol, and then curing the coated composition by heating.
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Specification
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Current AssigneeNippon Sheet Glass Company Limited
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Original AssigneeNippon Sheet Glass Company Limited
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InventorsOtani, Noboru, Yoshida, Motoaki, Mase, Shoji
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Primary Examiner(s)BELL, JANYCE A
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Application NumberUS08/515,935Time in Patent Office839 DaysField of Search427/164, 427/385.5, 427/387, 427/397.7, 427/168, 427/169, 427/407.1, 427/412.1, 427/412.5, 427/419.2US Class Current427/164CPC Class CodesG02B 1/111 using layers comprising org...
