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US 2011/0034660 A1Published application
Polymerizable composition for optical material, optical material, and method for producing optical material
AssigneeMitsui Chemicals, Inc.
InventorsAkinori RYU, Seiichi Kobayashi
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Abstract
A polymerizable composition for an optical material containing tolylene diisocyanate, an aliphatic polyisocyanate having 4 to 8 carbon atoms and one or more polythiols selected from pentaerythritol tetrakismercaptoacetate and pentaerythritol tetrakismercaptopropionate, is provided.
Claims6
A polymerizable composition for an optical material comprising tolylene diisocyanate, an aliphatic polyisocyanate having 4 to 8 carbon atoms and one or more polythiols selected from pentaerythritol tetrakismercaptoacetate and pentaerythritol tetrakismercaptopropionate.
Dependencies are inferred from the claim text.