Polymerizable composition for optical article, optical article and eyeglasses

By using a specific combination of methacrylates and acrylates in optical articles, a photochromic layer with high color rendering concentration and good weather resistance is formed, solving the problems of insufficient color rendering concentration and poor solubility in the prior art, and is suitable for optical articles such as eyeglass lenses.

CN115335734BActive Publication Date: 2026-03-17HOYA LENS THAILAND LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-31
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing photochromic layers in optical products have insufficient color concentration and poor weather resistance during color development, and the solubility of photochromic compounds is also poor.

Method used

A photochromic layer is formed by using a polymeric composition containing noncyclic methacrylates with a molecular weight of 500 or more and difunctional (meth)acrylates selected from cyclic or branched structures, which improves the color concentration and weather resistance, and enhances the solubility of the photochromic compound.

Benefits of technology

A photochromic layer with high color rendering concentration and excellent weather resistance under light was achieved, and the solubility of photochromic compounds was improved, making it suitable for optical items such as eyeglass lenses.

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Abstract

The present application provides a polymerizable composition for optical articles, comprising: a photochromic compound, a non-cyclic methacrylate having a molecular weight of 500 or more (component A), and a 2-functional (meth)acrylate comprising a structure selected from a cyclic structure and a branched structure (component B).
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Citation Information

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